{"id":173,"date":"2026-06-11T08:58:01","date_gmt":"2026-06-11T08:58:01","guid":{"rendered":"https:\/\/planetary-gearboxes.cn\/?p=173"},"modified":"2026-06-11T08:58:01","modified_gmt":"2026-06-11T08:58:01","slug":"planetary-gearbox-for-textile-film-converting","status":"publish","type":"post","link":"https:\/\/planetary-gearboxes.cn\/ko\/planetary-gearbox-for-textile-film-converting\/","title":{"rendered":"Planetary Gearbox for Textile & Film Converting \u2014 Winding Machines, Slitters & High-Volume Textile Drives"},"content":{"rendered":"
\n
\n
\n
180:1<\/span><\/div>\n
Single Unit \u2014 EP-FALR<\/div>\n<\/div>\n
\n
\u00b11.2%<\/span><\/div>\n
Tension Uniformity \u2014 EP-FALR<\/div>\n<\/div>\n
\n
30,000\uc2dc\uac04<\/span><\/div>\n
Design Life \u2014 EP-FALR S5<\/div>\n<\/div>\n
\n
\u226597%<\/span><\/div>\n
Efficiency \u2014 EP-FPG Economy<\/div>\n<\/div>\n
\n
IP65<\/div>\n
Steam & Chemical \u2014 FPGA<\/div>\n<\/div>\n
\n
C1\u2013C10<\/div>\n
Universal Motor Adapter<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n

Engineering Context<\/span><\/p>\n

Roll Quality Starts at the Gearbox \u2014 Why Winding Tension Uniformity Is a Drive-Train Problem<\/h2>\n

<\/p>\n

\n
\"EP-FALR<\/p>\n

Korea Ever-Power EP-FALR \u2014 180:1 ratio, right-angle motor layout, integrated belt pulley output. A single sealed unit replaces the tandem gearbox arrangement on film and electrode winding mandrel drives.<\/p>\n<\/div>\n

In film and textile converting, roll quality is defined by winding tension uniformity. A roll wound with \u00b11% tension variation from core to surface and from one revolution to the next produces a tight, dimensionally consistent product. A roll wound with \u00b18% tension variation \u2014 with periodic peaks at mechanical rotation frequency \u2014 produces a product with streaks, layer shifts, and telescoping that downstream processes cannot compensate. The difference between these two outcomes is not the tension controller algorithm. It is the mechanical precision of the winding drive train.<\/p>\n

Winding machines for film, foil, and electrode substrate typically require 80\u2013180:1 gear ratio at the mandrel with the motor perpendicular to the winding axis \u2014 the motor drives a right-angle input, the planetary stages deliver the ratio, and a belt connects the gearbox output to the mandrel. The conventional solution to this geometry is a tandem arrangement: a right-angle gearbox stage (10:1) coupled by belt to an inline planetary stage (10:1), giving 100:1 total. Each inter-stage coupling \u2014 the belt between the two gearboxes, the hub-to-shaft interface at each pulley \u2014 introduces torsional compliance and backlash. These two mechanical properties manifest identically at the mandrel: periodic torque fluctuation at belt rotation frequency that the tension controller interprets as a real tension error and corrects with a torque command \u2014 which then interacts with the next periodic fluctuation. The result is the \u00b18% tension oscillation that characterises tandem-coupled winding drives in service.<\/p>\n

EP-FALR integrates the right-angle bevel input stage, two-stage helical planetary ratio, and timing belt pulley output in one sealed unit. At 180:1 maximum ratio, it covers the entire range of film and electrode winding requirements without a tandem arrangement. The absence of an inter-stage coupling eliminates the torsional compliance and backlash accumulation at that interface. Documented result in a Korean electrode coating machine: winding tension oscillation amplitude reduced from \u00b18% to \u00b11.2% of set tension after replacing the tandem arrangement with EP-FALR. The tension controller parameters were not changed.<\/p>\n

<\/p>\n

\n
\ud83e\uddf5<\/div>\n
\n
The Full Factory View: FALR for Winders, FPG\/FPGA for Everything Else<\/div>\n
A textile or film converting factory contains winding machines at both ends of the line (unwind and rewind) plus a large number of process drives in between \u2014 calender rolls, stenter transport, loom warp beams, knitting machine feeds \u2014 where \u22648 arc-min economy-grade precision is adequate. EP-FALR handles the winding precision problem. EP-FPG\/FPGA economy series handles the process drive volume.<\/strong> Both use the C1\u2013C10 universal motor adapter, so a single servo motor qualification covers the entire factory BOM. This is the same economic logic as packaging machinery \u2014 but at textile scale, where a single weaving shed may have 200\u2013400 servo-driven axes across all machines.<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

<\/div>\n

Roll & Fabric Defect Origin Map \u2014 From Symptom to Gearbox Root Cause<\/h3>\n

When a winding, slitting, or converting machine produces defective product, the symptoms appear in the roll or fabric but the root cause is often in the drive train. The following map connects observable defect types to their mechanical origin and to the correct EP-series solution. This is a first-pass diagnostic guide \u2014 use it to identify whether a gearbox change can resolve the defect before exploring process parameter adjustments.<\/p>\n

<\/p>\n

\n\n\n\n<\/p>\n\n\n\n\n\n\n\n\n
Defect \/ Symptom<\/th>\nMechanical Origin
\n(drive-train cause)<\/span><\/th>\n		Gearbox Mechanism<\/th>\nDetectable
\nby Controller?<\/th>\n		EP-Series
\nSolution<\/th>\n		Expected Result<\/th>\n<\/tr>\n<\/thead>\n
Periodic tension bands
\nVisible streaks at fixed spacing in web or film<\/span><\/td>\n		Inter-stage torsional compliance in tandem gearbox arrangement<\/td>\nBelt compliance between two-stage tandem gearboxes causes periodic torque variation at belt rotation frequency; appears as tension ripple at mandrel<\/td>\nPartially \u2014 controller over-corrects and amplifies<\/td>\n\u2605<\/span> EP-FALR P1<\/td>\nSingle-unit 180:1 eliminates inter-stage coupling; tension oscillation: \u00b18% \u2192 \u00b11.2%<\/td>\n<\/tr>\n

<\/p>\n

Periodic registration error
\nPrint colour offset at fixed interval in roll-to-roll printing<\/span><\/td>\n		Hub eccentricity at print roller drive shaft<\/td>\nSeparate pulley hub on roller drive gearbox output; hub bore\/shaft TIR of 0.05\u20130.12 mm produces periodic registration error at roller rotation frequency<\/td>\nNo \u2014 periodic, fixed frequency<\/td>\n\u2605<\/span> EP-FAL P1<\/td>\nIntegrated pulley eliminates hub eccentricity; periodic registration error: 0.08 mm \u2192 \u22640.015 mm<\/td>\n<\/tr>\n

<\/p>\n

Layer shift \/ telescoping
\nWound layers displaced axially \u2014 roll unusable<\/span><\/td>\n		Backlash at mandrel drive during tension reversal or speed change transient<\/td>\nBacklash accumulation in tandem gearbox (each stage contributes separately) creates dead zone during speed ramp; mandrel momentarily free to advance under inertia<\/td>\nPartially \u2014 at transients only<\/td>\nEP-FALR P1
\nor upgrade to P0<\/span><\/td>\n		Single-unit gearbox eliminates tandem backlash stack; \u22642 arc-min P1 significantly reduces transient dead zone<\/td>\n<\/tr>\n

<\/p>\n

Winding hardness variation
\nRoll hard in some zones, loose in others on same diameter<\/span><\/td>\n		Backlash growth in ageing gearbox \u2014 torque dead zone increases with wear<\/td>\nAs gear tooth surfaces wear, backlash increases progressively; tension controller compensation cannot keep up with slowly growing dead zone; winding hardness becomes non-uniform<\/td>\nNo \u2014 gradual drift, not detected<\/td>\nEP-FALR P1
\nDIN Cl-5 grade-stamped<\/span><\/td>\n		DIN Class 5 gears start with lower backlash; larger wear budget before P1 \u2192 P2 degradation; per-unit stamp documents starting value for condition monitoring<\/td>\n<\/tr>\n

<\/p>\n

Slitting width variation
\nSlit web width inconsistent across rewind shafts<\/span><\/td>\n		Differential speed error between rewind shafts due to backlash mismatch between individual gearboxes<\/td>\nIn multi-shaft slitting machines, gearboxes without per-unit backlash measurement may have different actual backlash values within the “P1” batch \u2014 differential torque delivery between shafts causes speed divergence and web width variation<\/td>\nPartially \u2014 by tension feedback<\/td>\nEP-FALR P1
\nindividual stamp<\/span><\/td>\n		Per-unit backlash stamp confirms matched values across all rewind shaft gearboxes; batch-to-batch consistency maintained<\/td>\n<\/tr>\n

<\/p>\n

Yarn tension irregularity
\nKnitting \/ weaving: uneven stitch\/pattern density<\/span><\/td>\n		Backlash in feed drive gearbox causing cyclic yarn speed error<\/td>\nIn closed-loop tension control, large backlash (\u226510 arc-min, typical worm) causes hunting in the tension controller \u2014 high-frequency torque commands that exceed the motor’s ability to respond, manifesting as yarn feed rate variation<\/td>\nPartially \u2014 controller hunts<\/td>\nEP-FPG P2
\n\u22645 arc-min<\/span><\/td>\n		FPG P2 (\u22645 arc-min) vs worm (\u226510 arc-min) reduces controller hunting amplitude; stable closed-loop tension control restored<\/td>\n<\/tr>\n

<\/p>\n

Gearbox overheating
\nWorm gearbox too hot to touch at rated production speed<\/span><\/td>\n		Worm gear sliding-contact efficiency loss (\u226465%) converted to heat in lubrication chamber<\/td>\nIn a 300 W motor with worm gearbox at 65% efficiency: 105 W dissipated as heat. In a continuous-duty textile drive running 16 hr\/day, this heat load raises lubricant temperature beyond the rated range of standard mineral-oil worm gearbox grease<\/td>\nYes \u2014 thermal trip<\/td>\nEP-FPG\/FPGA
\n\u226597% efficiency<\/span><\/td>\n		\u226597% efficiency: same 300 W motor dissipates only 9 W \u2014 92% heat reduction; no thermal trip at rated production speed<\/td>\n<\/tr>\n

<\/p>\n

IP seal failure \/ lubricant contamination
\nDye or steam entering gearbox on stenter\/dyeing machine<\/span><\/td>\n		Inadequate IP protection \u2014 batch-sample-tested seals allow ingress in field<\/td>\nSteam at 120\u00b0C thermal cycling causes gearbox seal expansion\/contraction; seals tested to IP65 on batch samples may fail on individual production units; dye ingress accelerates gear corrosion and backlash growth<\/td>\nYes \u2014 at late stage (black grease visible)<\/td>\nEP-FPGA IP65
\nevery unit tested<\/span><\/td>\n		IP65 pneumatic decay test on every unit (not batch sample) eliminates the marginal-seal population before shipment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Tension oscillation values (\u00b18% vs \u00b11.2%) documented in Korean electrode coating machine application. Registration error values (0.08 mm \u2192 0.015 mm) documented in Korean CNC router application with same integrated pulley mechanism. Other values are representative engineering estimates based on typical drive-train parameters.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

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Application Scenarios<\/span><\/p>\n

Six Textile & Film Converting Applications \u2014 Engineering Rationale and Series Selection<\/h2>\n

Textile and film converting encompasses winding precision at one end (EP-FALR for tandem elimination) and high-volume process drives at the other (EP-FPG\/FPGA for economy). The six scenarios below span this range, with engineering rationale for each series selection and the specific mechanical problem each resolves.<\/p>\n

\n

<\/p>\n

\n
\n
01 \u2014 Film \/ Foil \/ Electrode Winding Machine<\/div>\n
Mandrel drive \u2014 primary wind and rewind<\/div>\n<\/div>\n
\n
EP-FALR P1<\/span>
\nFrame 110\u2013190 mm<\/span>
\n80\u2013180:1 single unit<\/span><\/div>\n

Film and foil winders wind materials ranging from 5 \u00b5m polyester film to 100 \u00b5m aluminium foil at speeds of 200\u2013600 m\/min, with the tension set point varying from a few Newtons for thin films to hundreds of Newtons for heavy foils. The winding ratio requirement \u2014 80\u2013180:1 with the motor perpendicular to the mandrel axis \u2014 is what makes EP-FALR the only standard-production solution: no other Korean-manufactured planetary gearbox provides this ratio in a single unit with an integrated belt pulley output. The right-angle motor layout is essential because the mandrel runs horizontally and motor space is at the side or top of the machine frame, not in front of the mandrel end.<\/p>\n

Key spec:<\/strong> Single-unit 180:1 \u2014 no tandem coupling; integrated belt pulley \u2014 no hub eccentricity; \u22642 arc-min P1; F_rad 34,200 N for wide winding belt; 30,000 hr S5 life; NYOGEL 792D or CASTROL LMX (confirmed by application).<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
02 \u2014 Slitting Machine Rewind Shaft Drive<\/div>\n
Multi-shaft slit web rewinding \u2014 tension-controlled<\/div>\n<\/div>\n
\n
EP-FALR P1<\/span>
\nFrame 090\u2013150 mm<\/span>
\n50\u2013100:1<\/span><\/div>\n

Slitting machines cut a wide parent roll into multiple narrower slit rolls on individual rewind shafts driven by separate servo drives. A slitting machine typically has 4\u201324 rewind shafts, each requiring a gearbox. The key requirement is matched backlash across all shaft gearboxes \u2014 if individual shafts have different actual backlash values within a nominal “P1” batch, differential torque delivery causes slit width variation as faster shafts draw the web slightly. Korea Ever-Power’s per-unit backlash measurement and nameplate stamp confirms that each gearbox in a slitting machine set has a documented, matching backlash grade.<\/p>\n

Key spec:<\/strong> Per-unit backlash stamp ensures matched values across multi-shaft sets; right-angle compact for tight shaft spacing; 50\u2013100:1 single unit; 30,000 hr S5; IP65 for solvent\/chemical slitting environments.<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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\n
03 \u2014 Roll-to-Roll Printing \/ Coating Roller Drive<\/div>\n
Print cylinder \/ anilox \/ impression roller \u2014 registration<\/div>\n<\/div>\n
\n
EP-FAD P1<\/span>
\nFrame 090\u2013110 mm<\/span>
\nLow vibration<\/span><\/div>\n

Roll-to-roll printing machines for flexible packaging, labels, and decorative films require print cylinder speed synchronisation across all colour stations within \u00b10.05% at speeds of 50\u2013400 m\/min. Vibration from the gearbox drive at any colour station manifests as print registration error in the finished product \u2014 a repeating offset pattern at gear mesh frequency. EP-FAD P1 with helical planet gears delivers significantly lower vibration than straight-cut gear designs at equivalent pitch-line velocity: approximately 60% lower vibration amplitude at 5,000 rpm input. Low noise (\u226458 dB at FAD090) also matters in printing environments where operators are present at the press throughout the shift.<\/p>\n

Key spec:<\/strong> Low vibration \u2014 helical gears ~60% lower than straight-cut; \u22643 arc-min P1; 5\u201316:1; 5,000 rpm; thermal stability NYOGEL 792D \u221210\u00b0C to +90\u00b0C; 30,000 hr; IP65 solvent wash.<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
04 \u2014 Knitting Machine Yarn Feed \/ Take-Up<\/div>\n
Positive feed drive \u2014 circular knitting, warp knitting<\/div>\n<\/div>\n
\n
EP-FPG \/ FPGA<\/span>
\nFrame 060\u2013090 mm<\/span>
\n18% cost vs FAB<\/span><\/div>\n

Knitting machine positive feed drives control the rate at which yarn is delivered to the needles \u2014 the key parameter determining stitch density and fabric hand feel. The gearbox requirement is \u22648 arc-min backlash for stable closed-loop tension control, low noise (production hall with multiple machines running), and economy pricing for high-volume OEM supply (a circular knitting machine may have 48\u2013120 individual feed drives, each powered by a small servo motor through a planetary gearbox). EP-FPG round-housing press-fits into the feed roller hub without an adapter bracket; EP-FPGA flat-mounts on the machine frame. Both at 18% lower cost than EP-FAB at the same frame size.<\/p>\n

Key spec:<\/strong> Economy tier; \u22648 arc-min (\u22645 arc-min P2 option); \u226456 dB noise (FPG040); CASTROL LMX lifetime sealed; IP64 standard; C1\u2013C10 same adapter as precision axes if machine is upgraded.<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
05 \u2014 Weaving Loom Warp Beam Drive<\/div>\n
Warp let-off \u2014 fabric tension control, long service<\/div>\n<\/div>\n
\n
EP-FPG P2<\/span>
\nFrame 060\u2013120 mm<\/span>
\nLong service interval<\/span><\/div>\n

Weaving loom warp beam let-off drives control the rate at which warp yarn is unwound from the beam to maintain constant warp tension throughout the weaving cycle. The gearbox requirement is moderate precision (\u22645 arc-min P2 sufficient for closed-loop tension control), long maintenance-free interval (looms run continuously; any maintenance access requires loom stopping and relayering), and economy pricing for multi-machine installations. EP-FPG P2 sealed with CASTROL LMX lifetime fill requires no relubrication within the 20,000-hour S5 design life \u2014 aligning with typical loom overhaul intervals rather than creating an additional maintenance task.<\/p>\n

Key spec:<\/strong> \u22645 arc-min P2; zero scheduled lubrication within 20,000 hr S5; economy OEM pricing; IP64; 10\u201350:1; 3,000 rpm; matches loom overhaul interval.<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
06 \u2014 Dyeing \/ Stenter Frame Transport Drive<\/div>\n
Fabric transport \u2014 steam, dye, high-temperature chain<\/div>\n<\/div>\n
\n
EP-FPGA<\/span>
\nFrame 060\u2013100 mm<\/span>
\nIP65 steam\/chemical<\/span><\/div>\n

Stenter frames and dyeing machines transport fabric through steam-heated chambers at temperatures of 80\u2013200\u00b0C, with dye chemicals, steam condensate, and process water present at the drive chain environment. The gearbox must survive sustained thermal cycling, chemical exposure, and occasional wash cycles \u2014 making IP65 the minimum acceptable protection. EP-FPGA square housing flat-mounts on the stenter frame structure; the CASTROL LMX grease is rated for the high-temperature environment. Efficiency matters here: stenter frames may run 6,000\u20138,000 hours per year \u2014 a 35% efficiency difference between planetary and worm at 300 W per drive translates to measurable electricity savings across a multi-drive stenter line.<\/p>\n

Key spec:<\/strong> IP65 steam\/chemical; square housing flat-mount; CASTROL LMX 0\u201390\u00b0C; \u226597% efficiency (vs \u226465% worm); economy tier; 10\u201330:1; 3,000 rpm; long service interval.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n

Technical Specifications<\/span><\/p>\n

EP-Series Textile & Film Converting Specification Matrix<\/h2>\n

The table below spans from the highest-precision winding application (EP-FALR P1 for film winders) to the economy process drives (EP-FPGA for stenter transport). All series share the C1\u2013C10 universal motor adapter \u2014 a single motor qualification covers the entire factory BOM regardless of which series is specified at each drive point.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Drive Point \/ Machine Type<\/th>\n\uc2dc\ub9ac\uc988<\/th>\nFrame (mm)<\/th>\nBacklash<\/th>\nRatio<\/th>\nMax rpm<\/th>\nIP<\/th>\n\uc218\uba85(\uc2dc\uac04)<\/th>\nKey Selection Reason<\/th>\n<\/tr>\n<\/thead>\n
Film \/ foil winder mandrel<\/td>\n\u2605<\/span> EP-FALR P1<\/td>\n110\u2013190<\/td>\n\u22642 arc-min<\/td>\n80\u2013180:1<\/td>\n3,000<\/td>\nIP65<\/span><\/td>\n30,000*<\/td>\nSingle-unit 180:1; no tandem; integrated belt pulley; tension \u00b18% \u2192 \u00b11.2%<\/td>\n<\/tr>\n
Electrode coating winder<\/td>\nEP-FALR P1<\/td>\n110\u2013150<\/td>\n\u22642 arc-min<\/td>\n80\u2013120:1<\/td>\n3,000<\/td>\nIP65<\/span><\/td>\n30,000*<\/td>\nRight-angle; motor \u22a5 roll; cleanroom-compatible; precision tension<\/td>\n<\/tr>\n
Slitting machine rewind shaft<\/td>\nEP-FALR P1<\/td>\n090\u2013150<\/td>\n\u22642 arc-min<\/td>\n50\u2013100:1<\/td>\n3,000<\/td>\nIP65<\/span><\/td>\n30,000*<\/td>\nPer-unit stamp ensures matched backlash across multi-shaft sets; compact R\/A<\/td>\n<\/tr>\n
Roll-to-roll print \/ coating roller<\/td>\nEP-FAD P1<\/td>\n090\u2013110<\/td>\n\u22643 arc-min<\/td>\n5\u201316:1<\/td>\n5,000<\/td>\nIP65<\/span><\/td>\n30,000<\/td>\nLow vibration (helical gears); thermal stability; registration accuracy; solvent IP65<\/td>\n<\/tr>\n
Knitting machine yarn feed<\/td>\nEP-FPG\/FPGA<\/td>\n060\u2013090<\/td>\n\u22648 arc-min<\/td>\n10\u201330:1<\/td>\n3,000<\/td>\nIP64<\/td>\n20,000*<\/td>\nEconomy; 18% lower cost than FAB; 48\u2013120 feeds per machine; \u226456 dB noise<\/td>\n<\/tr>\n
Weaving loom warp beam<\/td>\nEP-FPG P2<\/td>\n060\u2013120<\/td>\n\u22645 arc-min<\/td>\n10\u201350:1<\/td>\n3,000<\/td>\nIP64<\/td>\n20,000*<\/td>\nZero relubrication within life (matches loom overhaul interval); economy OEM pricing<\/td>\n<\/tr>\n
Non-woven calender roll drive<\/td>\nEP-FPGA<\/td>\n090\u2013120<\/td>\n\u22648 arc-min<\/td>\n10\u201340:1<\/td>\n3,000<\/td>\nIP64<\/td>\n20,000*<\/td>\nSquare housing; OEM volume pricing; reliable torque density; long service<\/td>\n<\/tr>\n
Dyeing \/ stenter transport<\/td>\nEP-FPGA<\/td>\n060\u2013100<\/td>\n\u22648 arc-min<\/td>\n10\u201330:1<\/td>\n3,000<\/td>\nIP65<\/span><\/td>\n20,000*<\/td>\nIP65 steam\/dye chemical; \u226597% efficiency vs \u226465% worm; economy tier<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u2605 FALR\/FPG: S5 intermittent life shown; S1 continuous = 15,000 hr (FALR) \/ 10,000 hr (FPG). FAD values are S1 continuous. C1\u2013C10 applies to all series.<\/p>\n

<\/p>\n

\n
\n
\n
FALR 180:1<\/div>\n
No Tandem \u2014 Single Unit<\/div>\n<\/div>\n
\n
\u00b11.2%<\/div>\n
Tension Uniformity<\/div>\n<\/div>\n
\n
\u226597%<\/div>\n
FPG\/FPGA Efficiency<\/div>\n<\/div>\n
\n
30,000\uc2dc\uac04<\/div>\n
FALR S5 Life<\/div>\n<\/div>\n
\n
IP65<\/div>\n
Every Unit Tested<\/div>\n<\/div>\n
\n
C1\u2013C10<\/div>\n
One Factory BOM<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n

\uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \uc778\uc0ac\uc774\ud2b8<\/span><\/p>\n

Inside EP-FALR \u2014 Why Eliminating the Tandem Coupling Changes Winding Quality<\/h2>\n

<\/p>\n

\n
\"EP-FALR<\/p>\n
\n
\n
180:1<\/div>\n
Single Unit Max<\/div>\n<\/div>\n
\n
\u00b11.2%<\/div>\n
Tension Uniformity<\/div>\n<\/div>\n
\n
34.2kN<\/div>\n
Belt Force<\/div>\n<\/div>\n<\/div>\n

EP-FALR three-stage architecture: bevel input \u2192 two-stage helical planetary \u2192 integrated belt pulley output. One sealed unit, zero inter-stage coupling, 180:1 maximum ratio.<\/p>\n<\/div>\n

The Three Stages and What Each Eliminates<\/h3>\n

The tandem gearbox arrangement \u2014 a right-angle first stage coupled by belt to an inline second stage \u2014 was the default solution for winding mandrel drives because no single gearbox provided all three required functions: 90\u00b0 direction change, high ratio, and belt-pulley output. EP-FALR integrates all three in one sealed housing. Each stage eliminates a specific class of tension error:<\/p>\n

    \n
  1. 01<\/span>\n
    Bevel Input Stage \u2014 Motor at 90\u00b0, Zero Added Backlash to Tandem<\/strong><\/p>\n

    The bevel input stage changes the motor shaft direction by 90\u00b0 with a precisely ground bevel gear pair. This is the function the right-angle first-stage gearbox in a tandem arrangement provides \u2014 but in a tandem, the output of this stage then needs a belt coupling to the inline second stage, which introduces the inter-stage compliance. In EP-FALR, the bevel stage output shaft is directly internal to the same housing as the planetary stages \u2014 no external coupling, no inter-stage belt, no interface backlash or torsional spring between the two ratio stages.<\/p>\n<\/div>\n<\/li>\n

  2. 02<\/span>\n
    Two-Stage Helical Planetary \u2014 High Ratio, Low Heat, 30,000 hr Life<\/strong><\/p>\n

    The two planetary stages deliver the bulk of the ratio \u2014 up to 180:1 total from the FALR unit \u2014 using helical planet gears in rolling contact throughout. This is the same gear geometry as the premium EP-FAD series: DIN Class 5 profile-ground, NYOGEL 792D or CASTROL LMX sealed, rated for 30,000 hours S5. Winding machines run at low input speed (typically 500\u20133,000 rpm) with moderate torque \u2014 well within the thermal operating window of sealed NYOGEL 792D without any relubrication requirement.<\/p>\n<\/div>\n<\/li>\n

  3. 03<\/span>\n
    Integrated Belt Pulley \u2014 Zero Hub Eccentricity at Mandrel Drive<\/strong><\/p>\n

    The timing belt pulley is machined integral to the planetary output shaft \u2014 the same single-piece forging. There is no hub-to-shaft interface between the gear output and the belt pitch circle. This eliminates the hub eccentricity (0.05\u20130.12 mm TIR) that, in conventional winding drive designs, creates a periodic winding tension variation at belt rotation frequency. At a typical winding speed of 200 m\/min with a 100 mm belt pulley diameter, this eccentricity repeats at approximately 10 Hz \u2014 a frequency the winding tension controller sees as a real tension error and corrects, creating the characteristic \u00b18% tension oscillation. Removing the hub-shaft interface removes this excitation source entirely.<\/p>\n<\/div>\n<\/li>\n<\/ol>\n

    The measurable result: tension oscillation amplitude from \u00b18% (tandem + separate hub) to \u00b11.2% (EP-FALR, documented in Korean electrode coating machine application). The tension controller parameters were not changed \u2014 the improvement came entirely from removing the mechanical excitation sources.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

    <\/p>\n

    \n
    \n

    Selection Guide<\/span><\/p>\n

    Textile & Film Converting Gearbox Selection \u2014 5 Questions from Defect Symptom to Correct Series<\/h2>\n

    The selection logic for textile and film converting splits at Q1 between winding\/converting precision drives (FALR path) and process drives (FPG\/FPGA economy path). The defect map earlier in this article can serve as a first-pass diagnostic \u2014 if you’ve identified a roll quality defect, work backwards from the symptom to confirm whether the drive-train is the root cause before proceeding with Q1.<\/p>\n

    \n
    \n
    Selection Question<\/div>\n
    Your Answer \u2192 Series Implication<\/div>\n
    Recommended<\/div>\n<\/div>\n
    \n
    Q1 \u2014 Drive type?<\/div>\n
    Winding \/ rewind \/ slitting mandrel drive (high ratio, right-angle motor, belt output) \u2192 FALR path: Q2W<\/strong> \u00a0|\u00a0 Print \/ coating roller, precision tension roller \u2192 EP-FAD P1 \u00a0|\u00a0 All other process drives (knitting, loom, calender, stenter) \u2192 Economy path: Q2E<\/strong><\/div>\n
    Split path<\/div>\n<\/div>\n
    \n
    Q2W \u2014 Winding ratio required?<\/div>\n
    80\u2013180:1 right-angle with belt output \u2192 EP-FALR P1<\/strong> (single unit; no tandem; integrated pulley) \u00a0|\u00a0 50\u201380:1 \u2192 EP-FALR P1 lower ratio range \u00a0|\u00a0 Need more than 180:1 \u2192 two EP-FALR units in series or contact application engineering<\/div>\n
    EP-FALR P1<\/div>\n<\/div>\n
    \n
    Q3W \u2014 Multi-shaft matching?<\/div>\n
    Slitting machines only:<\/em> Number of rewind shafts \u00d7 individual FALR units. Per-unit backlash stamp confirms matched values across the shaft set. Contact Korea Ever-Power with shaft count and target backlash grade \u2014 matched-set supply available. For single-shaft winders, standard stock FALR is sufficient.<\/div>\n
    Matched set<\/div>\n<\/div>\n
    \n
    Q2E \u2014 Housing geometry?<\/div>\n
    Economy path:<\/em> Press-fit into roller hub bore \u2192 EP-FPG<\/strong> (round housing) \u00a0|\u00a0 Flat-mount on machine frame face \u2192 EP-FPGA<\/strong> (square housing) \u00a0|\u00a0 IP65 required (steam, dye, chemical environment) \u2192 specify IP65 option on FPGA \u00a0|\u00a0 Standard indoor textile hall \u2192 IP64 standard sufficient<\/div>\n
    FPG \/ FPGA<\/div>\n<\/div>\n
    \n
    Q4 \u2014 Volume \/ motor system?<\/div>\n
    High unit count (knitting: 48\u2013120 feeds; stenter: 20\u201360 transport drives): contact Korea Ever-Power for OEM volume pricing with BOM. C1\u2013C10 universal motor adapter: one qualification covers FALR + FPG + FPGA on the same factory BOM \u2014 Siemens, Yaskawa, Mitsubishi, Panasonic all covered by the same adapter ring for a given motor model.<\/div>\n
    OEM \/ C1\u2013C10<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    <\/p>\n

    \n
    \n

    Manufacturing Quality<\/span><\/p>\n

    Korea Ever-Power Production \u2014 Three Quality Standards That Matter for Winding and Textile Applications<\/h2>\n

    <\/p>\n

    \n
    \"Korea
    \n\"Korea<\/p>\n

    Test centre (backlash measurement, IP65 pressure decay \u2014 every unit) and gear-grinding workshop, Korea Ever-Power facility, Ansan-si, Gyeonggi-do, Korea.<\/p>\n<\/div>\n

    For winding and textile applications specifically, three production quality standards determine real-world performance over a multi-year production run. These are not marketing claims \u2014 they are engineering decisions made at the component design and production process level that have measurable consequences in the field.<\/p>\n

    Per-unit backlash stamp \u2014 critical for slitting machines and multi-shaft winders:<\/strong> In a slitting machine with 12 rewind shafts, all 12 gearboxes must have matching backlash to maintain uniform tension across the web width. If backlash values vary within the nominal P1 grade \u2014 which is possible without individual measurement, since P1 allows anything from 1.0 to 3.0 arc-min \u2014 the faster shaft draws the web slightly, causing slit width variation. Korea Ever-Power’s per-unit backlash stamp documents the exact measured value for each gearbox. For matched-set orders (multi-shaft slitting machines), Korea Ever-Power can supply units sorted by measured backlash within a narrow sub-range (e.g., all units within 0.3 arc-min of each other) on request.<\/p>\n

    IP65 per-unit pressure test \u2014 critical for stenter, dyeing, and chemical environments:<\/strong> Stenter frames and dyeing machines operate with steam condensate, dye chemicals, and periodic wash cycles. A gearbox with a marginal IP seal \u2014 one that passed a batch-sample test but not an individual unit test \u2014 allows chemical ingress within the first thermal cycling of the seal. Steam at 120\u00b0C causes the seal lip to expand; cooling pulls it back; any micro-gap in the seal lip geometry allows ingress on each cycle. The pneumatic pressure decay test on every EP-FPGA unit identifies seals with micro-gaps before they ship. In a stenter frame with 40 transport drives, this test eliminates the risk of multiple field IP failures occurring in the first production month.<\/p>\n

    CASTROL LMX lifetime seal \u2014 critical for long maintenance interval in textile machinery:<\/strong> Weaving looms and knitting machines are difficult to access for maintenance \u2014 stopping a loom to service a gearbox requires re-threading the entire warp, which takes hours. CASTROL LMX sealed lifetime fill in EP-FPG\/FPGA requires no relubrication within the 20,000-hour S5 design life. At typical textile machine duty cycles (1\u20132 shifts per day), 20,000 hours S5 corresponds to 8\u201312 years of operation \u2014 spanning the natural overhaul cycle of the machine itself.<\/p>\n

    <\/p>\n

    \n
    \ud83d\udcca<\/div>\n
    \n
    Matched-Set Supply for Slitting Machines \u2014 Available on Request<\/div>\n
    For slitting machine orders requiring uniform backlash across all rewind shaft gearboxes, Korea Ever-Power can supply EP-FALR units from the same production batch, sorted by measured backlash to within a specified sub-range. This service \u2014 available from 4 units minimum \u2014 ensures that all shafts in a slitting machine start with matching drive-train precision, eliminating the source of differential tension between shafts that causes slit width variation. Contact sales@planetary-gearboxes.cn with shaft count, target ratio, and required backlash sub-range to request a matched-set quotation.<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    <\/p>\n

    <\/div>\n

    EP-FALR vs. Tandem Gearbox Arrangement \u2014 Technical Comparison for Winding Applications<\/h3>\n
    \n\n\n\n\n\n\n\n\n\n\n
    Attribute<\/th>\nTandem Gearbox
    \n(R\/A stage + inline stage + belt hub)<\/th>\n    		EP-FALR
    \n(single sealed unit)<\/th>\n    		Impact on Winding Quality<\/th>\n<\/tr>\n<\/thead>\n
    Number of components<\/td>\n3\u20134 (2 gearboxes + belt + hub)<\/td>\n1 (single sealed unit)<\/td>\nFewer components = fewer failure modes; shorter assembly time; simpler BOM<\/td>\n<\/tr>\n
    Inter-stage coupling<\/td>\nBelt + hub: torsional compliance + eccentricity<\/td>\nNone \u2014 internal shaft only<\/td>\nEliminates periodic tension excitation at belt rotation frequency<\/td>\n<\/tr>\n
    Tension oscillation amplitude<\/td>\n\u00b18% typical (documented)<\/td>\n\u00b11.2% (documented)<\/td>\n6.7\u00d7 improvement \u2014 eliminates periodic band defects in wound roll<\/td>\n<\/tr>\n
    Max ratio (single arrangement)<\/td>\nLimited by inter-stage belt \u2014 typically 80\u2013100:1<\/td>\n180:1 standard catalogue<\/td>\nCovers all practical winding ratios without adding a third stage<\/td>\n<\/tr>\n
    Maintenance intervals<\/td>\nMultiple: belt tension, hub fasteners, two lube points<\/td>\nNone within 30,000 hr S5<\/td>\nSealed lifetime fill; no belt re-tensioning; no hub fastener torque checks<\/td>\n<\/tr>\n
    Per-unit backlash stamp<\/td>\nNot standard \u2014 two separate gearboxes, each batch-sampled<\/td>\n\u2713<\/span> Single unit, single stamp<\/td>\nEnables matched-set supply for slitting machines; single traceability document per shaft<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Tension oscillation values documented in Korean electrode coating machine application; same mechanism applies to film and foil winding. Component count comparison is for a standard tandem arrangement (right-angle gearbox + inter-stage belt + inline gearbox + belt hub to mandrel).<\/p>\n<\/div>\n<\/div>\n

    <\/p>\n

    \n
    \n

    \uace0\uac1d \ud53c\ub4dc\ubc31<\/span><\/p>\n

    What Textile and Film Converting Machine Engineers Say<\/h2>\n
    \n
    \n
    \u2605\u2605\u2605\u2605\u2605<\/div>\n

    “We build film winding machines for the flexible packaging market and had a persistent tension band problem \u2014 a repeating streak pattern at a fixed spacing in the wound rolls that our tension controller couldn’t tune out. After diagnostic measurement we traced it to the inter-stage belt in our tandem gearbox arrangement. Switched to EP-FALR 120:1. The tension oscillation amplitude dropped from about \u00b17% to under \u00b11.5%. The band pattern disappeared completely. We’ve rebuilt our standard winder drive around EP-FALR and haven’t had a roll quality reject on that machine since.”<\/p>\n

    \n
    CW<\/div>\n
    \n
    Choi W., R&D Mechanical Engineer<\/div>\n
    Film Winding Machine Manufacturer \u2014 Gyeonggi-do, Korea<\/div>\n<\/div>\n<\/div>\n<\/div>\n
    \n
    \u2605\u2605\u2605\u2605\u2605<\/div>\n

    “Our slitting machine has 16 rewind shafts. We’d been getting slit width variation of \u00b10.5 mm across the web \u2014 within specification, but at the limit. After investigating, we suspected unequal backlash between rewind shaft gearboxes. Korea Ever-Power supplied 16 FALR units from a matched set \u2014 all measured within 0.25 arc-min of each other. Slit width variation dropped to \u00b10.2 mm. The per-unit backlash stamps on the nameplates also went straight into our quality documentation system. Small details that make a real difference in a precision slitting operation.”<\/p>\n

    \n
    LY<\/div>\n
    \n
    Lee Y., Production Engineering Manager<\/div>\n
    Precision Slitting Machine OEM \u2014 Daejeon, Korea<\/div>\n<\/div>\n<\/div>\n<\/div>\n
    \n
    \u2605\u2605\u2605\u2605\u2605<\/div>\n

    “We replaced worm gear drives on 60 stenter transport zones with EP-FPGA. IP65 was non-negotiable \u2014 the stenter environment has steam and dye chemicals and we’d had worm gearbox seal failures every 6\u20139 months on the previous design. Since switching to FPGA with the per-unit IP65 test, we’ve had zero seal failures in 18 months of 2-shift operation. The efficiency improvement was also significant \u2014 the motor drives are noticeably cooler at rated speed, and electricity consumption on that line dropped measurably. The C1\u2013C10 adapter was the same as our knitting machine yarn feed drives, so one motor qualification covered both lines.”<\/p>\n

    \n
    PK<\/div>\n
    \n
    Park K., Engineering Director<\/div>\n
    Textile Finishing Equipment Manufacturer \u2014 Daegu, Korea<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    <\/p>\n

    \n
    \n

    <\/p>\n

    Related EP-Series \u2014 Full Textile Factory Coverage<\/h3>\n
    \n
    \"Korea<\/div>\n

    The core textile series are EP-FALR<\/a> (winding mandrel drives, 80\u2013180:1, right-angle, integrated pulley) for film, foil, electrode, and slit-rewind applications, and EP-FPG\/FPGA<\/a> (economy tier, \u22648 arc-min, \u226597% efficiency) for knitting, weaving, calender, and stenter drives. For inline belt-drive applications (roll-to-roll coating, some winding configurations): EP-FAL<\/a>. For print roller and coating roller drives requiring low vibration: EP-FAD P1<\/a>.<\/p>\n

    Browse the full EP series product range<\/a>, or explore related mechanical transmission components at agriculturalgear-boxes.com<\/a>. For worm reducer comparison in high-volume textile process drives: worm-reducers.xyz<\/a>.<\/p>\n<\/div>\n

    <\/p>\n

    Frequently Asked Questions \u2014 Textile & Film Converting Gearbox Selection<\/h3>\n
    \nWhy does a tandem gearbox cause tension oscillation, and why can’t the controller compensate?\uff0b<\/span><\/summary>\n
    A tandem winding gearbox \u2014 a right-angle first stage coupled to an inline second stage by a belt \u2014 introduces two mechanical imperfections between the motor and the mandrel. The first is torsional compliance: the belt between the two stages stretches and recovers under varying torque, acting as a torsional spring. The second is hub-to-shaft eccentricity at the belt pulleys: the separate hub mounted on each gearbox output shaft has a concentricity error of 0.05\u20130.12 mm, which causes the belt to advance and retard at pulley rotation frequency. Both effects manifest at the mandrel as periodic torque variation \u2014 which the tension controller sees as a real tension error and tries to correct. However, because the variation is periodic and repeating at a fixed frequency, the controller correction itself adds a torque component at the same frequency \u2014 and the interaction of the two periodic signals produces the characteristic \u00b18% tension oscillation that creates band defects in the wound roll. EP-FALR eliminates both excitation sources: there is no inter-stage belt (the bevel and planetary stages share one housing) and no separate hub (the belt pulley is machined onto the output shaft). The tension controller then operates against a mechanically stable torque source, and oscillation amplitude drops to \u00b11.2%.<\/div>\n<\/details>\n
    \nCan EP-FALR be supplied in matched sets for slitting machines with multiple rewind shafts?\uff0b<\/span><\/summary>\n
    Yes. Korea Ever-Power can supply EP-FALR units as a matched set for slitting machine multi-shaft installations, sorted by measured backlash within a specified sub-range. The standard P1 grade covers a range from 1.0 to 3.0 arc-min. For a matched-set order, Korea Ever-Power selects and measures units from the same production batch and supplies only those units whose measured backlash falls within a narrower sub-range \u2014 for example, all units between 1.5 and 1.8 arc-min. This ensures that all rewind shafts start with matching drive-train precision, eliminating the source of differential torque delivery between shafts that causes slit width variation. Minimum matched-set order is 4 units. Specify: frame size, ratio, required backlash sub-range (e.g., \u00b10.3 arc-min), and number of shafts when contacting sales@planetary-gearboxes.cn.<\/div>\n<\/details>\n
    \nIs EP-FPG\/FPGA suitable for stenter frame drives in 120\u00b0C steam environments?\uff0b<\/span><\/summary>\n
    EP-FPG\/FPGA with CASTROL LMX grease is rated for continuous operating temperatures of 0\u00b0C to +90\u00b0C inside the gearbox housing. At 120\u00b0C ambient (stenter chamber temperature), the gearbox housing will reach a steady-state temperature below the ambient level, provided the gearbox is not directly immersed in steam \u2014 the thermal resistance of the aluminium\/steel housing keeps the internal lubricant temperature within the rated range at typical textile machine duty cycles. For stenter applications where the gearbox is exposed to direct steam impingement (not just elevated ambient temperature), specify the IP65 option and confirm that the housing temperature in steady-state operation remains below +90\u00b0C. If steady-state housing temperature exceeds +90\u00b0C due to direct steam exposure, contact Korea Ever-Power application engineering for a high-temperature lubrication option. Most stenter transport drive installations in Korea and Europe operate within the standard CASTROL LMX temperature rating \u2014 the IP65 seal prevents steam condensate from entering the housing, which is the primary failure mode.<\/div>\n<\/details>\n
    \nWhat is the maximum winding speed achievable with EP-FALR at different ratios?\uff0b<\/span><\/summary>\n
    EP-FALR maximum input speed is 4,000 rpm (all frame sizes, all ratios). Maximum output speed = input speed \u00f7 ratio. At i=180:1: max output = 22.2 rpm. At i=100:1: max output = 40 rpm. At i=50:1: max output = 80 rpm. The usable winding mandrel speed depends on the belt pulley diameter and belt ratio between the FALR output pulley and the mandrel pulley. For a typical 100 mm FALR output pulley diameter with a 1:1 belt to a 100 mm mandrel, the mandrel peripheral speed at i=100:1 and 3,000 rpm input = (3,000 \u00f7 100) \u00d7 \u03c0 \u00d7 0.1 = 9.4 m\/min. For higher winding speeds (100\u2013600 m\/min typical for film), a larger belt ratio between FALR output and mandrel is used \u2014 the gearbox provides the torque multiplication and the correct mandrel speed is set by the belt\/pulley geometry. Korea Ever-Power provides winding speed calculations for specific mandrel diameters, motor speeds, and target winding velocities \u2014 contact sales@planetary-gearboxes.cn with your parameters.<\/div>\n<\/details>\n
    \nHow does the C1\u2013C10 motor adapter system cover both EP-FALR and EP-FPG on the same factory BOM?\uff0b<\/span><\/summary>\n
    The C1\u2013C10 adapter ring geometry is identical across all eight EP-series for a given servo motor model. In practice, this means: a textile factory using Yaskawa SGMJV servo motors qualifies the Yaskawa SGMJV interface once \u2014 using the C-adapter ring appropriate for that motor’s pilot diameter and bolt circle. That same adapter ring, from the same Korea Ever-Power catalogue item, fits EP-FALR (winding machine mandrel drives), EP-FPG (knitting machine feed drives), EP-FPGA (stenter transport drives), EP-FAD (print roller drives), and any other EP-series specified in the factory. When the factory upgrades a knitting machine from EP-FPG to EP-FAD for a higher-specification model, the motor interface does not change \u2014 only the gearbox body is replaced. This makes EP-series gearboxes the correct choice for a factory or equipment supplier that wants to standardise motor procurement across product lines of differing precision requirements.<\/div>\n<\/details>\n

    <\/p>\n

    \n
    Specify EP-FALR and EP-FPG\/FPGA for Your Textile or Film Converting Line<\/div>\n
    Send your winding ratio, mandrel configuration, and process drive count \u2014 Korea Ever-Power will provide FALR and FPG\/FPGA recommendations within 24 hours. Matched-set supply for slitting machines available on request.<\/div>\n

    Request Textile Gearbox Specification \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n

    \ud3b8\uc9d1\uc790: Cxm<\/p>","protected":false},"excerpt":{"rendered":"

    180:1 Single Unit \u2014 EP-FALR \u00b11.2% Tension Uniformity \u2014 EP-FALR 30,000hr Design Life \u2014 EP-FALR S5 \u226597% Efficiency \u2014 EP-FPG Economy IP65 Steam & Chemical \u2014 FPGA C1\u2013C10 Universal Motor Adapter Engineering Context Roll Quality Starts at the Gearbox \u2014 Why Winding Tension Uniformity Is a Drive-Train Problem Korea Ever-Power EP-FALR \u2014 180:1 ratio, right-angle […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[19],"tags":[],"class_list":["post-173","post","type-post","status-publish","format-standard","hentry","category-application-and-technical-guid"],"_links":{"self":[{"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/posts\/173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/comments?post=173"}],"version-history":[{"count":2,"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/posts\/173\/revisions"}],"predecessor-version":[{"id":177,"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/posts\/173\/revisions\/177"}],"wp:attachment":[{"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/media?parent=173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/categories?post=173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/tags?post=173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}