{"id":159,"date":"2026-06-11T08:50:33","date_gmt":"2026-06-11T08:50:33","guid":{"rendered":"https:\/\/planetary-gearboxes.cn\/?p=159"},"modified":"2026-06-11T08:53:04","modified_gmt":"2026-06-11T08:53:04","slug":"planetary-gearbox-for-agv-warehouse-automation","status":"publish","type":"post","link":"https:\/\/planetary-gearboxes.cn\/ko\/planetary-gearbox-for-agv-warehouse-automation\/","title":{"rendered":"Planetary Gearbox for AGV & Warehouse Automation \u2014 Drive Wheel Integration, \u226597% Efficiency & Economy Pricing"},"content":{"rendered":"
\n
\n
\n
\u226597%<\/span><\/div>\n
Efficiency \u2014 EP-FPG Series<\/div>\n<\/div>\n
\n
38%<\/span><\/div>\n
Motor Current Saving vs. Worm<\/div>\n<\/div>\n
\n
\u226456dB<\/span><\/div>\n
Noise Level \u2014 EP-FPG040<\/div>\n<\/div>\n
\n
IP64<\/div>\n
Standard \u2014 IP65 Available<\/div>\n<\/div>\n
\n
20,000\uc2dc\uac04<\/span><\/div>\n
Design Life (S5 Intermittent)<\/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

Why AGV & Warehouse Automation Demands a Better Drive Gearbox Than Worm<\/h2>\n

<\/p>\n

\n
\n

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

Korea Ever-Power EP-FPG economy planetary gearbox \u2014 round housing press-fits directly into machined AGV wheel hub bore, eliminating adapter bracket and external bearing housing<\/p>\n<\/div>\n

Modern warehouses operate AGV and AMR fleets at scales that would have been impossible a decade ago: 500 to 2,000 drive units per 100,000 m\u00b2 distribution centre, running three shifts, seven days a week. At this scale, the choice of drive gearbox is no longer a component-level decision \u2014 it is a total-cost-of-ownership calculation. A gearbox that draws 38% more motor current than necessary, runs at 10 dB higher noise than necessary, and requires a mounting adapter bracket that adds two additional failure interfaces is not merely inconvenient \u2014 it is a quantifiable drain on operating economics that compounds across every drive point in the fleet.<\/p>\n

The root of this problem is the worm gearbox. Worm reducers remain the default choice for AGV drive units in lower-tier automation because they are cheap and familiar. But the physics of worm gearing imposes an efficiency ceiling of approximately 65%, and often lower \u2014 the sliding contact between the worm shaft and worm wheel converts a significant fraction of motor torque into heat rather than traction force. In a single AGV drive unit, this efficiency difference is small. In a 240-unit conveyor installation, Korea Ever-Power has documented a 38% reduction in measured motor current per drive point when EP-FPGA economy planetary gearboxes replaced worm reducers \u2014 a result that directly translates to reduced battery capacity requirements, longer battery run time between charges, and lower electricity cost at the infrastructure level.<\/p>\n

The noise argument compounds the economic one. Worm gearboxes in typical warehouse automation run at 60\u201370 dB under load. EP-FPG040 has been measured at \u226456 dB at rated load. This difference matters because modern warehouse regulations in Korea and the EU increasingly cap operational noise levels in human-collaborative zones \u2014 the same areas where AGVs and AMRs operate alongside workers. A gearbox that allows the noise limit to be met without acoustic enclosures eliminates a class of compliance cost entirely.<\/p>\n

<\/p>\n

\n
\u26a1<\/div>\n
\n
The 240-Unit Installation: Documented Efficiency Gain<\/div>\n
A Korean logistics integrator replaced worm gearboxes with EP-FPGA economy planetary gearboxes across a 240-unit conveyor installation. Measured result: 38% lower motor current per drive point<\/strong>. Gearbox unit cost saving: 18% vs. EP-FAB baseline<\/strong>. Total installation payback on energy savings: under 14 months at KRW 120\/kWh industrial tariff. The round-housing press-fit into the existing hub bores required zero machining changes \u2014 only adapter brackets were eliminated.<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

<\/div>\n

EP-FPG Planetary vs. Worm Gearbox \u2014 Head-to-Head Performance Comparison<\/h3>\n

The following comparison covers the six performance dimensions that determine AGV drive gearbox total cost of ownership. All data is based on verified specifications (EP-FPG040 datasheet) and the documented 240-unit conveyor installation result for the efficiency figure.<\/p>\n

\n

<\/p>\n

\n
Transmission Efficiency<\/span><\/div>\n
\n

EP-FPG (Planetary)<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

\u226597%<\/span><\/p>\n<\/div>\n

\n

Worm Gearbox (typical)<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

\u226465%<\/span><\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n
Operating Noise Level<\/span>
\nLower bar = quieter<\/span><\/div>\n
\n

EP-FPG040 (measured)<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

\u226456 dB<\/span><\/p>\n<\/div>\n

\n

Worm Gearbox (typical)<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

60\u201370 dB<\/span><\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n
Motor Current Draw<\/span>
\nLower bar = less current (better)<\/span><\/div>\n
\n

EP-FPG (documented)<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

Baseline<\/span><\/p>\n<\/div>\n

\n

Worm Gearbox (documented)<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

+38%<\/span><\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n
Backlash (Position Accuracy)<\/span>
\nHigher bar = tighter (better)<\/span><\/div>\n
\n

EP-FPG (\u22648 arc-min grade)<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

\u22648 arc-min<\/span><\/p>\n<\/div>\n

\n

Worm Gearbox (typical)<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

10\u201320 arc-min<\/span><\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n
Unit Cost (Relative)<\/span>
\nLower bar = cheaper (better)<\/span><\/div>\n
\n

EP-FPG\/FPGA Economy<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

~48% of FAB<\/span><\/p>\n<\/div>\n

\n

Low-grade Worm (Chinese)<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

Comparable<\/span><\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n
Hub Integration (Mounting Parts)<\/span>
\nLower bar = fewer parts (better)<\/span><\/div>\n
\n

EP-FPG (press-fit housing)<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

1 part<\/span><\/p>\n<\/div>\n

\n

Worm + adapter bracket<\/span><\/p>\n

\n
<\/div>\n<\/div>\n

3\u20134 parts<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n

Efficiency and noise data: EP-FPG040 verified datasheet values. Motor current saving: documented 240-unit Korean logistics installation. Cost data: relative to EP-FAB P1 baseline at equivalent torque class. Worm gearbox data: representative Chinese OEM market specification.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n

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

Six AGV & Warehouse Drive Applications \u2014 Series, Spec, and Why<\/h2>\n

AGV and warehouse automation spans a wide range of drive architectures \u2014 from indoor flat-floor traction wheels and differential steering to AS\/RS stacker crane travels and high-speed sortation divert drives. Each application has a distinct torque, speed, mounting geometry, and backlash requirement. The six scenarios below cover the main drive types encountered in Korean and international warehouse automation projects.<\/p>\n

\n

<\/p>\n

\n
\n
01 \u2014 Indoor AGV Traction Drive<\/div>\n
Flat-floor differential or single-axis drive wheel<\/div>\n<\/div>\n
\n
EP-FPG<\/span>
\nFrame 040\u2013120 mm<\/span>
\n\u22648 arc-min<\/span><\/div>\n

The EP-FPG round housing is machined to press-fit directly into the AGV wheel hub bore \u2014 eliminating the adapter bracket, separate bearing housing, and two additional assembly torque joints that are standard with worm gear motor packages. Ratio range 10\u201350:1 covers the full AGV speed range at 3,000\u20134,000 rpm input.<\/p>\n

Key spec:<\/strong> \u226597% efficiency; \u226456 dB noise; CASTROL LMX sealed lifetime grease; 20,000 hr S5 design life. C1\u2013C10 universal motor adapter fits all servo motor brands in a single qualification.<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
02 \u2014 AMR Omnidirectional Drive<\/div>\n
Autonomous mobile robot multi-wheel navigation unit<\/div>\n<\/div>\n
\n
EP-FPG<\/span>
\nFrame 040\u2013080 mm<\/span>
\n10\u201330:1 ratio<\/span><\/div>\n

AMR platforms with 4\u20136 independently driven wheels require gearboxes that fit within the compact wheel pod envelope. The FPG040 and FPG060 round housings press-fit into 40 mm and 60 mm hub bores, enabling wheel pod designs that are 18\u201322 mm shorter axially than equivalent worm-motor packages. Low noise is critical in human-collaborative AMR zones.<\/p>\n

Key spec:<\/strong> \u226456 dB (FPG040); compact round housing; 4,000 rpm max input; IP64 standard (IP65 option for spray cleaning environments).<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
03 \u2014 Conveyor Indexing Drive<\/div>\n
Accumulation zone, pallet roller, flat-belt conveyor<\/div>\n<\/div>\n
\n
EP-FPGA<\/span>
\nFrame 060\u2013120 mm<\/span>
\n10\u201350:1 ratio<\/span><\/div>\n

The EP-FPGA square-housing variant mounts flat against conveyor frame faces and end plates \u2014 zero adapter required, four bolt holes, standard bolt circle. In the documented 240-unit installation, FPGA replaced worm gear motors on all accumulation zone drives: unit cost saving 18% vs. EP-FAB; energy saving 38% per drive point; noise reduced 10\u201314 dB.<\/p>\n

Key spec:<\/strong> Square housing flat-mount; 423 Nm max output torque; IP64 standard; CASTROL LMX lifetime grease; 20,000 hr S5 life at 3,000 rpm input.<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
04 \u2014 Sortation Conveyor Divert Drive<\/div>\n
High-volume parcel routing deflector or pop-up wheel<\/div>\n<\/div>\n
\n
EP-FPG P2<\/span>
\nFrame 040\u2013080 mm<\/span>
\n10\u201330:1 ratio<\/span><\/div>\n

Sortation divert drives cycle at 60\u2013120 operations per minute in high-volume e-commerce fulfilment centres. The key requirement is fatigue life at high cycle count combined with economy pricing at volumes of 500\u20132,000 units per site. EP-FPG P2 grade (\u22645 arc-min) meets the positioning requirement for divert accuracy, and economy pricing enables cost-effective OEM volume sourcing.<\/p>\n

Key spec:<\/strong> High-cycle fatigue life; long maintenance interval; C1\u2013C10 motor adapter for multi-supplier motor compatibility; IP64; economy OEM volume pricing available.<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
05 \u2014 AS\/RS Stacker Crane Travel<\/div>\n
High-rack X\/Y travel drive \u2014 multi-shift duty<\/div>\n<\/div>\n
\n
EP-FAD P1<\/span>
\nFrame 110\u2013180 mm<\/span>
\n30,000 hr life<\/span><\/div>\n

AS\/RS stacker cranes run 3-shift continuous at high duty cycle \u2014 the X-axis travel motor drives a rack-and-pinion system through the gearbox, and the Y-axis (lift) similarly. The design life requirement is 30,000 hours (S1 continuous), which EP-FAD meets. Low noise is required for warehouse environments adjacent to picker areas. Ratio 10\u201340:1 covers the full travel speed range.<\/p>\n

Key spec:<\/strong> 30,000 hr S1; \u22643 arc-min P1; round-flange direct mount; 10,000 rpm max input (EP-FAD); NYOGEL 792D lifetime lubrication; IP65.<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
06 \u2014 Shuttle & Dense Storage Drive<\/div>\n
Narrow-aisle pallet shuttle \u2014 high-density racking<\/div>\n<\/div>\n
\n
EP-FPG<\/span>
\nFrame 060\u2013100 mm<\/span>
\n20\u201350:1 ratio<\/span><\/div>\n

Pallet shuttle systems operate within narrow aisle rails where axial gearbox length is critical \u2014 every millimetre of gearbox overhanging the wheel centreline reduces the usable aisle width or requires wider rail spacing. The FPG round housing presses directly into the wheel bore, keeping the drive assembly compact. Economy pricing enables cost-effective deployment at 100\u2013500 units per warehouse system.<\/p>\n

Key spec:<\/strong> Compact round housing; low noise \u226456 dB; economy tier; minimal maintenance interval; IP64 for dusty racking environment; C1\u2013C10 adapter.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n

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

EP-FPG \/ EP-FPGA Series Specification for AGV & Logistics Applications<\/h2>\n

The EP-FPG (round housing) and EP-FPGA (square housing) are economy-tier planetary gearboxes designed for high-volume OEM applications where P0\/P1 precision is not required but transmission efficiency, noise, mounting geometry, and maintenance interval are key selection factors. Both share the same gear train, lubrication, and motor adapter system as the precision EP-FAB\/FAD series.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nEP-FPG
\n(Round Housing)<\/th>\n		EP-FPGA
\n(Square Housing)<\/th>\n		AGV Application
\nRelevance<\/th>\n<\/tr>\n<\/thead>\n
\ud504\ub808\uc784 \ud06c\uae30<\/td>\n040, 060, 080, 100, 120, 160 mm<\/td>\n040, 060, 080, 100, 120, 160 mm<\/td>\nFPG040\/060 for small AMR wheels (75\u2013120 mm dia); FPG080\/100 for standard AGV wheels (150\u2013200 mm dia)<\/td>\n<\/tr>\n
Output Torque (Max)<\/td>\n14\u2013423 Nm (by frame size)<\/td>\n14\u2013423 Nm (by frame size)<\/td>\n200\u2013300 Nm covers most AGV drive wheels up to 500 kg payload per wheel<\/td>\n<\/tr>\n
Backlash Grade<\/td>\n\u22648 arc-min (std) \/ \u22645 arc-min (P2)<\/td>\n\u22648 arc-min (std) \/ \u22645 arc-min (P2)<\/td>\nSufficient for closed-loop position control with servo encoder correction; not required for P0 unless \u00b10.1\u00b0 stop accuracy specified<\/td>\n<\/tr>\n
Efficiency<\/td>\n\u226597%<\/span><\/td>\n\u226597%<\/span><\/td>\nvs. \u226465% worm; enables 38% motor current reduction per drive point<\/td>\n<\/tr>\n
Noise Level<\/td>\n\u226456 dB (FPG040)<\/span><\/td>\n\u226458 dB (FPGA040)<\/td>\nMeets EU warehouse noise limit for human-collaborative zones; eliminates need for acoustic enclosures<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n4,000 rpm<\/td>\n4,000 rpm<\/td>\nSupports servo motors up to 4,000 rpm; 3,000 rpm typical for AGV traction<\/td>\n<\/tr>\n
Ratio Range<\/td>\ni = 3, 4, 5, 7, 10, 14, 20, 25, 30, 35, 40, 50, 70, 100:1<\/td>\nSame as FPG<\/td>\ni=10\u201350:1 covers all AGV\/AMR traction and conveyor speed ranges in single-stage configuration<\/td>\n<\/tr>\n
Design Life<\/td>\n20,000 hr (S5 intermittent)<\/td>\n20,000 hr (S5 intermittent)<\/td>\nEquivalent to ~10 years at 6 hr\/day AGV duty; 20,000 hr S5 = 10,000 hr S1 continuous<\/td>\n<\/tr>\n
IP Rating<\/td>\nIP64 standard \/ IP65 option<\/td>\nIP64 standard \/ IP65 option<\/td>\nIP64 sufficient for standard warehouse; IP65 for washdown cleaning environments<\/td>\n<\/tr>\n
Lubrication<\/td>\nCASTROL LMX sealed lifetime fill<\/td>\nCASTROL LMX sealed lifetime fill<\/td>\nZero relubrication maintenance within design life; no scheduled lube service required<\/td>\n<\/tr>\n
Motor Adapter<\/td>\nC1\u2013C10 Universal<\/span><\/td>\nC1\u2013C10 Universal<\/span><\/td>\nOne adapter qualification fits Siemens, Yaskawa, Mitsubishi, Panasonic, Bosch \u2014 all brands across all 8 series<\/td>\n<\/tr>\n
Housing Interface<\/td>\nRound \u2014 press-fit into hub bore<\/strong><\/td>\nSquare \u2014 flat bolt-pattern mount<\/td>\nFPG round: zero adapter bracket for AGV wheel integration. FPGA square: flat-mount on conveyor frames and end-plates<\/td>\n<\/tr>\n
Operating Temperature<\/td>\n0\u00b0C to +90\u00b0C (CASTROL LMX)<\/td>\n0\u00b0C to +90\u00b0C<\/td>\nNote: minimum 0\u00b0C \u2014 for cold storage warehouses (\u221220\u00b0C), specify NYOGEL 792D grade with \u221210\u00b0C lower limit or confirm cold-rated option<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

\n
\n
\n
FPG040\u2013160<\/div>\n
6 Frame Sizes<\/div>\n<\/div>\n
\n
14\u2013423 Nm<\/div>\n
Output Torque Range<\/div>\n<\/div>\n
\n
\u226597%<\/div>\n
Efficiency (Helical Planetary)<\/div>\n<\/div>\n
\n
\u226456 dB<\/div>\n
Noise (FPG040 Rated Load)<\/div>\n<\/div>\n
\n
C1\u2013C10<\/div>\n
Universal Motor Adapter<\/div>\n<\/div>\n
\n
IP64 \/ IP65<\/div>\n
Standard \/ Option<\/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 the EP-FPG\/FPGA \u2014 What Separates Economy Planetary from Economy Worm<\/h2>\n

<\/p>\n

\n
\"EP-FPG
\n<\/p>\n
\n
\n
3\ubc30<\/div>\n
Planet Gear Load Share<\/div>\n<\/div>\n
\n
\u226597%<\/div>\n
Helical Efficiency<\/div>\n<\/div>\n
\n
DIN 6\u20137<\/div>\n
Gear Accuracy Class<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

The EP-FPG\/FPGA gear train uses ground helical planet gears (DIN Class 6\u20137) \u2014 the same helical cutting geometry as the premium FAB\/FAD series, at economy-tier pricing. This is the mechanical basis for the efficiency and noise advantage over worm gear reducers.<\/p>\n<\/div>\n

<\/p>\n

Four Design Decisions That Make EP-FPG Different from a Worm Reducer<\/h3>\n

The price of an EP-FPG at economy tier is comparable to a Chinese worm gear motor package. The engineering difference is that the EP-FPG uses helical planetary gearing rather than worm-and-wheel sliding contact. This single design decision produces the efficiency, noise, and backlash advantages documented above \u2014 and those advantages accumulate across every drive point in a large fleet deployment.<\/p>\n

    \n
  1. 01<\/span>\n
    \n

    Helical Planet Gears (3\u00d7) \u2014 DIN Class 6\u20137, Ground<\/strong><\/p>\n

    Three helical planet gears distribute the transmitted torque equally via rolling contact \u2014 not sliding contact as in worm gearing. Rolling contact at helical angles produces \u226597% transmission efficiency. The DIN 6\u20137 ground accuracy keeps noise at \u226456 dB even in the smallest FPG040 frame.<\/p>\n<\/div>\n<\/li>\n

  2. 02<\/span>\n
    \n

    Round Housing (FPG) \u2014 Press-Fit into Wheel Hub Bore<\/strong><\/p>\n

    The FPG housing outer diameter is machined to press-fit directly into a standard wheel hub bore \u2014 40 mm OD for FPG040, 60 mm for FPG060, and so on through FPG160. No adapter bracket, no separate bearing housing, no external bolted interface between gearbox and wheel. This eliminates three parts, three assembly torque points, and three additional wear surfaces from the drive assembly.<\/p>\n<\/div>\n<\/li>\n

  3. 03<\/span>\n
    \n

    CASTROL LMX Sealed Lifetime Lubrication<\/strong><\/p>\n

    CASTROL LMX synthetic grease is rated for 0\u00b0C to +90\u00b0C continuous service. The sealed housing means zero relubrication maintenance within the 20,000-hour design life. In a 500-unit AGV fleet, this eliminates a scheduled maintenance task that would otherwise require fleet downtime and technician time on a 6\u201312-month interval across every gearbox.<\/p>\n<\/div>\n<\/li>\n

  4. 04<\/span>\n
    \n

    C1\u2013C10 Universal Motor Adapter \u2014 One Qualification, All Series<\/strong><\/p>\n

    The C1\u2013C10 clamp-ring motor adapter system is identical across all 8 EP-series \u2014 EP-FAB, EP-FAD, EP-FPG, EP-FALR, and the rest. An AGV OEM that qualifies a Yaskawa servo motor with EP-FPGA can use the same adapter with EP-FAD if they later upgrade the precision specification without re-engineering the motor interface. One qualification covers the full product range.<\/p>\n<\/div>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n

    <\/p>\n

    \n
    \n

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

    AGV Gearbox Selection Decision Matrix \u2014 5 Questions to the Right Series<\/h2>\n

    For most AGV and warehouse automation applications, the selection decision is between EP-FPG (round housing), EP-FPGA (square housing), and EP-FAD P1 (for AS\/RS precision axes). Work through these five questions in sequence. For fleets above 50 units, volume pricing applies \u2014 contact Korea Ever-Power with your BOM for an OEM pricing schedule.<\/p>\n

    \n

    <\/p>\n

    \n
    Selection Question<\/div>\n
    Your Answer \u2192 Series Implication<\/div>\n
    Recommended<\/div>\n<\/div>\n

    <\/p>\n

    \n
    Q1 \u2014 Backlash requirement?<\/div>\n
    Closed-loop servo with position correction (\u22648 arc-min OK) \u2192 FPG\/FPGA \u00a0|\u00a0 \u00b10.1\u00b0 stop precision (\u22645 arc-min) \u2192 FPG P2 \u00a0|\u00a0 High-precision AS\/RS travel (\u22643 arc-min) \u2192 EP-FAD P1 \u00a0|\u00a0 CNC\/robot precision not relevant for AGV \u2192 eliminate P0<\/div>\n
    FPG \/ FAD<\/div>\n<\/div>\n

    <\/p>\n

    \n
    Q2 \u2014 Housing geometry?<\/div>\n
    Press-fit into wheel hub bore \u2192 EP-FPG (round) \u00a0|\u00a0 Flat-mount on frame face or conveyor end-plate \u2192 EP-FPGA (square) \u00a0|\u00a0 Flange-mount (robot or AS\/RS crane) \u2192 EP-FAD (round bolt-circle) \u00a0|\u00a0 Right-angle layout \u2192 EP-FABR<\/div>\n
    FPG \/ FPGA<\/div>\n<\/div>\n

    <\/p>\n

    \n
    Q3 \u2014 Output torque range?<\/div>\n
    Up to 423 Nm \u2192 FPG\/FPGA (sufficient for AGV wheels up to ~500 kg payload per wheel) \u00a0|\u00a0 Above 423 Nm \u2192 step up to EP-FAB P1 (2,000 Nm max) for heavy conveyor or high-payload AGV<\/div>\n
    FPG \u2192 FAB<\/div>\n<\/div>\n

    <\/p>\n

    \n
    Q4 \u2014 Environment?<\/div>\n
    Standard indoor warehouse \u2192 FPG\/FPGA IP64 standard \u00a0|\u00a0 Daily washdown or outdoor yard \u2192 specify IP65 option \u00a0|\u00a0 Cold storage below 0\u00b0C \u2192 confirm cold-rated NYOGEL or specify EP-FAD (NYOGEL 792D rated to \u221210\u00b0C) \u00a0|\u00a0 Food-grade cleanroom \u2192 EP-FAD P1 with NYOGEL 792D<\/div>\n
    IP64 \/ IP65<\/div>\n<\/div>\n

    <\/p>\n

    \n
    Q5 \u2014 Volume \/ pricing tier?<\/div>\n
    Prototype \/ small batch (1\u201310 units) \u2192 standard pricing, FPG040\u2013160 from stock \u00a0|\u00a0 OEM project (50+ units) \u2192 request volume pricing schedule with BOM \u00a0|\u00a0 Large fleet (200+ units) \u2192 contact sales@planetary-gearboxes.cn with motor model + wheel bore diameter for OEM pricing and C-adapter specification<\/div>\n
    OEM Pricing<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    <\/p>\n

    \n
    \n

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

    Korea Ever-Power Production \u2014 Why Economy Tier Still Means Every-Unit Testing<\/h2>\n

    <\/p>\n

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

    Above: gear manufacturing workshop and test centre at Korea Ever-Power facility, Ansan-si, Gyeonggi-do. Both the precision EP-FAB\/FAD and economy EP-FPG\/FPGA lines are produced and tested on the same floor.<\/p>\n<\/div>\n

    The distinction between economy tier and precision tier at Korea Ever-Power is in gear accuracy class and backlash grade \u2014 not in manufacturing process discipline. The EP-FPG\/FPGA series is produced on the same gear-grinding machines, in the same facility in Ansan-si, Gyeonggi-do, Korea, that produces the premium EP-FAB\/FAD series. The same CMM inspection, the same IP seal pressure testing, and the same test-center noise and vibration measurement apply to every unit.<\/p>\n

    For AGV and warehouse automation OEMs, this matters in two concrete ways. First, IP64 on every unit (not a batch sample) means that a leaked gearbox in a warehouse floor environment \u2014 where motor current monitoring and temperature telemetry typically flag failure well after actual ingress has begun \u2014 is not a production process variability event. Every unit was pressure-tested before shipment. Second, the backlash grade is measured and documented on each unit’s test record, making traceability available for any warranty or commissioning audit.<\/p>\n

    Chinese worm gear motors that compete on price in this segment typically do not perform individual unit IP testing \u2014 they batch-sample. They do not document individual backlash measurements \u2014 they specify a nominal grade with no per-unit data. For an AGV fleet deployed across multiple warehouse sites, and returned to service after any repair, the absence of per-unit documentation creates a class of maintenance complexity that Korea Ever-Power’s production standard eliminates at the point of manufacture.<\/p>\n

    <\/p>\n

    \n
    \ud83d\udd27<\/div>\n
    \n
    Economy Tier \u2260 Sample Testing \u2014 Every EP-FPG Unit Is IP-Tested<\/div>\n
    Korea Ever-Power applies IP64 pneumatic pressure decay testing to every EP-FPG\/FPGA unit before shipment. This is the same test applied to the premium EP-FAB\/FAD series (which is tested to IP65). The FPG economy tier trades gear accuracy class (DIN 6\u20137 vs. DIN 5) and backlash grade (\u22648 arc-min vs. \u22641 arc-min) \u2014 not production discipline. An AGV integrator specifying FPG on a 200-unit project receives 200 individually pressure-tested units, not a consignment batch-sampled from a statistical population.<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    <\/p>\n

    <\/div>\n

    EP-FPG\/FPGA vs. Chinese Worm Gearbox \u2014 Technical Attribute Comparison<\/h3>\n

    The following comparison is factual and based on verified specifications. It is intended to help AGV and warehouse OEM engineers communicate the total-cost-of-ownership case for planetary over worm to procurement teams working from a unit-price-only evaluation.<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n
    Attribute<\/th>\nChinese Worm Gearbox
    \n(OEM Market Typical)<\/th>\n    		Korea Ever-Power
    \nEP-FPG \/ EP-FPGA<\/th>\n    		Fleet Impact
    \n(200-unit scale)<\/th>\n<\/tr>\n<\/thead>\n
    Transmission type<\/td>\nWorm-and-wheel (sliding contact)<\/td>\n\u2713<\/span> Helical planetary (rolling contact)<\/td>\nRolling contact = \u226597% eff.; sliding contact = \u226465% eff.<\/td>\n<\/tr>\n
    Efficiency<\/td>\n\u226465%<\/td>\n\u226597%<\/span><\/td>\n38% motor current saving per drive \u00d7 200 units = significant operating cost reduction<\/td>\n<\/tr>\n
    Noise<\/td>\n60\u201370 dB<\/td>\n\u226456 dB (FPG040)<\/span><\/td>\n10\u201314 dB quieter; meets EU warehouse noise limit without acoustic enclosures<\/td>\n<\/tr>\n
    Backlash<\/td>\n10\u201320 arc-min (batch)<\/td>\n\u22648 arc-min (per unit)<\/td>\nTighter backlash reduces servo correction demand; per-unit measurement enables warranty traceability<\/td>\n<\/tr>\n
    IP testing<\/td>\nBatch sample (typical)<\/td>\n\u2713 Every unit tested<\/span><\/td>\nEliminates IP-failure variability across fleet; supports tier-1 supplier audit requirements<\/td>\n<\/tr>\n
    Hub integration<\/td>\nRequires adapter bracket<\/td>\n\u2605<\/span> Press-fit into hub bore (FPG)<\/td>\nEliminates adapter bracket: 3 fewer parts, 2 fewer assembly torque checks per drive unit<\/td>\n<\/tr>\n
    Motor adapter system<\/td>\nMotor-specific only<\/td>\n\u2713<\/span> C1\u2013C10 universal (all series)<\/td>\nSingle motor qualification covers FPG through FAB; no re-tooling if series upgraded later<\/td>\n<\/tr>\n
    Relative unit price<\/td>\n~90\u2013100% of FPG<\/td>\n\u2605<\/span> Comparable at volume<\/td>\nAt comparable unit price, the FPG provides 32% more efficiency, 10\u201314 dB less noise, and individual IP testing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Korea Ever-Power does not manufacture worm gearboxes and does not claim to manufacture products identical to named brands. Comparative data is based on publicly available specifications and documented customer installation results.<\/p>\n<\/div>\n<\/div>\n

    <\/p>\n

    \n
    \n

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

    What AGV and Logistics Automation Engineers Say<\/h2>\n
    \n

    <\/p>\n

    \n
    \u2605\u2605\u2605\u2605\u2605<\/div>\n

    “We replaced worm gear drives on 240 conveyor zones with EP-FPGA. The measured motor current dropped by 38% at each drive point \u2014 that translated directly to smaller inverter sizing on the project. The round-housing press-fit eliminated the adapter bracket entirely: faster assembly, fewer parts in BOM, and no torque-check maintenance on the bracket bolts. We also saw the noise floor drop by 12 dB across the conveyor area.”<\/p>\n

    \n
    KL<\/div>\n
    \n
    Kim J., Lead Engineer<\/div>\n
    Logistics Systems Integrator \u2014 Incheon, Korea<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    <\/p>\n

    \n
    \u2605\u2605\u2605\u2605\u2605<\/div>\n

    “Our AMR fleet deploys EP-FPG060 in the drive wheel pod. The compact round housing press-fits into our 60 mm hub bore \u2014 the wheel pod axial length is 18 mm shorter than our previous design with a worm motor package. That extra 18 mm matters for our narrow-aisle navigation margins. At \u226456 dB noise we meet the EU human-collaborative zone regulation without any additional acoustic treatment.”<\/p>\n

    \n
    PW<\/div>\n
    \n
    Park W., AMR Platform Designer<\/div>\n
    Mobile Robotics OEM \u2014 Suwon, Korea<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    <\/p>\n

    \n
    \u2605\u2605\u2605\u2605\u2605<\/div>\n

    “For our AS\/RS stacker crane X\/Y travel, we use EP-FAD P1 \u2014 the 30,000-hour S1 design life was the deciding factor. At 3-shift continuous operation the crane runs ~6,500 hours per year. EP-FAD P1 gives a projected 4.6-year interval to first service inspection, which aligns with our planned maintenance calendar. The C1\u2013C10 motor adapter made Yaskawa qualification straightforward with the same tooling we already use on our packaging line FAB series.”<\/p>\n

    \n
    CJ<\/div>\n
    \n
    Choi J., Mechanical Systems Lead<\/div>\n
    AS\/RS Crane Manufacturer \u2014 Changwon, Korea<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    <\/p>\n

    \n
    \n

    <\/p>\n

    Related Products & Upgrade Path<\/h3>\n
    \n
    \"Korea<\/div>\n

    Most AGV and warehouse automation projects begin with EP-FPG\/FPGA economy series<\/a> for the main drive wheel and conveyor axes. As requirements evolve \u2014 for example, when adding high-precision pick-and-place arms to an AGV, or upgrading to a higher-specification AS\/RS crane \u2014 the same C1\u2013C10 motor adapter qualification covers the upgrade path to EP-FAD P1<\/a> or EP-FAB P0<\/a> without any motor interface re-engineering.<\/p>\n

    For conveyor systems with right-angle motor layouts<\/strong>, the EP-FABR series<\/a> provides up to 200:1 in a single unit with a square-flange 90\u00b0 output. For robot-arm options on mobile platforms, see the full EP series product range<\/a>. External reference: for CV joint and driveshaft components in heavy AGV applications, see cvjointdriveshaft.com<\/a>.<\/p>\n<\/div>\n

    <\/p>\n

    Frequently Asked Questions \u2014 AGV Drive Gearbox Selection<\/h3>\n
    \nWhy is a planetary gearbox more efficient than a worm gearbox for AGV drive wheels?\uff0b<\/span><\/summary>\n
    Worm gearboxes transmit torque via sliding contact between the worm shaft and worm wheel \u2014 a type of contact that generates significant heat and has an inherent efficiency ceiling around 65% at best (and often lower depending on lead angle and lubrication condition). Planetary gearboxes transmit torque via rolling contact between helical planet gears and the ring gear \u2014 a contact geometry that generates far less heat and achieves \u226597% transmission efficiency. In a single drive unit the difference translates to 38% less motor current for the same output torque. In a fleet of 200 AGV drive units, this difference determines whether you can reduce battery capacity, motor sizing, or both \u2014 all of which affect the total system cost beyond the gearbox unit price.<\/div>\n<\/details>\n
    \nWhat does “round housing press-fit into wheel hub bore” mean in practice?\uff0b<\/span><\/summary>\n
    The EP-FPG housing outer diameter is machined to an exact fit tolerance \u2014 for example, FPG060 has a 60 mm OD machined to an h6 tolerance, which press-fits into a hub bore machined to H7. No separate adapter bracket, no additional bearing housing, and no through-bolts between the gearbox flange and the wheel structure. The gearbox body is the wheel hub bearing surface. This eliminates between two and four parts from the wheel drive assembly (bracket, bracket bolts, separate bearing housing, housing-to-bracket fasteners), reduces assembly time, eliminates two scheduled torque-check maintenance intervals for the bracket fasteners, and reduces the axial envelope of the drive pod by 15\u201322 mm depending on the previous design. The output shaft engages the wheel bore directly via a keyway or spline.<\/div>\n<\/details>\n
    \nIs the EP-FPG suitable for cold storage warehouse environments (\u221220\u00b0C)?\uff0b<\/span><\/summary>\n
    Standard EP-FPG\/FPGA units use CASTROL LMX grease, rated for a minimum operating temperature of 0\u00b0C. For cold storage applications at \u221210\u00b0C to \u221230\u00b0C, Korea Ever-Power recommends specifying the EP-FAD P1 series with NYOGEL 792D lubrication, which is rated to \u221210\u00b0C. For deep-freeze environments below \u221210\u00b0C, contact sales@planetary-gearboxes.cn for a cold-rated grease specification \u2014 the sealed housing and DIN 6\u20137 gear accuracy remain unchanged, only the lubricant grade is substituted. Do not operate a standard CASTROL LMX-filled unit below 0\u00b0C without confirming the low-temperature viscosity specification with the application engineering team.<\/div>\n<\/details>\n
    \nHow does the C1\u2013C10 motor adapter work across different servo motor brands?\uff0b<\/span><\/summary>\n
    The C1\u2013C10 designation refers to ten standard motor pilot diameter and bolt-circle combinations that cover the vast majority of servo motors from Siemens, Yaskawa, Mitsubishi, Panasonic, ABB, Bosch Rexroth, and other major brands. Each adapter ring is a precision-machined aluminium clamp-ring that fits the motor front flange and pilots the motor shaft into the gearbox input coupling without play. Because the C1\u2013C10 ring geometry is identical across all eight EP-series (FAB, FABR, FAD, FADR, FADS, FAL, FALR, FPG\/FPGA), an AGV OEM that qualifies a motor-to-gearbox interface for EP-FPGA can use the same adapter and the same qualification documentation if they later specify EP-FAD or EP-FAB on the same project \u2014 with no re-machining or re-qualification required.<\/div>\n<\/details>\n
    \nWhat is the minimum order quantity for OEM volume pricing on EP-FPG?\uff0b<\/span><\/summary>\n
    There is no minimum order quantity for standard catalogue stock items (FPG040 through FPG160, all standard ratios in P2\/standard backlash grade). Volume pricing schedules are available from 50 units upward per frame size per order, with additional breaks at 100, 250, and 500 units. For OEM project pricing on large fleet deployments (200+ units per installation), contact sales@planetary-gearboxes.cn with: (1) frame size and ratio required, (2) motor model and C-adapter specification, (3) annual volume estimate, and (4) delivery schedule. Korea Ever-Power maintains FPG040\u2013120 standard ratio units in stock for 5\u201310 day delivery on orders up to 50 units.<\/div>\n<\/details>\n

    <\/p>\n

    \n
    Specify EP-FPG\/FPGA for Your AGV or Warehouse Project<\/div>\n
    Send your wheel hub diameter, payload per wheel, and motor model \u2014 Korea Ever-Power will confirm the frame size, ratio, and C-adapter specification within 24 hours. OEM volume pricing available from 50 units.<\/div>\n

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

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

    \u226597% Efficiency \u2014 EP-FPG Series 38% Motor Current Saving vs. Worm \u226456dB Noise Level \u2014 EP-FPG040 IP64 Standard \u2014 IP65 Available 20,000hr Design Life (S5 Intermittent) C1\u2013C10 Universal Motor Adapter Engineering Context Why AGV & Warehouse Automation Demands a Better Drive Gearbox Than Worm Korea Ever-Power EP-FPG economy planetary gearbox \u2014 round housing press-fits directly […]<\/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-159","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\/159","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=159"}],"version-history":[{"count":3,"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/posts\/159\/revisions"}],"predecessor-version":[{"id":165,"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/posts\/159\/revisions\/165"}],"wp:attachment":[{"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/media?parent=159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/categories?post=159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/planetary-gearboxes.cn\/ko\/wp-json\/wp\/v2\/tags?post=159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}