Wankie Precision Cycloidal Reducers & Modular Gear Motors: BXJ-E, BXJ-C, BXJ-F & R, P, K, S Series

Supply precision cycloidal planetary reducers and modular industrial gear motors from Jiangsu Wankie Drive Technology Co., Ltd. (Wankie Drive, Taixing, China): BXJ-E solid-shaft, BXJ-C hollow-bore, BXJ-F lightweight, and BXJ-N robotic reducers (< 1 arcmin backlash, > 6000 h life), alongside R, P, K, S modular gear motors and ZGY shaft-mounted reducers.

Wankie BXJ-E Series Precision Cycloidal Reducers (BXJRD-E, Backlash < 1 arcmin)

Solid-shaft two-stage cycloidal pin-wheel planetary reducers of the BXJ-E series featuring a flat compact housing are engineered for base and shoulder joints of industrial robots, welding positioners, and CNC machinery.

Combining an involute spur input stage with a cycloidal planetary stage on three eccentric shaft bearings, they achieve < 1 arcmin backlash, 250% overload capacity, and > 6000 h rated service life.

Frame sizes: BXJ-20E, BXJ-25E, BXJ-35E, BXJ-40E, BXJ-65E, BXJ-80E, BXJ-110E, BXJ-160E, BXJ-320E, BXJ-320E3, and BXJ-450E
Transmission error and angular backlash < 1 arcmin, rated fatigue life exceeding > 6000 h at nominal load
Acceleration and braking overload capacity up to 250% (2.5x) of rated output torque with high torsional stiffness
BXJRD-E configuration (including BXJ20E-RD) supplied with an integrated servo motor adapter flange and clamping hub

Wankie BXJ-C Series Hollow-Shaft Precision Cycloidal Reducers (BXJC-C)

Hollow-bore cycloidal precision reducers of the BXJ-C series feature a large central through-hole in the output flange and hub, allowing servo power cables, pneumatic hoses for spot-welding guns, cooling lines, or laser beams to pass directly along the rotation axis.

Rated for < 1 arcmin backlash, 250% (2.5x) overload torque, and > 6000 h operating life.

Model lineup: BXJ-10C, BXJ-22C, BXJ-27C, BXJ-50C, BXJ-100C, BXJ-120C, BXJ-200C, BXJ-260CA, BXJ-320C, BXJ-320CA, BXJ-400C, BXJ-500C, BXJ-500CA, and BXJ-900C
Large central hollow bore for protected internal routing of wire harnesses, air lines, and optical paths
Two-stage speed reduction allowing flexible ratio customization by swapping the first-stage spur gear pair
Angular backlash < 1 arcmin, 250% (2.5x) overload resistance, and > 6000 h service life in rotary tables and robots

Wankie BXJ-F Series Lightweight Precision Reducers (16–36% Weight Reduction)

The BXJ-F lightweight cycloidal reducer series is engineered for distal robot wrists and high-speed pick-and-place manipulators where minimizing moving mass is critical.

While preserving torsional rigidity, < 1 arcmin backlash, and > 6000 h life, envelope dimensions are reduced by 8–20% and unit weight is cut by 16–36% compared to standard E-series units.

Series sizes: BXJ-25F, BXJ-42F, BXJ-60F, BXJ-80F, BXJ-100F, BXJ-125F, BXJ-160F, BXJ-260F, BXJ-320F, BXJ-380F, BXJ-500F, and BXJ-700F
16–36% lower unit weight and 8–20% smaller housing envelope without sacrificing torsional stiffness
Enhances acceleration dynamics and lowers servo power consumption on elbow and wrist axes of industrial robots
Kinematic accuracy and backlash < 1 arcmin, 250% (2.5x) peak overload capacity, and > 6000 h rated life

Wankie BXJ-N Series Heavy-Duty Robotic Reducers (Model BXJ125N, 42CrMo HRC60 Steel)

Heavy-duty cycloidal planetary reducers of the BXJ-N series (BXJN-N execution, flagship model BXJ125N) were co-developed with the State Key Laboratory of Mechanical Transmission at Chongqing University.

Core components are machined from forged 42CrMo and 35CrMo alloy steels carburized and hardened to HRC60 for 6-axis industrial robots and AGV drives.

BXJN-N series configuration (including model BXJ125N) built for multi-axis welding, palletizing, and machine-tending robots
Forged 42CrMo and 35CrMo alloy steel gears and cycloidal discs carburized, quenched, and profile-ground to HRC60
Integrated high-capacity angular contact main bearings supporting heavy external overturning moments without external support
Backlash < 1 arcmin, 250% (2.5x) overload rating, and > 6000 h life in CNC tool changers and heavy AGV traction units

Wankie R Series Modular Coaxial Helical Gear Motors (GB3141 N220 Gear Oil)

Modular coaxial helical gear motors of the R series deliver high meshing efficiency, a heavily ribbed cast-iron housing for maximum rigidity, and low vibration levels. Helical gears undergo carburizing, quenching, and precision profile grinding.

Units are lubricated with GB3141 N220 medium-duty extreme-pressure industrial gear oil.

Mounting variants: foot-mounted R, compound tandem R..RF for ultra-high ratios, solid input shaft R..AD, and B5 flange RF
Single-stage high-speed executions RX (foot) and RXF (flange), plus RM series with an extended reinforced bearing hub
Ribbed cast-iron housing with an enlarged oil sump ensuring rapid heat dissipation during continuous operation
Carburized ground helical gears lubricated with GB3141 N220 oil for conveyors, dosing pumps, and agitators

Wankie P Series Modular Parallel-Shaft Helical Gear Motors

Modular parallel-shaft helical gear motors of the P series are designed for space-saving side mounting along belt conveyors, roller tables, and hoisting mechanisms.

Available with solid output shafts, B5/B14 flanges, or hollow bores configured for keyway, shrink disc, or involute spline shaft mounting.

Base configurations: foot-mounted P, B5 flange PF, B14 small flange PFK, and motor bell-housing adapter PFK..Z
Hollow-shaft variants: keyed hollow bore (PK), shrink disc coupling (PS), and splined hollow bore (PH)
Compound two-stage tandem assemblies P..RF, PF..RF, PK..RF for high reduction ratios and solid-input versions P..AD, PK..AD
Slim cast-iron housing geometry with profile-ground helical gearing optimized for conveyor and travel drives

Wankie Right-Angle Gear Motors: K Series Helical-Bevel & S Series Helical-Worm

For 90-degree right-angle power transmission, Wankie manufactures high-efficiency K series helical-bevel gear motors with carburized spiral bevel gearing alongside low-noise S series helical-worm gear motors providing mechanical self-locking capability on inclined conveyors and hoists.

K series helical-bevel lineup: foot-mounted KD, hollow-shaft KDK (keyed), KDS (shrink disc), KDH (splined), and KK
Flange-mounted bevel units KF, torque-arm mounted KTK, and compound tandem assemblies KD..RF, KDK..RF, KF..RF
S series helical-worm lineup: foot-mounted SD, flange SF and SFK, hollow bore SK (keyed) and SS (shrink disc), torque arm STK
Compound helical-worm drives SD..RF, SF..RF, SK..RF and solid input shaft executions KD..AD, SD..AD, SK..AD

Wankie ZGY Series Shaft-Mounted Hard-Tooth Gear Reducers & Genuine Drive Spares

ZGY series suspension shaft-mounted cylindrical gear reducers with surface-hardened and ground gear teeth mount directly onto the drive pulley shaft of belt conveyors and bucket elevators, eliminating alignment couplings and baseplates.

We also supply genuine spares: 42CrMo/35CrMo gear sets, eccentric shafts, adapter flanges, hollow sleeves, and seals.

Direct hollow-hub mounting of ZGY reducers onto conveyor drive drum shafts restrained by a pivoted torque arm
Helical gear stages manufactured from carburized and quenched alloy steel (hardened tooth profile HRC60)
Optional integrated backstop clutch preventing reverse rollback on loaded inclined belt conveyors and elevators
Genuine Wankie spare parts: BXJRD servo motor adapter flanges, shrink discs, bearing kits, gear pairs, and shaft seals

Wankie Precision Reducer & Gear Motor Identification by Nameplate Code

Chinese drive manufacturer Jiangsu Wankie Drive Technology Co., Ltd. (brand Wankie / Wankie Drive, located at No. 199 Guoqing East Road, High-Tech Industrial Park, Taixing City, Jiangsu Province, China) was founded on December 11, 2015 as the precision transmission subsidiary of Tailong Group.

Spanning 66000 m² with over 270 employees (including a 26-engineer precision reducer R&D team), the factory operates more than 90 CNC grinding and coordinate measuring centers imported from Germany and Japan inside a certified Provincial Demonstration Smart Workshop.

To select a complete reducer assembly or replacement parts accurately, specify the full factory model code from the nameplate: for precision cycloidal reducers, provide the series, frame size, and reduction ratio (such as BXJ-20E, BXJ-80E, BXJ-320E, BXJ20E-RD, BXJ-100C, BXJ-320CA, BXJ-125F, or

BXJ125N); for modular gear motors, specify the mounting code, frame size, ratio, and motor power (series R, RX, RF, RM, P, PF, PK, PS, PH, KD, KDK, KDS, KF, SD, SF, SK, or ZGY shaft-mounted unit).

If the nameplate is missing or worn, send multi-angle photos of the gearbox with a scale ruler along with the output shaft diameter (or hollow bore diameter on BXJ-C / PK / KDK), servo motor flange pilot dimensions, mounting position (M1–M6), and required output torque.

Two-Stage Cycloidal Pin-Wheel Kinematics of the BXJ Series (Chongqing University Co-Development)

The Wankie BXJ precision reducer family was jointly developed with the State Key Laboratory of Mechanical Transmission at Chongqing University and is backed by 31 authorized patents (including international invention patents on modified involute-cycloidal tooth profiles).

The mechanism employs a two-stage closed differential gear train: in the first stage, precision involute spur gears reduce the servo motor input speed and distribute torque across two or three planetary eccentric shafts.

In the second stage, the eccentric shafts drive a pair of cycloidal discs offset by 180 degrees that mesh against stationary needle-bearing pins arranged around the internal ring housing.

Simultaneous multi-tooth contact and profile-modified raceways deliver angular backlash and transmission error under < 1 arcmin, exceptional torsional stiffness, vibration-free motion, and acceleration/braking overload capacity up to 250% (2.5x) of rated torque with a design life exceeding > 6000 h.

The overall reduction ratio can be tailored to match specific servo motor speed-torque curves simply by changing the first-stage spur gear pair while keeping the outer housing dimensions unchanged.

Selecting Between Solid BXJ-E, Hollow-Bore BXJ-C, Lightweight BXJ-F & Heavy-Duty BXJ-N

Four structural series within the BXJ platform address diverse robotics and machine tool architectures.

The standard BXJ-E series (sizes BXJ-20E, BXJ-25E, BXJ-35E, BXJ-40E, BXJ-65E, BXJ-80E, BXJ-110E, BXJ-160E, BXJ-320E, BXJ-320E3, BXJ-450E) features a flat compact housing and a three-bearing double-eccentric shaft support; the BXJRD-E execution comes factory-fitted with a servo motor adapter flange

and clamping coupling.

The hollow-shaft BXJ-C series (models BXJ-10C, BXJ-22C, BXJ-27C, BXJ-50C, BXJ-100C, BXJ-120C, BXJ-200C, BXJ-260CA, BXJ-320C, BXJ-320CA, BXJ-400C, BXJ-500C, BXJ-500CA, BXJ-900C) incorporates a large central through-bore so welding cables, pneumatic hoses, coolant pipes, or laser beams pass directly

through the rotation center of rotary tables and positioners.

The lightweight BXJ-F series (from BXJ-25F to BXJ-700F) optimizes carrier and housing geometry to shrink envelope dimensions by 8–20% and cut weight by 16–36% for robot wrists and elbows, whereas the BXJ-N series (BXJ125N) is reinforced for heavy overturning moments on base axes.

42CrMo & 35CrMo Forged Alloy Steels, HRC60 Heat Treatment & Metrology Control

Maintaining < 1 arcmin backlash across > 6000 h of cyclic robotic operation relies on strict metallurgical and metrological discipline at the Wankie plant in Taixing.

Load-bearing gears, cycloidal discs, eccentric shafts, and output flanges are machined from high-density forged 42CrMo and 35CrMo alloy steels rather than conventional bar stock.

Forged blanks undergo preliminary quenching and tempering followed by CNC turning and controlled carburizing heat treatment, producing a wear-resistant surface layer hardened above HRC60 while retaining a tough core that absorbs shock loads during emergency stops.

Final tooth profile grinding and bearing raceway finishing are performed on imported CNC coordinate grinding centers, followed by 100% test-bench inspection of kinematic transmission error, starting torque, acoustic noise, and seal integrity.

Modular Coaxial (R Series) & Parallel-Shaft (P Series) Industrial Gear Motors

Alongside robotic reducers, Wankie manufactures heavy-duty modular industrial gear motors built around standardized gear stages.

The coaxial helical R series encompasses foot-mounted R units, compound two-unit R..RF assemblies for ultra-low output speeds, solid input shaft R..AD units, single-stage high-speed RX and RXF models, B5 flange RF units, and the RM series with an extended bearing housing for agitators and mixers.

Parallel-shaft flat helical gear motors of the P series (foot-mounted P, B5 flange PF, B14 flange PFK, keyed hollow-bore PK, shrink-disc PS, splined hollow-bore PH, plus compound P..RF and PK..RF drives) mount directly alongside conveyor rollers and travelling gantries where axial space is

restricted.

All R and P series housings are produced from high-tensile gray iron with internal stiffening ribs and filled with GB3141 N220 extreme-pressure industrial gear oil.

Right-Angle Gear Motors (K & S Series) & ZGY Shaft-Mounted Conveyor Reducers

Where drive layouts require a 90-degree change in power flow, Wankie offers the K and S right-angle modular gear motor families.

The K series helical-bevel range (foot-mounted KD, hollow-shaft KDK, KDS, KDH, and KK, flange-mounted KF, and torque-arm KTK) delivers high mechanical efficiency across both rotation directions for continuous reversing duty.

The S series helical-worm range (models SD, SF, SFK, SK, SS, STK, and compound SD..RF, SK..RF) pairs a helical input stage with a worm output stage, achieving quiet shock-absorbing operation and natural self-locking at high reduction ratios.

For belt conveyors, bucket elevators, and bulk material handling lines, Wankie produces ZGY series suspension shaft-mounted reducers with HRC60 hardened helical teeth that slip directly onto the head pulley shaft and anchor via a pivoted torque arm.

Industrial Applications in 6-Axis Robotics, CNC Machine Tools & AGV Logistics

Precision cycloidal reducers of the BXJ-E, BXJ-C, BXJ-F, and BXJ-N series are installed across the joints of 6-axis welding, painting, palletizing, and machine-tending robots, two-axis welding positioners, CNC rotary indexing tables, and automatic tool changers (ATC) on machining centers.

In intralogistics and flexible automation cells, compact BXJ reducers and K series right-angle gear motors drive steering and traction wheels on heavy automated guided vehicles (AGV/AMR), CNC tube bending machines, gantry loaders, medical imaging gantries, and solar tracking actuators.

We supply both complete reducers for OEM equipment builds and genuine overhaul kits: servo adapter flanges, clamping couplings, main cross-roller/angular bearings, oil seals, and gear sets.

Engineering Verification, Custom Servo Flanges & International Export Delivery

SpareX coordinates direct factory procurement and international export delivery of Jiangsu Wankie Drive Technology Co., Ltd. precision cycloidal reducers, modular gear motors, and genuine spare parts for robotics integrators, machine tool builders, and industrial maintenance teams.

Every order includes verification of the servo motor interface geometry (pilot spigot diameter, bolt circle diameter, shaft diameter, and keyway/clamping length) to ensure plug-and-play mechanical mounting.

We fulfill orders starting from a single prototype reducer or replacement gear set up to serial production batches, providing complete export customs documentation and door-to-door logistics.

Servo adapter flange configurations, factory lead times, and export pricing for Wankie precision reducers and gear motors are calculated individually upon inquiry; public retail price lists are not published by the manufacturer.

We operate as an independent international supplier and are not an exclusive agent of Jiangsu Wankie Drive Technology Co., Ltd.