Planetary Gearboxes
for Every Drive Challenge
From compact track drives and precision servo gearboxes to heavy-duty winch drives and wind turbine gearboxes — browse our complete planetary gearbox range, all engineered to DIN & AGMA standards and 100% load-tested before shipment.
ISO 9001:2015
Quality Certified
CE & RoHS
European Compliant
100% Load Tested
Every unit before shipment
24h Quote
MOQ 1 unit accepted
20+ Countries
Global OEM supply
Complete Product Range
Planetary Gearbox Types
Each type is engineered for specific drive applications.
Contact us with your torque, ratio, and mounting requirements and receive a quotation within 24 hours.
Track Drive
Final drive gearboxes for excavators, agricultural crawlers, and tracked vehicles. High torque density with 2-speed option.
Winch Drive
High-torque drives for marine deck winches, cranes, and mooring systems. Integrated spring-set holding brake standard.
Wheel Drive
Compact hub-mounted planetary drives for wheeled and tracked machines. Hydraulic or electric motor input, IP67 sealed.
Power Wheel
Integrated wheel-drive units combining gearbox and hub assembly. For large AGVs, forklifts, and industrial vehicles.
Swing Gearbox
Upper-body swing drives for excavators and construction machinery. High shock resistance, compact, hydraulic motor flange.
Slewing Drive
Integrated slewing unit with ring gear and bearing. Self-locking worm option. Solar trackers, cranes, and antenna positioning.
In-line Planetary Gearbox
Coaxial input-output for conveyors, mixers, and industrial machinery. Wide ratio range, foot or flange mount, IEC motor adapter.
Right Angle Planetary Gearbox
90° output for applications where inline shaft arrangement is impractical. Bevel or worm output stage combined with planetary input.
Planetary Gearbox for Feed Mixer
Designed for vertical and horizontal TMR cattle feed wagons. Rated for 3× shock torque, stainless option for washdown.
Planetary Gearbox for Wind Turbine
Yaw and pitch control drives for wind turbines. Corrosion-resistant housing, extended service intervals, rated to –40°C.
How It Works
Planetary Gearbox Operating Principle
Sun Gear Receives Input Power
The motor shaft connects directly to the central sun gear, delivering high-speed, low-torque rotational input to the planetary system.
Planet Gears Distribute the Load
Three to six evenly spaced planet gears simultaneously mesh with the sun gear and the internal ring gear, distributing the load across multiple contact points to dramatically increase torque density.
Ring Gear Provides Reaction Force
The internal ring gear is fixed to the housing, acting as a reaction member. Planet gears simultaneously rotate (spin) and orbit (revolve) around the sun gear, generating the speed reduction effect.
Planet Carrier Delivers High Torque Output
The planet carrier supports all planet gears and rotates at the orbital speed of the planets, driving the output shaft at reduced speed and multiplied torque — completing the gear reduction.
Multi-Stage Cascading for Higher Ratios
Connecting the carrier of one stage to the sun gear of the next creates a multi-stage planetary series (2–4 stages), achieving overall gear ratios from 3 up to 10,000 : 1 to suit any application.
Replacement of Brevini Riduttori
- Industrial Planetary Gearbox: EM Series, ED Series, ET Series, EQ Series, EC Series, E Series, S Series
- Winch Drive Planetary Gearbox: PWD Series, RCW Series, SLW Series, SMW Series
- Slewing Drive Planetary Gearbox: RPR Series, TCS Series, SD Series
- Wheel Drives Planetary Gearbox: CTD Series, CTU Series,
- Cattle Feed Mixer Driver Planetary Gearbox: ECS1102 ESC1522 ECS2522
Trasmital Replacement of Bonfiglioli
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Replacement of Bosch Rexroth
- GFT Series Planetary Gearbox
- GFT-W Series Planetary Gearbox
- GFB Series Planetary Gearbox
Replacement of Comer Industries
- PGA Series Auger Drive Planetary Gearbox
- PG Series Feed Mixer Planetary Gearbox
- PGR-T Track Drive Planetary Gearbox
- PGR-W Wheel Drive Planetary Gearbox
- PGR-H Winch Drive Planetary Gearbox
Replacement of Reggiana Riduttori
- RR Series Linear and Angular Planetary Gearbox
Replacement of Rossi
- R2E Series Heavy Duty Planetary Reducer
Replacement of Zollern
- ZHP Series Planetary Slewing Gear Gearbox
Fairfeild
Brand swap
Alternative Brands We Can Replace
Our planetary gearboxes, wheel drives, winch drives, and track drive gearboxes are all designed according to the mounting dimensions and key performance specifications of leading international brands. This ensures seamless interchangeability, making our products reliable and cost-effective replacements.
Please note that all brand names and model numbers mentioned are for reference only and are intended to help customers identify the appropriate configuration.
For projects requiring special specifications or non-standard solutions, our experienced engineering team can provide customized designs to meet your specific operational needs.
Ever-Power does not sell any products of this brand; mentioning this brand is solely for customer convenience and does not constitute any infringement.
Why Choose a Planetary Gearbox?
Ultra-high torque density
With multiple planetary gears evenly distributing the load, it can transmit 3 to 5 times more torque than traditional parallel shaft reducers within the same volume, significantly reducing the overall size of the equipment.
Transmission efficiency ≥ 97%
The carburizing and hardening grinding process achieves a tooth surface accuracy of ISO 5, resulting in extremely low meshing loss and a single-stage transmission efficiency of up to 97%, significantly reducing operating energy consumption.
Low backlash and high precision
The precision planetary series boasts a backlash of ≤ 3 arcmin, ensuring high repeatability and meeting the stringent precision requirements of applications such as servo drives and robot joints.
Compact coaxial design
Input and output shafts are arranged coaxially, with small radial dimensions and short axial length, making it easy to integrate into various compact mechatronics design solutions.
High Shock Resistance & Long Life
Rigid one-piece planet carrier withstands peak shock torques up to 3× rated load. Lifetime-sealed lubrication ensures ≥ 20,000 hours of service with zero maintenance.
Modular & Customizable
Output flanges, mounting styles, input interfaces, and lubrication types are all configurable on request. IEC/NEMA motor flange direct-mount adapters available for all series.
How to Order
From Enquiry to Delivery in 4 Steps
We handle product selection, production, quality testing, export documentation, and shipping — all in one place.
01
Send Your Requirements
Email or submit your RFQ with required torque, ratio, mounting type, and application. Our form includes helpful spec prompts.
02
Receive Your Quotation
Within 24 business hours: recommended model, unit price, lead time, and dimensional drawing if requested.
03
Confirm & Produce
Approve the quote and production begins. Every unit is 100% load-tested and issued a quality report before shipment.
04
Shipped to Your Port
FOB, CIF, or EXW. Full export docs — CO, CE declaration, packing list — included for Canada, Australia, Europe & USA.
Planetary Gearbox Product Showcase
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EP-PC200-6 Swing Gearbox 20Y-26-00150 — OEM Excavator Swing Drive Replacement
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Hyundai EP-R130 Swing Gearbox — OEM-Spec Excavator Swing Reducer
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CAT 320C 320D Swing Gearbox 148-4644 — OEM-Spec Swing Motor Drive Reducer
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EP-148-4644 Swing Drive Reduction Gearbox — Direct Fit for CAT 320C & 320D Excavators
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307 Series Right Angle Planetary Gearbox: Heavy-Duty Bonfiglioli Replacement
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Right Angle Planetary Gearbox — NB300R Series Replacement, Up to 450,000 Nm
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EP-300R Right Angle Planetary Gearbox Replacement 500,000 Nm
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S Series Planetary Gearbox 34,000–2,170,000 Nm | OEM Replacement
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311 Series Planetary Gearbox | Bonfiglioli 311 Replacement OEM
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E Series Planetary Gearbox | Brevini E10–E260 Replacement
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EP-310 Series Inline Planetary Gearbox 25kNm 150kW Replaces Bonfiglioli 310
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EP-306 Series Inline Planetary Gearbox 75kW 8.5kNm OEM Replacement Bonfiglioli 306
FAQ
Frequently Asked Questions
How do I select the correct gear ratio for my application?
Gear ratio selection involves three key steps:
- ① Divide the required load output torque by the motor rated torque (include a safety factor of 1.5–2.0);
- ② Calculate output speed = motor speed ÷ gear ratio;
- ③ Verify that the motor and gearbox thermal power rating is compatible at the chosen ratio.
We recommend using our free Excel selection tool, or contacting a technical engineer for guided selection support.
What is backlash, and how does it affect my application?
Backlash is the angular play at the output shaft when the input is reversed, measured in arcminutes (arcmin). The lower the backlash, the higher the reversal accuracy. For precision positioning (robotics, CNC), choose ≤ 5 arcmin from our Precision Series. General drive applications can accept ≤ 15 arcmin without issue. Excess backlash leads to cumulative positioning errors that degrade machining and motion accuracy.
Do you offer customization, and what is the minimum order quantity?
Yes — we support deep customization including output flange dimensions, input interface type (IEC/NEMA motor flange), mounting style (foot / flange / suspended), lubrication type (food-grade / low-temperature / high-temperature), and surface color & labeling. Standard stock models have no MOQ restriction. Custom models typically require a minimum of 5 units; exact terms are confirmed at the time of quotation.
Do planetary gearboxes require periodic lubrication oil changes?
Standard series gearboxes use a lifetime-sealed lubrication design — no re-greasing or oil changes are required under normal operating conditions, with a service life of ≥ 20,000 hours. Heavy-duty series operating under extreme conditions (high temperature, high speed, high-frequency vibration) should have the grease inspected and replenished every 8,000 hours or 2 years. Refer to the lubrication specification table in the supplied maintenance manua
How do I confirm compatibility between a gearbox and my servo motor?
Check four key points:
- ① Motor output flange size (IEC 63/71/80/90/100 or NEMA 17/23/34) matches the gearbox input flange;
- ② Motor shaft diameter matches the gearbox input bore;
- ③ Motor rated torque is within the gearbox’s rated input torque range;
- ④ Motor speed (typically 1500 / 3000 rpm) is within the gearbox maximum input speed.
Send us your motor model number and we will confirm a compatible configuration within 24 hours.
What are your lead times and shipping options?
Standard stock models ship within 3–5 business days via DHL / FedEx international express with global coverage. Custom models typically ship in 15–25 business days depending on complexity. Large-volume project orders can be covered by a blanket purchase agreement with pre-stocked inventory. All orders include online shipment tracking and full export documentation (CIQ, Certificate of Origin, etc.).
Get In Touch
Not Sure Which Type You Need?
Tell us your application — torque requirements, motor type, mounting configuration, and environment — and our engineers will recommend the right gearbox type and series. Response within 24 hours, no minimum order quantity required.
24-hour quotation guarantee on all enquiries
MOQ 1 unit — no minimum order quantity requiredCE & ISO documentation included with every shipmentOEM / private labelling available on all 10 types