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Planetary Gear Motor Manufacturer

Planetary Gear Motor For Precision Torque And Compact Drive Systems.

Shenghe planetary gear motors — also listed as planetary gearbox motors, planetary motors or planetary gearboxes with motor — combine brushless DC motors with precision planetary gearboxes to deliver high torque density, low backlash and compact coaxial output for robotics, AGV and industrial automation applications. Available as dc planetary gear motor or brushless planetary gear motor configurations with OEM/ODM support.

  • PF/PL/AB series planetary gearboxes from 42mm to 180mm
  • Custom gear ratios with efficiency up to 96%
  • Matched motor + gearbox sets for simplified OEM procurement
Terminology

Planetary Gear Motor, Planetary Gearbox Motor & Planetary Motor — Same Product, Different Names.

Four search terms — planetary gear motor, planetary gearbox motor, planetary motor and planetary gearbox with motor — describe the same physical hardware: a coaxial reduction drive using a central sun gear, three to five surrounding planet gears and an outer ring gear, bolted to an electric motor as one matched assembly. Why so many names?

  • Electrical engineers call it a "gear motor" — the motor is their domain, the gearbox is the accessory bolted to the output shaft.
  • Mechanical engineers call it a "gearbox motor" or "gearbox with motor" — the gearbox is the engineered component, the motor is the prime mover driving it. See also /brushless-gearbox/ for the gearbox-led product framing.
  • Procurement systems compress to "planetary motor" — B2B marketplaces, ERP item masters and RFQ tooling truncate the product description for searchability.
  • British / European engineers say "epicyclic" — DIN 868, BSI and ISO standards use the academically-correct term. The American gear industry uses "planetary" as the commercial synonym. See our /epicyclic-gear-motor/ engineering reference for the DIN-867 module-based notation and Willis-equation kinematics treatment.

Regardless of which term your RFQ uses, this page is the right landing point. Quick links to the closest variants: DC planetary gear motor (brushed + brushless 12V–72V), BLDC planetary gear motor (brushless-only master), 12V / 24V / 48V voltage-specific SKU pages.

Planetary gear motor with precision planetary gearbox
Planetary Gearbox Advantages

High Efficiency, Compact Size, Low Backlash

A planetary geared motor, also known as an epicyclic gear motor, distributes load across multiple planet gears for higher torque capacity in a smaller envelope. This makes it ideal for high torque planetary gear motor applications where space and precision matter.

  • Up to 96% single-stage efficiency with low heat generation
  • Coaxial input/output for compact, inline installation
  • Backlash as low as 15 arcmin for precision positioning
Technical Parameters

PF Series Planetary Gearbox Specifications

Parameter PF-57 PF-86 PF-115
Reduction Ratio (1-stage) 4, 5, 10 4, 5, 10 4, 5, 10
Reduction Ratio (2-stage) 16–100 16–100 16–100
Rated Load 5 N.m 50 N.m 160 N.m
Max Load 12 N.m 160 N.m 400 N.m
Efficiency 95–90% 96–84% 94–82%
Backlash ≤15 arcmin ≤15 / ≤25 arcmin ≤15 / ≤25 arcmin
Weight 0.8–1.1 kg 2.0–2.5 kg 5.5–7.0 kg
Rated Input Speed 3000 RPM 3000 RPM 3000 RPM
Max Input Speed 5000 RPM 5000 RPM 4500 RPM
Protection IP65 IP65 IP65

Q12 DIN 6 ground gears reduce single-stage backlash to <5 arc-min for precision positioning. Larger 142mm and 180mm frames available on request — up to 1,151 N.m output torque.

Application Areas

Where Planetary Gear Motors Are Used

01
Robotics

Joint drives and actuators requiring high torque density, low backlash and precise speed control in a compact planetary gear motor 42mm or 57mm package.

02
AGV & AMR

Wheel drive and steering modules for automated guided vehicles where a bldc planetary gear motor delivers smooth, efficient traction.

03
CNC Machines

Tool changers and axis drives that need repeatable positioning with minimal backlash from a precision planetary gearbox.

04
Packaging Machinery

Feed, seal and index drives where consistent speed and torque output from planetary gear motors improve throughput and reliability.

Quick Answers

Planetary Gear Motor FAQ For Buyers And Engineers.

Common questions about planetary gear motors, available ratios and matched BLDC motor sets answered for faster sourcing decisions.

What is a planetary gear motor?

A planetary gear motor, also called an epicyclic gear motor, pairs a motor with a planetary gearbox that uses sun, planet and ring gears to deliver high torque in a compact, coaxial package with high efficiency and low backlash.

What gear ratios are available?

Shenghe PF/PL/AB series planetary gearboxes offer single-stage ratios of 4, 5 and 10, with two-stage combinations for higher reduction. Custom ratios are available depending on size and application.

Can I get a BLDC motor with planetary gearbox as a set?

Yes. Shenghe supplies matched brushless planetary gear motor sets where the BLDC motor and planetary gearbox are selected, assembled and tested together for optimized performance and simplified OEM procurement.

Is a planetary motor the same as a planetary gear motor?

Yes. "Planetary motor" is shorthand commonly used by procurement teams for what the engineering catalogue calls a planetary gear motor. "Planetary gearbox motor" (mechanical-engineer framing) and "planetary gearbox with motor" (kit-style framing) describe the same hardware — a sun + planet + ring gearbox bolted to a motor as one matched unit.

What's a planetary gearbox with motor?

The kit-style framing for the same product. The gearbox and motor are supplied as one matched assembly with single PO, single warranty and end-of-line dyno test — eliminating concentricity stack-up and duty-cycle mismatches that surface when integrating gearbox from supplier A with motor from supplier B.

Why are there so many names for this product?

Electrical engineers say "gear motor"; mechanical engineers say "gearbox motor" or "gearbox with motor". American catalogues use "planetary", British / German / ISO standards use "epicyclic" (DIN 868) — see /epicyclic-gear-motor/ for the academic reference. Procurement systems compress to "planetary motor" for searchability. All four terms describe the same coaxial reduction drive.

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