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BLDC Planetary Gear Motor

BLDC Planetary Gear Motor — Brushless DC Planetary Drives, 15W to 3kW, 12V–72V.

A BLDC planetary gear motor combines an electronically commutated brushless DC motor with a planetary gearbox — giving you high torque density, low backlash, and 20,000+ hour maintenance-free operation in a compact coaxial package. Shenghe manufactures BLDC planetary gear motors across six frame sizes in Cixi, Ningbo with matched controller kits tested on the same dyno bench.

  • Power 15W to 3kW — six frame sizes: 22 / 28 / 42 / 57 / 86 / 115 mm
  • Voltage 12V / 24V / 36V / 48V / 72V DC
  • Planetary ratios 3:1 to 500:1 — 1-stage, 2-stage, 3-stage
  • Output torque 0.5 N·m to 300 N·m
  • Backlash 5–30 arc-min standard; <5 arc-min Q12 ground gears on request
  • Matched controller kits: BLD22010 (24V/36V), BLD6010 (48V/72V), BLDB6010 servo
  • Sample 7–10 days, production 2–3 weeks ex-Cixi factory
15W–3kW Power Range
ISO 9001 + CE + RoHS
3:1–500:1 Planetary Ratios
20,000+ h BLDC Service Life
20 min Ningbo Port
Shenghe BLDC planetary gear motor — compact coaxial envelope with brushless DC motor and planetary gearbox, output shaft visible
BLDC planetary gear motor with 2-stage planetary gearbox — brushless motor housing, planetary gear set, output shaft.
Why BLDC + Planetary

Brushless Motor Meets High-Torque Compact Gearbox.

The brushless DC motor eliminates carbon brushes — no brush dust, no brush replacement, no commutator wear. The planetary gearbox shares load across 3+ planet meshes — 2–3× the torque density of spur gearing in the same envelope, with lower backlash for precision applications.

Together, this combination is the default choice when compact size, high output torque, long service life, and low maintenance all matter in the same drive axis. Typical savings vs brushed alternatives: 60–70% reduction in unplanned downtime on continuous-duty applications running 2,000+ hours per year.

  • 20,000+ hour service life — no brushes to replace, sealed-for-life gearbox grease (NLGI grade 2)
  • 85–92% motor efficiency — less heat, less energy cost, smaller thermal footprint in enclosed equipment
  • 2–3× torque density vs spur-geared alternatives in the same envelope
  • Low backlash 5–10 arc-min (1-stage) — precision motion without belt/coupling complexity
  • Matched controller kits — pre-paired motor + controller, dyno-tested, no field-tuning
Specification Overview

BLDC Planetary Gear Motor — Frame Size & Torque Envelope.

Select the frame size based on your continuous-duty output torque requirement. Each frame can be combined with 1-stage, 2-stage, or 3-stage planetary to hit the target ratio.

Frame (mm) Power Range Voltage Options Output Torque Typical Applications
22 mm 15–30W 12V / 24V 0.5–8 N·m Medical pumps, lab instruments, small actuators
28 mm 20–50W 12V / 24V 1.5–25 N·m Dental equipment, sample handlers, precision drives
42 mm 50–150W 24V / 48V 5–80 N·m Compact conveyors, labelling machines, winding
57 mm 100–400W 24V / 48V 12–180 N·m Packaging drives, textile equipment, indexing
86 mm 300–1000W 48V / 72V 40–280 N·m AGV traction, heavy conveyor, industrial actuators
115 mm 1–3 kW 48V / 72V 80–300 N·m Heavy-duty AGV, warehouse automation, large actuators

Note: Torque ranges shown are across all available gear ratios (3:1–500:1). Exact continuous-duty and peak torque per SKU confirmed at quote stage with dyno-test data.

Gear Ratios

Planetary Stage Count, Ratio Ranges & Backlash.

Choose the lowest stage count that hits your target ratio — fewer stages mean higher efficiency and tighter backlash.

Stages Ratio Range Standard Ratios Backlash Efficiency
1-stage 3:1 – 10:1 3, 4, 5, 6, 8, 10 5–10 arc-min ~94%
2-stage 12:1 – 100:1 12, 16, 20, 25, 30, 40, 50, 64, 80, 100 10–20 arc-min ~88%
3-stage 125:1 – 500:1 125, 160, 200, 250, 320, 400, 500 15–30 arc-min ~82%

Gear material: 20CrMnTi case-hardened steel, surface HRC 58–62, core HRC 32–40. AGMA Q9–Q11 standard; Q12 (DIN 6) ground gears available for precision applications requiring <5 arc-min backlash. Sealed-for-life lithium-complex grease, NLGI grade 2; NSF H1 food-grade grease on request.

Pricing Reference

BLDC Planetary Gear Motor Price Ranges (2026 FOB Ningbo).

Prices below are for standard BLDC planetary gear motor configurations at MOQ (50–100 units). Sample quantities (1–5 pcs) typically cost 40–80% more. Custom specifications quoted per project.

Frame Size Motor Only Motor + Planetary Gearbox Motor + Gearbox + Controller Kit
22–28 mm (15–50W) $20–$40 $35–$90 $65–$150
42 mm (50–150W) $30–$55 $55–$130 $90–$200
57 mm (100–400W) $45–$90 $80–$200 $130–$300
86 mm (300–1000W) $70–$150 $130–$350 $200–$450
115 mm (1–3kW) $120–$280 $250–$600 $350–$700

Volume pricing: 200–500 units: 5–10% discount. 500–1000 units: 10–15% discount. 1000+ units: 15–25% discount plus potential dedicated tooling at no extra cost. See BLDC motor wholesale pricing for distributor tiers.

How To Specify

5 Steps To Select Your BLDC Planetary Gear Motor.

01
Define output torque & speed

Required torque at the load × safety factor 1.5–2× = continuous-duty torque target. Required speed at the load = gearbox output rpm.

02
Set voltage from power source

12V/24V for battery-powered and compact equipment. 36V/48V for industrial automation and conveyor. 72V for high-power drives.

03
Pick frame size from torque envelope

22/28 mm for <25 N·m. 42 mm for 5–80 N·m. 57 mm for 12–180 N·m. 86 mm for 40–280 N·m. 115 mm for up to 300 N·m.

04
Select gear ratio & stage count

Ratio = motor rpm ÷ output rpm. Use the lowest stage count that hits the ratio — 1-stage (3:1–10:1), 2-stage (12:1–100:1), 3-stage (125:1–500:1).

05
Specify environment & options

IP54 or IP65 sealed? Encoder for closed-loop? Matched controller? Custom shaft/flange? Send the spec to the RFQ below.

Send The Specification

BLDC Planetary Gear Motor Inquiry.

Send target torque, output rpm, voltage, duty cycle, and your application — engineering returns a recommended frame + stage + ratio with dyno-projected figures.

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Matched Controller Kits

Pre-Paired Motor + Controller — No Field-Tuning Required.

Every BLDC planetary gear motor ships as a matched kit: motor + controller, pre-paired and tested on the same dyno bench. Firmware is parameterised for the motor's electrical constants and gear ratio — plug in power and signal, the drive runs.

Controller Voltage Range Current Control Mode Best Paired With
BLD22010 DC 18–60V ≤10A continuous Speed (Hall), analog/PWM input 12V/24V/36V/48V BLDC planetary, 15–400W
BLD6010 DC 80–220V ≤30A continuous Speed (Hall), RS485, analog 48V/72V BLDC planetary, 400W–3kW
BLDB6010 DC 18–60V ≤10A continuous FOC, torque/speed/position 3-mode BLDC servo planetary with encoder

See full controller range for specifications and wiring diagrams.

Applications

Where BLDC Planetary Gear Motors Are Used.

01
Conveyor & Sortation Systems

Compact conveyor modules, belt-driven sortation, roller drives — where machine layout is tight and output torque still needs to be serious. 42–57 mm frames, 48V, 2-stage planetary.

02
Packaging & Labelling Machinery

Form-fill-seal drives, carton erectors, labelling applicators, shrink-wrap indexing — precision positioning with low backlash, high cycle rate, and small footprint.

03
Textile & Printing Equipment

Winding tension control, fabric feed rolls, ink roller drives — constant-torque or constant-speed control via the matched BLD controller, smooth output from planetary gearing.

04
Medical & Lab Automation

Infusion pumps, syringe drivers, dialysis pumps, sample handlers, dental chair actuators — sealed-for-life, low acoustic noise, IP54/IP65, NSF H1 food-grade grease available.

05
AGV & Warehouse Automation

Internal-logistics AGV traction, lift drives, mobile robot steering — battery-powered DC drive, high reduction in a low-profile coaxial package, 86–115 mm frames.

06
HVAC & Industrial Actuators

Motorised valve actuators, damper drives, sluice gate operators — the worm-like high holding torque of 3-stage planetary (125:1–500:1) but with higher efficiency and no self-locking backlash issues.

Catalog Download

Request The Full Catalog PDF.

The BLDC planetary gear motor catalog includes frame drawings with mounting dimensions, dyno-tested torque/speed curves per SKU, wiring diagrams for each controller pairing, and volume pricing tiers.

Request Catalog

Factory Capability.

  • In-house gear cutting — hobbing, shaving, and grinding (Q12 precision) on the same line
  • 20CrMnTi heat treatment QA — surface HRC 58–62 verified on every batch
  • Dyno-tested at end-of-line — every unit bench-tested with dyno report on torque, speed, current, temperature rise
  • Audit-welcomed — SGS / BV / Intertek / TUV third-party audits supported; ISO 9001 + CE + RoHS on file
  • 20 minutes from Ningbo-Zhoushan port — FOB Ningbo / CIF / DAP to all major destinations
FAQ

Frequently Asked Questions — BLDC Planetary Gear Motor.

How much does a BLDC planetary gear motor cost?
Prices range from $35–$90 for small 22–28 mm frames (15–50W) to $250–$600 for 115 mm high-power frames (1–3kW), at FOB Ningbo MOQ pricing. Adding a matched controller adds $30–$100. Volume discounts of 15–25% are available at 1000+ units. See the pricing table above for full breakdowns, or read our BLDC motor price guide for a deeper cost analysis.
What is a BLDC planetary gear motor?
A brushless DC motor (electronically commutated, no carbon brushes, 20,000+ hour service life) with a planetary gearbox (sun + planet + ring gear, load shared across multiple meshes). The combination delivers high torque density in a compact coaxial envelope with low backlash — the default choice for industrial automation, packaging, conveyor, and precision positioning applications.
What gear ratios are available?
1-stage: 3:1, 4:1, 5:1, 6:1, 8:1, 10:1 (backlash 5–10 arc-min, ~94% eff). 2-stage: 12:1 to 100:1 across 10 ratios (10–20 arc-min, ~88%). 3-stage: 125:1 to 500:1 across 7 ratios (15–30 arc-min, ~82%). Custom intermediate ratios on existing gear blanks at 50-unit MOQ.
What output torque can I get?
22 mm frame: 0.5–8 N·m. 28 mm: 1.5–25 N·m. 42 mm: 5–80 N·m. 57 mm: 12–180 N·m. 86 mm: 40–280 N·m. 115 mm: 80–300 N·m. Torque depends on gear ratio — higher ratio = higher output torque, lower output speed. Exact figures dyno-tested per SKU.
Do you supply matched motor + controller kits?
Yes — matched kits are the standard sales unit. 24V/36V: BLD22010 (18–60V/10A). 48V/72V: BLD6010 (80–220V/30A). Servo: BLDB6010 with FOC + encoder. Pre-paired, dyno-tested, firmware parameterised — no field-tuning. See controller range.
Can I get sub-5-arc-min backlash for precision motion?
Yes — Q12 ground gears (DIN 6) drop single-stage backlash below 5 arc-min, two-stage below 10 arc-min. Specify Q12 + IP65 sealing for long-term backlash stability. Applications: robotics, medical positioning, semiconductor handling.
What is the MOQ and lead time?
Sample 1 unit, 7–10 days. Production 50–100 units, 2–3 weeks. Custom ratio 50 units, 3–4 weeks. Custom modifications 100–300 units, 6–8 weeks. ODM (new tooling) 200–500 units, 12–20 weeks. See custom BLDC motor and ODM BLDC motor for modification and clean-sheet project flows.
What payment terms do you offer?
T/T 30% deposit + 70% balance against B/L copy. L/C at sight on orders >USD 30k. PayPal on samples <USD 1k. Tooling milestone payments for ODM. Shipping: EXW Cixi / FOB Ningbo / CIF / DAP / DDP.

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