Direct Gear Motor Factory — Cixi, Ningbo WhatsApp: +86 18268661068
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Direct Gear Motor Factory

Gear Motor Manufacturer — Direct Factory For Planetary, Worm, Helical & Right-Angle Gear Motors.

Shenghe is the gear motor factory, not a sourcing front. The same Cixi (Ningbo) site that runs the BLDC motor production line also runs gearbox CNC machining for housings, output shafts, planet carriers, sun gears, ring gears, worm shafts and worm wheels — gear hobbing on the gear blanks, heat-treatment QA on the case-hardened components, gearbox + motor final assembly with grease packing under controlled conditions, and end-of-line dynamometer testing for output torque, ratio verification and noise spectrum. Procurement teams dealing with gear motors usually find the same supplier list shows up for "BLDC motor" and "gear motor" — that's because the gearbox is built on top of the motor, and the integrated factory is the only one that controls the full pairing from winding to gear-mesh to dyno bench. This page covers the gear-motor-specific procurement language: gearbox families, gear material and AGMA grade, lubrication and sealing, output torque math, container loading at gear-motor density, and the OEM / ODM scope that goes beyond logo-on-housing.

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Gearbox CNC + motor winding on one site — no subcontracted gear shop 20CrMnTi HRC 58–62, AGMA Q9–Q11 — case-hardened gears as standard Sealed-for-life lubrication, IP54 standard — IP65 / IP67 on request Dyno-tested output torque + ratio per unit — test record on the unit
Ningbo Shenghe Motor factory entrance — direct gear motor manufacturer in Cixi, Ningbo
Gear Motor Manufacturer, Not Trader

The Gear Mesh Is Cut Inside The Same Building As The Motor Winding.

Most "gear motor supplier" listings on B2B marketplaces are trading companies that source the bare BLDC motor from one factory and the gearbox from another, then bolt them together at a third — and quote you the whole assembly with a margin on top. Shenghe runs the entire pairing in one factory: gearbox housings and output shafts CNC-machined here, gear blanks hobbed and shaved here, motors wound and assembled here, gearbox + motor final assembly with grease packing here, and the end-of-line dynamometer test that verifies output torque and ratio also runs here. When the buyer asks "what's the actual output torque under continuous duty?" — the engineer answering has the dyno data on the desk, not a chain of forwarded emails.

  • No trading-company markup between gearbox + motor cost line and your quote
  • Engineering response in English on ratio, torque, backlash, IP rating, mounting interface
  • OEM and ODM scope locked in writing — sample to volume in one factory
  • Audit-ready production: ISO 9001 procedures, individual end-of-line dyno test records on every gear motor, gearbox teardown for buyer inspection on request
Manufacturer vs Trader vs Marketplace

The Gear-Motor-Specific Differentiator.

Sourcing a gear motor is harder than sourcing a bare motor — the assembly involves two manufacturing disciplines (motor winding + gearbox machining + heat treatment + grease packing) that most factories handle in one but not both. The table below is the honest difference on the dimensions that matter when the gear motor needs to ship on spec, run on duty, and stay quiet for 20,000+ hours.

DimensionDirect Factory (Shenghe)Trading CompanyOnline Marketplace
Engineering response time Same-day to 24h, from the engineer who runs both motor and gearbox lines 2–5 days, forwarded to motor factory + gearbox factory + back Variable — generic agent reply, no engineering depth on ratio / torque math
Gearbox + motor pairing Single-source — winding, gear cut, gearbox housing, dyno test all in-house Two factories assembled by trader — pairing tolerance not always controlled Whatever the listing has — no engineering check on the pairing's actual output torque
OEM / ODM customisation depth Custom ratio, output shaft, housing, IP rating, encoder, motor winding, controller firmware Limited to what the underlying gearbox supplier supports — usually no winding change Branding only — usually no electrical or gearbox change
Pricing transparency Direct factory price — no resale markup on gearbox or motor Markup of 10–25% over factory cost (often double-margined: motor + gearbox) Marketplace fees + seller markup; price not always negotiable
Sample lead time 7–10 days from order, MOQ 1 unit on stock SKU 10–20 days (factory + trader handling, plus pairing assembly) Stock items only — non-stock items go via factory anyway
Inspection access Buyer welcome on site — gearbox teardown demo on request; SGS / BV / Intertek supported Trader may block direct factory access; gearbox teardown rarely possible No inspection — listing-only relationship
After-sales coverage Dyno test record per unit; engineering 8D report inside 7 days; replacement seal / grease in stock Escalation through trader; root cause hard to assign between motor and gearbox supplier Marketplace dispute system; outcome rarely engineering-grade
IP protection (custom designs) NDA supported; ODM IP belongs to customer; tooling locked under contract NDA via trader — chain-of-custody less clear, especially across two factories Generally no IP protection mechanism

Already comparing to a trading-company gear-motor quote? Send the line items and we will match line-by-line on ratio, torque, AGMA grade, IP rating and price. Send the comparison →

Gearbox Families In-House

Four Gearbox Families — Pick The One That Matches Your Load.

The four gearbox types Shenghe machines and assembles in-house, with the typical use case for each. Pick the family first against your application's torque, speed, backlash and self-locking requirement; the matched motor side (voltage, power, encoder option) gets dimensioned at quote stage.

Gearbox familyReduction ratio rangeEfficiencyBacklashSelf-lockingBest for
Planetary Single 3:1–10:1, 2-stage to 100:1, 3-stage to 500:1 ~95% per stage 10–20 arc-min single-stage standard, <5 arc-min ground-gear precision No (back-drivable) Robotics, AGV traction, precision positioning, high-torque-density compact envelope
Worm Single-stage 5:1–60:1 (typical), up to 100:1 on selected frames 70–85% (lower at high ratio) Higher than planetary (sliding contact) Yes (lead angle <5°) — load can't back-drive motor Lifts, automatic doors, barriers, conveyor stops, anywhere the load must hold position de-energised
Helical / Spur (HG-series) Single-stage 3:1–10:1, multi-stage to 1000:1 ~90% per stage (helical), ~95% spur Moderate; helical runs quieter than spur No Heavy industrial conveyor, packaging machinery, continuous-duty drives where smooth quiet operation matters
Right-angle (bevel-helical hybrid) 3:1–200:1 with 90° output ~85–90% Moderate Depends on stage mix Conveyor side-drives, packaging stations, narrow machine layouts where 90° output is required by envelope

All four families share the same factory, the same QA standards, and the same dyno-bench end-of-line test. Browse per-SKU detail at Gear Motor Hub →, or by family at Planetary Gear Motor, Worm Gear Motor, Right-Angle Gear Motor and High-Torque Gear Motor.

6-Step Sourcing Workflow

From Sizing Brief To Container Loading In Ningbo.

The standard sourcing path Shenghe runs with new gear-motor procurement teams. Each step has a defined deliverable and a defined response window so the buyer-side procurement, engineering and QA teams know what to expect at every stage.

  1. Step 1 — Send the gear-motor sizing brief. Five-number brief: bus voltage, required output torque (Nm), required output speed (RPM at the gearbox shaft), gearbox style preference (or "recommend best fit"), application + target quantity. Add IP rating, mounting interface, encoder requirement and backlash spec for precision-positioning applications. The more detail at this stage, the tighter the engineering shortlist comes back.
  2. Step 2 — Receive engineering shortlist with ratio + torque + efficiency math (1 working day). 2–3 matched gear motor SKUs with predicted output torque (motor continuous torque × ratio × gearbox efficiency: 95% planetary, 85% helical, 70–85% worm), predicted output speed, AGMA quality grade, backlash spec, IP rating, lead time, MOQ, FOB Ningbo and CIF target port unit price. Each row links to the published spec sheet for procurement-side validation.
  3. Step 3 — Sample order + dynamometer bench test (7–10 days lead). Sample MOQ 1 unit on stock SKUs. Samples ship by DHL / FedEx / UPS for buyer-side bench testing — actual output torque under rated and peak load, no-load speed verifying ratio, thermal rise, audible noise, planetary backlash measurement. Shenghe ships the matching unit's factory dyno-bench test record so both sides look at the same numbers; the two data sets should match within ±5%.
  4. Step 4 — PO confirmation + production schedule. Procurement issues PO with quantity, ship date, Incoterm, payment term and any OEM artwork (logo on gearbox housing, motor body branding, packaging). Factory confirms the production-line slot in writing — gearbox CNC, gear hobbing, motor winding, assembly and dyno bench all booked into the same production traveler. T/T 30% deposit triggers gear-blank machining and motor stator winding on parallel paths.
  5. Step 5 — Pre-shipment inspection (in person or video). Two days before shipment, the buyer or third-party inspector (SGS, BV, Intertek, TUV) inspects the production batch — random unit teardown for gear-mesh and bearing inspection, oil-seal lip integrity, dyno-bench spot test on AQL sample, grease quantity and seal condition, packaging and labelling. Live WhatsApp / WeChat video walk-through for overseas buyers.
  6. Step 6 — Sea or air freight from Ningbo port. Ningbo Beilun is a top-three container port worldwide. FOB Ningbo, CIF / CFR or DDP supported. Air freight from NGB or PVG via DHL / FedEx / UPS / TNT for urgent orders — typical 3–5 day door-to-door. Container loading runs 60–70% of bare-motor density given gearbox housing volume; confirm exact load by SKU at quote stage.
Production Capability — Gear Motor Specific

Six In-House Stations From Gear Blank To Dyno Test.

The reason Shenghe gear motor samples ship in 7–10 days and the dyno-test record matches the buyer's bench data within ±5% is that none of the six core gear-motor stations are subcontracted. Gearbox CNC, gear hobbing, stator winding, gearbox + motor assembly with grease pack, controller PCB and dynamometer bench are all under the same roof in Cixi.

Row of YT40 CNC lathes for gearbox housing and output shaft machining

1. Gearbox CNC Machining

YT40 and Xinchuan XC36 CNC lathe lines turn gearbox housings, output shafts, planet carriers, sun gears, ring gears and worm shafts to drawing tolerance. Operator-supervised, with first-article inspection on every batch. Custom output shaft length, custom keyway, custom flange dimensions, custom hollow-shaft diameter all programmed at this station — same lathe, same program from prototype to production.

2. Gear Hobbing & Shaving

Gear hobbing on the gear blanks for planetary, helical and spur tooth profiles; gear shaving on stocked tooling for AGMA Q9–Q11 standard. Worm shafts ground after heat treatment; worm wheels (tin-bronze, ZCuSn10P1) hobbed against the matched worm. Q12 (DIN 6) ground-gear precision on request for low-noise or precision-positioning variants. Heat treatment (carburising + quenching to HRC 58–62) handled by qualified local partner under Shenghe QA — case-depth and surface-hardness verified on every batch sample.

Trays of machined motor housings ready for stator winding — paired with gearbox stations

3. Stator Winding (Motor Side)

In-house stator winding line on the matched motor housing — copper wire diameter, turn count and slot fill verified against the BOM at each batch start. Hall sensor placement validated before potting. The motor side runs in parallel with gearbox CNC on the same production traveler so motor and gearbox land at the assembly station together.

Gear motor assembly line with grease-pack and dyno test stations

4. Gearbox + Motor Assembly + Grease Pack

Final assembly stations integrate gear train, planet carriers, output shaft, bearings, oil seals and the matched motor onto the gearbox flange. Grease packing under controlled conditions — quantity-metered grease shot per gearbox volume, sealing torque on the housing bolts, oil-seal lip orientation verified. Lubricant: lithium-complex grease NLGI grade 2 for planetary / helical, gear oil ISO VG 220 with EP additive for worm; food-grade NSF H1 on request. Sealed for life from the factory.

In-house BLDC motor controller PCBs paired with gear motor builds

5. Controller PCB (Matched Drive)

BLD22010, BLD6010 and BLDB6010 servo controllers built on the same site for matched gear-motor + drive sets. For applications needing closed-loop output speed (encoder feedback through the motor onto the gearbox output), controller firmware is parameterised against the gear ratio at end-of-line — set-points, speed limits and current limits scaled for the gearbox output, not just the motor side.

Dynamometer test bench measuring output torque and ratio of gear motors

6. Dynamometer Bench + End-Of-Line Test

Every gear motor receives an end-of-line dynamometer test before packing — output rated torque, output peak torque, no-load output speed (verifying the actual ratio against the spec), no-load motor-side current, temperature rise across rated-load duty cycle, audible noise level, and gearbox backlash measurement on planetary variants. The dyno test record is shipped with the unit and the lot, and is referenced if a buyer-side performance issue appears later. Endurance bench runs 100% load duty cycle for sample qualification.

See the full factory walk-through with workshop video →

Gear Material & AGMA Quality

Why The Gear Mesh Lasts 20,000+ Hours.

Gear motor service life is dominated by the gear mesh and the bearings — winding burn-out is rare, gear-mesh wear and oil-seal leak are the failure modes that show up in the field. Material grade, heat treatment, AGMA quality and lubrication are the four levers that keep the mesh quiet and lubricated for 20,000+ hours.

ComponentMaterialHeat treatmentSurface hardnessAGMA grade (standard)
Planetary sun gear, planet gear, ring gear 20CrMnTi case-hardening steel Carburised + quenched + tempered HRC 58–62 surface, HRC 32–40 core Q9–Q11
Helical / spur gear (HG-series) 20CrMnTi or 40Cr Carburised + quenched (20CrMnTi) or Q&T (40Cr) HRC 55–62 (case-hard), HRC 28–35 (Q&T) Q9–Q11
Worm shaft 40Cr quenched-tempered steel, ground Through-hardened + ground after heat treat HRC 45–50 + ground surface Q9
Worm wheel ZCuSn10P1 tin-bronze (sand cast or centrifugal cast) Stress-relieved HB 80–110 (sliding-friction match to worm) Q9 (matched against worm)
Output shaft 45 carbon steel or 40Cr Q&T Q&T or normalised HB 220–280 (Q&T) —
Gearbox housing Aluminium alloy ADC12 (cast) or 45 steel (machined) Stress-relieved cast / Q&T machined — —
Bearings (output shaft) GCr15 / SUJ2 bearing steel — sealed ball or tapered roller per loading Heat-treated to bearing standard HRC 60–63 Manufacturer P5/P6 standard

For low-noise (<55 dBA at 1m) or precision-positioning (<5 arc-min backlash) applications, AGMA Q12 (DIN 6) ground gears are quoted as an option — adds the tooling cost for the grinding pass but extends mesh life and drops noise floor by 5–8 dBA. Confirm the noise spec or backlash target at the sizing brief stage.

Lubrication, Sealing & IP Rating

Sealed-For-Life — But With Specs On Paper.

"Sealed for life" is a marketing line on most gear motor datasheets. The grade, viscosity, additive package and seal type that make it actually sealed for life are below — published specs, not aspirations.

Standard Lubricant — Planetary & Helical

Lithium-complex grease NLGI grade 2, base oil viscosity ~220 cSt at 40°C, EP additive package for high-load gear-mesh duty. Operating temperature range −20°C to +120°C continuous, +140°C peak. Equivalent commercial grades: Mobil SHC 460, Klüber Polylub GLY 801, SKF LGEP 2. Quantity-metered fill at the assembly station — too much grease drives churning loss and heat, too little drives wear.

Standard Lubricant — Worm

Gear oil ISO VG 220 with extreme-pressure (EP) additive, for the sliding-contact regime between worm and worm wheel. Heavier viscosity than grease helps reduce wear on the bronze worm wheel under high-ratio loading. Operating temperature −20°C to +100°C continuous; oil bath sealed at the housing parting line. Synthetic gear oil (PAO base) on request for cold-start or high-temperature duty.

Food-Grade NSF H1 (On Request)

Food-grade lubricant (NSF H1 registered) available on request for food-processing, beverage, dairy and pharmaceutical applications. Base lubricant is white-mineral-oil or PAO with food-safe additive package. Confirm at quote stage so we ship the right grease + oil combination on the assembly traveler. Specific NSF H1 brand confirmed against your audit list (procurement teams in EU and North America usually specify Klüber, Lubriplate or Petro-Canada).

Standard Sealing — IP54

Double-lip oil seal on the output shaft (NBR rubber lip + spring + dust-lip), housing O-ring at the parting line, sealed bearings on the output shaft. IP54 standard from the factory — protected against limited dust ingress and water spray from any direction. Standard motor-side sealing matches IP54. Adequate for indoor industrial duty, AGV warehouse, conveyor, packaging.

Upgrade — IP65 / IP67

IP65 with confirmed gasket upgrade (FKM seal lip for chemical resistance, double O-ring at the parting line, IP65-rated cable gland on the motor side) — for outdoor industrial duty, washdown, dust-heavy environment. IP67 for short-term submersion, marine or food-washdown — needs confirmed seal-lip material against your washdown chemistry, breather valve omitted, output shaft sealed against splash. Quoted per project.

Field Maintenance Interval

Sealed-for-life on the standard range — no field re-lubrication needed for the design life of the gear motor (20,000+ hours continuous duty) at 40°C ambient. For high-duty cycles running 24/7 at >50°C ambient or with shock loading, lubricant inspection every 5,000–8,000 operating hours is recommended. Replacement seal kits and grease packs stocked for any frame on request — most are 5-min replacement on the field unit.

Certifications Wall

Audit-Ready Documentation On File.

The certifications industrial procurement teams ask for at quote stage. Test reports, declaration-of-conformity documents and material certificates are released under NDA for procurement audit.

ISO 9001 — Quality Management

The factory's quality management system is ISO 9001 certified. Procedures cover supplier qualification, in-process inspection (gear runout, oil seal integrity, dyno bench QA), end-of-line test record per unit, non-conformance handling, calibration on the dyno and gauge equipment, and traceability per production batch.

CE Marking — EMC + LVD

Export-spec gear motors and matched controllers carry CE marking covering the EMC directive (electromagnetic compatibility on the motor + drive) and the LVD directive (low-voltage / safety). EMC test reports and declaration-of-conformity documents released on NDA.

RoHS — Restricted Substances

RoHS compliance covers lead, mercury, cadmium, hexavalent chromium, PBB and PBDE restrictions. Material declarations from gear-blank steel, copper wire, magnet, bearing, lubricant and cable suppliers are kept on file and refreshed annually.

REACH — EU Chemical Compliance

REACH compliance documentation for EU distribution available on request. SVHC declarations refreshed against the current ECHA candidate list — gear-motor-specific SVHC items focus on the lubricant, sealant and bronze worm wheel content. Confirm REACH need at quote stage.

Food-Grade Lubricant

NSF H1 registered lubricant available on request for food-processing and pharmaceutical gear-motor applications. NSF certificate copy from the lubricant supplier kept on file with the production traveler. Confirm at quote stage so we ship the right grease + oil combination.

Per-Unit Dyno Test Record

Every gear motor leaves the factory with an individual dyno-bench test record — output rated torque, output peak torque, no-load output speed (ratio verification), no-load motor-side current, temperature rise, audible noise, planetary backlash where applicable. Per-shipment material certificates available on request — gear blank steel grade, lubricant batch, bearing source.

OEM & ODM Scope — Gear Motor

From Logo Etching To Custom Gear Ratio.

Two engagement levels for gear-motor procurement teams that need more than a stock SKU. OEM is the customer's brand on Shenghe's design; ODM is Shenghe building from the customer's gear-train and motor specification.

ScopeOEM (your brand on our gear motor)ODM (designed from your spec)
Branding Customer logo on gearbox housing (laser etch or printed label) and motor body, customer SKU on carton, custom housing colour within paint range Same as OEM, plus customer naming convention on output shaft tag and rating plate
Gear ratio change Stock ratios only (3/4/5/7/10/15/20/25/30/50/70/100/150/200:1) Custom ratio combination on existing tooling, or new tooth-count on new tooling — any ratio from 3:1 to 1000:1
Output shaft change None — uses standard output shaft Custom diameter, length, keyway, splined, D-shaft, hollow-shaft, flange-mount
Housing & mounting change None — uses standard housing Custom housing dimensions, custom flange pattern, custom mounting interface, custom IP rating up to IP67
Motor electrical change None — uses standard winding Custom voltage, custom torque-speed curve, custom Hall layout, custom encoder integration
Sample lead time 2–3 weeks from artwork freeze 4–8 weeks from spec freeze (includes prototype tooling, gear hobbing tooling)
Tooling fee Tooling fee applies only when a fully custom housing colour or custom carton die-cut is required Quoted per project — typical NRE for new gear hobbing tooling, new housing mould, shaft fixturing; refunded against volume order over agreed quantity
Production MOQ 50–100 units 200–500 units (depending on tooling complexity)
IP protection NDA on artwork and brand assets NDA on full design package; ODM gear-train and motor IP belongs to customer; Shenghe does not resell ODM gear motor designs to third parties

Send the OEM artwork or ODM specification to the inline RFQ — engineering returns a feasibility note inside 5 working days. NDAs supported. See the full ODM service workflow at ODM BLDC Motor →; the gear-motor ODM follows the same 6-step path with gearbox-specific tooling steps inserted between concept and prototype.

Trust Signals

Why Procurement Teams Stay Past The First Gear-Motor Order.

The numbers and capabilities procurement teams cite when justifying repeat orders.

50-Person Direct Manufacturer

Engineering, gearbox CNC, gear hobbing, motor winding, gearbox + motor assembly, controller PCB, dyno bench QA and English-first export desk — all in one factory in Cixi, Ningbo. Not a virtual office, not a trading-company front, not a motor supplier bolting on a third-party gearbox.

10+ Years Manufacturing Gear Motors

Over a decade of focused gear motor production for industrial OEM customers. Planetary, worm, helical and right-angle gear families run continuously — not a try-and-see catalog, the four families that actually cover 90% of industrial duty.

Export Markets — 30+ Countries

Active export shipments to 30+ countries across North America, Europe, Latin America, the Middle East, India, Southeast Asia and Australia from Ningbo port. Gear motor HS Code 8501 (motor with gearbox) clears under standard motor classification — straightforward import for most destinations. English-first export desk; German and Spanish on request.

Repeat-Buyer Track Record

Repeat orders from industrial OEM customers are the cleanest signal that the first order shipped on spec, on time, with the dyno-test data matching the buyer's bench. Reference customer list available under NDA on request — no anonymous claims, no invented logos.

One Working Day Quote SLA

The English-first export desk responds inside one working day on standard SKU inquiries; engineering shortlist with ratio-torque-efficiency math returns inside 24 hours; ODM feasibility note inside 5 working days. WhatsApp + email + WeChat all monitored.

Audit-Ready Documentation

ISO 9001 procedures, CE / RoHS test reports, individual end-of-line dyno test records on every gear motor, material certificates including gear-blank steel grade and lubricant batch, factory open for buyer audit and third-party inspection (SGS, BV, Intertek, TUV) including gearbox teardown demo on request.

Volume Capacity & Container Loading

Production Capacity And Shipping Math For Gear Motors.

Gear motor container loading is lower than bare-motor loading because of gearbox housing volume and the extra packaging needed to protect the output shaft. The numbers below help procurement teams size the first PO and predict freight cost.

Gear motor framePower point + ratio bandVoltage classMonthly capacity20GP container40HQ container
57BL planetary 50W–250W, 3:1–100:1 24V / 48V 1,500–2,500 / month ~2,500 units ~5,500 units
80BL planetary / worm 200W–500W, 5:1–200:1 24V / 36V / 48V 1,200–2,000 / month ~1,500 units ~3,500 units
90BL planetary / right-angle 500W–1000W, 5:1–200:1 48V / 72V 1,000–1,800 / month ~900 units ~2,000 units
110BL planetary / worm 1000W–1500W, 10:1–500:1 48V / 72V / 110V 800–1,500 / month ~500 units ~1,200 units
130BL right-angle / heavy worm 1500W–3000W, 10:1–1000:1 72V / 110V / 220V 500–1,000 / month ~300 units ~700 units
HG-series helical-spur Multi-stage, 100:1–1000:1 48V–220V 500–1,000 / month ~400 units ~900 units

Monthly capacity figures above are typical sustained throughput; scalable on advance booking. Gear motor container loading runs 60–70% of the bare-motor count given gearbox housing volume — confirm exact load by SKU at quote stage. Volume buyers and distributors get tier pricing per BLDC Motor Wholesale →; gear motor pricing follows the same wholesale tier structure.

Download The Gear Motor Capability Brochure (PDF) Factory tour photos, ISO 9001 / CE / RoHS certificate copies, full gearbox family overview (planetary / worm / helical / right-angle), gear material spec, AGMA quality grades, lubrication and sealing standards, OEM / ODM scope, MOQ table, lead-time matrix, payment terms and Incoterm coverage, container-loading reference. Sent to your email by the export desk.
Download PDF
Inline Gear-Motor RFQ

Send The Sizing Brief — Quote In 24 Hours.

Tell the export desk what you are sourcing: bus voltage, required output torque (Nm), required output speed (RPM at the gearbox shaft), gearbox style preference (planetary / worm / helical / right-angle, or "recommend"), application, target quantity. Add IP rating need, mounting interface, encoder requirement and backlash spec for precision-positioning applications. Engineering returns a matched build (motor SKU + gearbox SKU + ratio + predicted output torque + predicted output speed + lead time + MOQ + FOB and CIF unit price) inside one working day.

  • Direct factory in Cixi, Ningbo — gearbox CNC + motor winding + assembly + dyno bench on one site
  • 20CrMnTi case-hardened gears (HRC 58–62), AGMA Q9–Q11 standard, lithium-complex grease NLGI grade 2
  • OEM (your brand) and ODM (custom ratio / shaft / housing / IP / motor electrical) supported under NDA
  • FOB / CIF / DDP from Ningbo port; T/T 30/70 or L/C at sight ≥ USD 30k
  • Per-unit dyno test record on every gear motor — output torque, ratio, no-load current, noise, planetary backlash
Request Quote

Direct Gear-Motor Sourcing Inquiry.

Voltage, output torque (Nm), output speed (RPM), gearbox style preference, application, target quantity — anything you can share helps the export desk reply with a tighter shortlist. IP rating, mounting interface, encoder requirement, backlash spec, food-grade lubricant need also welcome at brief stage.

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Gear Motor Manufacturer FAQ

What Procurement Teams Ask Before The First Gear-Motor PO.

The 12 questions procurement teams ask most often before placing the first gear-motor order. For sourcing-specific questions not covered here, send the inline RFQ — the export desk replies inside one working day.

Are you a manufacturer or a trading company?

Direct manufacturer. Gearbox CNC, gear hobbing, motor winding, gearbox + motor assembly, grease pack, controller PCB and dyno bench all on the same site in Cixi, Ningbo. Procurement teams who visit can audit any station and request a gearbox teardown on the bench — no trading-company markup between the price you see and the line that built the gear motor.

Which gearbox families do you make in-house?

Four families: planetary (3:1–500:1, low backlash), worm (5:1–60:1 single-stage, self-locking), helical / spur HG-series (3:1–1000:1, high efficiency), right-angle bevel-helical hybrid (90° output). All housings, output shafts, gears and worm wheels CNC-machined or hobbed in-house — not subcontracted.

What gear material and AGMA quality?

20CrMnTi case-hardened steel HRC 58–62 (planetary, helical, spur), 40Cr ground worm shaft + tin-bronze ZCuSn10P1 worm wheel. AGMA Q9–Q11 standard; Q12 (DIN 6) ground gears on request for low-noise / precision-positioning. Backlash 10–20 arc-min single-stage planetary standard, <5 arc-min ground-gear precision available.

What lubrication and IP rating do you ship?

Lithium-complex grease NLGI grade 2 (planetary / helical), gear oil ISO VG 220 EP additive (worm), sealed-for-life. IP54 standard (double-lip oil seal + housing O-ring). IP65 with confirmed gasket on request, IP67 quoted per project. Food-grade NSF H1 lubricant on request.

What is the smallest order you accept?

1 unit for sample on stock SKUs. 100 units production for stock, 50–100 OEM-branded, 200–500 ODM with new tooling. Wholesale tier pricing kicks in at 100 / 500 / 1,000 / 5,000+ units — see /bldc-motor-wholesale/ for the volume tier structure.

Lead time for custom ratio or output shaft?

Stock ratio: 2–3w production / 7–10d sample. Custom ratio on existing gear blanks: +1–2w. Custom output shaft (length, keyway, flange, hollow-shaft): +2–3w. New gearbox tooling: +4–8w for prototype, FAI, tooling.

Do you do OEM and ODM on gear motors?

Yes. OEM: customer brand on housing and motor body, custom packaging, custom paint within range. ODM: custom ratio, custom output shaft, custom housing, custom IP rating, custom motor winding, custom encoder integration. NDAs supported on first inquiry. ODM tooling refunded against volume over agreed quantity.

How do you verify output torque and ratio?

Every gear motor receives an end-of-line dynamometer test — output rated torque, peak torque, no-load output speed (verifying ratio), no-load motor-side current, temperature rise, audible noise, planetary backlash where applicable. Test record sticker on the unit; lot record on file.

What payment terms — T/T, L/C, Incoterms?

T/T 30% deposit + 70% balance against B/L copy. L/C at sight on orders ≥ USD 30k. PayPal for samples < USD 1k. Incoterms: EXW Cixi, FOB Ningbo, CIF / CFR / DDP supported. Volume tier discount applies — see /bldc-motor-wholesale/.

How do you handle quality complaints on gear motors?

Per-unit dyno test record. Failed unit returned with the test sticker triggers root-cause inside 7 working days; replacement seal / grease in stock; written 8D report on systemic batch issues. Common modes: oil-seal leak (5-min field replacement), gear noise from tooling drift, planet-carrier bearing wear from over-speed, worm-wheel pitting from thermal overload.

Can I visit the gear motor factory?

Yes — open for buyer visits and live video walk-through. Ningbo Lishe (NGB) ~1h, Shanghai Pudong (PVG) ~3h. Gearbox teardown on the bench available for visiting buyers or via live WhatsApp / WeChat video on request.

Can you ship gear motors to my country?

Yes — Ningbo Beilun is a top-three container port, direct sailings worldwide. HS Code 8501 (motor with gearbox) clears under standard motor classification. Container loading runs 60–70% of bare-motor density given gearbox housing volume.

Related Hubs & Top Pages.

The four pages most commonly visited together with the gear motor manufacturer page.

Hub

Gear Motor (Hub) — Full Catalog

Planetary / worm / helical / right-angle catalog with matched controller pairings, ratio 3:1 to 1000:1, output torque 0.1 to 300 Nm. Sourcing

BLDC Motor Manufacturer — Direct Factory

Bare-motor sourcing page — manufacturer-vs-trader comparison, 6-step workflow, certifications wall, MOQ, OEM / ODM scope. Hub

BLDC Motor (Hub) — Full Catalog

Voltage × power × type matrix across 37 BLDC motor SKUs — pair with any gearbox family above. Factory

Factory Capability + Walk-Through

Full workshop tour with CNC, winding, assembly, PCB and test-bench photos and 30s video — see where your gear motor gets built.

Sourcing direct from China? China BLDC Motor Supplier — FOB Ningbo →  ·  Need branded gear motors? OEM Branded Manufacturing →  ·  Need a tweak to a standard gear motor (custom output shaft, ratio, IP)? Custom BLDC Motor →  ·  Engineering-led custom design? ODM Custom Design Service →  ·  Volume-buyer or distributor? BLDC Motor Wholesale & Distributor Program →  ·  Motor Controller Hub  ·  About Shenghe  ·  Contact

Gear motor manufacturer — quote in 24 hours Get Quote Capability PDF WhatsApp