ZhongYi Gear Manufacturer (a member of ZhongYi Machinery)

China Precision Gear Manufacturer · Direct OEM Factory

China Custom Gear & Rack Manufacturer for Industrial Machinery

As an ISO 9001 certified gear factory in Zhejiang, China, ZhongYi Gear Manufacturer (a member of ZhongYi Machinery) manufactures high-precision spur gears, gear racks, planetary gears, worm gears, bevel gears, shafts, and gearbox components directly from CAD drawings or samples.

20+ years
gear manufacturing experience
500+
gear categories and variants
500,000+
annual gear production capacity
2,800+ m2
production base area
Machined gear components manufactured by ZhongYi gear factory

Founded

2003

System

ISO9001 quality system certification

RFQ

Drawings and samples accepted

China Direct Gear Factory

Drawing-Based OEM Production

DIN 4-7 Quality & CMM Inspection

Direct Factory Export to Worldwide

Core product categories

Gear products for machinery transmission and OEM replacement.

These product categories help buyers review gear types, applications, materials, and custom manufacturing paths before sending an RFQ.

China Spur Gears Manufacturer

Spur Gears

Custom steel, stainless steel, ground, hubless, and plastic spur gears for parallel-shaft transmission.

  • External and internal mounting features by drawing
  • Metric module or diametral pitch data reviewed before quotation
  • Material and heat-treatment route selected for the duty
View category details

China Helical Gears Factory

Helical Gears

Custom helical gears and pinions for smoother parallel-shaft transmission and controlled meshing.

  • Right-hand and left-hand helix details confirmed by drawing
  • Normal or transverse gear data clarified before production
  • Axial-load and bearing arrangement considered during review
View category details

China Internal Gears Factory

Internal Ring Gears

Custom internal gears and ring gears for compact transmission, reduction, and planetary-type assemblies.

  • Internal tooth geometry and mating pinion reviewed together
  • Ring blank, mounting holes, and datum surfaces made by drawing
  • Material and heat treatment assessed against section thickness
View category details

China Gear Rack Manufacturer

Gear Racks and Pinions

Custom straight, helical, hardened, round, and corrosion-resistant rack-and-pinion components for linear motion.

  • Straight and helical tooth forms reviewed by drawing
  • Mounting holes, machined ends, joints, and datum faces configurable
  • Matched pinion and backlash conditions considered together
View category details

China CP Gear Rack Factory

Circular Pitch Rack and Pinion

Custom CP racks and pinions for applications that use convenient whole-millimetre travel per pinion revolution.

  • Circular pitch and movement-per-revolution data confirmed
  • Matched CP pinion and rack geometry reviewed together
  • Straight, tapered, hardened, or special mounting forms by drawing
View category details

China Miter Gears Manufacturer

Miter Gears

Custom 1:1 miter gear pairs for changing drive direction between intersecting shafts.

  • One-to-one ratio and shaft angle confirmed by drawing
  • Straight, spiral, or zerol tooth forms reviewed
  • Pair matching, contact pattern, and mounting distance considered
View category details

China Straight Bevel Gears Manufacturer

Straight Bevel Gears

Custom straight-tooth bevel gears and pinions for transmitting motion between intersecting shafts.

  • Straight-tooth gear and pinion geometry reviewed as a matched pair
  • Intersecting shaft angle, ratio, cone angles, and mounting distance confirmed
  • Finished bore, keyway, spline, hub, or integral pinion shaft made by drawing
View category details

China Spiral Bevel Gears Manufacturer

Spiral Bevel Gears

Custom curved-tooth spiral bevel gear and pinion sets for intersecting-shaft transmission systems.

  • Curved-tooth spiral gear and pinion reviewed as one matched set
  • Spiral hand, angle, ratio, shaft angle, and mounting distances confirmed
  • Contact pattern, backlash, bearing support, and lubrication included in technical review
View category details

China Screw Gears Manufacturer

Screw Gears

Custom crossed helical or screw gear pairs for transmitting light-to-moderate motion between non-parallel, non-intersecting shafts.

  • Crossed-axis geometry and shaft angle confirmed
  • Helix angle and hand reviewed for both mating gears
  • Material pair and lubrication considered for sliding contact
View category details

China Worm Gears Manufacturer

Worm Gears and Worm Wheels

Custom worm shafts, worm wheels, and matched sets for compact reduction and right-angle transmission.

  • Single- or multi-start worm geometry by drawing
  • Worm shaft and wheel materials reviewed as a pair
  • Ratio, center distance, backlash, and lubrication confirmed
View category details

China Plastic Gears Manufacturer

Plastic Gears

Custom engineering-plastic gears and racks for low-mass, corrosion-conscious, or low-lubrication mechanisms.

  • Gear form and polymer selected for the actual environment
  • Metal hub, insert, or all-plastic construction by drawing
  • Thermal and moisture-related dimensional change considered
View category details

China DP Gears Factory

Inch and DP Gears

Custom diametral-pitch spur gears and replacement components for inch-based machinery.

  • Diametral pitch and pressure angle confirmed
  • Inch bore, keyway, hub, and face dimensions by drawing
  • Replacement samples reviewed with mating and center-distance data
View category details

China Gear Shafts Manufacturer

Gear Shafts and Pinions

Custom integral spur, helical, bevel, and worm pinion shafts for compact transmission assemblies.

  • Spur, helical, bevel pinion, and worm shaft forms by drawing
  • Bearing journals, splines, threads, shoulders, and keyways integrated
  • Heat-treatment zones, straightness, and runout reviewed
View category details

China Gearbox Components Manufacturer

Gearbox Components

Custom gears, shafts, pinions, worm sets, and matched bevel pairs for gearbox manufacturing and maintenance.

  • Gear and shaft components reviewed against the assembly
  • Spur, helical, bevel, and worm transmission parts by drawing
  • Ratio, center distance, bearing, and housing interfaces considered
View category details

China Ground Gear Rack Manufacturer

Ground Helical Gear Racks

Precision DIN 6 and DIN 7 CNC ground helical gear racks and matched pinions for high-speed, low-noise linear motion and heavy-duty gantry drives.

  • Accuracy grade DIN 6 / DIN 7 with pitch error < 0.035 mm/m
  • 19°31'42" Right-Hand or Left-Hand helix angle
  • 6-side precision CNC surface grinding for true datum flatness
  • Induction hardened or case-carburized teeth (HRC 50-60)
  • Butt-joint continuous end machining with pre-drilled holes
View category details

Planetary Gear Sets Manufacturer

Planetary Gear Sets

High-torque, compact planetary gear sets—including precision ground sun gears, matched planet pinions, CNC-bored planet carriers, and internal ring gears—engineered for servo reducers and mobile drivetrains.

  • Complete 4-part epicyclic manufacturing: sun gear, matched planet pinions, carrier, and internal ring gear
  • Micro-geometry tooth profile (Cα) and lead crowning (Cβ: 3–15 µm) for balanced planetary load sharing (Kγ)
  • Hardened & precision-ground needle roller bearing bores (58–62 HRC, cylindricity ≤ 0.005 mm, Ra ≤ 0.2–0.4 µm)
  • Carburized & CNC tooth flank ground sun/planet gears (58–62 HRC, DIN 5–7 / AGMA 11–13)
  • Low-distortion plasma/gas nitrided (650–750 HV) or carburized internal ring gears (Module M0.5–M12)
  • Single-stage (3:1 to 10:1) and multi-stage compound reduction ratios (up to 1000:1+)
View category details

China spline shafts manufacturer

Spline Shafts and Hubs

Precision involute and straight-sided spline shafts, splined sleeves, and couplings for heavy-torque power transmission and sliding drive connections.

  • Standard compliance: DIN 5480, DIN 5482, ANSI B92.1, ISO 4156, GB/T 3478, SAE J499
  • Involute spline module (M0.5 - M10) and DP pitch (DP 8/16, 12/24, 16/32, 24/48)
  • Flank-centered (side-fit) or major/minor diameter centering
  • Internal and external spline mating: shafts, sleeves, hollow hubs, and splined gear couplings
  • Total indicated runout (TIR) < 0.01 mm across precision ground bearing journals
View category details

China hydraulic gear pumps manufacturer

Hydraulic Gear Pumps

External hydraulic gear pumps, tandem dual-section units, and two-stage assemblies for agricultural tractors, forklifts, log splitters, and combine harvesters.

  • Pump architectures: Single-section, tandem dual-displacement, and two-stage high/low pressure
  • Nominal displacement range: 3.5 ml/r to 36.0 ml/r (tandem combinations up to 30/14 ml/r)
  • Maximum working pressure: Up to 25.0 MPa (250 bar / 3,625 psi)
  • Rotational speed capability: 500 to 3,600 r/min continuous and intermittent ratings
  • Port standards: UNF, metric fine (M14/M16/M18), BSP (G), and American NPT threads
  • Shaft options: Involute spline (SAE / DIN), cylindrical keyed, and tapered keyway drive shafts
View category details

Custom manufacturing workflow

From drawing review to controlled gear production.

ZhongYi turns factory machining experience into a clear RFQ path: buyers can submit drawings, samples, materials, application conditions, tolerance requirements, and order quantity for engineering review before quotation.

  1. 01

    Drawing or sample review

    Controlled communication step for overseas buyers who need clear manufacturing confirmation before placing an order.

  2. 02

    Material and process confirmation

    Controlled communication step for overseas buyers who need clear manufacturing confirmation before placing an order.

  3. 03

    Gear machining and heat treatment

    Controlled communication step for overseas buyers who need clear manufacturing confirmation before placing an order.

  4. 04

    Dimensional and gear inspection

    Controlled communication step for overseas buyers who need clear manufacturing confirmation before placing an order.

  5. 05

    Packing and shipment coordination

    Controlled communication step for overseas buyers who need clear manufacturing confirmation before placing an order.

ZhongYi gear production workshop and machining capabilityEngineering drawing review for custom gear manufacturing

Factory evidence

Trust signals converted from factory capability, not decorative claims.

Factory history, workshop scenes, detection equipment, process flow, quality control, and verified company facts support overseas buyer due diligence.

Quality System

ISO9001 quality system certification referenced from existing company information.

Factory Experience

Founded in 2003, focused on gear manufacturing and transmission components.

Inspection Review

Inspection equipment, dimension checks, and gear quality verification support consistent custom gear production.

Dedicated Export Division

Hangzhou Jinzhuo Technology Development Co., Ltd. manages global RFQs, contracts, and export logistics under the motto "Spare no effort, pursue excellence".

Industry Gear Solutions

Precision & Heavy-Duty Gear Applications

Review our dedicated gear engineering solutions by industry sector. From heavy-shock mining gears and sub-arcminute robotics to ultra-quiet medical drives and 20-year renewable energy systems.

View All 5 Applications

RFQ checklist

What buyers prepare before quotation.

  • Gear type, drawing, sample, or reference part
  • Material, heat treatment, and surface requirement
  • Module, teeth, bore, keyway, and tolerance
  • Application conditions, load, speed, and quantity

Request a quote

Send drawings, samples, or technical requirements for review.

Our team can review your gear type, material, heat treatment, tolerance, order quantity, and application conditions before quotation.