China CNC Gear Parts Manufacturers Suppliers Factory - Wholesale CNC Gear Parts

Custom CNC Gear Parts | Precision Machined Gears & Components

Product Overview

Custom CNC gear parts engineered for industrial power transmission, motion control, and high-torque drives. We machine complex gear profiles directly from solid bar stock, billets, or forgings in accordance with your engineering drawings and geometric dimensioning and tolerancing (GD&T) specifications.

Manufacturing operations integrate multi-axis CNC turning centers, 5-axis milling machines, and dedicated gear hobbing and shaping equipment to produce spur gears, helical gears, bevel gears, internal gears, and splined shafts.

Built for OEM mechanical engineers and strategic sourcing teams requiring strict compliance with functional interfaces, our production infrastructure scales smoothly from single-piece prototyping to mid-to-high volume serial runs with verified batch-to-batch repeatability.

Custom CNC Gear Components
Custom CNC gear components manufactured strictly to engineering prints and 3D CAD models. Production focuses on precision power transmission elements—including spur, helical, bevel, worm, and
CNC Worm Gears
Custom CNC machined worm gears for high-ratio speed reduction and torque transmission in non-intersecting shaft configurations. Processed via multi-axis CNC hobbing, milling, and precision thread
CNC Bevel Gears
Custom CNC bevel gears are engineered for intersecting or right-angle shaft power transmission, heavily utilized in heavy-duty gearboxes, automotive differentials, and industrial robotics. Utilizing
CNC Helical Gears
CNC helical gears feature angled teeth engineered for gradual tooth engagement, resulting in higher load-bearing capacity, smoother operation, and reduced noise at high rotational speeds compared to
CNC Spur Gears
Custom CNC machined spur gears engineered for parallel-axis power transmission in industrial gearboxes, automation drives, and precision machinery. Featuring straight teeth parallel to the axis of
CNC Machined Gears
Custom CNC machined gears are precision power transmission components manufactured to exact engineering drawings. We produce spur gears, helical gears, bevel gears, worm gears, and internal gears

Technical Specifications

Parameter	Specification Range
Material	Alloy Steels (4140, 4340, 8620, 20CrMnTi), Stainless Steel (304, 316, 17-4PH), Aluminum (6061, 7075), Brass, Bronze, Engineering Plastics (POM, PEEK)
Size Capacity	Outer Diameter: 10 mm to 800 mm; Length/Height: Up to 600 mm
Dimensional Tolerance	Up to +/-0.005 mm (dependent on geometry, size, and material grade)
Gear Accuracy Class	DIN Class 6 to 9 / AGMA Class 10 to 12
Surface Roughness	Ra 0.4 um to 1.6 um on active tooth flanks and bearing journals
Processing Range	Module 0.5 to Module 10, Diametral Pitch 2.5 to 48
Equipment & Processes	5-Axis CNC Machining Centers, CNC Turning-Milling Centers, CNC Gear Hobbing, Gear Shaping, CNC Cylindrical Grinding, Controlled Heat Treatment (Carburizing, Induction Hardening, Nitriding)

Key Features

Dimensional Accuracy:

Strict control over tooth thickness, pitch circle runout, and concentricity minimizes transmission backlash and operational noise.

Batch Repeatability:

Automated tool path execution and in-process gauge verification ensure consistent performance across complete production lots.

Complex Geometry:

Multi-axis machining combines gear teeth, internal splines, keyways, cross-holes, and locating faces within single setups to minimize accumulated positioning errors.

Surface Quality:

Optimized feed rates and secondary finishing operations achieve low Ra values on active tooth flanks to lower friction coefficients and wear rates.

Tight Tolerances:

Capability to hold sub-micron tolerances on critical bearing fits, bores, and shaft seating diameters.

Applications

Automotive:

Transmission gear trains, differential assemblies, steering rack pinions, and oil pump drive gears.

Industrial Automation:

Precision planetary gearboxes, robotic actuator drives, and synchronized timing mechanisms.

Aerospace:

Mechanical actuator gears, auxiliary power unit components, and specialized transmission housings.

Medical Equipment:

Surgical power tool drives, diagnostic scanner positioning mechanisms, and infusion pump gearheads.

Robotics & Electronics:

Miniature reduction gear units and high-resolution servo motor gear components.

Materials & Surface Finishes

Material Options

Alloy Steels: AISI 4140, AISI 4340, AISI 8620, 20CrMnTi (suited for case hardening and high-stress fatigue loads).

Stainless Steels: AISI 304, AISI 316, 17-4PH Precipitation Hardening Stainless Steel (applied for corrosion resistance and structural strength).

Non-Ferrous Metals: Aluminum 6061-T6, 7075-T6; Phosphor Bronze, Aluminum Bronze (utilized for low-friction worm gear pairings).

Plastics: Delrin (POM), PEEK, Nylon (selected for lightweight, low-noise, or unlubricated operating environments).

Surface Finishes & Heat Treatments

Heat Treatment: Carburizing and Case Hardening (HRC 58-62), Induction Hardening, Through-Hardening, Gas Nitriding.

Coatings & Platings: Black Oxide, Anodizing (Type II & III), Electroless Nickel Plating, Passivation, Zinc Plating.

Mechanical Finishing: Shot Peening (for residual compressive stress and fatigue strength enhancement), Gear Grinding, Vibratory Deburring.

Customization & OEM

Production is executed strictly according to customer-supplied engineering packages.

Drawing / CAD Files: Accepted formats include STEP, IGES, Parasolid, DXF, and 2D PDF engineering drawings featuring complete GD&T tolerancing.

Custom Dimensions: Tailored module, face width, pressure angle (14.5°, 20°, 25°), and helix angle specifications.

Tolerance Requirements: Custom fit classes (e.g., H7, g6) and application-specific backlash allocations.

Material Selection: Direct sourcing of certified raw materials conforming to ASTM, AISI, DIN, or JIS standards, supplied with full Mill Test Certificates (MTC).

Prototype & Mass Production: Dedicated setup for rapid functional prototyping (1-10 pieces) scaling directly to serial production (1,000+ pieces).

Quality Control

Manufacturing quality is verified through metrology and testing protocols prior to packaging:

CMM Inspection:

3D coordinate measuring machines verify complex gear tooth profiles, helix angles, and spatial feature locations.

Dimensional Inspection:

Calibrated micrometers, bore gauges, pin gauges, and optical comparators check outer diameters, bore sizes, and axial lengths.

Surface Roughness Testing:

Contact profilometers measure Ra values across tooth flanks and journal seating areas.

Material & Hardness Inspection:

Spectral analysis and hardness testing (Rockwell/Vickers) verify chemical composition and case hardening depth.

Final Inspection:

100% visual checks for burrs, clean threads, and preservation status. Comprehensive Inspection Reports (IR) and Material Test Reports (MTR) are provided with every shipment.

Packaging & Delivery

Protective Packaging:

Individual VCI (Volatile Corrosion Inhibitor) anti-rust bags, custom CNC-routed EVA foam trays, or heavy-duty corrugated separators to eliminate tooth chipping and transit impact.

Batch Identification:

Barcoded exterior labels indicating part numbers, revision levels, heat lot numbers, and exact quantities.

Export Packaging:

ISPM 15 compliant fumigated wooden crates or reinforced double-wall cartons designed for international freight handling.

Lead Time:

Prototypes delivered in 7-15 days; serial production orders delivered in 3-5 weeks depending on raw material availability, heat treatment processing, and order volume.

FAQ

Q: What is the Minimum Order Quantity (MOQ)?

A: No strict MOQ. We support single-piece engineering samples alongside serial production batches. Unit pricing is structured around volume scaling.

Q: What gear accuracy classes can you achieve?

A: We routinely machine and finish gears to DIN Class 6-8 and AGMA Class 10-12 specifications, governed by the required hobbing and grinding operations.

Q: Can you provide material test reports?

A: Yes. Material Test Certificates (MTC) and dimensional inspection reports accompany all shipments.

Q: Are physical samples available for evaluation?

A: Yes. Initial samples are produced using final-process tooling and inspection parameters for your physical fit and functional validation.

Q: What file formats are required for an accurate quotation?

A: Please provide a 2D PDF drawing containing explicit tolerances, surface finish callouts, and material grades, alongside a 3D CAD file (STEP or IGES).

Request a Quote

To initiate a technical review and formal quotation, please send your project data package to our engineering team with the following details:
Part Drawing / 3D CAD File (2D PDF drawing with GD&T callouts required)
Material Specification (Exact grade and standard)
Quantity (Prototype sample count and annual usage forecast)
Target Delivery Date

As one of the most professional cnc gear parts manufacturers and suppliers in China, we're featured by quality products and good price. If you're going to wholesale custom made cnc gear parts, welcome to get quotes from our factory. Also, OEM&ODM service is available.