Description

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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 grinding.
Core Capabilities: Single and multi-start threading, custom tooth profiling, and matched gear-worm pairing.

Matched Assembly: Supplied as complete worm and worm wheel sets to ensure precise meshing and minimized backlash.

Technical Specifications

Parameter	Standard Capability / Range
Material	Alloy Steels (4140, 8620), Bronzes (CuSn12, C93200), Stainless Steels (304, 316), Cast Iron
Size Capacity	Outer Diameter: Up to d 500 mm; Length: Up to 800 mm
Tolerance	+/- 0.005 mm (depending on feature and material)
Gear Accuracy	DIN 3962 Class 6 to 8 (AGMA Q10 equivalent)
Surface Roughness	Ra 0.4 um to 1.6 um on tooth flanks
Processing Range	Module 0.5 to Module 10
Equipment & Process	CNC Hobbing Machines, CNC Thread Grinding Machines, 5-Axis CNC Machining Centers, Induction Hardening

Key Features

Tight Tooth Profile Control: Precision thread grinding and hobbing maintain exact pressure angles and eliminate cumulative pitch errors.

Controlled Backlash: Tailored tooth thickness adjustment achieves minimal backlash for precise positional feedback systems.

Wear Resistance & Hardness: Worms can be carburized and induction hardened (55-60 HRC) while mating bronze wheels provide low-friction engagement.

Complex Geometry Support: Capable of producing multi-start threads, hollow shafts, and specialized mounting bores.

Small Batch to Medium Production: Flexible setup accommodates custom prototype runs and stable recurring batch shipments.

Applications

Industrial Equipment: Heavy-duty gearboxes, lifting mechanisms, and winches.

Automation & Robotics: Rotary indexers and precise joint actuators.

Medical Devices: Surgical imaging tables and patient lift actuators.

Automotive: Steering mechanisms and seat adjustment drives.

Materials & Surface Finishes

Available Materials:

Steels: 20CrMnTi, 42CrMo, 8620 (heat-treatable)
Bronzes: Tin Bronze (CuSn12Ni2), Aluminum Bronze (CuAl10Fe5Ni5)
Stainless Steel: 304, 316, 17-4PH

Surface Finishes:

Hardening: Case hardening, induction hardening, nitriding
Coatings: Black oxide, passivation (for stainless steel), electroless nickel plating

Customization & OEM

Drawing / CAD Files: Accepted formats: STEP, IGES, DXF, PDF (with GD&T callouts).

Custom Dimensions: Manufactured strictly to customer specifications, including custom bore sizes, keyways, and mounting flanges.

Tolerance Requirements: Custom fit classes and specialized tooth thinning configurations supported.

Material Selection: Engineering consultation available for matching worm and gear material pairs to prevent galling and premature wear.

Production Stages: Rapid prototyping for validation followed by scalable batch production.

Quality Control

CMM Inspection: 3D coordinate measuring machines verify gear tooth geometry, lead, and profile deviations.

Dimensional Inspection: Micrometers, thread pitch micrometers, and plug gauges for physical dimensions.

Surface Roughness Testing: Profilometers measure flank and bore surface finishes.

Material Inspection: Spectrometer material analysis and hardness testing (Rockwell/Brinell) prior to machining.

Final Inspection: 100% visual and critical-dimension check with dimensional inspection reports provided per shipment.

Packaging & Delivery

Protective Packaging: Individual anti-rust wrapping, VCI paper/bags, and custom foam-lined cartons to protect precision tooth flanks during transit.

Batch Identification: Clear part number, batch number, and material heat code labeling on all packaging.

Export Packaging: ISPM 15-compliant fumigated wooden crates for international freight.

Lead Time: Prototypes: 2-3 weeks; Production Batches: 4-6 weeks based on volume and heat treatment requirements.

FAQ

Q: What is your MOQ?

A: Minimum order quantities start at 5 pieces for custom industrial parts.

Q: What gear accuracy grades can you achieve?

A: Standard production meets DIN 7 / AGMA 9, with high-precision grades reaching DIN 6.

Q: Can you supply matched worm and gear sets?

A: Yes. We machine and inspect both components together to ensure proper meshing contact patterns.

Q: Are material test reports provided?

A: Material mill test certificates and dimensional inspection reports are supplied with every order.

Q: What file formats are required for quoting?

A: 2D PDF drawings with tolerances and 3D STEP models.

Request a Quote

To receive a technical review and formal quotation within 24 hours, submit the following details:

Part Drawing / 3D CAD File (PDF + STEP format)

Material Specification

Required Quantity (per batch and annual forecast)

Tolerance and Gear Accuracy Requirements (e.g., DIN/AGMA grade)

Application or mating component details (if applicable)

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CNC Worm Gears