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Robot joint parts Types
joint axis
Machining Type: Precision shafts (stepped shafts, splined shafts, eccentric shafts);
Parameters: Tolerance ±0.003mm, Material (45# steel / stainless steel / titanium alloy), Surface Hardness (HRC58-62), Length Range (5mm-1000mm);
Suitable Applications: Industrial robot joints, automated equipment, medical robotic arms
Joint Housing
Machining Type: Housing Parts (Casting/forging blank processing, cavity processing, flange connection processing)
Parameters: Geometric tolerance ±0.008mm, wall thickness tolerance ±0.1mm, material (aluminum alloy/cast steel/engineering plastic), protection class (IP65 optional)
Suitable Applications: Robot joint housing, aerospace joint assembly, hydraulic joint housing
Rotary joint parts
Machining Type: Rotary bushings, connecting flanges, sealing rings, limit blocks;
Parameters: Rotational accuracy ±0.01mm, load capacity (50-5000N), friction coefficient ≤0.05, suitable speed (0-3000r/min);
Suitable Applications: Rotary robotic arm, radar rotary joint, hydraulic rotary joint
Gearbox parts
Machining Type: Gears / Gear Shafts / Bearing Housings / End Covers / Output Shafts, etc.;
Parameters:Module 0.5-8, Tooth Profile Accuracy Grade 6-8, Surface Treatment (Carburizing and Quenching / Nitriding), Compatible Gearbox Types (Planetary / Harmonic / Cycloidal);
Suitable Applications: earboxes for Reducers, New Energy Vehicle Transmissions, Industrial Gearboxes
Core advantages
High Precision
Tolerance ±0.005mm, suitable for multi-joint robots with 360° flexible operation.
Wear-resistant
Crafted using integrated forging and precision heat treatment processes, it offers impact and fatigue resistance.
Customization
Customization based on drawings is supported, adapting to the joint structures of different robot brands.
Robot Parts Material Types & Applications
| Material Type | Suitable Robot Parts | Core Material Properties | Application Scenarios | Processing Advantages |
| Carbon Steel 40CrNiMoA | Joint Shaft, Gearbox Shaft, Rotary Joint Shaft | High rigidity, excellent fatigue resistance, surface hardness up to HRC58-62 after heat treatment, good toughness | Industrial robot joints, heavy-load automated equipment, high-frequency operation robot transmission systems | Easy to process, stable heat treatment performance, cost-effective for mass production |
| Stainless Steel 304/316L | Joint Shaft, Rotary Joint Components, Medical Robot Parts | Corrosion resistance, rust prevention, good biocompatibility (316L), stable mechanical properties | Medical robotic arms, food processing robots, outdoor operation robots, humid environment robots | Smooth surface after processing, low maintenance cost, meets food & medical industry standards |
| Aluminum Alloy 6061/7075 | Joint Housing, Gearbox Cover, Lightweight Robot Components | Lightweight, high strength-to-weight ratio, good thermal conductivity, easy to machine and anodize | Collaborative robots, lightweight automated equipment, aerospace robot components, electronic manufacturing robots | Fast processing speed, good surface finish, energy-saving for robot operation |
| Cast Steel | Large Joint Housing, Gearbox Housing, Heavy-Duty Rotary Joint Housing | High strength, good impact resistance, uniform material structure, suitable for complex shapes | Heavy-load robot joints, large industrial robot housings, high-pressure hydraulic joint components | Adaptable to complex cavity structure processing, good dimensional stability after casting |
| Engineering Plastic PEEK/PA66+GF | Rotary Joint Sleeves, Sealing Rings, Lightweight Joint Components | Lightweight, wear resistance, self-lubrication, corrosion resistance, high temperature resistance (PEEK up to 260℃) | Precision rotary joints, low-noise robot components, high-temperature environment robot parts, electronic robot internal components | Low processing noise, good formability, can replace metal to reduce weight |
| Titanium Alloy TC4 | High-Precision Joint Shaft, Medical Robot Implant Parts, Aerospace Robot Components | Ultra-high strength, excellent biocompatibility, corrosion resistance, lightweight | Medical implant robot parts, aerospace robots, high-precision collaborative robots | High processing precision, stable performance in extreme environments, meets high-end industry requirements |
Frequently Asked Questions (FAQs)
Compatible with mainstream international robot brands (ABB, Fanuc, Yaskawa, etc.) and humanoid robots with Harmonic Drive/Nabtesco reducers (e.g., Tesla Optimus). Custom compatibility for special models available.
Non-standard customization supported (shaft extension, flange, etc.) based on robot structure/load. 7-workday response; sample ~22 days, mass customization 3-6 weeks (adjustable by quantity).
Sample testing available (precision/lifespan) in CNAS labs with reports. Sample delivery: 7-10 workdays. Custom tests on request.