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18CrNiMo7-6 High-Precision Robot Joint Gear Set for Industrial Robotic Arm Drives
Robot joint gear is a high-precision gear designed for joint transmission of industrial robots, collaborative robots and humanoid robots. Made of high-strength alloy steel with precision gear grinding and professional heat treatment, it features small size, high torque, low backlash, high rigidity and long service life. It is used for precise direction change, speed reduction, torque increase and flexible motion control of robot joints, widely applied in core transmission systems of multi-joint robots.
Product Features
Ultra-high precision with accurate tooth profile and lead, ensuring precise transmission positioning
Extremely low backlash to guarantee robot repetitive positioning accuracy
Small size, light weight and compact structure for narrow joint space
High rigidity and load capacity to withstand frequent forward and reverse impact
Smooth operation, low noise and low vibration for high-speed start-stop conditions
Excellent wear resistance and long fatigue life for long-term continuous operation
Customizable small-module, low-tooth-count and special-shaped gears
Technical Parameter Table
Module
0.3–3.0
Accuracy Grade
ISO 17485 Grade 4–6
Backlash
≤1′–3′(arcmin)
Material
20CrMnTi,18CrNiMo7-6,42CrMo
Heat Treatment
Carburizing & quenching + low temperature tempering
Industrial robots: joints of 6-axis/4-axis robots, handling/welding/spraying robots
Collaborative robots: joint transmission of light-weight human-machine collaborative robots
Humanoid robots: transmission mechanisms of limb joints, waist and neck
Medical robots: precision joints of surgical robots and rehabilitation robots
Service robots: core transmission of food delivery, cleaning and inspection robots
Special robots: joint parts of explosion-proof, inspection and underwater robots
Automation equipment: robotic arms, rotating platforms and flexible actuators
Product Advantages
High precision and low backlash ensure accurate positioning without deviation
Impact resistance and fatigue resistance adapt to frequent start-stop and forward-reverse conditions
Compact and lightweight structure fits narrow installation space of robot joints
High transmission efficiency and low energy consumption improve robot endurance and response speed
Small heat treatment deformation, good dimensional consistency and strong assembly adaptability
Non-standard customization available, compatible with replacement of imported/domestic robot joints
Low running noise, suitable for clean workshops, medical and laboratory environments
Production Process
Raw material inspection: steel composition, hardness and flaw detection
Precision forging: cold/warm forging to ensure dense internal structure
Pre-heat treatment: normalizing to improve machinability
CNC turning: precision turning of inner/outer diameter, end face and steps
Hobbing/milling: semi-finish tooth profile with grinding allowance reserved
Carburizing & quenching: surface strengthening to improve hardness and wear resistance
Low-temperature tempering: eliminate internal stress and stabilize dimensions
Precision gear grinding: CNC grinding for tooth profile, lead and pitch
Deburring & cleaning: remove burrs, oil stains and impurities
Accuracy inspection: full inspection of tooth error, backlash, hardness and dimensions
Anti-rust treatment & packaging: oil immersion anti-rust and vacuum packaging
Cautions
Overload and over-speed operation are strictly prohibited to avoid gear impact fracture
Oil shortage and dry grinding are forbidden to prevent tooth wear, ablation and accuracy failure
Striking tooth surface during installation is not allowed to avoid tooth profile and precision damage
Prevent foreign matters from entering joint cavity to avoid abrasive wear
Operating temperature must not exceed the range of -40℃~120℃
Replace gears in pairs timely when wear or backlash exceeds standard
Stop immediately for inspection if abnormal noise, vibration or overheating occurs
Keep storage environment dry and ventilated to prevent corrosion from affecting precision
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1994
Total Annual:
70 million-100 million
Employee Number:
50~60
Ecer Certification：
Verified Supplier
Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Cha... Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Cha...
