18CrNiMo7-6 High Precision Robot Joint Gear For Industrial Robot

18CrNiMo7-6 High Precision Robot Joint Gear For Industrial Robot

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

Main Applications

• 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

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