Robotic arm rotary module for robots QJS 12

for joint

Product Overview
The QJS 12mm miniature planetary gear motor joint module is a compact all-metal transmission unit with a 12 mm outer diameter and a stainless steel output shaft, engineered for micro-robotics, dexterous hand joints, robotic exoskeletons and compact automation systems.

Key Features

• 12 mm ultra-compact outer diameter
• All-metal planetary gear construction
• Stainless steel output shaft with roller bearing
• Up to 90% transmission efficiency depending on gear stages

Parameters
Model: QJS 12mm
Number of gear stages: 1, 2, 3, 4
Reduction ratios: 1-stage: 4; 2-stage: 16, 24, 36; 3-stage: 64, 96, 144, 216; 4-stage: 256, 384, 576, 864, 1296
Gear length (mm): 1-stage: 15.5; 2-stage: 18.2; 3-stage: 21.1; 4-stage: 23.6
Max. allowable continuous torque (kgf·cm): 1-stage: 0.45; 2-stage: 0.8; 3-stage: 1.6; 4-stage: 2.4
Max. allowable momentary torque (kgf·cm): 1-stage: 0.8; 2-stage: 1.2; 3-stage: 2.2; 4-stage: 3.0
Efficiency (%): 1-stage: 90; 2-stage: 81; 3-stage: 73; 4-stage: 65
Outer diameter: 12 mm
Gear structure: Planetary
Output shaft material: Stainless steel
Output shaft bearing type: Roller bearing
Gear material: Machined metal gears
Housing material: Metal
Operating humidity: 20%–85% RH
Operating temperature: -25°C–+100°C
Customization: Designed and manufactured according to customer requirements

Recommended Industries

• Humanoid robots & dexterous hands
• Robotic lawnmowers & outdoor service robots
• Pool & cleaning robots

Technical specifications

• Model family: QJS series
• Outer diameter: 12 mm
• Gear structure: Planetary
• Output shaft: Stainless steel with roller bearing
• Gear material: Machined metal gears
• Number of gear stages available: 1 / 2 / 3 / 4
• Available reduction ratios: 4; 16, 24, 36; 64, 96, 144, 216; 256, 384, 576, 864, 1296
• Gear length options: 15.5 mm, 18.2 mm, 21.1 mm, 23.6 mm (by stage)
• Max continuous torque (kgf·cm): 0.45 / 0.8 / 1.6 / 2.4 (by stage)
• Max momentary torque (kgf·cm): 0.8 / 1.2 / 2.2 / 3.0 (by stage)
• Efficiency: up to 90% (varies by stage)
• Operating humidity: 20%–85% RH
• Operating temperature: -25°C to +100°C
• Customization: Manufactured to customer requirements