Product Description

Linear joint actuators use high-performance ball screw or planetary roller screw transmission for direct linear motion. Peak thrust reaches up to 8000N, with peak linear speed up to 550mm/s. Repeat positioning accuracy reaches 0.02mm, meeting the demands for precise linear motion. Multiple thrust, stroke, and transmission configurations are available for robotic and automation applications.
Product parameters
Category | Item | SJTr-d1B-40-500 | SJTr-2B-80-4000 | dlR-40-500 | 2R-80-4000 | 3R-110-8000 | R-80-8000 | SJTr-2BI-80-4000 | SJTr-2RI-80-4000 |
Actuator Parameters | Rated Thrust(N) | 200 | 1000 | 200 | 1000 | 2000 | 2000 | 1000 | 1000 |
Peak Thrust(N) | 500 | 4000 | 500 | 4000 | 8000 | 8000 | 4000 | 4000 | |
Screw Lead(mm) | 1 | 3 | 1 | 3 | 4.2 | 2.4 | 3 | 3 | |
Stroke(mm) | 40 | 80 | 40 | 80 | 110 | 80 | 80 | 80 | |
Weight(kg) | 0.25 | 1.1 | 0.25 | 1.1 | 2.1 | 1.7 | 1.4 | 1.4 | |
Forward-Drive Transmission Efficiency | 0.8-0.9 | 0.8-0.9 | 0.8-039 | 0.8-0.9 | 0.8-0.9 | 0.8-0.9 | 0.8-0.9 | 0.8-0.9 | |
Motor Parameters | Rated Voltage(VDC) | 48 | 48/72 | 48 | 48/72 | 48/72 | 48 | 48/72 | 48/72 |
Rated Output Power(W) | 50 | 300 | 50 | 300 | 1100 | 600 | 300 | 300 | |
Rated Torque(Nm) | 0.04 | 0.6 | 0.04 | 0.6 | 1.7 | 1 | 0.6 | 0.6 | |
Instantaneous Maximum Torque(Nm) | 0.1 | 2.2 | 0.1 | 2.2 | 6.8 | 3.6 | 2.2 | 2.2 | |
Rated Phase Current(A) | 1 | 10 | 1 | 10 | 25 | 20 | 10 | 10 | |
Instantaneous Maximum Phase Current(A) | 4 | 40 | 4 | 40 | 100 | 89 | 40 | 40 | |
Torque Constant(Nm/A) | 0.025 | 0.0489 | 0.025 | 0.0489 | 0.068 | 0.0404 | 0.0489 | 0.0489 | |
Encoder Resolution | 17bit | 17bit | 17bit | 17bit | 17bit | 17bit | 17bit | 17bit | |
Mechanical Interface | Axial Mounting Distance(mm) | 128-168 | 250-330 | 128-168 | 250-330 | 236-346 | 204.5-284.5 | 250-330 | 250-330 |
Fixed-End Mounting Hole Diameter(mm) | 5 | 8 | 5 | 8 | 10 | 10 | 8 | 8 | |
Moving-End Mounting Hole Diameter(mm) | 5 | 10 | 5 | 10 | 10 | 10 | 10 | 10 | |
Transmission Type | Ball Screw | Ball Screw | Planetary Roller Screw | Planetary Roller Screw | Planetary Roller Screw | Planetary Roller Screw | Ball Screw | Planetary Roller Screw | |
Repeat Positioning Accuracy(mm) | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 |
Product Views
High Thrust Output
Linear joint actuators use high-performance screw transmission to deliver direct axial thrust. Different models cover multiple thrust levels, with peak thrust up to 8000N for demanding robotic and automation applications.
High-Speed Linear Motion
Linear joint actuators support high-speed linear motion, with peak linear speed up to 550mm/s. They enable rapid extension, retraction, and position changes for responsive robotic and automation systems.
High-Precision Repeat Positioning
Linear joint actuators provide stable repeat positioning performance with an accuracy of 0.02mm, meeting the requirements of precise position control and repetitive motion in robotic and automation systems.
Multiple Screw Transmission Options
Depending on the model, linear joint actuators use ball screw or planetary roller screw transmission. Multiple lead, stroke, and thrust configurations are available for different linear motion requirements.
Application Cases
CNC Workstation
Carbon Fiber 3D Printing Equipment
Automated Hoisting System












