
Overview
The Kunwei KWR57 Series is a six-axis force/torque sensor for measuring forces and moments in robotic-arm and load-monitoring tasks. Four versions—KWR57A, KWR57B, KWR57C and KWR57D—provide force ranges of 50, 200, 350 and 500 N respectively. All share a 57 mm diameter, 30 mm height and 1000 Hz sampling frequency, while their moment ranges and weights differ to suit different measurement requirements.
Features
- Six-axis measurement covers forces Fx, Fy and Fz, plus moments Mx, My and Mz.
- Circular aluminum-alloy housing with an anodized finish, central opening, face mounting holes and side-exit cable.
- Shared resolution of 0.03% FS, repeatability of 0.1% FS and accuracy* of 0.5% FS.
- 300% FS overload level and IP64 protection rating across all four versions.
- 12–48 VDC supply voltage* and 1000 Hz sampling frequency.
Specifications
| Parameter | Unit | KWR57A | KWR57B | KWR57C | KWR57D |
|---|---|---|---|---|---|
| Range Fx, Fy | N | 50 | 200 | 350 | 500 |
| Range Fz | N | 50 | 200 | 350 | 500 |
| Range Mx, My | N·m | 2 | 8 | 10 | 14 |
| Range Mz | N·m | 2 | 8 | 10 | 12 |
| Diameter | mm | 57 | 57 | 57 | 57 |
| Height | mm | 30 | 30 | 30 | 30 |
| Material | — | Aluminum alloy | Aluminum alloy | Aluminum alloy | Aluminum alloy |
| Surface treatment | — | Anodized | Anodized | Anodized | Anodized |
| Overload level | % FS | 300 | 300 | 300 | 300 |
| Resolution | % FS | 0.03 | 0.03 | 0.03 | 0.03 |
| Repeatability | % FS | 0.1 | 0.1 | 0.1 | 0.1 |
| Accuracy* | % FS | 0.5 | 0.5 | 0.5 | 0.5 |
| Weight | kg | 0.12 | 0.13 | 0.14 | 0.14 |
| Protection level | — | IP64 | IP64 | IP64 | IP64 |
| Working temperature | °C | −10 to 80 | −10 to 80 | −10 to 80 | −10 to 80 |
| Sampling frequency | Hz | 1000 | 1000 | 1000 | 1000 |
| Supply voltage* | VDC | 12–48 | 12–48 | 12–48 | 12–48 |
| Communication interface | — | RS422 / RS485 / MODBUS / CAN / CANFD / TCP / UDP / EtherCAT / USB, etc. | |||
Applications
- Robotic-arm load measurement: Measure forces and moments along all six axes to characterize loads during arm and tool interaction; select the version with force and moment ranges appropriate to the task.
- Force and torque monitoring: Record multi-axis loading at a 1000 Hz sampling frequency for measurement tasks requiring both force and moment data. KWR57A provides 50 N and 2 N·m ranges, while KWR57D provides 500 N force ranges, 14 N·m for Mx/My and 12 N·m for Mz.
Documents
- KUNWEI KWR57 Drawing Series — Drawing (PDF)
- KUNWEI KWR116 Drawing — 116 Drawing (PDF)
- Kunwei KWR63 Series RS485 — User Manual (PDF)
- KUNWEI 6 Axis Force Sensors Selection — Manual (PDF)
- KUNWEI KWR75 RS422 — User Manual (PDF)
FAQ
How do the four KWR57 versions differ?
KWR57A, KWR57B, KWR57C and KWR57D have force ranges of 50, 200, 350 and 500 N respectively on Fx, Fy and Fz. Their Mx/My ranges are 2, 8, 10 and 14 N·m, and their Mz ranges are 2, 8, 10 and 12 N·m. Weights are 0.12, 0.13, 0.14 and 0.14 kg respectively.
Do all four versions have the same overall size and sampling frequency?
Yes. All four versions have a 57 mm diameter, 30 mm height and 1000 Hz sampling frequency.
Visual Details
Product Views

Dimensions and Construction

Application Examples



