Rotary Potentiometer
RDP
Rotary Dual Potentiometer — Dual Independent 70° Outputs, 50.8 mm Body
Dual Output
IP54
±1% Linearity
10M Life
Rotary Dual Potentiometer — Dual Independent 70° Outputs, 50.8 mm Body
The RDP is a rotary dual potentiometer delivering two fully independent resistive outputs (R1 and R2) from a single servo-size 20 housing. Both elements share a common wiper output, making the RDP ideal wherever dual-channel position feedback or redundant angle measurement is required. The conductive plastic element provides infinite resolution with a rated life of 10 million movements.
Dual independent outputs — R1 and R2 share a common wiper, enabling two simultaneous feedback channels
Infinite resolution — conductive plastic element with no quantisation steps
±1% linearity — consistent accuracy across the full 70° electrical travel
10 million movement life — long-life conductive plastic element suited to continuous duty
Servo size 20 body — compact 50.8 mm diameter, drop-in replacement for standard servo pots
IP54 protection — sealed against dust ingress and water splashing
| Body Diameter | 50.8 mm (servo size 20) |
| Shaft Diameter | 6 mm or 6.34 mm (others on request) |
| Electrical Angle R1 | 70° |
| Electrical Angle R2 | 70° |
| Mechanical Angle | 325° (mechanically limited) |
| Output Type | Resistive (potentiometric) |
| Linearity | ±1% |
| Repeatability | 0.1° max. |
| IP Rating | IP54 |
| Operating Temperature | −25°C to +75°C |
| Body Material | Aluminium |
| Shaft Material | Stainless steel |
| Weight | ~80 g |
| Supply Voltage | 42 V max. |
| Resistance Values | 5 kΩ (R1=2.5kΩ, R2=2.5kΩ) or 10 kΩ (R1=5kΩ, R2=5kΩ) |
| Resistance Tolerance | ±20% |
| Resistance Element | Conductive plastic |
| Resolution | Infinite |
| Recommended Wiper Current | 100 µA max. |
| Minimum Life (electrical) | 10 million movements |
| Electrical Connection | 3×0.102 mm² soft PVC cable, 1 m standard |
| Torque | 0.5 Ncm max. |
| Max. Operating Speed | 300 RPM |
| Storage Temperature | −25°C to +105°C |
| R1 (Pin 1) | Black |
| Output / Common Wiper (Pin 2) | Yellow |
| R2 (Pin 3) | Red |
The output (yellow) is the common wiper point shared between R1 and R2. Both resistive elements operate independently — R1 measured between Black and Yellow, R2 between Red and Yellow.
Standard 5 kΩ version shown. 10 kΩ version uses R1=5 kΩ, R2=5 kΩ with same wiring colours.
50.8 mm body diameter, servo size 20
Contact us for the full technical drawing (PDF)
Get a quote or ask about resistance values, shaft sizes, and cable options.