OF40LP Series Linear Oil-filled Potentiometer

Wirewound potentiometer with front extended shaft and with connector

About the OF40LP Series Linear Oil-filled Potentiometer

The OF40LP is a long-life and long stroke type potentiometer with a waterproof connector and ball end mounting.

Features OF40LP

  • Oil-filled wirewound model
  • Measurement range: between 100mm and 300mm
  • Resistance value: 100 to 80kΩ
  • Linearity tolerance: ±0.5%, ±0.3%, ±0.25% and ±0.1%
  • Body dimensions (mm): Ø40x(depends on the type of sensor)

The OF40LP100, OF40LP200 and OF40LP300 are types from the OF40LP series.
Please contact us for more technical details on a type from the OF40LP series.

Special Specifications Available

Stroke 500mm (SOF40LP500), extra taps (available up to 1 tap), special machining on the shaft, non-oil-filled type, with conductive plastic resistive element.


Standard resistance range
100Ω~20kΩ, 100Ω~50kΩ, 200Ω~50kΩ
Max. practical resistance value
40kΩ, 80kΩ, 100kΩ
Total resistance tolerance
Standard class: ±5%
Precision class: ±3%
Independent linearity tolerance
Standard class: ±0.5%, ±0.3%
Precision class: ±0.25%, ±0.1%
Power rating
1.0W, 2.0W, 3.0W
Within 100Ω E.N.R.
100mm, 200mm, 300mm
Insulation resistance
Over 100MΩ at 500V.D.C.
Dielectric strength
1 minute at 900V.A.C.
Within 20N (2kgf)
Stopper strength
Approx. 90N (9kgf)
Resistance temperature coefficient
Approx. 1000g, approx. 1200g, approx 1500g
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