OIL-FILLED POTENTIOMETER(Precision 1-turn, Multi-turn & Linear-motion, Wirewound, Hybrid & Conductive Plastic Element)

SAKAE Model OF series oil-filled potentiometers are theproducts of high reliability and long life expectancy,
developed and marketed for the first time in Japan and canbe used unaffected even in a special environment where
there exist, for example, harmful salt, moisture, organic
gas, etc. In addition, our OF series retain stable contact
resistance for a long period of time and provide a very longlife expectancy of shaft revolutions.
Most suitable applications of these potentiometers are for
automatic controls in such fields as ship building, coastal
electric facilities, pits and mines, iron works, chemicalfactories, unmanned underground facilities and numericalcontrol machine tools. There are 3 kinds of resistive
element: wirewound type which features good stability,
conductive plastic type which offers long life expectancy
and excellent high speed tracking ability and hybrid typewhich features a combination of the merits of wirewound
type and conductive plastic type.

THE NOMENCLATURE OF SAKAE OIL-FILLED POT. SERIESSOFCP50● 4 or 5 digits branch number
to be used for specificrequirements.

● Special Specifications

S means the potentiometer with special mechanicalspecifications.

● Number of Gangs
G means 2 ganged potentiometer on thesame axle. The potentiometer consists ofone single section unless G is given.

● TypeOF means oil-filled type potentiometer.

● Terminal Connection Diagram
Yellow (A)13CW

G - ○○○○○

2● Kind of Incorporated Potentiometer
CP50 means that the incorporated potentiometer is our model
CP50. Various kinds of potentiometers such as 1-turn, multiturn and linear-motion types can be incorporated and ourstandard model number of the incorporated pot. is given here.

Green (C)Red (B)

A,B,C in parentheses mean codes of connectors
when those are mounted on the pot.

SELECTION GUIDETK20

TypeApplications
For general setting

1-turnFor servo use

For general setting

10-turn

Linear-motion

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Kind of ElementFeatures

WirewoundOF30, OF50

Most popular as well as low-cost potentiometer in this series.

Wirewound

OF50PB, OFCP50

Precision version of the above for servo application.

Conductive Plastic

OF30-MCA

Small size and long life expectancy potentiometer with essentiallyinfinite resolution.

Wirewound

OF46HD-10

Precision 10-turn potentiometer incorporated.

Wirewound

OF46HDS-10

Precision 10-turn potentiometer incorporated and withservomount.

HybridOF20HHP-10S
OF20HHPS-10S

10-turn long life expectancy potentiometer with hybrid resistiveelement. Bushingmount and servomount are available.

Wirewound

OF20LP, OF40LP

Precision linear-motion long life expectancy potentiometer
incorporated.

For servo use

For general setting
and servo use

Model No.

● General Performances

Wirewound(1-turn type)

OF30

500, 1k, 2k, 5k, 10kΩ

50〜20020k±2.0〜±0.5−

○

−

−

OF50

100, 200, 500, 1k, 2k, 5k, 10k, 20kΩ

5〜5050k±1.0〜±0.5

○

○

−

○

OF50PB

100, 200, 500, 1k, 2k, 5k, 10k, 20kΩ

5〜50

50k

±1.0〜±0.5

○

○

−

○

OFCP501k, 2k, 5k, 10k, 20k, 50kΩ

50〜500−±0.5〜±0.1

○

○−

○

OF30-MCA

1k, 2k, 5k, 10kΩ−

20k, 50k,100k±1.0〜±0.5

−

○

−

−

50200k

±0.3〜±0.1

○

−

○

○

−−±0.25〜±0.1−○−−

OF46HD-10Wirewound(10-turn type) OF46HDS-10
OF20HHP-10S
Hybrid(10-turn type) OF20HHPS-10S
Wirewound(Linearmotion type)100,200,500,1k,2k,5k,10k,20k,50k,100kΩ
100,200,500,1k,2k,5k,10k,20k,50k,100kΩ
2k, 5k, 10k, 20k, 50k, 100kΩ
2k, 5k, 10k, 20k, 50k, 100kΩ

OF20LP

100, 200, 500, 1k, 2k, 5k, 10k, 20k, 50kΩ

5080k

±0.7〜±0.25

−

○−

−

OF40LP

100, 200, 500, 1k, 2k, 5k, 10k, 20k, 50kΩ

50100k

±0.5〜±0.1

−

○−

−

Contact type

ConductivePlastic(1-turn type)Special Specifications
SpecialSpecial
IndependentLowerHigherLinearity
Front andWith
MultiResistance ResistanceTolerance Rear Shaft Extra
Taps
Switch ganged
Values (Ω) Values (Ω)(%)
ExtensionStandard
TotalResistanceRange (Ω)

Model No.

▼Oil-filled

Kind ofElement

Note: 1. For detailed performances, please refer to the general specifications of each model in this catalog.

● Environmental Performances
Model Nos. OF30, OF50, OF50PB, OFCP50, OF46HD,
Parameters
OF46HDS

OF30-MCA, OF20HHP, OF20HHPS

OF20LP, OF40LP

OperatingTemperature Range− 30℃〜＋ 60℃− 30℃〜＋ 60℃− 30℃〜＋ 60℃

Temperature
Cycle5 cycles under − 30℃〜＋ 60℃
Total resistance value variation:
within ± 5％
No mechanical damage

5 cycles under − 30℃〜＋ 60℃
Total resistance value variation:
within ± 5％
No mechanical damage

5 cycles under − 30℃〜＋ 60℃
Total resistance value variation:
within ± 5％
No mechanical damage

Exposure at Low
Temperature

24 hours at − 30℃
Total resistance value variation:
within ± 5％
No mechanical damage

24 hours at − 30℃
Total resistance value variation:
within ± 5％
No mechanical damage

24 hours at − 30℃
Total resistance value variation:
within ± 5％
No mechanical damage

Exposure at High
Temperature

1,000 hours at 60℃
Total resistance value variation:
within ± 5％
No mechanical damage

1,000 hours at 60℃
Total resistance value variation:
within ± 5％
No mechanical damage

1,000 hours at 60℃
Total resistance value variation:
within ± 5％
No mechanical damage

Vibration

10Hz to 2,000Hz 98m/s2 12 hours
Total resistance value variation:
within ± 5％
No mechanical and electrical damage

10Hz to 2,000Hz 98m/s2 12 hours
Total resistance value variation:
within ± 5％
No mechanical and electrical damage

10Hz to 2,000Hz 98m/s2 12 hours
Total resistance value variation:
within ± 5％
No mechanical and electrical damage

Shock

294m/s2 11ms 18 times
Total resistance value variation:
within ± 1％
No mechanical and electrical damage

294m/s2 11ms 18 times
Total resistance value variation:
within ± 1％
No mechanical and electrical damage

294m/s2 11ms 18 times
Total resistance value variation:
within ± 1％
No mechanical and electrical damage

Moisture
Resistance

40℃ 95％ RH 2,000 hours
Total resistance value variation:
within ± 10％
Insulation resistance: over 100MΩ

40℃ 95％ RH 2,000 hours
Total resistance value variation:
within ± 10％
Insulation resistance: over 100MΩ

40℃ 95％ RH 2,000 hours
Total resistance value variation:
within ± 10％
Insulation resistance: over 100MΩ

No load at 40 r.p.m.
OF30, OF50………200,000 shaft
revolutions
OF46HD-10 …2,000,000 shaft
OF50PB
revolutions
OFCP50…………5,000,000 shaft……………………revolutions
Total resistance value variation:
within ± 5％ against initial value
Independent Iinearity tolerance:
within 150％ of specif ied valueNoise: within 500Ω E.N.R.

No load at 120 r.p.m.
OF30-MCA………10,000,000 shaft
revolutions
No load at 40 r.p.m.
OF20HHP-10………5,000,000 shaft
revolutions
Total resistance value variation:
within ± 10％ against initial value
Independent Iinearity tolerance:
within 150％ of specif ied value
Output smoothness: within 150％ ofspecif ied value

No load at 60 c.p.m.
OF20LP……2,000,000 shaft
reciprocating motions
OF40LP……5,000,000 shaft
reciprocating motions
Total resistance value variation:
within ± 5％ against initial value
Independent Iinearity tolerance:
within 150％ of specif ied value
Noise: within 500Ω E.N.R.

｝

Rotational LifeExpectancy(at 25℃ )Note: 2. In the case of the potentiometer with special resistance values and special specifications, the above performances may vary and therefore, please consult us in advance, separately.
3. As for operating temperature range, we can’t always guarantee exactly the same performances and values in actual industrial applications even if the temperature out there is within standardrange. (Please see page 23 in this catalog for further details.)
4. All values of each parameter were measured under standard temperature and standard testing conditions. For the values during the tests and other characteristics, please ask us separately.

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