HELICALOHM

RMULTI-TURN POTENTIOMETER(Precision Multi-turn, Wirewound & Hybrid Element)

In 1946, we successfully developed the first ever multi-turnprecision potentiometer Helicalohm R . After several
refinements, we came through various precisionpotentiometers including the world smallest wire-woundpotentiometer 10HP-10. (Outer diameter is 10.5mm)
With superior quality without any peer and high reliability,

our multi-turn precision potentiometers received very highregards and high evaluations. Subsequently, we expanded
to the production of hybrid resistive element which offers
both characteristics of high resolution from film resistiveelement and excellent reliability as well as long life fromwire-wound resistive element.

THE NOMENCLATURE OF SAKAE HELICALOHM POT. SERIESS46

HD S - 10L● Special Specifications
S means the potentiometer with special mechanicalspecifications.

● Type and Internal Construction

H means helicalohm, multi-turn, linear potentiometer. There
are 4 kinds of HP, HHP, HD and HDS.
HP, HPC .....Wirewound type with resistive element helicallywound inside the pipe-shaped housing.
HHP............Hybrid type with same construction as HP type.
HD ..............Wirewound type with resistive element helicallywound on the drum-shaped base.

Kind ofElement

Pipe typeDiameter
(mm)

φ10.5
φ13HP

HHPWirewoundHybridModel No.
10HP
12HP, 12HP-P,12HPS, 12HPC,
12HPC-P, 12HPC-W

φ2020HP, 20HPS

φ2222HPM

φ2525HP, 25HPS

φ1312HHP, 12HHP-P,12HHPS

φ20

20HHP, 20HHPS

φ2222HHPM, 22HHPS

φ4646HD, 46HDSDrum type
HD28Wirewound● Application
L means for semi-fixed purpose. P means for p.c. terminals. W
means for lug terminals at rear end. S means shortened bodytype (only for 20HP-ns). E means inch dimensional bushing andshaft type.
● Number of Turns
10 means 10-turn. There are 5 kinds. They are 3, 5, 10, 15 and 20.

● Mounting Method
S means servomount type(in case of bushingmount type, S is deleted.)● TerminalConnection
Diagram

SELECTION GUIDEType● 4 or 5 digits branch number
to be used for specificrequirements.

● Number of Gangs
G means 2 ganged potentiometer on the same axle.
The potentiometer consists of one single section unless
G is given.(e.g. G3...3 ganged, G4...4 ganged.)● Diameter
46 means the approximate outer diameter of the potentiometer in metric system. The 6 standard diameters areavailable, namely, 10mm, 12mm, 20mm, 22mm, 25mm and46mm.

InternalConstruction

G - ○○○○○

1

2

3

CW
Features

World's smallest multi-turn pot. since 1965.
Low-cost multi-turn pot. of outer dia. of 13mm. Terminals for p.c.
board and rear terminals are also available.
Precision multi-turn pot. of outer dia. of 20mm. Servomount type isalso available.
Low-cost multi-turn pot. of outer dia. of 22mm.Most popular items forgeneral applications. Two kinds of bushing in 22HP series areavailable : plastic and metal.
Precision multi-turn pot. of outer dia. of 25mm. Various specials
based on this item are also available.
World's smallest multi-turn precision hybrid pot. of outer dia. of
13mm. Servomount type is also available.
Precision multi-turn hybrid pot. of outer dia. of 20mm. Servomounttype is also available.
Low-cost precision multi-turn hybrid pot. of outer dia. of 22mm.
Servomount type is also available.
Traditional item being manufactured continuously over 45 years.
Slide wire resistive element type which brings infinite resolution isavailable as standard version.

● General Performances
Kind ofElement

Model No.

10HP
12HP
Wirewound

12HPC
20HP
22HPM
25HP

HybridStandard
Total
ResistanceRange(Ω)

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

SpecialSpecial
Lower
HigherResistance ResistanceValues(Ω) Values (Ω)

Special Specif ications

Independent
Linearity
Tolerance(%)

ServomountType

Front andRear Shaft
Extension

Extra
Taps

SimpleSealing
TypeWith
Limit-Switch
AdaptorMultiganged

Semi-fixed
SettingType−

50k,100k± 0.25 〜± 0.1

−

○

−

−

−

−

−

−100k

± 0.25 〜± 0.1

○

○

−

○

−−

○

−100k

± 0.25 〜± 0.1

−

○

−

○

−

−

○

10,20,50100k± 0.2 〜± 0.1

○

○

○

○

−

○

○

−

100k

± 0.25 〜± 0.1

−

○

−○−

○

○

10,20,50200k± 0.2 〜± 0.1

○

○

○

−−○

−12HHP

2k,5k,10k,20k,50k−−± 0.4 〜± 0.1

○

○

−

○

−

−

○

20HHP

1k,2k,5k,10k,20k,50k,100k−−± 0.25 〜± 0.1

○

○

○

○

−

○

○

22HHPM

1k,2k,5k,10k,20k,50k,100k−−± 0.25 〜± 0.1

○

○

−

○−

○

○

46HD

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

−

200k

± 0.3 〜± 0.1

○

○

−

○

○

○

−

Wirewound(with adaptor)

Note: 1. All values are based on our standard 10-turn models per each series and for further technical details, please see each articles of the models mentioned in this catalog.

● Environmental Performances
Model Nos.
Parameters

10HP, 12HP, 20HP, 25HP, 46HD

12HPC, 22HPM

12HHP, 20HHP, 22HHPM

OperatingTemperature Range− 55℃〜＋ 105℃

− 55℃〜＋ 105℃

− 55℃〜＋ 105℃

TemperatureCycle

5 cycles under − 55℃〜＋ 105℃
Total resistance value variation:
within ± 5％
No mechanical damage

5 cycles under − 55℃〜＋ 105℃
Total resistance value variation:
within ± 5％
No mechanical damage

5 cycles under − 55℃〜＋ 105℃
Total resistance value variation:
within ± 5％
No mechanical damage

Exposure at Low
Temperature

24 hours at − 55℃
Total resistance value variation:
within ± 5％
No mechanical damage

24 hours at − 55℃
Total resistance value variation:
within ± 5％
No mechanical damage

24 hours at − 55℃
Total resistance value variation:
within ± 5％
No mechanical damage

Exposure at High
Temperature

1,000 hours at 105℃
Total resistance value variation:
within ± 5％
No mechanical damage

1,000 hours at 105℃
Total resistance value variation:
within ± 5％
No mechanical damage

1,000 hours at 105℃
Total resistance value variation:
within ± 5％
No mechanical damage

Vibration

10Hz to 2,000Hz 147m/s2 12 hours
Total resistance value variation:
within ± 5％
No mechanical and electrical damage

10Hz to 2,000Hz 147m/s2 12 hours
Total resistance value variation:
within ± 5％
No mechanical and electrical damage

10Hz to 2,000Hz 147m/s2 12 hours
Total resistance value variation:
within ± 5％
No mechanical and electrical damage

Shock

490m/s2 11ms 18 times
Total resistance value variation:
within ± 1％
No mechanical and electrical damage

490m/s2 11ms 18 timesTotal resistance value variation:
within ± 1％
No mechanical and electrical damage

490m/s2 11ms 18 times
Total resistance value variation:
within ± 1％
No mechanical and electrical damage

Moisture
Resistance

40℃ 95％ RH 240 hours
Total resistance value variation:
within ± 10％
Insulation resistance: over 10MΩ40℃ 95％ RH 120 hours
Total resistance value variation:
within ± 10％
Insulation resistance: over 10MΩ40℃ 95％ RH 120 hours
Total resistance value variation:
within ± 10％
Insulation resistance: over 10MΩNo load at 40 r.p.m.
3-turn… ………600,000 shaft
revolutions
5-turn… ………1,000,000 shaft
revolutions
10-turn…
……
15-turn
2,000,000 shaft
20-turn… revolutions

No load at 40 r.p.m.
3-turn… ………300,000 shaft
revolutions
5-turn… ………500,000 shaft
revolutions
10-turn… …… 1,000,000 shaft
revolutions

No load at 40 r.p.m.
5-turn… ………5,000,000 (2,500,000) ※shaft
revolutions
10-turn… ……10,000,000 (5,000,000) ※shaft
revolutions

Rotational Life
Expectancy(at 25℃ )｝Total resistance value variation:
within ± 5％ against initial value
Independent Iinearity tolerance:
within 150％ of speci f ied value
Noise: within 500Ω E.N.R.

Total resistance value variation:
within ± 5％ against initial value
Independent Iinearity tolerance:
within 150％ of speci f ied value
Noise: within 500Ω E.N.R.

Total resistance value variation:
within ± 5％ against initial value
Independent Iinearity tolerance:
within 150％ of speci f ied value
Output smoothness:
5-turn… … 0.2％ against input voltage
10-turn … 0.1％ against input voltage

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.
5. Mark※applies only for model 22HHPM series.

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