Metal
Shaft
Rotary
Potentiometers
38
Slide
Potentiometers
Trimmer
Potentiometers
Multi Control
Devices
Position Sensors
Insulated
Shaft
Knob
Operating
27mm Size Metal Shaft Potentiometer
RK27 Series
High-grade potentiometer featuring good control feel and superior features.
Items Specifications
Total resistance tolerance ±20％
Maximum operating voltage 30V AC
Total rotational angle 300±3°
Rotational torque 5 to 35 mN・m
Operating life 15,000 cycles
Operating temperature range −10℃to ＋70℃
Typical Specifications
Recommended Products List
Number of
resistor
elements
Mounting
direction
Shaft
type
Length of
the shaft
（mm）
Center
detent
Total
resistance
（kΩ）
Resistance
taper
Products No.
Minimum
packing unit
（pcs.）
Drawing
No.
Single-unit
Dual-unit
Horizontal
type
Slotted
Flat
25
20
25
20
25
31
Without
100 15A
RK2711120026
RK271111001T
RK27112A00AK
RK27112A00CC
RK27112A0A16
RK27112A00B9
100
1
2
3
These highgrade potentiometers offer comfortable operation
and possess high, precise features(gang error,resistance
taper, etc.), ideal for audio applications.
●
Features
Level controls for high grade audio sets
Controls for audio mixing console
●
●
Applications
For product specifications, see P.39
For other detailed specifications, see P.48, 49
Additional product specifications in response to those not included in the above recommended products are also
available. For inquiries, contact our sales department.
Note
Metal
Shaft
Rotary
Potentiometers
39
Slide
Potentiometers
Trimmer
Potentiometers
Multi Control
Devices
Position Sensors
Insulated
Shaft
Knob
Operating
For resistance taper, see P.40, 226
27mm Size Metal Shaft Potentiometer
Product Specifications
In addition to the recommended products, the following specifications can also be accommodated.
Products Specification
Type Model Mounting height
（mm）
Detent variety Gang error
Single-shaft,
single-unit RK27111
Single-shaft,
dual-unit RK27112
Single-shaft,
quad-unit RK27114
12.5
Center
11
21
31
41
−60dB to 0dB
within 3dB
−80dB to −60dB
within 5dB
possible
depending on total
resistance and taper.
Total Resistance Variety
Total resistance（kΩ） 10 20 50 100 250
Resistance Taper
Resistance taper 15A 3B
Dimensions of Shaft
1 S
lotted type Unit : mm
2
Flat type Unit : mm
M8G0.75
L1
R1
7
ø6
C1
60˚
4.5
Shaft shown in full
CCW position
M8G0.75
7
C0.5
L1
ø6
1
1.6
Not specified slotting angle
L1
15
20
25
30
R1
7
12
12
12
L1
15
20
25
30
Metal
Shaft
Rotary
Potentiometers
40
Slide
Potentiometers
Trimmer
Potentiometers
Multi Control
Devices
Position Sensors
Insulated
Shaft
Knob
Operating
27mm Size Metal Shaft Potentiometer
Orders other than recommended products
Specify orders for varieties that are not listed in the Recommended Product List, referring to the following example.
Sample part number
R K 2 7 1 1 2 A S 2 5 C 0 A 1 0 4
Detent
Code
C0
21
Detent
without
21
Code
31
41
Detent
31
41
Model type
Code
111
12A
Model type
Single unit
Dual unit for vol.
Shaft type
Code
F
Shaft type
Flat
SSlotted
Length of the shaft（L1）（mm）
Code
15
Length of the
shaft
15
20 20
Code
25
30
Length of the
shaft
25
30
Resistance taper
Code
A
V
Resistance
taper
15A
3B
Total resistance
Code
502
103
Total resistance
（kΩ）
5
10
Total resistance
（kΩ）
50
100
Code
503
104
203 20 250
254
Shows the specification recommended by us.
Note
100
90
80
70
60
50
40
30
20
10
0100908070605040302010
Rotation travel (%) Term."1" Term."3"
Output volt.across term.1-2
Input volt. across term. 1-3 G 100 (%)
V(vol.control)(3B)
J
J
A(15A)
Metal
Shaft
Rotary
Potentiometers
41
Slide
Potentiometers
Trimmer
Potentiometers
Multi Control
Devices
Position Sensors
Insulated
Shaft
Knob
Operating
27mm Size Metal Shaft Potentiometer RK27 Series
No.
1
2
Model Style
PC board mounting
hole dimensions
（Viewed from mounting side）
710
27
15.3
412.5
12
24.5
1
ø3
2M8G0.75 3
2
1
R1
Not specified
slotting angle
ø6
1
1.6
25
C0.5
ø6
1
1.6
710
27
25.3
412.5
12
24.5
1
ø3
2M8G0.75
C0.5 3
2
1
R1R2
Not specified
slotting angle
L1
5
55
3-ø1.2 holes
Mounting
surface
5
55
6-ø1.2 holes
10
Mounting
surface
3
ø6
24.5
712
25.3 L1
M8×0.75
C1
2
R2 R1
ø3
1
123
12.5
12
4
60ﾟ
27
10
4.5
Shaft shown in full
CCW position
510
55
6–ø1.2 holes
Mounting
surface
Dimensions
Single-shaft, single-unit
RK27111
Single-shaft, dual-unit
RK27112
Single-shaft, dual-unit
RK27112
Unit : mm
20 25
L1
20 25
L1
Metal
Shaft
Rotary
Potentiometers
49
Slide
Potentiometers
Trimmer
Potentiometers
Multi Control
Devices
Position Sensors
Insulated
Shaft
Knob
Operating
Metal Shaft Potentiometers
Products Specifications
Model
Items
RK20B RK25T RK271 RK501
Operating temperature range −10℃to ＋105℃ −10℃to ＋60℃−10℃to ＋70℃
±20％
0.06W 0.05W 0.1W
20V DC 5V DC 30V AC
5kΩ≦R＜10kΩ70dB min.
10kΩ≦R＜50kΩ80dB min.
50kΩ≦R＜100kΩ90dB min.
100kΩ≦R 100dB min.
120dB min.
R≦10kΩ20Ωmax.
10kΩ＜R≦50kΩ
30Ωmax.
50kΩ＜R
0.1% or less of
nominal total resistance
100MΩmin. 250V DC 100MΩmin. 500V DC
1 minute 300V AC 1 minute 500V AC
360°
20 to 80
―
100N max.
300±5°
0.5 to 7.5
0.5
300±3°
5 to 35
0.9
13 to 43
1.5
150N max.
10 to 55 to 10Hz / min., the amplitude is 1.5mm for all the frequencies,
in the 3 direction of X, Y and Z and for 2 hours respectively
230±5℃,3±0.5s
350℃or less and within 3 seconds
260±5℃ 4±1s
15,000 cycles 100,000 cycles 15,000 cycles
−10℃for 96h
＋105℃for 96h ＋70℃for 96h
＋40±2℃, 90 to 95％RH for 96h
150V AC
Total
resistance tolerance
Rated power
Maximum
operating voltage
Residual
resistance
Maximum
attenuation
（Volume control）
Insulation
resistance
Voltage proof
Total
rotational angle
Rotational torque
（
mN・m
）
Stopper strength
（
N・m
）
Push-pull strength
Vibration
Solderability
Solder
heat
resistance
Manual
soldering
Dip soldering
（Dip available
products）
Electrical
performance
Mechanical
performance
Endurance Operating life
Cold
Long-term heat
resistance
Moisture
resistance
Environ-
mental test
Metal
Shaft
Rotary
Potentiometers
50
Slide
Potentiometers
Trimmer
Potentiometers
Multi Control
Devices
Position Sensors
Insulated
Shaft
Knob
Operating
Metal Shaft Potentiometers
Attached Parts
These parts are attached to the following products.
Applicable products
RK09L
RK168
RK097
RK271
RK097
RK098
RK163
RK097
RK098
M9
M8
M7
M6
Bearing screw
diameter
Hexagonal nut Flat washer
11
M9G0.75
2
11
M8G0.75
2
2
11
M7G0.75
2
8
M6G0.75
ø14
ø9.1
0.5
ø14
ø8.1
0.5
ø12
ø7.2
0.5
ø10
ø6.2
0.5
Unit : mm
