
T-21
FEATURES
Carbon resistive element.
High mechanical endurance.
Upon request:
Detents
Stereo matching
Switch
Nut & washer
21mm Carbon
Potentiometer
MECHANICAL SPECIFICATIONS
Mechanical rotation angle:
Electrical rotation angle:
Torque:
310° ± 5°
290° ± 20°
0.5 to 1.5 Ncm.
(0.7 to 2.1 in-oz)
Stop torque:
> 80 Ncm. ( > 112 in-oz)
HOW TO ORDER
STANDARD OPTIONAL EXTRAS
T-21
Series
T-21
Models
Metal shaft
A
D
T
S
(See note 1)
NOTE: The information contained here should be used for reference purposes only.
ISO TS 16949 / ISO 14001
A
Terminals
C=
Solder Lugs
H=
Horiz. PCB
L=
Horiz. in Line PCB
V=
Vert. PCB
Plastic shaft
X
W
Y
Z
NOTES:
C
M04
01
A223
Bushings
Shaft ØA Bushing Ø B Length C
Code
01
4
M7 x 0.75
06
6
07
08
Shafts
Metal
Plastic
M04
P01
M06
M07
P12
M08
M11
M16
(See note 2)
(1) MODELS : Models D y T are not available with "V" terminals.
(2) SHAFTS: The codes indicate diameter and length. M08: Code for the double potentiometer.
(3) BUSHINGS ; The codes types 11, 12 and 13 have an antirotation lug (at 90°CW). Plastic shaft and double model are only available with Ø6 bushing.
(4) VALUE:
(5)
(6) Shafts special length:
(7) DETENTS : - Not available in models with plastic shaft X, W, Y, Z.
(8) Stereo matching: Only available in tandem models and upon request.
(9)
(10)
09
11
12
13
14
00
Tolerance (special), upon request.
Only for special length and plain shafts (not knurled).
Flatted and slotted shafts, etc. will need drawing.
Shaft M08 (T-21D) with other length, order under special drawing number.
Recomendation : Shaft L > 60 ..... bushing C = 19
- Detents and switch are not compatible.
SWITCHES :
F1 = The code is "F01"
Plastic shafts are only available if they are code P10, P11 or P12
F2 = (Only with metal shaft) Indicate the corresponding I-21 switch code.
Switch option not available with antilog taper.
M10 x 0.75
6
M10 x 0.75
6
M10 x 0.75
6
M10 x 0.75
6 "U"
3/8" x 32 h.
6 "U"
3/8" x 32 h.
6.35 "U"
3/8" x 32 h.
6.35
M10 x 0.75
For models pot. X,W, S
(See note 3)
Code:
10 1
In models "D" and "T" with different values, order under special drawing number.
Two types of switches are offered: F1 and F2.
6
7
9
12
19
9
12
9
9
Number of zeros
2 first digits of the value.
95
ELECTRICAL SPECIFICATIONS
Range of values (*)
Tolerance (*):
Max. Voltage:
Nominal Power 50°C (122°F)
0.25 W (lin) 0.12 W (no lin)
Taper (*) (Log. & Alog. only Rn > 1K)
Residual resistance:
Equivalent Noise Resistance:
Operating temperature**:
* Others upon request
2020
Taper
A= linear
B= Log.
C= Alog.
(See note 10)
Other tapers
on request
Shafts spec. length
Value
2020= +/-20%
3030= +/-30%
(See note 4)
+7%
Code :Example :
-5%
Example: Shaft Ø6 L= 24.5
250 VDC (lin) 150 VDC (no lin)
0
XX.X
(See note 6)
Detents
01P= 1 detent
11P= 11 detents
41P= 41 "
(See note 7)
Switch
Tolerance
(See note 5)
07 05
F01 = Mod. F1
212 = Mod. F2
" "
" "
744 = Mod. F2
(See note 9)
negative tolerance
positive tolerance
M06 ....... 24.5
± 20%
± 30%
(see power rating curve)
Lin ; Log; Alog.
3
25°C + 70°C (13°F + 158°F)
** Up to 85°C depending on application
Stereo matching
3D = 3dB
4D = 4dB
6D = 6dB
(See note 8)
Nut & washer
-TA =
Loose nut & washer
MTA= Assembled nut &
washer
MT- = Assembled nut
-T- = Loose nut
special length
shafts

HOW TO ORDER CUSTOM DRAWING
STANDARD OPTIONS
Shaft length 0 standard
T-21 A C
This way of ordering should be used for options which are not included
in the "How to order" standard and optional extras.
+ DRAWING NUMBER
(Max. 16 digits)
Detents Without
Stereo matching Only for model "T" and upon request
Switch No switch
Nut & washer Without nut and washer
MODELS WITH METALIC SHAFTS
T-21 A T-21 T
M 10 x 0.75
6
2.5
9
+
0.5
60
10
T-21 D
M 10 x 0.75
6
4
2.5
9
+
0.5
60
50
+
0.5
10
20
S
E
21.5
A
7
26
6
A = Initial
S = Wiper
E = Final
7
26
T-21 S
6
21.5
..................................
.........................................
............................................
............................
................................
M 10 x 0.75
9
+
0.5
60
4
4
5
+
60
0.5
9
10
20
7
26
21.5
7
8
P
I
H
E
R
S
E
26
A
Ñ
A
P
0.7
22.5
MODELS WITH PLASTIC SHAFTS
46
+
45
1
7
4
5
0.5
9
1.2
0.7
P
I
H
E
R
22.5
2.5
9
+
0.5
10
T-21 X
0.1
6
T-21 Y
0.1
6
12
M 10 x 0.75
12
TERMINALS
T-21 C
10
2
T-21 W
+
0.1
7
1.5
26
A
Ñ
A
P
S
E
9
4
4.6
22.5
7.5
1
0.1
7
6
1.2
P
I
H
E
R
5
9
46
12
+
0.5
0.7
E
22.5
26
A
Ñ
A
P
S
T-21 Z
7
7
M 10 x 0.75
1.2
26
0.1
6
2.5
1.2
26
12
+
2.5
0.5
46
55
+
0.1
1
21.5
+
0.1
1.3
4
2.5
21.5
1.3
T-21 H
9
2.5
10
10
22.3
16
10
T-21 L
2.5
www.piher.net
10
20
55
+
0.1
1
4
16
21.5
1.3
55
55
+
0.1
10
T-21 V
55
4
2.5
16
2.5
13.5
10
55
10.1
1.3
+
0.1
+
0.1
96

PLASTIC SHAFTS
T-21 X/Y without Switch
T-21 X / Y S / I
T-21 X T-21 Y
L = 2
L = 10
L = 16
L = 26
L = 36
L = 46
L = 15
L = 25
L = 35
L = 45
METALIC SHAFTS
T-21Y w/Sw F01 T-21 W/Z without Switch
T-21 Y C / I F01 T-21 W / Z S / I
C
OD
E
/
/
P01
P02
P03
P04
P05
P06
T-21 Y COD
L = 16
L = 25
L = 46
P10
P11
P12
E
T-21 W T-21 Z COD
L = 26
L = 26
L = 36
L = 46
L =
L = 36
26
L = 46
L =
P07
P08
P09
E
PLAIN SHAFT
A
KNURLED SHAFT
18 tooth
O6
1
+
L
BLA
C
0.5
A L
4
6
6.35
4/6
50/60
COD
40
60
60
M04
M06
M07
M08
L A B C
15
20
25
30
35
40
2
2
4
4
4
4
6
10
12
12
12
12
E
FLATTED SHAFT
COD
E
7
11
14
14
14
14
M11
M12
M13
M14
M15
M16
SLOTTED SHAFT
BUSHINGS
STANDARD NON ROTARY PAWL
2
B (Thread)
A
C9.5
A B C
CODE
11
12
13
6.35
A
B (Thread)
C10
2.5
21.5
CODE
A B C
01
06
07
08
09
6.35
14
4
6
6
6
6
M7 x 0.75
M10 x 0.75
M10 x 0.75
M10 x 0.75
M10 x 0.75
M10 x 0.75
6
7
9
12
19
9
UNDER DRAWING
A
L
A
L
21.5
3/8" x 32 h.
6
3/8" x 32 h.
6
3/8" x 32 h.
O
5
+
O
90
+
0.5
O
5
+
O
0
+
0.5
+
0.1
10.1
3
4
10.7
9
12
9
DETENTS TAPERS
M 10 x 0.75
6
60
2.5
9
+
0.5
13.5
21.5
7
26
TESTS
ELECTRICAL LIFE
MECHANICAL LIFE* :
TEMPERATURE COEFFICIENT
THERMAL CYCLING
DAMP HEAT
VIBRATION (for each plane X,Y,Z)
NOTE: Out of range values may not comply these results.
(*) only applicable to values 1K. For lower values please consult.
1.000 h. 50°C; 0.25 W
25.000 (10-15 CPM)
25°C; +70°C
16 h. @ 85°C; 2h. @ 25°C
500 h. 40°C 95% HR
2 h. @ 10 Hz 55 Hz.
PACKAGING
Boxes of 150 / 200 pieces (160 x 110 x 85 mm.)
www.piher.net
97
POWER RATING CURVE
100
80
C
60
% Rn
40
20
% Mechanical rotation
A
B
AE
0
25 50 75 100
A: Lin.
B: Log.
C: Alog.
TYPICAL VARIATIONS
±5 %
±3 % (Rn < 1 M)
±300 ppm (Rn <100 K)
±2.5 %
±5 %
2 %
±
100
(%)
W
%
40
%
50 70
C

SWITCH F1
22
11. 4
5.9
16.5
MECHANICAL & ELECTRICAL
SPECIFICATIONS
OPERATING ANGLE
OPERATING TORQUE
MAXIMUM AXIAL CHARGE
NOMINAL CURRENT
CONTACT RESISTANCE
TEST VOLTAGE (DIELECTRIC STRENGTH)
SWITCH F2
SWITCH RATING
CONTACT RESISTANCE
DIELECTRIC STRENGTH
INSULATION RESISTANCE
MECHANICAL SPECIFICATIONS F 2
MECHANICAL SPECIFICATIONS
OPERATING ANGLE (ROTARY)
PUSH / PUSH OPERATING TRAVEL
PUSH / PULL OPERATING TRAVEL
OPERATING TORQUE (ROTARY)
OPERATING FORCE (Push/Push ; Push/Pull)
MECHANICAL LIFE
STOP TORQUE
F 1
50° ±5°
3 -7 Ncm (4.2 - 9.8 in-oz)
80 N; 17 pounds
1A; 250 VAC
25m
2000 V (50 Hz)
F 2ELECTRICAL SPECIFICATIONS
2 or 4A; 250 VAC
25 m
2000 V
100 M
35° ± 5°
4 mm.
2.5 mm.
2 to 9 Ncm. (2.8 to 12.7oz/in)
4 to 7 N (14 to 27 oz)
10.000 cycles
> 100 Ncm. (142 oz/ in)
T- 21 ... F2
4.5
6
2.5
A
S
E
2.5
Cod.: 712
714
612
614
2.5
Terminals pot.
2.5
Cod.: 732
734
632
634
PUSH / PUSH
M10 x 0.75
2.5
+
0.5
60
PUSH / PULL
17.5 5
2
17.5 5
5
2
23
3
56
23
6
3
PUSH
2.5
9
O1.5
SPST
O1.5
Terminals switch
DPST
12.5 5
10
29.5
55
55
5
2.5
2.5
Cod.: 722
724
622
624
2.5
2.5
5
2
ESA
21.5
123
5
12.5 5
2
456
123
12.5 5
5
6
DPDT
4
1
3
+
0.1
1
1
3
Cod.: 742
SPDT
O1.5
O1.5
4
16
55
55
744
642
644
www.piher.net
98

I-21 HOW TO ORDER
(only switch)
STANDARD
I- 21 M0 6 0
Series
I-21
(See note 1)
Code
2
3
6
7
Switch model
push/ push switch
push/ pull switch
push/ push switch
push/ pull switch
2
Code
1
2
3
4
Terminals
Solder lugs
Solder lugs
PCB
PCB
Switch
model
1
2
1
2
3
Circuits
1
1
2
2
Code
2
4
4
Current
2 A
4 A
Shafts
M04; L= 40
M06; L= 60
(See note 2)
Voltage
250 V
250 V
Shaft spec. length
NOTES:
(1)
When only the switch is ordered (without potentiometer), it will be called "I -21" followed by the respective code.
(2)
The shaft and bushings for "I -21" are:
COD.
M04
M06
(3)
Only for special length and plain shaft (not knurled).
Example: E: Ø6 L= 24.5
A
4
6
B
M7 x 0.75
M10 x 0.75
L
40
60
M06 24.5
special length
Flatted and slotted shafts, etc. will need drawing.
OPTIONAL
XX.X
(See note 3)
Nut & washer
- TA = Loose nut & washer
MTA = Assembled nut & washer
MT - = Assembled nut
- T - = Loose nut
HOW TO ORDER CUSTOM DRAWING
21 ...
PUSH / PUSH
2.5
L 60
PUSH / PULL
(Max. 16 digits)
PUSH
M10 x 0.75
+
9
0.5
+ DRAWING NUMBER
I-
21
This way of ordering should be used for options which are not included
in the "How to order" standard and optional extras.
I-
4.5
Ø6
NUT & WASHER
0.7
7.5
2.5 13
STANDARD OPTIONS
Shaft length See note 2
Nut & washer Without nut
511. 5 5
456
2.5
26
0.7
9.8 10.5
...........................................
....................................
55
+
0.1
1
41
4
16
21.5
2.5 14
and washer
0.72.5 10
M7 x 0.75
14
PACKAGING
Boxes of 100 pieces ( 160 x 110 x 85 mm.).
www.piher.net
W 3/8 x 32
99
18
M10 x 0.75
18