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» Overview flexible shafts
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Speedometer core
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Construction
4 to 6 high tensile strength wires per layer.
Applications
Speedometers, counters, tachographs.
Features
High flexibility, low noise, low vibration.
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| Type shaft | Core
dia-
meter |
Num-
ber of layers |
Min. oper-
ating radius |
Max. RPM | Degrees torsional
deflection | Torsional
breaking
load in
winding
direction
straight shaft | Maximum
dynamic torque
capacity in straight winding direction | Approx.
weight |
| Winding |
Unwinding |
| Inch |
inch | |
inch | |
per foot
per pound inch |
pound inch |
pound inch |
lbs / 100 feet |
| 130-21 |
1/8 |
4 |
3 |
40000 |
30° |
45° |
13 |
3 |
3.0 |
| 150-21 |
5/32 |
4 |
4 |
40000 |
20° |
30° |
22 |
5 |
4.3 |
| 187-25 |
3/16 |
5 |
41/2 |
30000 |
12° |
18° |
50 |
10 |
7.0 |
| Metric |
mm | |
mm |
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per 1 m
at 1 cm kg |
cm kg |
cm kg |
cm kg |
| 3-21 |
3 |
4 |
75 |
40 000 |
120° |
170° |
12 |
3 |
4.5 |
| 4-21 |
4 |
4 |
100 |
40 000 |
75° |
120° |
28 |
6 |
8.0 |
| 5-25 |
5 |
5 |
120 |
30 000 |
45° |
70° |
63 |
12 |
12.5 |
| 6-25 |
6 |
5 |
140 |
25 000 |
30° |
50° |
100 |
23 |
17.0 |
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| Explanations: |
| X |
Last number:
1 for operation in clockwise
(right-hand) direction
2 for operation in counter-clockwise
(left-hand) direction |
| 1) |
Min. bend radius:
The bend radius cannot be smaller than this value. |
| 2) |
Torsional deflection:
Torsional deflection angle over 1 m shaft with
torque of 10 Ncm. |
| 3) |
Breaking torque:
At this load the shaft will break. |
| 4) |
Max. torque:
Values applicable for straight shaft at speeds
of 20% of maximum
rated speed. |
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