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Ball Screw specifications |
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Lead (mm)
|
20 |
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BCD (mm) |
15.75 |
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Thread minor diameter (mm)
|
12.5 |
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Threading direction/
no. of threaded grooves
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Right-hand, 2 |
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No. of circuits |
2 rows X 1.5 turns
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Clearance symbol
|
G0 |
GT |
G2 |
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Axial clearance (mm) |
0 |
0.005 Max |
0.02 Max |
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Basic dynamic load rating Ca(kN)
|
5.1 |
8.0 |
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Basic static load rating C0a(kN)
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7.9 |
15.8 |
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Preload torque (N·m)
|
2.0×10-3¡8.8×10-2 |
- |
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Spacer ball
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1:1 |
None |
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| Ball Screw model No.
|
Stroke
|
Screw-shaft length
|
Screw-shaft
longitudinal-axis
runout
D
|
Nut
circumferential
runout
H
|
Flange
perpen-
dicularity
I
|
Shaft
thread
runout
J
|
| L1 |
L2 |
L3 |
| BNK 1520-3G0+321LC5Y |
150 |
236 |
254 |
321 |
0.035 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+321LC7Y |
0.055 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+371LC5Y |
200 |
286 |
304 |
371 |
0.035 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+371LC7Y |
0.055 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+421LC5Y |
250 |
336 |
354 |
421 |
0.040 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+421LC7Y |
0.060 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+471LC5Y |
300 |
386 |
404 |
471 |
0.040 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+471LC7Y |
0.060 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+521LC5Y |
350 |
436 |
454 |
521 |
0.050 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+521LC7Y |
0.075 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+571LC5Y |
400 |
486 |
504 |
571 |
0.050 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+571LC7Y |
0.075 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+621LC5Y |
450 |
536 |
554 |
621 |
0.050 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+621LC7Y |
0.075 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+671LC5Y |
500 |
586 |
604 |
671 |
0.065 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+671LC7Y |
0.090 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+721LC5Y |
550 |
636 |
654 |
721 |
0.065 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+721LC7Y |
0.090 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+771LC5Y |
600 |
686 |
704 |
771 |
0.065 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+771LC7Y |
0.090 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+871LC5Y |
700 |
786 |
804 |
871 |
0.085 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+871LC7Y |
0.120 |
0.030 |
0.018 |
0.014 |
| BNK 1520-3G0+971LC5Y |
800 |
886 |
904 |
971 |
0.085 |
0.015 |
0.011 |
0.012 |
| BNK 1520-3G2+971LC7Y |
0.120 |
0.030 |
0.018 |
0.014 |
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