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Ball Screw specifications |
Lead (mm)
|
8 |
BCD (mm) |
14.75 |
Thread minor diameter (mm)
|
11.2 |
Threading direction/ no. of threaded grooves
|
Right-hand, 1 |
No. of circuits |
1 row X 2.5 turns
|
Clearance symbol
|
G0 |
GT |
G2 |
Axial clearance (mm) |
0 |
0.005 Max |
0.02 Max |
Basic dynamic load rating Ca(kN)
|
4.3 |
6.9 |
Basic static load rating C0a(kN)
|
5.8 |
11.5 |
Preload torque (N·m)
|
2.0×10-3¡7.8×10-2 |
- |
Spacer ball
|
1:1 |
None |
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Ball Screw model No.
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Stroke
|
Screw-shaft length
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Screw-shaft longitudinal-axis runout D
|
Nut circumferential runout H
|
Flange perpen- dicularity I
|
Shaft thread runout J
|
L1 |
L2 |
L3 |
BNK 1408-2.5RRG0+321LC5Y |
150 |
239 |
254 |
321 |
0.035 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+321LC7Y |
0.055 |
0.030 |
0.018 |
0.014 |
BNK 1408-2.5RRG0+371LC5Y |
200 |
289 |
304 |
371 |
0.035 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+371LC7Y |
0.055 |
0.030 |
0.018 |
0.014 |
BNK 1408-2.5RRG0+421LC5Y |
250 |
339 |
354 |
421 |
0.040 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+421LC7Y |
0.060 |
0.030 |
0.018 |
0.014 |
BNK 1408-2.5RRG0+471LC5Y |
300 |
389 |
404 |
471 |
0.040 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+471LC7Y |
0.060 |
0.030 |
0.018 |
0.014 |
BNK 1408-2.5RRG0+521LC5Y |
350 |
439 |
454 |
521 |
0.050 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+521LC7Y |
0.075 |
0.030 |
0.018 |
0.014 |
BNK 1408-2.5RRG0+571LC5Y |
400 |
489 |
504 |
571 |
0.050 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+571LC7Y |
0.075 |
0.030 |
0.018 |
0.014 |
BNK 1408-2.5RRG0+621LC5Y |
450 |
539 |
554 |
621 |
0.050 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+621LC7Y |
0.075 |
0.030 |
0.018 |
0.014 |
BNK 1408-2.5RRG0+671LC5Y |
500 |
589 |
604 |
671 |
0.065 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+671LC7Y |
0.090 |
0.030 |
0.018 |
0.014 |
BNK 1408-2.5RRG0+721LC5Y |
550 |
639 |
654 |
721 |
0.065 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+721LC7Y |
0.090 |
0.030 |
0.018 |
0.014 |
BNK 1408-2.5RRG0+771LC5Y |
600 |
689 |
704 |
771 |
0.065 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+771LC7Y |
0.090 |
0.030 |
0.018 |
0.014 |
BNK 1408-2.5RRG0+871LC5Y |
700 |
789 |
804 |
871 |
0.085 |
0.015 |
0.011 |
0.012 |
BNK 1408-2.5RRG2+871LC7Y |
0.120 |
0.030 |
0.018 |
0.014 |
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