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Ball Screw specifications |
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Lead (mm)
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20 |
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BCD (mm) |
20.75 |
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Thread minor diameter (mm)
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17.5 |
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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 1.8 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)
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7.0 |
11.1 |
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Basic static load rating C0a(kN)
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12.3 |
24.7 |
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Preload torque (N·m)
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2.0×10-3¡9.8×10-2 |
- |
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Spacer ball
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1:1 |
None |
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| Ball Screw model No.
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Stroke
|
Screw-shaft length
|
Screw-shaft
longitudinal-axis
runout
D
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Nut
circumferential
runout
H
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Flange
perpen-
dicularity
I
|
Shaft
thread
runout
J
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| L1 |
L2 |
L3 |
| BNK 2020-3.6G0+520LC5Y |
300 |
410 |
435 |
520 |
0.050 |
0.015 |
0.011 |
0.012 |
| BNK 2020-3.6G2+520LC7Y |
0.075 |
0.030 |
0.018 |
0.014 |
| BNK 2020-3.6G0+620LC5Y |
400 |
510 |
535 |
620 |
0.050 |
0.015 |
0.011 |
0.012 |
| BNK 2020-3.6G2+620LC7Y |
0.075 |
0.030 |
0.018 |
0.014 |
| BNK 2020-3.6G0+720LC5Y |
500 |
610 |
635 |
720 |
0.065 |
0.015 |
0.011 |
0.012 |
| BNK 2020-3.6G2+720LC7Y |
0.090 |
0.030 |
0.018 |
0.014 |
| BNK 2020-3.6G0+820LC5Y |
600 |
710 |
735 |
820 |
0.085 |
0.015 |
0.011 |
0.012 |
| BNK 2020-3.6G2+820LC7Y |
0.120 |
0.030 |
0.018 |
0.014 |
| BNK 2020-3.6G0+920LC5Y |
700 |
810 |
835 |
920 |
0.085 |
0.015 |
0.011 |
0.012 |
| BNK 2020-3.6G2+920LC7Y |
0.120 |
0.030 |
0.018 |
0.014 |
| BNK 2020-3.6G0+1020LC5Y |
800 |
910 |
935 |
1020 |
0.110 |
0.015 |
0.011 |
0.012 |
| BNK 2020-3.6G2+1020LC7Y |
0.150 |
0.030 |
0.018 |
0.014 |
| BNK 2020-3.6G0+1120LC5Y |
900 |
1010 |
1035 |
1120 |
0.110 |
0.015 |
0.011 |
0.012 |
| BNK 2020-3.6G2+1120LC7Y |
0.150 |
0.030 |
0.018 |
0.014 |
| BNK 2020-3.6G0+1220LC5Y |
1000 |
1110 |
1135 |
1220 |
0.110 |
0.015 |
0.011 |
0.012 |
| BNK 2020-3.6G2+1220LC7Y |
0.150 |
0.030 |
0.018 |
0.014 |
| BNK 2020-3.6G0+1320LC5Y |
1100 |
1210 |
1235 |
1320 |
0.150 |
0.015 |
0.011 |
0.012 |
| BNK 2020-3.6G2+1320LC7Y |
0.190 |
0.030 |
0.018 |
0.014 |
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