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To meet the space-saving requirement, this type of Ball Screw has a standardized screw shaft and a ball
screw nut. The ends of the screw shaft are standardized to fit the corresponding support unit.
View specifications and model number coding
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Ball screw specification
Screw shaft diameter (mm)
15
Lead (mm)
10
BCD (mm)
15.75
Thread minor diameter (mm)
12.5
Number of circuits
2×2.8
Clearance symbol
GT
G2
Axial clearance
0.005 or less
0.02 or less
Basic dynamic load rating Ca (kN)
14.3
Basic static load rating C0 a (kN)
27.9
Rigidity (N/µm)
350
Circulation method
End Cap
Applicable fixed side support unit
EK12 , FK12
Applicable support side support unit
EF12 , FF12
Applicable nut bracket
MC1408
Model No.
Stroke
Screw shaft length
Ball screw specifications
Lead angle accuracy
L1
L2
L3
Runout of the screw shaft axisD
Runout of the nut circumferenceH
Flange perpen-dicularityI
Runout of the thread groove srufaceJ
Representative travel distance error
Fluctuation
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
BNK1510-5.6GT+321LC5Y
150
239
254
321
0.035
0.015
0.011
0.012
±0.023
0.018
BNK1510-5.6G2+321LC7Y
150
239
254
321
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+371LC5Y
200
289
304
371
0.035
0.015
0.011
0.012
±0.023
0.018
BNK1510-5.6G2+371LC7Y
200
289
304
371
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+421LC5Y
250
339
354
421
0.035
0.015
0.011
0.012
±0.025
0.02
BNK1510-5.6G2+421LC7Y
250
339
354
421
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+471LC5Y
300
389
404
471
0.035
0.015
0.011
0.012
±0.025
0.02
BNK1510-5.6G2+471LC7Y
300
389
404
471
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+521LC5Y
350
439
454
521
0.035
0.015
0.011
0.012
±0.027
0.02
BNK1510-5.6G2+521LC7Y
350
439
454
521
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+571LC5Y
400
489
504
571
0.035
0.015
0.011
0.012
±0.027
0.02
BNK1510-5.6G2+571LC7Y
400
489
504
571
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+621LC5Y
450
539
554
621
0.035
0.015
0.011
0.012
±0.03
0.023
BNK1510-5.6G2+621LC7Y
450
539
554
621
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+671LC5Y
500
589
604
671
0.035
0.015
0.011
0.012
±0.03
0.023
BNK1510-5.6G2+671LC7Y
500
589
604
671
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+721LC5Y
550
639
654
721
0.035
0.015
0.011
0.012
±0.035
0.025
BNK1510-5.6G2+721LC7Y
550
639
654
721
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+771LC5Y
600
689
704
771
0.035
0.015
0.011
0.012
±0.035
0.025
BNK1510-5.6G2+771LC7Y
600
689
704
771
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+871LC5Y
700
789
804
871
0.035
0.015
0.011
0.012
±0.035
0.025
BNK1510-5.6G2+871LC7Y
700
789
804
871
0.035
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK1510-5.6GT+971LC5Y
800
889
904
971
0.035
0.015
0.011
0.012
±0.04
0.027
BNK1510-5.6G2+971LC7Y
800
889
904
971
0.12
0.03
0.018
0.014
Travel distance: ±0.05mm/300mm
AFB-LF is the default grease. For more detailed specifications, please download the Product Catalog with the link in the Downloads section on this page.
Ball screw specification
Screw shaft diameter (mm)
15
Lead (mm)
20
BCD (mm)
15.75
Thread minor diameter (mm)
12.5
Number of circuits
2×1.5
Clearance symbol
GT
G2
Axial clearance
0.005 or less
0.02 or less
Basic dynamic load rating Ca (kN)
8
Basic static load rating C0 a (kN)
15.8
Rigidity (N/µm)
200
Circulation method
End Cap
Applicable fixed side support unit
EK12 , FK12
Applicable support side support unit
EF12 , FF12
Applicable nut bracket
MC1408
Model No.
Stroke
Screw shaft length
Ball screw specifications
Lead angle accuracy
L1
L2
L3
Runout of the screw shaft axisD
Runout of the nut circumferenceH
Flange perpen-dicularityI
Runout of the thread groove srufaceJ
Representative travel distance error
Fluctuation
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
BNK1520‑3G2+371LC7Y
200
286
304
371
0.055
0.03
0.018
0.014
Travel distance: ±0.05mm/300mm
BNK1520‑3G2+421LC7Y
250
336
354
421
0.06
0.03
0.018
0.014
Travel distance: ±0.05mm/300mm
BNK1520‑3G2+571LC7Y
400
486
504
571
0.075
0.03
0.018
0.014
Travel distance: ±0.05mm/300mm
BNK1520‑3G2+771LC7Y
600
686
704
771
0.09
0.03
0.018
0.014
Travel distance: ±0.05mm/300mm
BNK1520‑3G2+871LC7Y
700
786
804
871
0.12
0.03
0.018
0.014
Travel distance: ±0.05mm/300mm
AFB-LF is the default grease. For more detailed specifications, please download the Product Catalog with the link in the Downloads section on this page.
Ball screw specification
Screw shaft diameter (mm)
16
Lead (mm)
16
BCD (mm)
16.65
Thread minor diameter (mm)
13.7
Number of circuits
2×1.8
Clearance symbol
GT
G2
Axial clearance
0.005 or less
0.02 or less
Basic dynamic load rating Ca (kN)
7.1
Basic static load rating C0 a (kN)
14.3
Rigidity (N/µm)
230
Circulation method
End Cap
Applicable fixed side support unit
EK12 , FK12
Applicable support side support unit
EF12 , FF12
Applicable nut bracket
MC1408
Model No.
Stroke
Screw shaft length
Ball screw specifications
Lead angle accuracy
L1
L2
L3
Runout of the screw shaft axisD
Runout of the nut circumferenceH
Flange perpen-dicularityI
Runout of the thread groove srufaceJ
Representative travel distance error
Fluctuation
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
BNK1616-3.6GT+321LC5Y
150
234
254
321
0.035
0.015
0.011
0.012
±0.023
0.018
BNK1616-3.6G2+321LC7Y
150
234
254
321
0.055
0.03
0.018
0.014
Travel distance: ±0.05mm/300mm
BNK1616-3.6GT+371LC5Y
200
284
304
371
0.055
0.03
0.018
0.014
±0.023
0.018
BNK1616-3.6GT+421LC5Y
250
334
354
421
0.06
0.03
0.018
0.014
±0.025
0.02
BNK1616-3.6GT+521LC5Y
350
434
454
521
0.075
0.03
0.018
0.014
±0.027
0.02
BNK1616-3.6GT+621LC5Y
450
534
554
621
0.075
0.03
0.018
0.014
±0.03
0.023
BNK1616-3.6GT+671LC5Y
500
584
604
671
0.09
0.03
0.018
0.014
±0.03
0.023
BNK1616-3.6GT+771LC5Y
600
684
704
771
0.09
0.03
0.018
0.014
±0.035
0.025
BNK1616-3.6GT+871LC5Y
700
784
804
871
0.12
0.03
0.018
0.014
±0.035
0.025
BNK1616-3.6G2+971LC7Y
800
884
904
971
0.12
0.03
0.018
0.014
Travel distance: ±0.05mm/300mm
AFB-LF is the default grease. For more detailed specifications, please download the Product Catalog with the link in the Downloads section on this page.
Ball screw specification
Screw shaft diameter (mm)
20
Lead (mm)
10
BCD (mm)
21
Thread minor diameter (mm)
16.4
Number of circuits
1×2.5
Clearance symbol
GT
G2
Axial clearance
0.005 or less
0.02 or less
Basic dynamic load rating Ca (kN)
11.1
Basic static load rating C0 a (kN)
22
Rigidity (N/µm)
210
Circulation method
Return Pipe
Applicable fixed side support unit
EK15 , FK15
Applicable support side support unit
EF15 , FF15
Applicable nut bracket
MC2010
Model No.
Stroke
Screw shaft length
Ball screw specifications
Lead angle accuracy
L1
L2
L3
Runout of the screw shaft axisD
Runout of the nut circumferenceH
Flange perpen-dicularityI
Runout of the thread groove srufaceJ
Representative travel distance error
Fluctuation
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
BNK2010-2.5RRGT+499LC5Y
300
389
414
499
0.04
0.015
0.011
0.012
±0.025
0.02
BNK2010-2.5RRG2+499LC7Y
300
389
414
499
0.04
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2010-2.5RRGT+599LC5Y
400
489
514
599
0.04
0.015
0.011
0.012
±0.027
0.02
BNK2010-2.5RRG2+599LC7Y
400
489
514
599
0.04
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2010-2.5RRGT+699LC5Y
500
589
614
699
0.04
0.015
0.011
0.012
±0.03
0.023
BNK2010-2.5RRG2+699LC7Y
500
589
614
699
0.04
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2010-2.5RRGT+799LC5Y
600
689
714
799
0.04
0.015
0.011
0.012
±0.035
0.025
BNK2010-2.5RRG2+799LC7Y
600
689
714
799
0.04
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2010-2.5RRGT+899LC5Y
700
789
814
899
0.04
0.015
0.011
0.012
±0.035
0.025
BNK2010-2.5RRG2+899LC7Y
700
789
814
899
0.04
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2010-2.5RRGT+999LC5Y
800
889
914
999
0.04
0.015
0.011
0.012
±0.04
0.027
BNK2010-2.5RRG2+999LC7Y
800
889
914
999
0.04
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2010-2.5RRGT+1099LC5Y
900
989
1014
1099
0.04
0.015
0.011
0.012
±0.04
0.027
BNK2010-2.5RRG2+1099LC7Y
900
989
1014
1099
0.04
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2010-2.5RRGT+1199LC5Y
1000
1089
1114
1199
0.04
0.015
0.011
0.012
±0.046
0.03
BNK2010-2.5RRG2+1199LC7Y
1000
1089
1114
1199
0.04
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2010-2.5RRGT+1299LC5Y
1100
1189
1214
1299
0.04
0.015
0.011
0.012
±0.046
0.03
BNK2010-2.5RRG2+1299LC7Y
1100
1189
1214
1299
0.04
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
AFB-LF is the default grease. For more detailed specifications, please download the Product Catalog with the link in the Downloads section on this page.
Ball screw specification
Screw shaft diameter (mm)
20
Lead (mm)
20
BCD (mm)
20.75
Thread minor diameter (mm)
17.5
Number of circuits
2×1.8
Clearance symbol
GT
G2
Axial clearance
0.005 or less
0.02 or less
Basic dynamic load rating Ca (kN)
11.1
Basic static load rating C0 a (kN)
24.7
Rigidity (N/µm)
290
Circulation method
End Cap
Applicable fixed side support unit
EK15 , FK15
Applicable support side support unit
EF15 , FF15
Applicable nut bracket
MC2020
Model No.
Stroke
Screw shaft length
Ball screw specifications
Lead angle accuracy
L1
L2
L3
Runout of the screw shaft axisD
Runout of the nut circumferenceH
Flange perpen-dicularityI
Runout of the thread groove srufaceJ
Representative travel distance error
Fluctuation
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
BNK2020-3.6GT+520LC5Y
300
410
435
520
0.05
0.015
0.011
0.012
±0.027
0.02
BNK2020-3.6G2+520LC7Y
300
410
435
520
0.05
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2020-3.6GT+620LC5Y
400
510
535
620
0.05
0.015
0.011
0.012
±0.03
0.023
BNK2020-3.6G2+620LC7Y
400
510
535
620
0.05
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2020-3.6GT+720LC5Y
500
610
635
720
0.05
0.015
0.011
0.012
±0.03
0.023
BNK2020-3.6G2+720LC7Y
500
610
635
720
0.05
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2020-3.6GT+820LC5Y
600
710
735
820
0.05
0.015
0.011
0.012
±0.035
0.025
BNK2020-3.6G2+820LC7Y
600
710
735
820
0.05
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2020-3.6GT+920LC5Y
700
810
835
920
0.05
0.015
0.011
0.012
±0.04
0.027
BNK2020-3.6G2+920LC7Y
700
810
835
920
0.05
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2020-3.6GT+1020LC5Y
800
910
935
1020
0.05
0.015
0.011
0.012
±0.04
0.027
BNK2020-3.6G2+1020LC7Y
800
910
935
1020
0.05
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2020-3.6GT+1120LC5Y
900
1010
1035
1120
0.05
0.015
0.011
0.012
±0.046
0.03
BNK2020-3.6G2+1120LC7Y
900
1010
1035
1120
0.05
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2020-3.6GT+1220LC5Y
1000
1110
1135
1220
0.05
0.015
0.011
0.012
±0.046
0.03
BNK2020-3.6G2+1220LC7Y
1000
1110
1135
1220
0.05
0.015
0.011
0.012
Travel distance: ±0.05mm/300mm
BNK2020-3.6GT+1320LC5Y
1100
1210
1235
1320
0.05
0.015
0.011
0.012
±0.046
0.03
BNK2020-3.6G2+1320LC7Y
1100
1210
1235
1320
0.19
0.03
0.018
0.014
Travel distance: ±0.05mm/300mm
AFB-LF is the default grease. For more detailed specifications, please download the Product Catalog with the link in the Downloads section on this page.
Ball screw specification
Screw shaft diameter (mm)
25
Lead (mm)
20
BCD (mm)
26
Thread minor diameter (mm)
17.5
Number of circuits
2×1.8
Clearance symbol
GT
G2
Axial clearance
0.005 or less
0.02 or less
Basic dynamic load rating Ca (kN)
16.7
Basic static load rating C0 a (kN)
38
Rigidity (N/µm)
360
Circulation method
End Cap
Applicable fixed side support unit
EK20 , FK20
Applicable support side support unit
EF20 , FF20
Model No.
Stroke
Screw shaft length
Ball screw specifications
Lead angle accuracy
L1
L2
L3
Runout of the screw shaft axisD
Runout of the nut circumferenceH
Flange perpen-dicularityI
Runout of the thread groove srufaceJ
Representative travel distance error
Fluctuation
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
BNK2520-3.6GT+751LC5Y
500
610
640
751
0.055
0.015
0.011
0.013
±0.03
0.023
BNK2520-3.6G2+751LC7Y
500
610
640
751
0.055
0.015
0.011
0.013
Travel distance: ±0.05mm/300mm
BNK2520-3.6GT+851LC5Y
600
710
740
851
0.055
0.015
0.011
0.013
±0.035
0.025
BNK2520-3.6G2+851LC7Y
600
710
740
851
0.055
0.015
0.011
0.013
Travel distance: ±0.05mm/300mm
BNK2520-3.6GT+1051LC5Y
800
910
940
1051
0.055
0.015
0.011
0.013
±0.04
0.027
BNK2520-3.6G2+1051LC7Y
800
910
940
1051
0.055
0.015
0.011
0.013
Travel distance: ±0.05mm/300mm
BNK2520-3.6GT+1251LC5Y
1000
1110
1140
1251
0.055
0.015
0.011
0.013
±0.046
0.03
BNK2520-3.6G2+1251LC7Y
1000
1110
1140
1251
0.055
0.015
0.011
0.013
Travel distance: ±0.05mm/300mm
BNK2520-3.6GT+1451LC5Y
1200
1310
1340
1451
0.055
0.015
0.011
0.013
±0.054
0.035
BNK2520-3.6G2+1451LC7Y
1200
1310
1340
1451
0.055
0.015
0.011
0.013
Travel distance: ±0.05mm/300mm
BNK2520-3.6GT+1651LC5Y
1400
1510
1540
1651
0.055
0.015
0.011
0.013
±0.054
0.035
BNK2520-3.6G2+1651LC7Y
1400
1510
1540
1651
0.055
0.015
0.011
0.013
Travel distance: ±0.05mm/300mm
BNK2520-3.6GT+1851LC5Y
1600
1710
1740
1851
0.055
0.015
0.011
0.013
±0.065
0.04
BNK2520-3.6G2+1851LC7Y
1600
1710
1740
1851
0.055
0.015
0.011
0.013
Travel distance: ±0.05mm/300mm
AFB-LF is the default grease. For more detailed specifications, please download the Product Catalog with the link in the Downloads section on this page.
Model
Screw shaft outer diameter
Lead(in mm)
No. of circuits*1
Seals
Clearance
Shaft length(in mm)*1
Accuracy
Standard stock symbol
BNK
15
10
-
5.6
Â
GT
+
321L
C5
Y
BNK
15
10
Various
No symbol : No seal
GT : 0 to 0.005 mm
Length in millimeters then "L"
C5
Y
Â
16
16
Â
RR : Labyrinth seal
G2 : 0 to 0.02 mm
Â
C7
Â
20
20
Â
25
Note 1: See the Specifications tab to see standard sizes available.