BNK Set

Finished Shaft Ends
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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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Shaft O.D. (mm)
Lead (mm)
Stroke Range (mm)
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Stroke (mm)
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Axial Clearance
Accuracy
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Subtotal: $0.00
    • 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 dynamic load rating C0a (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 axis
      D
      Runout of the nut circumference
      H
      Flange perpen-dicularity
      I
      Runout of the thread groove sruface
      J
      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 dynamic load rating C0a (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 axis
      D
      Runout of the nut circumference
      H
      Flange perpen-dicularity
      I
      Runout of the thread groove sruface
      J
      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 dynamic load rating C0a (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 axis
      D
      Runout of the nut circumference
      H
      Flange perpen-dicularity
      I
      Runout of the thread groove sruface
      J
      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 dynamic load rating C0a (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 axis
      D
      Runout of the nut circumference
      H
      Flange perpen-dicularity
      I
      Runout of the thread groove sruface
      J
      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 dynamic load rating C0a (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 axis
      D
      Runout of the nut circumference
      H
      Flange perpen-dicularity
      I
      Runout of the thread groove sruface
      J
      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 dynamic load rating C0a (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 axis
      D
      Runout of the nut circumference
      H
      Flange perpen-dicularity
      I
      Runout of the thread groove sruface
      J
      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   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
      16 16   RR : Labyrinth seal G2 : 0 to 0.02 mm   C7
      20 20
      25

    Note 1: See the Specifications tab to see standard sizes available.