• WON ST Compact Ball Spline WSPKL Series, Long Square Flange Type
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WON ST Compact Ball Spline WSPKL Series, Long Square Flange Type

WON ST Compact Ball Spline WSPKL Series, Long Square Flange Type

Compact ball spline with a precision-ground Gothic-arch spline shaft and ball nut that carries radial and moment loads and transmits rotational torque with one nut; long square flange nut.

Key features

  • Long square flange nut for easy installation and higher load capacity
  • Two rows of Gothic-arch grooves with 4-point ball contact
  • Transmits torque while bearing radial and moment loads with one nut
  • Preload possible for zero rotational clearance and high rigidity
  • Rated load about ten times that of a ball bushing of equal shaft diameter

Specifications

Nut type Long square flange nut
Shaft type options S solid / H hollow
Clearance options CL no preload / CM standard / CT light preload
Precision options Normal / H precision / P super
Material options Standard / M stainless (nut and shaft)
WSPKL5 Shaft diameter d: 5 mm | Nut outer diameter D: 10 mm | Nut length L1: 26 mm | Flange diameter D1: 23 mm | Flange width B: 18 mm | Bolt PCD: 17 mm | C (dynamic): 882 N | C0 (static): 1176 N | T (dynamic torque): 2.646 N·m | T0 (static torque): 3.528 N·m | Nut mass: 12 g | Shaft mass: 14.9 g/100mm | Max. shaft length: 200 mm
WSPKL6 Shaft diameter d: 6 mm | Nut outer diameter D: 12 mm | Nut length L1: 29.8 mm | Flange diameter D1: 25 mm | Flange width B: 20 mm | Bolt PCD: 19 mm | C (dynamic): 1078 N | C0 (static): 1470 N | T (dynamic torque): 3.626 N·m | T0 (static torque): 5.194 N·m | Nut mass: 19.5 g | Shaft mass: 19 g/100mm | Max. shaft length: 300 mm
WSPKL8 Shaft diameter d: 8 mm | Nut outer diameter D: 15 mm | Nut length L1: 36.7 mm | Flange diameter D1: 28 mm | Flange width B: 22 mm | Bolt PCD: 22 mm | C (dynamic): 1764 N | C0 (static): 2450 N | T (dynamic torque): 8.33 N·m | T0 (static torque): 11.76 N·m | Nut mass: 34.1 g | Shaft mass: 39 g/100mm | Max. shaft length: 500 mm
WSPKL10 Shaft diameter d: 10 mm | Nut outer diameter D: 19 mm | Nut length L1: 47 mm | Flange diameter D1: 36 mm | Flange width B: 28 mm | Bolt PCD: 28 mm | C (dynamic): 2842 N | C0 (static): 4010 N | T (dynamic torque): 16.66 N·m | T0 (static torque): 23.52 N·m | Nut mass: 70 g | Shaft mass: 60.5 g/100mm | Max. shaft length: 600 mm
WSPKL12 Shaft diameter d: 12 mm | Nut outer diameter D: 21 mm | Nut length L1: 53.1 mm | Flange diameter D1: 38 mm | Flange width B: 30 mm | Bolt PCD: 30 mm | C (dynamic): 3234 N | C0 (static): 4802 N | T (dynamic torque): 21.56 N·m | T0 (static torque): 33.32 N·m | Nut mass: 91.8 g | Shaft mass: 87.5 g/100mm | Max. shaft length: 800 mm
WSPKL15 Shaft diameter d: 13.6 mm | Nut outer diameter D: 23 mm | Nut length L1: 65 mm | Flange diameter D1: 40 mm | Flange width B: 31 mm | Bolt PCD: 32 mm | C (dynamic): 6370 N | C0 (static): 11564 N | T (dynamic torque): 48.02 N·m | T0 (static torque): 86.24 N·m | Nut mass: 127.5 g | Shaft mass: 111 g/100mm | Max. shaft length: 1000 mm
WSPKL20 Shaft diameter d: 18.2 mm | Nut outer diameter D: 30 mm | Nut length L1: 71 mm | Flange diameter D1: 46 mm | Flange width B: 35 mm | Bolt PCD: 38 mm | C (dynamic): 9310 N | C0 (static): 15092 N | T (dynamic torque): 93.10 N·m | T0 (static torque): 150.92 N·m | Nut mass: 218 g | Shaft mass: 202 g/100mm | Max. shaft length: 1000 mm
WSPKL25 Shaft diameter d: 22.6 mm | Nut outer diameter D: 37 mm | Nut length L1: 84 mm | Flange diameter D1: 57 mm | Flange width B: 43 mm | Bolt PCD: 47 mm | C (dynamic): 15394 N | C0 (static): 23191 N | T (dynamic torque): 192.92 N·m | T0 (static torque): 289.88 N·m | Nut mass: 371 g | Shaft mass: 310 g/100mm | Max. shaft length: 1200 mm
WSPKL30 Shaft diameter d: 27.2 mm | Nut outer diameter D: 45 mm | Nut length L1: 98 mm | Flange diameter D1: 65 mm | Flange width B: 50 mm | Bolt PCD: 54 mm | C (dynamic): 21291 N | C0 (static): 31587 N | T (dynamic torque): 319.87 N·m | T0 (static torque): 473.81 N·m | Nut mass: 680 g | Shaft mass: 450 g/100mm | Max. shaft length: 1200 mm
Ball SplinesWON ST
9 product codes available in this family
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WON ST Compact Ball Spline WSPKL Series, Long Square Flange Type

Brand WON ST·Ball Splines

Available part numbers (9)

WSPKL5, WSPKL6, WSPKL8, WSPKL10, WSPKL12, WSPKL15, WSPKL20, WSPKL25, WSPKL30

How to order

Send the WON ST part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codeSpec
WSPKL5Shaft diameter d: 5 mm | Nut outer diameter D: 10 mm | Nut length L1: 26 mm | Flange diameter D1: 23 mm | Flange width B: 18 mm | Bolt PCD: 17 mm | C (dynamic): 882 N | C0 (static): 1176 N | T (dynamic torque): 2.646 N·m | T0 (static torque): 3.528 N·m | Nut mass: 12 g | Shaft mass: 14.9 g/100mm | Max. shaft length: 200 mm
WSPKL6Shaft diameter d: 6 mm | Nut outer diameter D: 12 mm | Nut length L1: 29.8 mm | Flange diameter D1: 25 mm | Flange width B: 20 mm | Bolt PCD: 19 mm | C (dynamic): 1078 N | C0 (static): 1470 N | T (dynamic torque): 3.626 N·m | T0 (static torque): 5.194 N·m | Nut mass: 19.5 g | Shaft mass: 19 g/100mm | Max. shaft length: 300 mm
WSPKL8Shaft diameter d: 8 mm | Nut outer diameter D: 15 mm | Nut length L1: 36.7 mm | Flange diameter D1: 28 mm | Flange width B: 22 mm | Bolt PCD: 22 mm | C (dynamic): 1764 N | C0 (static): 2450 N | T (dynamic torque): 8.33 N·m | T0 (static torque): 11.76 N·m | Nut mass: 34.1 g | Shaft mass: 39 g/100mm | Max. shaft length: 500 mm
WSPKL10Shaft diameter d: 10 mm | Nut outer diameter D: 19 mm | Nut length L1: 47 mm | Flange diameter D1: 36 mm | Flange width B: 28 mm | Bolt PCD: 28 mm | C (dynamic): 2842 N | C0 (static): 4010 N | T (dynamic torque): 16.66 N·m | T0 (static torque): 23.52 N·m | Nut mass: 70 g | Shaft mass: 60.5 g/100mm | Max. shaft length: 600 mm
WSPKL12Shaft diameter d: 12 mm | Nut outer diameter D: 21 mm | Nut length L1: 53.1 mm | Flange diameter D1: 38 mm | Flange width B: 30 mm | Bolt PCD: 30 mm | C (dynamic): 3234 N | C0 (static): 4802 N | T (dynamic torque): 21.56 N·m | T0 (static torque): 33.32 N·m | Nut mass: 91.8 g | Shaft mass: 87.5 g/100mm | Max. shaft length: 800 mm
WSPKL15Shaft diameter d: 13.6 mm | Nut outer diameter D: 23 mm | Nut length L1: 65 mm | Flange diameter D1: 40 mm | Flange width B: 31 mm | Bolt PCD: 32 mm | C (dynamic): 6370 N | C0 (static): 11564 N | T (dynamic torque): 48.02 N·m | T0 (static torque): 86.24 N·m | Nut mass: 127.5 g | Shaft mass: 111 g/100mm | Max. shaft length: 1000 mm
WSPKL20Shaft diameter d: 18.2 mm | Nut outer diameter D: 30 mm | Nut length L1: 71 mm | Flange diameter D1: 46 mm | Flange width B: 35 mm | Bolt PCD: 38 mm | C (dynamic): 9310 N | C0 (static): 15092 N | T (dynamic torque): 93.10 N·m | T0 (static torque): 150.92 N·m | Nut mass: 218 g | Shaft mass: 202 g/100mm | Max. shaft length: 1000 mm
WSPKL25Shaft diameter d: 22.6 mm | Nut outer diameter D: 37 mm | Nut length L1: 84 mm | Flange diameter D1: 57 mm | Flange width B: 43 mm | Bolt PCD: 47 mm | C (dynamic): 15394 N | C0 (static): 23191 N | T (dynamic torque): 192.92 N·m | T0 (static torque): 289.88 N·m | Nut mass: 371 g | Shaft mass: 310 g/100mm | Max. shaft length: 1200 mm
WSPKL30Shaft diameter d: 27.2 mm | Nut outer diameter D: 45 mm | Nut length L1: 98 mm | Flange diameter D1: 65 mm | Flange width B: 50 mm | Bolt PCD: 54 mm | C (dynamic): 21291 N | C0 (static): 31587 N | T (dynamic torque): 319.87 N·m | T0 (static torque): 473.81 N·m | Nut mass: 680 g | Shaft mass: 450 g/100mm | Max. shaft length: 1200 mm

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