• WON ST Compact Ball Spline WSPFL Series, Long Round Flange Type
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WON ST Compact Ball Spline WSPFL Series, Long Round Flange Type

WON ST Compact Ball Spline WSPFL Series, Long Round 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 round flange nut.

Key features

  • Long round 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 round 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)
WSPFL5 Shaft diameter d: 5 mm | Nut outer diameter D: 10 mm | Nut length L1: 26 mm | Flange diameter D1: 23 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
WSPFL6 Shaft diameter d: 6 mm | Nut outer diameter D: 12 mm | Nut length L1: 29.8 mm | Flange diameter D1: 25 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
WSPFL8 Shaft diameter d: 8 mm | Nut outer diameter D: 15 mm | Nut length L1: 36.7 mm | Flange diameter D1: 28 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
WSPFL10 Shaft diameter d: 10 mm | Nut outer diameter D: 19 mm | Nut length L1: 47 mm | Flange diameter D1: 36 mm | Bolt PCD: 28 mm | C (dynamic): 2842 N | C0 (static): 4018 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
WSPFL12 Shaft diameter d: 12 mm | Nut outer diameter D: 21 mm | Nut length L1: 53.1 mm | Flange diameter D1: 38 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
WSPFL15 Shaft diameter d: 13.6 mm | Nut outer diameter D: 23 mm | Nut length L1: 65 mm | Flange diameter D1: 40 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
WSPFL20 Shaft diameter d: 18.2 mm | Nut outer diameter D: 30 mm | Nut length L1: 71 mm | Flange diameter D1: 46 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
WSPFL25 Shaft diameter d: 22.6 mm | Nut outer diameter D: 37 mm | Nut length L1: 84 mm | Flange diameter D1: 57 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
WSPFL30 Shaft diameter d: 27.2 mm | Nut outer diameter D: 45 mm | Nut length L1: 98 mm | Flange diameter D1: 65 mm | Bolt PCD: 54 mm | C (dynamic): 21291 N | C0 (static): 31587 N | T (dynamic torque): 319.84 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 WSPFL Series, Long Round Flange Type

Brand WON ST·Ball Splines

Available part numbers (9)

WSPFL5, WSPFL6, WSPFL8, WSPFL10, WSPFL12, WSPFL15, WSPFL20, WSPFL25, WSPFL30

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
WSPFL5Shaft diameter d: 5 mm | Nut outer diameter D: 10 mm | Nut length L1: 26 mm | Flange diameter D1: 23 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
WSPFL6Shaft diameter d: 6 mm | Nut outer diameter D: 12 mm | Nut length L1: 29.8 mm | Flange diameter D1: 25 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
WSPFL8Shaft diameter d: 8 mm | Nut outer diameter D: 15 mm | Nut length L1: 36.7 mm | Flange diameter D1: 28 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
WSPFL10Shaft diameter d: 10 mm | Nut outer diameter D: 19 mm | Nut length L1: 47 mm | Flange diameter D1: 36 mm | Bolt PCD: 28 mm | C (dynamic): 2842 N | C0 (static): 4018 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
WSPFL12Shaft diameter d: 12 mm | Nut outer diameter D: 21 mm | Nut length L1: 53.1 mm | Flange diameter D1: 38 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
WSPFL15Shaft diameter d: 13.6 mm | Nut outer diameter D: 23 mm | Nut length L1: 65 mm | Flange diameter D1: 40 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
WSPFL20Shaft diameter d: 18.2 mm | Nut outer diameter D: 30 mm | Nut length L1: 71 mm | Flange diameter D1: 46 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
WSPFL25Shaft diameter d: 22.6 mm | Nut outer diameter D: 37 mm | Nut length L1: 84 mm | Flange diameter D1: 57 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
WSPFL30Shaft diameter d: 27.2 mm | Nut outer diameter D: 45 mm | Nut length L1: 98 mm | Flange diameter D1: 65 mm | Bolt PCD: 54 mm | C (dynamic): 21291 N | C0 (static): 31587 N | T (dynamic torque): 319.84 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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