Spherical washers
Straight bolt tensioning for longer endurance


Spherical washers from SKF are designed to create an exact, parallel plane between the bolt head and the face of the nut. These washers automatically adjust and compensate for the angular deviation between the planes and prevent the bolt from bending.
Product characteristics:
- Automatically compensates for angular errors
- Evenly distributed bolt tension
- Reduces bolt fatigue from bending bolts
- Improved bolt stretch possible due to increased clamping length
- Surface treated for protection in humid and harsh environments
- Available in standard and low-profile (LP) versions
SKF Spherical washers | |
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A = Bent bolt | B = Straight bolt |
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C = Spot facing | D = Spot facing not required |
Industrial spherical washers (DIN) consist of a conical ring and a spherical ring resulting in a line contact with a limited load capacity. SKF Spherical Washers consist of convex and concave rings to create a perfect mating surface and have a high load bearing capacity as result.
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C = Line contact | D = Spherical contact |
Spherical Washers - Standard
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Metric
Dimensions Designation D (mm) d (mm) H (mm) SMSW 16 -ASTR 33 17 60 SMSW 20 -ASTR 42 23 60 SMSW 24 -ASTR 47 27 60 SMSW 27 -ASTR 52 30 60 SMSW 30 -ASTR 56 34 60 SMSW 36 -ASTR 67 40 60 SMSW 42 -ASTR 82 46 60 SMSW 48 -ASTR 92 52 60 Please contact vibracon@skf.com, your local SKF Authorised Distributor or SKF sales representative for support, customization or more information about SKF Vibracon. -
Imperial
Spherical Washers - Low profile
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Metric
Dimensions Designation D (mm) d (mm) H (mm) SMSW 16LPAST 33 17 20 SMSW 20LPAST 42 23 22 SMSW 24LPAST 47 27 24 SMSW 27LPAST 52 30 26 SMSW 30LPAST 56 34 28 SMSW 36LPAST 67 40 30 SMSW 42LPAST 82 46 34 Please contact vibracon@skf.com, your local SKF Authorised Distributor or SKF sales representative for support, customization or more information about SKF Vibracon. -
Imperial