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Home>Technology>Differences between Turning and Grinding Locknuts
Differences between Turning and Grinding Locknuts |
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Axial Run-out |
Turning Locknut
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Grinding Locknut
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Pitch Diameter |
Big tolerance
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Small tolerance
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Surface Thread |
Turning (compare figure) |
Grinding (compare figure) |
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Clearly indicate that the tuning locknut has roughened thread surface. When set forces,
it will reduce preload and even locknut loosens. |
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Thread Precision |
Precision level of every part are related to the locknut safety. |
(1)Mountain Shape (60º)
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(2)Pitch
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(3)Half angle vertical degree
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Turning Locknut |
Grinding Locknut |
Axial Run-out |
0.005mm |
0.002mm |
Precision of Pitch Dia. |
ISO 4H |
higher than ISO 4H |
Material |
SCM440 |
SCM440 |
Treatment Hardness |
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HRC28°~32°(high tensile strength) |
Surface Roughness |
turning |
grinding |
Thread Precision |
low |
high |
Price |
low |
high |
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