Jowitt Grinding Wheels - Manufacturers of specialist abrasive wheels, discs and segments

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Amada Togu

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Jowitt
Bridge Way
Broombank Road
Chesterfield Trading Estate
Chesterfield
S41 9QJ
United Kingdom
Tel: +44 (0)1246 572230
Fax: +44 (0)1246 572249
web: www.jowitt.com
e-mail: sales@jowitt.com

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Mounting
Inserted Nut Discs and Inserted Nut Cylinders

Page 2

7. Check the thickness of the backplate – the plate should be of a suitable thickness to support the wheel correctly during the grinding operation without distortion. (See table below)
8. If re-grinding is carried out, care should be taken to ensure that the dimension ‘X’ (see diagram below) is not ground so small that when mounting the disc, the screws could touch the bottom of the hole. If this did occur, the wheel nut insert may be pulled out.

9. All countersunk or counter bored holes should be uniform to allow for interchange of the fixing screws.
10. Check that the thread nomenclature of the screws conforms to the nut inserts in the wheel. The screws should be of sufficient length to properly engage the threads of the inserts but not too long that they touch the bottom of the hole.

Wheel Diameter (mm)	Minimum Backplate Thickness (mm)
203.2 to 355.6 inclusive	12.70
381 to 457.2 inclusive	15.88
482.6 to 660.4 inclusive	19.05
685.8 to 914.4 inclusive	22.23
939.8 to 1016.0 inclusive	25.40
1041.4 to 1828.8 inclusive	28.58