Page 200 - oxcatalog-2019

A guide to diamond blades

Receipt, handling & storage of diamond blades

Before mounting or use, each item should be individually examined to see if it has any sign of damage or defect. Any damaged items,
or any giving rise to doubt, should not be used.
Handling
Any sudden shock loading – such as dropping, spanner slip during mounting and similar events – may cause damage which is difficult to
detect. All items should be carefully examined and if any doubt exists, they should not be used. Large or heavy saws should not be rolled on
their periphery.
Storage
OX diamond products are expensive and valuable and for this reason, in addition to safety requirements, all wheels should be stored in the
packing in which they are supplied or in suitable racks, bins or compartmented drawers.
Mounting
The person who mounts diamond products on to the machine should be a trained and competent person. Such products should only be
mounted on the machine for which they are intended. The wheel should fit freely on the spindle and should not require force to mount it on the
spindle. Wheels, saws, backplates and flanges must be free from burrs and foreign matter, and must run free in all true respects.
Bushings
These should be sufficient width in relation to blade width and flange recess depth to prevent the possibility of them becoming detached from
the effective part of the bore. Blade fitted with bushings must not have the bush projecting beyond the side of the blade. Flanges must clamp
on the blade hub and not on the bush. BLOTTERS should not be used on metal blades.
Flanges
All flange surfaces which come into contact with the blade must be true and free from burrs and foreign matter. Where two flanges are used
(the rear flange being fixed to the machine spindle) they must be of equal diameter, have equal bearing surfaces properly recessed or under-
cut. Where single flanges are used in conjunction with securing bolts or devices, the flange must be flat and not recessed, with the surface
bearing on to the blade and fixed to the machine spindle. Clamping nuts should be tightened sufficiently to hold the blade securely but not
excessively to cause damage to the blade.
CAUTION: a newly mounted blade and a blade being re-mounted should run free for a short time before it is used and everyone should stand
clear. The working or cutting surface of the blade must run true. To make sure, with the power switched off, turn the blade by hand, using a dial
test indicator, or similar instrument.

Protection devices

Safety guards
These serve two purposes: firstly to avoid as far as possible operators coming into contact with a rotating blade, saw etc., and
secondly, to contain the blade fragments should it burst or portions become
detached. A blade should always be used with a guard secured in position and properly adjusted.
Safety goggles
As the cutting operation causes flying particles, eye protection is of the utmost importance. Therefore YOU MUST wear goggles when
using any sawing machine. Goggles should be approved to BSEN166 Grade 1.
Protective clothing
Protective clothing – safety aprons, gloves, gauntlets or face masks – should be worn as required by the nature of the cutting
operation. Well-designed protective clothing will allow the operator to work more
efficiently and safely.
Operating precautions – Training of operators
Machine operators should be trained in the safe use of cutting machines and blades.
Dust extraction
To prevent excessive dust whilst diamond cutting, dust exhaust systems are now available at attach to the angle grinder. These
systems are designed to ensure that the maximum level of dust in the atmosphere does not exceed the recommended limits.

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