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SAFETY RECOMMENDATIONS: 
SPINDLE MOUNTED PRODUCTS
FOR GRINDING
WITH A STRAIGHT GRINDER

a hand holding a grinder with a spindle mounted point grinding a metallic tube

 
a straight grinder with a rubber bond         a straight grinder with a resinoid bond

 
Terminology: Spindle-mounted wheels can be bonded, coated and non-woven abrasives. They are fitted to the machine by means of a spindle cemented into the wheel.

Spindle-mounted wheels improperly used can be very dangerous: wheels can run at speeds up to 63 m/s on straight grinders and can eject parts at speeds up to 227 km/h (140 mph) in case of breakage. FEPA has designed this page to provide the essential safety recommendations for use of mounted points and wheels on straight grinders.

Abrasive products

 
These recommendations focus on spindle-mounted products for grinding with straight grinders. 

3 vitrified bonds for grinding
Vitrified bond

3 resinoid bonds for grinder
Resinoid bond

3 rubber bonds of different shapes
Rubber bond

3 flap wheels of different types and size for grinding
Flap wheels

4 abrasives sleeves for grinding machines
Abrasives sleeves

Safety recommendations for the use of spindle-mounted wheels for grinding with straight grinders

FEPA general safety principles

cover page of the safety recommendations leaflet for the use of abrasives products

Dos & Don’ts for these products

 
Soon available
 
 

 
 
 
 
 

 

 

 

 

 

What is a safe product? What should I look for?

 
FEPA recommends that only products conforming to EN Standards and marked as such should be used.

Resinoid wheels not bearing an EN number may not conform the highest safety standards.

Before selecting resinoid wheels, ensure that the expiry date has not been exceeded. 

All wheels should be examined carefully for damage or defects before fitting on the machine.

 

How should I handle and store the wheels?

 
All abrasives wheels are fragile. They should be handled with care.

Wheel should be stored in their packaging or in trays, avoiding damp and frost or wide variations in temperature.

Use the oldest resinoid wheels (on “first in, first out” basis).
 

 

 

 

 

 

How should I fit the wheel on the machine?


Follow carefully the instructions given in the machine handbook. 

Ensure that at least 10mm of the spindle is engaged in the collet or chuck.

Tighten only with the tool supplied with the machine.

Ensure the wheel is properly gripped to prevent slippage, but do not tighten with excessive force. 

Run all wheels after fitting for at least 30 seconds at operating speed keeping behind the guard in case the wheel breaks.

Refer to the FEPA recommended mounting check list.

How should I protect myself?

 
FEPA recommends the use of following personal protective equipment (often written PPE) : 

Eye protection
Ear protection (ear sets)
Hand protection (gloves)
Lung protection (dust mask, also called respirator)

Never remove the protective machine guard and make sure it is properly adjusted to deflect debris away from you.

Ensure that no other person is at risk, especially near the machine while working.
 

 

How should I handle the wheel after use?

 
Before storing the machine or transporting it to another location, always remove the wheel and store it as recommended. 

Always carefully examine the wheel for damage or defects, and destroy and discard if damaged. 

When disposing of worn out or defective wheels, it is recommended to damage them to prevent someone from removing them from waste and re-using them.
  

 

 

 

 

 

How can I get proper training?

 
It is a legal requirement for all employees involved in the use of abrasives wheels to be properly trained and also re-trained on a regular basis. They should consult their employer if they have not received this training.

The wheel manufacturer or supplier can advise you on suitable accredited training providers. 

As a private consumer, you should read carefully the safety information found in:

The grinding machine handbook 
The FEPA general safety principles leaflet (see above)
The FEPA safety leaflet for this specific application (soon available)

 

a rubber bond mounted on a straight grinder and grinding a metallic tube


This website is intended to give information on safe use of abrasives in compliance with European standards, and not to give advice on product selection.
You should read the information given on the product or its packaging to determine suitability. For any specific question, contact the retailor who supplied you the product.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
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