Abrasive Wheels Training Certificate Work Rest Adjustment and Operating Techniques

Question 1

What is the maximum recommended gap between the work rest and an abrasive wheel on a bench or pedestal grinder?

Accepted Answer

3 mm

Answer

1 mm

Answer

2 mm

Answer

6 mm

Question 2

When should the work rest on a grinding machine be re-adjusted?

Accepted Answer

Whenever the gap exceeds the safe limit due to wheel wear

Answer

Only when the wheel is replaced

Answer

Once per week regardless of wheel condition

Answer

Only when instructed by a supervisor

Question 3

At what height should the work rest be set relative to the centre of the abrasive wheel?

Accepted Answer

At or slightly above centre

Answer

Significantly below centre

Answer

Exactly at centre height only

Answer

Significantly above centre

Question 4

What is the primary reason for keeping the work rest as close to the abrasive wheel as possible?

Accepted Answer

To prevent the workpiece from being drawn between the wheel and rest

Answer

To improve grinding speed and efficiency

Answer

To reduce heat generation during grinding

Answer

To extend the working life of the abrasive wheel

Question 5

Who should carry out adjustments to the work rest on a pedestal grinder?

Accepted Answer

Only an appointed, competent person

Answer

Any trained operator at the start of each shift

Answer

The operator whenever they notice the gap has increased

Answer

The manufacturer's representative only

Question 6

What must be done BEFORE adjusting the work rest on a grinding machine?

Accepted Answer

Isolate and lock off the machine to prevent accidental start-up

Answer

Put on additional eye protection

Answer

Inform all workers in the surrounding area

Answer

Confirm the wheel speed rating on the spindle

Question 7

After re-adjusting the work rest following wheel wear, what must be verified before resuming work?

Accepted Answer

The gap between the work rest and wheel is within the safe maximum

Answer

The wheel speed matches the machine's rated speed

Answer

The coolant reservoir is adequately topped up

Answer

The operator's PPE is in serviceable condition