Pictogram

Applications (Materials)

Metal

Stainless Steel

Cast Iron

Shape Specification System

Depressed center grinding wheels. Available in diameters 100-230mm for hand held machines.

Flat cutting-off wheels Available in diameters 100-400mm for hand held machines and 250-400mm for stationary machines.

Dressed center cutting-off wheels. Available in diameters 100-230mm for hand held machines.

Machines

Cutting with portable machine

Grinding with portable machine

Cutting with stationary machine

Symbols & Designations

Information & Description of the disc

Chopsaw

  • Make sure your saw is in good condition and capable of cutting the stock you are using.

  • A 355mm saw will successfully cut through material about 125 mm thick with the correct blade and support.

  • Check the switch, cord, clamp base, and guards to be sure they are in good condition.

Power

  • Provide suitable power. These saws typically require 15 amps minimum at 240volts

  • You might also choose a ground fault interrupted circuit if available when cutting outdoors or where an electrical short is possible.

Correct Wheel

  • Choose the correct wheel for the material. Thinner abrasive blades cut quickest, but a slightly thicker blade handles abuse better.

Personal Protection Equipment (PPE)

  • Use safety equipment to protect you while cutting. These saws create dust, sparks, and debris, so eye protection, including a face shield, are recommended.

  • Gloves and ear muffs

  • Long pants and sleeved shirts and work boots for additional protection.

Set Up – Chop Saw & Job

  • Set the saw up right. When you are cutting flat bar, set the work in the clamp vertically, so the cut is through a thin layer the whole way.

  • For angle steel, set it on the two edges, so there is no flat to cut through.

  • While using the  chop saw on the ground keep something flat and solid under the saw and then use supports to support the steel.

  • Protect walls or windows or any other equipment. Sparks and debris are discharged at high speeds to the rear of the saw.

Alignment of Job

  • Use a square to test that the face of the disk is square off the steel. Don’t worry if the packers to the right are a bit low. This will allow the cut to open slightly as you cut.

Marking

  • Mark your cuts first. To get a really accurate cut, mark the material with a fine pencil, or a sharp piece of French chalk (if working on black steel).

  • For heavy material that is hard to move, release the clamp lightly, adjust by tapping the end of the material with a hammer until it is spot on.

Improper Clamping

Proper Alignment

Improper Alignment

Block Support

  • Wheel will tend to bend as there will be pressure on its side if there is no block support if the job to be cut is long.

Wheel Care

  • Beware of wasting the wheel

  • Do not overload the machine or apply more pressure than required. Plenty of bright sparks coming out the back is an indication that correct pressure is applied. The noise while cutting should not be much higher than while at idle speed

Machine Maintenance

  • After a saw has been used for a while, metal and disc residue builds up on the inside of the steel guard..

  • Tap the guard with a mallet to dislodge the residue when the machine is switched off.

Stacking

To prevent bending and damage to wheels ensure that the wheels are stacked to a height of 40 cms only and preferably on a pallet to avoid moisture on the floor.