Operational Advice

Diamond Blades

1. Check blade is suitable for material being cut
    
    
2. Check blade shaft is not grooved or damaged
   
   
3. Check blade fits tightly on shaft
   
   
4. Check shaft and wheel bearings are in good condition
   
   
5. Check blade clamps are not damaged, dirty or of unequal diameters
   
   
6. Ensure drive pin is used, if fitted to machine
   
   
7. When mounting part worn blade, check that it is in good condition, free from cracks, and that bore hole is not out of round
   
   
8. Check blade is mounted correctly for direction of cut
   
   
9. If blade slows excessively whilst in use, re-dress on abrasive material. DO NOT FORCE BLADE as this may result in damage to the blade or machine
   
   
10. Do not generate excessive heat on blade. When dry cutting, remove blade occasionally from cut to allow it to cool
    
    
11. Check blade is operating at correct speed (see chart below)
    
    
12. If wet cutting, ensure adequate supply of water to both sides of the blade (see chart below)

Diamond Core Bits

1. Check the core bit specification is suitable for the material being drilled
   
   
2. Check that the core bit has no excessive play when fitted to drive shaft or adaptors
   
   
3. Ensure the correct operating speed is being used for the diameter of the core bit (refer to chart below)
   
   
4. If using a drilling rig, ensure this is anchored firmly and that there is no excessive play in the motor carriage
   
   
5. When fitting a part used core bit, check that the barrel is in good condition, with no cracks or dents
   
   
6. If the core bit slows excessively when in use, check the following:
   
   a) rotation speed (refer to chart below)
   b) if wet drilling, check flow rate – too much water can be as detrimental as too little (refer to chart below)
   
   
7. When dry drilling, do not force the core bit as this will generate excessive heat on the segments, and may result in damage to the core bit and can cause the motor to labour, also resulting in damage to the drilling machine. As a general rule you should drill as fast as the core bit and motor will allow without undue pressure
    

The above Recommended Operating Speeds (ROS) for dry and wet drilling are intended as a guide, and are only attainable when using highly variable hydraulic motors. Electric motors will usually have up to 3 speeds. In this event, choose the speed setting that is closest to the ROS.

Note:

1. The larger the diameter or the harder the material, the lower the speed.

2. The smaller the diameter or the softer the material, the higher the speed.