Tork Craft Replacement Pilot Drill Bit For 915 Series Tct Hole Saws

Drill bit diameter: Ø6.35mm
Drill bit: TCT (Tungsten Carbide Tipped)

Application:

The drill bit is a replacement pilot drill bit for Tungsten Carbide Tipped
(TCT) hole saws.

Replacing the pilot drill bit:

1. Use an Allen key (TC17016) or in some cases a slot-head screwdriver to undo
   the grub screw securing the pilot drill bit in the mandrel.
2. Replace the pilot drill bit by aligning the flat side on the shank with
   the grub screw.
3. Tighten the grub screw. Make sure the pilot drill bit is secured.
4. In some cases it would be necessary to remove the hole saw from the mandrel
   to replace the pilot drill bit.

Mandrel replacement pilot drill bits:

• Ø6.35 x 115mm (extra long) for bi-metal hole saws -
  
  TC00001
• ø6.35 x 70mm for bi-metal hole saws -
  
  TC00002
• Tungsten Carbide Tipped (TCT) series hole saws -
  
  TC00003
• Carbide grit hole saws -
  
  TC00004
• Diamond coated hole saws -
  
  TC00006

Using a hole saw:

To use a hole saw, you need the following accessories:

• A portable drill or stationary drill with a 3 jaw chuck.
• The correct mandrel and pilot drill for the material being drilled into.
• The necessary safety equipment. Safety goggles, gloves and hearing
  protection.

IMPORTANT:
For the best results and for safety reasons, use the recommended rotation
speed for the material being drilled into.

For longer hole saw life, use the following instructions:

1. Use the correct mandrel for the diameter hole saw being used.
2. Use pin-type mandrels for hole saws larger than Ø32mm. When
   mounting the mandrel, lift the pins up and then screw the mandrel down into
   the hole saw as far as it will go. It is important that the pins holes are
   securely located in the hole saw.
3. Use the correct rotation speed. If the speed is too high or too low will
   have an effect on the cutting edge on the hole saw and decrease the life
   expectancy.
4. Clear away wood chips or iron filings frequently to prevent the hole saw
   from overheating.
5. Always apply the necessary pressure for the intended use. Too much
   pressure can destroy the teeth when cutting in metals.
6. Keep the drill going straight to avoid binding the hole saw.

TIP:
When using a hole saw for wood, clamp an off-cut backing board on the
back to prevent tear out when the hole saw exits the material. The backing board
also prevents materials from flexing.

Rotation speed of hole saws (rpm):