Saw Blade Terminology

a1 Rake angle (hook) a6 Front shear angle EXP Expansion slot CSK Countersink hole
a2 Back clearance angle D Diameter T Number of teeth OW Outer wiper slot
a3 Radial side angle B Kerf SP Silencing port IW Inner wiper slot
a4 Tangential side angle E Thickness of saw body KN Key slot (width x depth) P Tooth pitch
a5 Top bevel angle d Bore PIN Pin hole PCD Pitch circle diameter

Saw Blade Speeds

Suggested Cutting Speeds in Metres / Second for TCT Saw Blades According to Material
Softwoods 45 – 90 Raw MDF 50 – 80
Hardwoods 45 – 70 Laminated MDF 60 – 80
Exotic Hardwoods 40 – 65 Rigid Plastics 15 – 50
Raw Particle Board 50 – 80 Soft Plastics 30 – 60
Laminated Particle Board 60 – 80 Pure Aluminium 50 – 80
Plywood 50 – 80 Al – Mg – Cu Alloy / Profiles 50 – 70

Important Notes:

  1. This chart does not include the maximum safe speed.
  2. An industry expert must be consulted for maximum safe speeds.

Optimum saw blade speeds are determined by factors which may include the following:

  • Moisture content of wood products
  • Material feed rate
  • Surface finish required
  • Material abrasion

Optimum blade speed selection may require the assistance of an industry expert.

General Safety

  • Read and retain safety warnings for future reference.
  • Incorrect use may cause serious or fatal injury.
  • Ensure cutting tool/sawblade, when installed, meets OH&S regulations and standards.

Machine Safety

  • Isolate machine at power source before inspecting or changing cutting tool/sawblade.
  • Read machine manufacturer’s instructions before installing or using cutting tool/sawblade.
  • Machine guards and safety features must be functional and according to regulations.
  • Machine specifications, speed and cutting direction must be correct and fit-for-purpose.
  • Only install cutting tool/sawblade to equipment where the blade meets with equipment manufacturer’s specifications.

Cutting Tool Safety

  • Caution must be used when unpacking and transporting sharp edged tools.
  • Inspect for damage. Damaged, cracked or fractured cutting tools/sawblades must not be used.
  • Cutting tool/sawblade must be correct type for material being cut.
  • Installation of cutting tool/sawblade must be by trained and qualified personnel.

Personal Safety

  • Before using the cutting tool/sawblade, always assess your entire task for personal safety and the safety of others.
  • Only proceed with task if it can be done safely.
  • Use personal safety protection. Respiration protection may be required when sawing some materials.

Cutting Tool Service

  • The cutting tool/sawblade must be inspected, sharpened and serviced only by qualified personnel when:
    1. The power consumption of the machine rises noticeably
    2. The wear zone of the main cutting edge exceeds 0.2mm
    3. The surface quality is no longer acceptable
  • Inspect for damage. Damaged, cracked or fractured cutting tools/sawblades must not be used.

Grinding of tungsten carbide cutting tools will produce mist or dust containing potentially hazardous ingredients. Safety information may be provided by your supplier.