512A 20PA Involute Gear Cutters

                                                                        *****IMPORTANT*****
*Numbering of cutters shown above follows the usual UK/USA conventions - these are the cutters that will be supplied to
purchase orders where the cutter number alone is given. In much of continental Europe the opposite, German, convention is used.
Therefore it is most important when ordering to confirm -
1. The Module or diametral pitch required
2. The number of teeth in the gear to be cut (number of teeth in a full circumference, as this determines the tooth shape)
3. The Pressure Angle required (for Module cutters, this will usually be 20°, but it is possible to produce with 14.1/2° PA).
4. The bore size required. The above are our standard bores, but others may be produced.

Cutter Numbering conventions for Spur gears:

For gears with fewer than 12 Teeth, the standard cutters in a set will not be useful, and a special cutter for that tooth number, 
an absolute cutter, will be required.
For very large sizes (Module 11 and above), cutters are available in sets of 15 (includes half size numbers) for closer approximation to the tooth form.
Please enquire.

Most common sizes from 1 MOD up to 6 MOD are held in stock. Cutters with metric bores are mostly not held in stock, but up to 8 MOD are
produced to special order quite quickly, as blanks are held in stock. Cutters for tooth forms up to 16 MOD can be manufactuerd to special order.
Cutters for tooth forms as large as 1DP can be manufactured to special order.