R1: Standard Bearing Pad
General purpose stock drill contour for steel, stainless steel, inconel and aluminum. It offers minimum bearing contact with the workpiece (non-micable).
R2: Standard Bearing & Guide Pad
Recommended for all non-ferrous and cast iron up to gundrill diameter of .200″ (non-micable).
R3: High Bearing Pad & Guide
This pad is for good size control, including at exit. This special purpose contour is implemented where micable diameter and extra burnishing action is required, not for all materials (micable).
R4: High Bearing & Guide Pad
This pad is to be used in aluminum and brass for best hole finish and for intersecting holes and interrupted cuts, or extra O.D. support and burnishing. Use with wood and plastic in combination with .0015/.002″ back taper. Do not use this pad in high nickel content materials do to high burnishing forces (micable).
R6: High Bearing & Guide Pad Reamer
This pad is used for “chips ahead” reaming applications when opening up existing holes, e.g., valve guides (micable).
R9: High Interrupted Bearing Pad
This pad is again used for “chips ahead” reaming applications when opening up existing holes, e.g., valve guides (micable).
R10: Two Flute Bearing Pad
The R10 is used for high penetration rates in applications such as lubrication holes. Contour for aluminum shown (micable).
SP: Special Contour
Bearing pad angles as defined by special requirements. CNC contour grinding allows us to manufacture to customer specifications.