| Cutting Diameter Tolerances |
| End Mill Style |
Number
of Flutes |
Type/Range |
Niagara Cutter Tolerance |
Corresponding List Numbers |
Double-End
Finishers |
2, 4 |
Center Cutting |
(+.0000 / -.0015) |
DP530, DPC560 |
| Single-End Finishers |
2, 4, 6, 8 |
All Except Heavy Duty |
(+.001 / -.000) |
EX350, SP205, SP408, SPC408, SPB540 |
Heavy Duty
Finishers |
4, 6, 8 |
Heavy Duty With 2" & 2-1/2" Diameter Shanks |
(+.005 / -.000) |
HDP890, (All single-end finishers with 2" & 2-1/2" dia shanks) |
| Multi Flute Coarse & Fine Pitch Roughers |
4, 5, 6, 8, 10 |
1" Ø & Under |
(+.003 / -.000) |
EXR350, RMB700, RMB449, REM710, REC700, RXC753, REM445, REC448 |
| 1-1/8" Ø & Over |
(+.006 / -.000) |
| All 3 Flute Coarse & Fine Pitch Roughers |
3 |
All Sizes |
(+.005 / -.000) |
RTM713, RHC752, RHLC754, RTM447 |
| Truncated Rougher/Finisher and Chipbreaker |
3, 4, 5, 6, 8 |
All Sizes |
(+.001 / -.000) |
RFM440, RFM441, RFCB444 |
| Metric Finishers With Inch Shanks |
2, 4 |
All Sizes |
(+.001 / -.000) |
SMM835, SMM845 |
| VFP Metric Shanks |
4 & 6 |
All Sizes |
+.002 / -.000 |
VFP435, VFP635, VFP2435, VFP2635 |
| Ball-End |
All |
All Sizes |
Ball radius tolerances: flute dia tolerances / 2 |
|
