®
Thread Turning Toolholders
Thread Helix Angle
30 mm (1.18 ) 1.5 mm (16 TPI ) 20 x 1.5 30
Standard and Slanted Anvils CPT Toolholder Pockets have a built in 1.5º helix angle. This angle may be adjusted to better match the thread helix angle by simply changing the anvil. Negative helix is usually used when threading RH thread with LH Holder or LH thread with RH Holder.
4.5 ˚
3.5 ˚
2.5 ˚
1.5 ˚
0.5 ˚
-0.5 ˚
-1.5 ˚
L IC Pocket Angle
Standard
AE16 AI 16 AE22 AI 22
16 3/8 EX-RH OR IN-LH AE16+4.5 AE16+3.5 AE16+2.5 16 3/8 EX-LH OR IN-RH AI 16+4.5 AI 16+3.5 AI 16+2.5 22 1/2 EX-RH OR IN-LH AE22+4.5 AE22+3.5 AE22+2.5 22 1/2 EX-LH OR IN-RH AI 22+4.5 AI 22+3.5 AI 22+2.5
AE16+0.5 AE16-0.5 AE16-1.5 AI 16+0.5 AI 16-0.5 AI 16-1.5 AE22+0.5 AE22-0.5 AE22-1.5
AI 22+0.5 AI 22-0.5 AI 22-1.5 22U 1/2U EX-RH OR IN-LH AE22U+4.5 AE22U+3.5 AE22U+2.5 AE22U AE22U+0.5 AE22U-0.5 AE22U-1.5 22U 1/2U EX-LH OR IN-RH AI 22U+4.5 AI 22U+3.5 AI 22U+2.5 AI 22U AI 22U+0.5 AI 22U-0.5 AI 22U-1.5 27 5/8 EX-RH OR IN-LH AE27+4.5 AE27+3.5 AE27+2.5 AE27 AE27+0.5 AE27-0.5 AE27-1.5 27 5/8 EX-LH OR IN-RH AI 27+4.5 AI 27+3.5 AI 27+2.5 AI 27 AI 27+0.5 AI 27-0.5 AI 27-1.5 27U 5/8U EX-RH OR IN-LH AE27U+4.5 AE27U+3.5 AE27U+2.5 AE27U AE27U+0.5 AE27U-0.5 AE27U-1.5 27U 5/8U EX-LH OR IN-RH AI 27U+4.5 AI 27U+3.5 AI 27U+2.5 AI 27U AI 27U+0.5 AI 27U-0.5 AI 27U-1.5
A02-19
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