
The table below defines the recommended insert inclination angle (β) and anvil selection according to helix angle (φ) for single-start threading and according to lead angle (φL) for multi-start threading, depending on the thread turning method for machining asymmetric threading profile according to SAGE thread standard only.
| thread tu | rning method | ||||||
| Production of ri with right | ght-hand threading -hand holder | Production o with le LH | f left-hand thread ft-hand holder | ing | |||
| RH | or | LH | |||||
| RH | |||||||
| Anvil | selection | ||||||
| Positive Anvils | Negativ | e Anvils | |||||
| Thr | eading helix (lead) angleφ(φL) | φ(φL)>5.6° | 5° | 3° | 2° | 1° | 0° |
| In | clination angleβ | 2.5° | 1.5°(std) | 0.5° | -0.5° | -1.5° | |
| lC | Toolholder | Anvil de | signation | ||||
| 16 (3/8) | EX RH OR IN LH EX RH OR IN LH | AE 16 +2.5 AI 16 +2.5 | AE 16 +1.5 AI 16 +1.5 | AE 16 +0.5 AI16 +0.5 | AE 16 -0.5 AI 16 -0.5 | AE 16 -1.5 AI 16 -1.5 | |
| 22 (1/2) | EX RH OR IN LH EX RH OR IN LH | AE 22 +2.5 AI 22 +2.5 | AE 22 +1.5 AI 22 +1.5 | AE 22 +0.5 AI 22 +0.5 | AE 22 -0.5 AI 22 -0.5 | AE 22 -1.5 AI 22 -1.5 | |
| 27 (5/8) | EX RH OR IN LH EX RH OR IN LH | special solution | AE 27 +2.5 AI 27 +2.5 | AE 27 +1.5 AI 27 +1.5 | AE 27 +0.5 AI 27 +0.5 | AE 27 -0.5 AI 27 -0.5 | AE 27 -1.5 AI 27 -1.5 |
| 22U (1/2U) | EX RH OR IN LH EX RH OR IN LH | AE 22U +2.5 AI 22U +2.5 | AE 22U +1.5 AI 22U +1.5 | AE 22U +0.5 AI 22U +0.5 | AE 22U -0.5 AI 22U -0.5 | AE 22U -1.5 AI 22U -1.5 | |
| 27U | EX RH OR IN LH | AE 27U +2.5 | AE 27U +1.5 | AE 27U +0.5 | AE 27U -0.5 | AE 27U -1.5 | |
| (5/8U) Standard EX - Anv IN - Anvil | EX RH OR IN LH anvil supplied with tool il for external threading for internal threading | AI 27U +2.5 | AI 27U +1.5 | AI 27U +0.5 | AI 27U -0.5 | AI 27U -1.5 | |
| Positiv Feed Towa | e Anvils rds the Chu | ck | Fe | Negative ed Towards | Anvils the Tailst | ock | |
| +φ(φL) | -φ(φL) | ° | |||||
| +β | −β | ||||||
| 1.5° const. | 1.5° const. |