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USER GUIDE
User Guide and Cutting Data
Types and Profiles of Threading Inserts Full Profile THREADING
• Performs a complete thread profile
Partial Profile • Root corner radius is only suitable for the relevant pitch
• Performs different thread standards and • Recommended for mass production
is suitable for a wide range of pitches that • Suitable for one profile only
have a common angle (60º or 55º)
• Inserts with a small root-corner radius
suitable for the smallest pitch of the range
• Additional operations to complete the outer/
internal diameter are necessary
• Not recommended for mass production
• Eliminates the need for different inserts
Thread Turning Methods
Right-Hand Thread Left-Hand Thread
External Thread RH (1) (1) RH
LH
LH
Internal Thread RH LH LH RH
(1) (1)
(1) Change anvil to negative
Anvil Selection According to Thread Helix Angle λ
Standard
Thread Helix Angle λ >4º 3º-4º 2º-3º 1º-2º 0º-1º Negative Anvils
Inclination Angle β 4.5º 3.5º 2.5º 1.5º 0.5º -0.5º -1.5º
l (d) Toolholder Anvil Designation
16 EX RH OR IN LH AE16+4.5 AE16+3.5 AE16+2.5 AE16 AE16+0.5 AE16-0.5 AE16-1.5
(3/8) EX LH OR IN RH AI16+4.5 AI16+3.5 AI16+2.5 AI16 AI16+0.5 AI16-0.5 AI16-1.5
22 EX RH OR IN LH AE22+4.5 AE22+3.5 AE22+2.5 AE22 AE22+0.5 AE22-0.5 AE22-1.5
(1/2) EX LH OR IN RH AI22+4.5 AI22+3.5 AI22+2.5 AI22 AI22+0.5 AI22-0.5 AI22-1.5
27 EX RH OR IN LH AE27+4.5 AE27+3.5 AE27+2.5 AE27 AE27+0.5 AE27-0.5 AE27-1.5
(5/8) EX LH OR IN RH AI27+4.5 AI27+3.5 AI27+2.5 AI27 AI27+0.5 AI27-0.5 AI27-1.5
22U EX RH OR IN LH AE22U+4.5 AE22U+3.5 AE22U+2.5 AE22U AE22U+0.5 AE22U-0.5 AE22U-1.5
(1/2U) EX LH OR IN RH AI22U+4.5 AI22U+3.5 AI22U+2.5 AI22U AI22U+0.5 AI22U-0.5 AI22U-1.5
27U EX RH OR IN LH AE27U+4.5 AE27U+3.5 AE27U+2.5 AE27U AE27U+0.5 AE27U-0.5 AE27U-1.5
(5/8U) EX LH OR IN RH AI27U+4.5 AI27U+3.5 AI27U+2.5 AI27U AI27U+0.5 AI27U-0.5 AI27U-1.5
+λ° +β° −λ° −β°
1.5° 1.5°
const.
const.
Anvils for positive inclination angle applicable when turning Anvils for negative inclination used when turning RH
RH thread with RH holders or LH thread with LH toolholders. thread with LH holder or LH thread with RH toolholder.
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