External turning WFHF Standard corner-R (RE) Back rake angle (°) BH 4.5 20 Toolholders for general purpose TN insert WTEN (External turning / External chamfering) 57° 60°LH LF WTENN2020K D 60° Toolholder dimensions Spare parts Availa-bility Dimension (mm) Clamp set Nut Shim Shim pin Shim* Spacer Wrench (hex.) Description Applicable inserts N H B LH HF LF WF WTENN 2020K-16N N 20 20 20 125 10 32 0.8 -8.5 WCS-1N WN-1 WTN-33 WP-1S WTN-33-20 WSP-1 LW-3 TN..1604 2525M-16N N 25 25 25 150 12.5 When using inserts whose corner-R(RE) is greater than 1.6 mm, please purchase a shim* and use it in order to prevent workpiece and shim from interfering each other. In wedge lock, use of ceramic insert other than silicon nitride insert is not recommended due to strong restrain force. N : Standard item Recommended cutting conditions: D53 - D54 D24