SumiGrip Jr. STFH Type Cut-Off (Steel Holder/Tool Block Type) ● How to Install the Insert Insert Please mount the insert by lightly tapping it with a plastic or STFH wooden hammer. Hammer (Please confirm that you cannot remove the insert by hand.) Cut-off CW LF It is not necessary to force the B end of the insert to touch the holder. Please beware that excessively knocking in the insert can cause insert and holder breakage. HF H LF2 ■ Parts 150° Cut-Off ■ Holders Dimensions (mm) Height Width Length Cutting edge Holder Width Max. Cat. No. Stock height length of cut cut-off Applicable inserts Applicable tool blocks Wrench H B LF HF LF2 CW dia. STFH 26-2 D 26 1.6 109 21.4 108 2.0 40 WCF 2 STFH 26-3 D 26 2.4 109 21.4 108 3.0 70 WCF 3 SBN 20-26 STFH 26-4 D 26 3.4 109 21.4 108 4.0 70 WCF 4 SBU 20-26 STFH 26-5 D 26 4.3 109 21.4 108 5.0 70 WCF 5 SL-4 STFH 32-2 D 32 1.6 149 25.0 148 2.0 40 WCF 2 SBN 20-32 F STFH 32-3 D 32 2.4 149 25.0 148 3.0 100 WCF 3 SBN 25-32 STFH 32-4 D 32 3.4 149 25.0 148 4.0 100 WCF 4 SBU 20-32 STFH 32-5 D 32 4.3 149 25.0 148 5.0 100 WCF 5 SBU 25-32 Cut-Off Tools Note: STFH32-2 has a partly different appearance.  See F47 for applicable inserts. ■ Tool Block SBN Type (integral type) ■ Parts ■ Tool Block SBU Type (split type) ■ Parts Grooving H Ha Hb H Ha Hb Cut-Off BCS15 L Ha: 12.5 20 Hc L Ha: Hc Threading Center height Center height 12.5 20 18 18 BCS20 < > SBN20–26 Dimensions (mm) < > SBU20–26 Dimensions (mm) BCS25 Stock Center Install Install Double Stock Center Install Install height ation ation Height Length height ation ation Height Length Clamp Cat. No. length position Clamp ended Wrench Cat. No. length position wedge Cap screw Wrench Ha Hb Hc H L screw Ha Hb Hc H L SBN 20-26 D 20 20 10.0 45 80 SBU 20-26 D 20 20 10.0 45 80 BCS15 SBN 20-32 D 20 20 13.5 50 100 BWS30 WB8-20 LH040 SBU 20-32 D 20 20 13.5 50 100 BCS20 BX0622 LH050 SBN 25-32 D 25 25 8.5 50 110 SBU 25-32 D 25 25 8.5 50 110 BCS25 ■ Tool Block Type Selection Guidance Tool block (mono-block type) SBN type Example: SBN20–32 General purpose lathe, etc. Turret type tool post, etc. SBN type SBU type SBU type Tool post Tool post ・ This tool block can be used for the machine tool post shown on the right. Tool block (separate type) SBU type Example: SBU20–32 Tool block Tool block ・ This tool block can be used for the machine tool Spacer Wedge posts and shown on the right. ・ The holder can have a long overhang due to the wide (overhead clamp) (side clamp) clamping range of a larger top clamp. F46