AD Bars Interchangeable Head Boring Bars with Anti-vibration Dampener System  Boring Adapter (with Coolant Hole / Anti-vibration Dampener System) Coolant Hole (2 holes) Special dampener system made from heavy metal Locating Pin Hole G L3 (MIN.) φD1 B L2 L1 H  Dimensions Spare Parts Dimension (mm) Clamp Bolt Wrench (sold separately) Description Std. F φD1 H B L1 L2 L3 G (MIN.) AD32U ● 32 31 29 310 200 200 HH5X20 HH5X30 LW-4 AD40V ● 40 39 37 360 248 228 Rp3/8 (3 pcs) (1 pcs) Boring AD50W ● 50 47 47 410 280 276 HH6X20 HH6X30 LW-5 (3 pcs) (1 pcs) Note) L3 (MIN.) dimension indicates the minimum length in case of the back end of boring adapter is cut for use. Do not shorten it to less than L3 (MIN.). Solid  Combination of Boring Adapter and Interchangeable Head Positive Boring Adapter Interchangeable Head Description Base Description Clamp Bolt Wrench AD Bars HA32 PCLN& 12-40 Negative PDUN&15-43 HH5X20 HH5X30 PTFN& 16-40 AD32U SCLC& 09-40 HH5×20 LW-4 SDUC&11-40 HA40 PCLN& 12-50 PDUN&15-50 AD40V HH5X20 HH5X30 PTFN& 16-50 HA50 PCLN& 12-63 PDUN&15-63 AD50W HH6X20 HH6X30 LW-5 PTFN& 16-63  How to exchange heads 1. No head attached 2. Align hole positions 3. Tighten 3 bolts to attach the head For lever lock type Interchangeable head, use 2 short bolts for upper side and 1 long bolt for lower side. HA32 SCLC&09-40 and HA32 SDUC&11-40 use HH5 X 20 for all 3 bolts. ●: Std. Item F66