
USER GUIDE PARTING General Rules for Specific Applications Chamfer and Cut-Off PARTING 1. Break in and/or groove 2. Chamfer 3. Cut-off 1 2 3 V-Belt Pulley Grooves 1. Break in 2. Multiple plunge to depth at minor width of groove 1 2 3 4 3-4. Bevel, plunge and turn to minor diameter Neck Recessing a 5. Multiple plunge grooves 6. Necking On neck turning, DOC (a)=up to size of insert corner radius 1 2 3 4 5 6 Cut-Off on Eccentric Tubes Inserts with 4º lead angle are usually recommended for tubes. However, the combination of eccentric bore and machine resiliency may increase feed-snap on breakthrough and damage the cutting edge. Changing to 6º lead angle inserts will moderate breakthrough. Alternatively, inserts with an extra negative rake-land that strengthens the cutting edge are available on request. Clamping / Extraction Instructions The tools are equipped with a user-friendly clamping and extraction device ETG 5-7 (for 5-7 mm tools) ETG 2 (for 2 mm tools) ETG 1.4 (for 1.4 mm tools) ETG 8-12 Extractor for 8 to 12.7 mm Inserts Extraction Side Extracting Insertion Side Clamping ETG 3-4 (for 3 and 4 mm tools) The flat side of the pin must face up Extracting Clamping 421 421