Instructions for Tuff Modular Head System

Mounting Modular head and MSN/MGN shank holder

Tightening procedure

1 Cleaning 2 Initial Tightening 3 Final Tightening

Remove dirt and chips with air blowTighten by hand until the head andTighten slowly with torque control
from the connecting thread and facethe shank holder faces touch.spanner wrench or special spanner

of modular head and MSN/MGN shank wrench for S-Head and confirm that holder. there is no gap.

Attention: Final tightening without initial tightening can cause connecting thread damage.

NOTE 1. Use the spanner wrenches that designed specifically for S-Head or torque control type. Torque control spanner wrench

2. Please gently apply pressure on wrench. Spanner wrench for S-Head (DS type) 3. Please confirm that there is no gap between MSN/MGN shank holder and Modular head.

■ Except for S-Head ■ S-Head

ThreadTightening torqueSpannersize for S-HeadThreadTightening torqueSpannersize for S-HeadCat No.of spanner wrench for S-Head
M68.0N·m8M810~11N·m14DS-14
M816N·m10,12M1010~16N·m17DS-17
M1016N·m14,15M1215~20N·m22DS-22
M1220N·m17M1620~25N·m27DS-27
M1625N·m22,26

※Modular heads are supplied without spanner wrench.