Body steel.
Bushes carbon steel.

Black oxidised.

These centring clamps enable workpieces to be centred on and lightly clamped in a bore. The clamps have a wide expansion range. The series covers a bore range of Ø12 to Ø30 mm. To increase the centring accuracy the clamps with internal thread have a centring spigot (D2) for a locating hole. The centring accuracy is ±0.2 mm.
Centring clamps with internal threads fit on M6 grid systems (see illustration).