Types

• Type B: Ball steel, smooth contact face

• Type R: Ball steel, serrated contact face

• Type K: Ball plastic, smooth contact face

Steel

• tempered

• Tensile strength class 10.9

Ball

Type B and R:

Steel hardened (54+2 HRC)

Type K:

Plastic (Polyacetal POM)

O-Ring

Rubber NBR (Perbunan)

Clamping pads GN 709.8 are also used in jig and fixture construction, for example for clamping workpieces, as movable bearing surface or as stop. The swivel-mounted ball compensates uneven and non-parallel contact surfaces by as much as 10°. It is also secured against further twisting.

The O-ring holds the ball in position and prevents dirt from penetrating, resulting in a long service life and constant mobility.

• Strength values of screws 

• Plastic characteristics 

• Elastomer characteristics