Block Type Bore Clamp

Block Type Bore Clamp - ROEMHELD B1.4841

• Bore hole diameter: 7.8 - 17.7 mm
• Max. low-clamping force 5.1 - 9.8 kN
• Expansion force , radial: 9 - 14 kN

Advantages:

• Axial clamping in simple bore holes
• 5-sided machining possible
• Expand clamping bushing with spring force
• Hold workpiece without hydraulic pressure
• Clamp workpiece with adjustable hydraulics
• Hardened workpiece support
• Pneumatic seat check
• Connection for positive air pressure protection
• Standard FKM seals
• 2 sizes available
• Alternatively pipe connection or manifold mounting connection

Description:

The bore clamp is a double-acting pull-type cylinder. An exchangeable clamping bushing is fixed to the piston. The four segments of the clamping bushing are radially expanded with spring force by a pyramid-shaped clamping bolt. Thus the expansion force is always the same and independent of the hydraulic clamping pressure. The workpiece is also held without hydraulics by means of the expanded clamping bushing. Both pull-down of the workpiece and unclamping of the clamping bushing are hydraulically controlled. Connecting the positive air pressure protection, the clamping bushing is protected against swarf and coolants. In the hardened support surface for the workpiece there is a bore hole for the pneumatic seat check.

Application:

The bore clamps are particularly suited for clamping of workpieces with smooth bore holes from diameter 7.8 to 17.7 mm in the support surface. The required form-fit in the bore hole is obtained by the special profile of the hardened clamping bushings with penetrating points in the bore hole wall. Hardened materials cannot be clamped with these elements. The workpiece is put directly onto the bore clamp and will not be deformed during clamping. Since clamping is effected within the bore, the remaining surfaces are free for machining on 5 sides.