Roemhleld - Bore clamp

ROEMHELD Bore clamps

 A particularly space-saving possibility of workpiece clamping.
The bore clamp are particularly suited for clamping of workpieces with smoothbore 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.
The size of the possible machining forces is certainly limited using this type of clamping, especially crosswise to the clamping surface. Except the static friction force between the workpiece and the support, the bore clamp cannot compensate any side loads. Additional stops or positioning elements can help in such applications. Workpiece sections that are subject to vibrations and deformations during machining, have to be additionally supported or clamped in a flexible (floating) position.

The benefits at a glance:

•  axial clamping in simple bore holes allows 5-side machining and optimum workpiece accessibility
•  hold the workpiece without hydraulic pressure to increase the machine safety
•  pneumatic seat check for use in automated applications


Application examples
 

Block-type eccentric, for bore diameter 6.6 to 13.8 mm, double acting, max. operating pressure 250 bar		Block type, without centring function, double acting, for bore diameter 7.8 – 17.7 mm, max.operating pressure 250 bar
Machining of a cast part from 5 side		Machining of an oil sump from 5 sides

Variante constructive disponibile
 

Bore Clamp B1.4843 without centring function double acting Bore hole diameter: 7.8 ..17.7 mm Max. low-clamping force 5.1 .. 9.8 kN Expansion force, radial: 9 .. 14 kN Max.operating pressure 250 bar Download Bore Clamp B1.4843	Bore Clamp B1.4842 flange type without centring function double acting Bore hole diameter: 7.8  .. 17.7 mm Max. low-clamping force 5.1 .. 9.8 kN Expansion force, radial: 9 .. 14 kN Max.operating pressure 250 bar Download Bore Clamp B1.4842
Bore Clamp B1.4841 double acting, pull-type with and without centring function Bore hole diameter: 7.8 ..17.7 mm Max. low-clamping force:  5.1 .. 9.8 kN Expansion force, radial: 9 .. 14 kN Max.operating pressure 250 bar Download Bore Clamp B1.4841	Bore Clamp B1.481 double acting, pull-type with and without centring function Bore hole diameter: 16 ..46 mm Max. low-clamping force: 0.6 .. 7.9 kN Admissible torque: 15 .. 300 Nm Repetitive clamping accuracy: 0.005 mm Max.operating pressure from 50 up to 350 bar Download Bore Clamp B1.481
Bore Clamp B1.485 block-type eccentric double acting Bore hole diameter: 6.6 ..13.8 mm Max. pull force: 3.8 .. 6.3 kN Axial clamping force: 210 .. 720 N Admissible torque: 15 .. 300 Nm Repetitive clamping accuracy: 0.003 mm Max.operating pressure 250 bar Download Bore Clamp B1.485	Bore Clamp B1.480  Hydraulic threaded-body clamping module pull-type single and double acting with anti-rotation device Max. pulling force 24.5 kN Clamping stroke, pulling 6.0 mm Max.operating pressure: 500 bar Download Bore Clamp B1.480
Bore Clamp RH-S026 Seat check + clamping and unclamping monitoring double acting Compact eccentric design for limited space • different support heights • hardened support height • 3 pneumatic monitoring functions can be connected • integrated positive air pressure function • integrated bleeding screws                          Bore hole diameter: 8.0 ..12 mm Max.operating pressure 120 bar Download Bore Clamp RH-S026