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M Series – heavy workpieces – safe clamping – precision machining

The live centre is an important element in a load system of a heavy-duty machine tool and plays a decisive role in the final machining result. The BRUCKNER design is especially suited to the high requirements of heavy-duty machining. We offer a choice of two different designs:

  • Load carried only on the taper
  • Load carried on the taper with additional tailstock-sleeve support

Patented tailstock-sleeve support
with safety spigot

 

1Runout with test report

Precision design:
max. 0.008 mm
High-precision design:
max. 0.004 mm

2Sealing through shaft seal ring

protects the bearings from dirt and coolant.

3Housing

High quality material, forged.
Tensile strength approx. 1000 N/mm.
Head and shank hardened.

4Large zero clearance precision roller bearings

to absorb high axial and radial load. Maintenance-free due to permanent lubrication.

5Safety spigot

A patented safety spigot safeguards the screw fastening of the centre housing to the support ring.

Centrepoint without spring loading

Spring loaded centrepoint

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Karl Bruckner GmbH
Präzisionswerkzeugfabrik
Bruckwiesenstraße 11-15
71384 Weinstadt
Ortsteil Grossheppach
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