Design principles, quality features
Ideas,
development, solutions, we are setting standards...
BRUCKNER WORKS
STANDARD Our high-performance live
centres – standard as well as special
designs – are tested according to our
works standard. Materials, production
and testing are subject to strict
quality guidelines guaranteeing function
and performance..
Head bearings: the
design
When under
load, every live centre's tapered shank
deflects at the point where the Morse taper
emerges from the tailstock.In our design
principle of head bearings the unit of
centrepoint and bearings is placed in front
of this deflection diameter. Therefore the
tapered shank bending stress is not
transmitted to the centrepoint.
Result:
No premature wear and tear of
individual bearings due to running on their
edges.
Our TOP SEAL SYSTEM
provides a triple-layer bearing protection
from coolant.
High r.p.m. and
contaminated coolant impair the function and
life of conventional seals. Thus coolant,
dust and dirt can penetrate into a live
centre and destroy the bearings.
The coolant does not hit the
seal immediately, but flows
with reduced energy into the
first labyrinth channel.
There the biggest part of
the coolant is drained
through the first drain
aperture.
The small rest is wiped off
the seal into the second
labyrinth channel and flows
through the second drain
aperture.
Test report for accuracy of concentricity Each
and every BRUCKNER high-performance live
centre is tested for accuracy of
concentricity under axial load. The test
result is then stamped into the tool and is
guaranteed by the test report.
