آلة طحن تروس

Burri BZ 331

Technical details
max. wheel diameter 330 mm
gear width 175 mm
max. module 6,0
min. module 0,8
centre distance 162 - 556 mm
shifting 100 mm
number of teeth 6 - 600
max.helical angle 45° deg.
pressure angle 14° - 30° deg.
grinding worm dia. max. 350 mm
width of grinding worm 84/104 mm
number of starts max. 5
workpiece weight max. 60 kg
total power requirement 23 kVA
weight of the machine ca. 6,7 t
Additional information
The machine is in excellent condition and has been used maximum in 1-shift operation.

Generating and profil grinding.

In July 2023, the machine was fitted with a new PC (PC APC910 1.4GHz; 2x2048MB RAM) and received a software update for profile grinding.

Working hours (dated 09. April 2026):
Working hours since software update: 12,689 h
Working hours grinding/profiling: 1,976 / 134 h

The machine was overhauled in July and October 2023:
- Replacement of the X, Y, U and V ball screws, guides for the U and V axes, etc.


Minimum workpiece root diameter: 10 mm
Maximum workpiece tip diameter: 330 mm
Maximum grinding stroke: 175 mm
Maximum tooth width: 175 mm
Maximum workpiece weight: 60 kg
Center distances: 162 to 556 mm

Grinding worm dimensions:
Maximum outer diameter: 350 mm
Minimum root diameter: 250 mm
Width: 84/104 mm
Maximum module (with limitations): 6.0 mm
Number of threads: up to 5
Maximum usable width (shift travel): 100 mm

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Tooth design:
Minimum number of teeth: 6
Maximum number of teeth: 600
Module with automatic centering: min./max. 0.8/6.0 mm
Pressure angle: min./max. 14/30 deg.
Maximum helix angle left and right: 45 deg.

Grinding screw speeds:
Grinding: 0 - 3500 rpm
Profiling: 0 - 150 rpm
Setup (special operating mode): max. 50 rpm

Workpiece speed with gearbox: max. 400 rpm
Workpiece speed with direct drive: max. 750 rpm

Maximum shift travel: 100 mm

Total connected load: 23 kVA
Machine weight: 6.7 t