• all workpieces can be clamped and centered accurately on the horizontal work-table without any problem. The weight of the workpiece is distributed uniformly. As workholding devices can be used three-jaw chuck, locating flanges, taper plugs and special clamping devices.

• The U 305 is designed for universal application, as well as for easy and convenient operation. It is precise in its operation and has a nearly unlimited life. The main spindle is carried on taper roller bearings fitted for life.

• The speed of rotation of the work-table is steplessly variable. The feed is "intermittent". The vertical and horizontal feed drives are powered by electronically controlled, steplessly variable DC motors.

Capacity
Max. wheel dia. 1400 mm
Max. turning and grinding dia. 1210 mm
Min. turning dia.150 mm
Max. brake disc dia. 420 mm
Max. brake disc thickness 60 mm
Max. machining width of brake disc surface 130 mm
Max. dia. of flywheels 600 mm
Min. dia. of flywheels 300 mm
Vertical travel 730 mm
Horizontal travel 520 mm

Spindle speeds and feeds
Steplessly spindle speed 20 - 120 rpm
Speed of grinding spindle
at contour grinding 4500 rpm
Speed of grinding spindle
at cross-hatch grinding 2800 rpm
Intermittent feed forward
and reverse, up and
down, steplessly variable 0 - 0,4 mm/r

Electrical equipment
Conected load 2,6 kW
Voltage 400 V
Frequency 50 Hz
Power supply fuse rating 16 A
Type of enclosure IP 54
Power of individual motors
Main spindle motor 1,5 kW
Grinding attachment motor 1,1 kW

Dimensions and weight
L x W x H 1,75 x 0,77 x 1,72 m
Space required machine
and working area 2 x 1,5 m
Weight machine including standard
accessories and packing approx. 900 kg

Dust extraction
Minimum flow 150 m3/h
Dia. of trunking connection 32 mm

Noise level
The noise level at full load and/or max. flow measured in accordance with stan-dard DIN EN 31201 at a distance of 1 m from the machine surface in open space amounted to 84 dB(A).

Subject to change without notice.