Universal Thread and Worm Grinding Machine Reishauer NRK.

Thread / Worm Grinders

Specification : 

Distance between centres 700 mm
Grinding length 450 mm
Workpiece 3  200 mm
Workspindle bore 38 mm
Lead range for single-rib wheels 0.4 80 mm
Lead range for multi-rib wheels 1 6 mm
Max. lead angle 2 x 25
Grinding wheel dimensions, x width 350 x 20/40 mm
Relief grinding size 0 - 4 mm
Presettable number of flutes 2 , 12, 14 and 16
18 workpiece speeds 0.4 24 rpm
Grinding wheel speeds 1,900 / 1,550 rpm crushing / dressing 72 rpm
Spindle drive, approx. 3 kW
Total electric load 7.5 kW - 380 V - 50 Hz
Weight 3,000 kg

Simple manual grinding wheel dressing device
built-on above the grinding wheel.
Centre grinding device with adjustable angle
for building on the table.
Built-in relief grinding device / plunge-cut grinding device.
Change gears in wooden box.
Special workpiece holder for thread rolls.
Built-in electric system.
Built-in coolant device.
Separate grinding spindle