Do you already know the impressive tool life of VÃ–LKEL GREEN RING Machine Taps?
10.000 pcs of tapped holes and the VÖLKEL GREEN RING Machine Tap is still in use
without any visible wear. The Customer is fascinated and satisfied with this great result.
Workpiece: Automotive part (Steering knuckle)
Rotation speed: 550-600 RPM
Pre-hole diameter: 5,0 mm with extra chamfered edge at entry position
Lubricant: Emulsion (mixed of water-oil)
Length of thread: 8mm
Type of hole: Blind hole
Machining direction: Horizontal