hard Turning Slewing Bearing, CBN Insert Turning Bearing, PCBN inserts Recommend inserts

Advantages of our CBN inserts machining Bearing

High hardness

Excellent both abrasion resistance and impact resistance;

High cutting efficiency and long tool life;

Patented product, non-metal adhesive CBN inserts.

Processing case

Processing part: Wind power bearing,  Inner Ring Rib
Processing size: 2750mm
Material: 42CrMo4
Hardness of Bearing:  58-63 HRC
Surface Roughing: Ra 0.4
Inserts Type：BN-H200 RNGN090300
Machining way：Roughing
Machining parameter：Vc=190m/min Fr=0.32mm/r, Ap=0.6-0.7mm
Machining way: Finishing
Machining parameter：Vc=215m/min，Fr=0.2mm/r，ap=0.2mm

	Processing part: Wind power bearing,  Outer Ring Raceway
	Processing size: 2750mm
	Material: 42CrMo4
	Hardness of Bearing:  58-63 HRC
	Inserts Type：BN-H200 RNGN090300
	Machining way：Roughing
	Machining parameter：Vc=190m/min, Fr=0.43mm/r, Ap=1mm
	Machining way: Finishing
	Machining parameter：Vc=260m/min，Fr=0.2mm/r，ap=0.1mm

Heat-treated bearings, such as wind turbine bearings, metallurgical bearings, and wheel hub bearing units, generally have a hardness above HRC50, which puts high demands on the wear resistance and life of the tool.

Large-scale bearings, such as wind turbine bearings, have large diameters. After heat treatment, the machining allowance is 2-6mm, and the machining allowance is uneven. Moreover, there are oil holes in the lunar groove of the outer ring raceway of the machining part. The tool needs good impact resistance and toughness. It will break easily. At the same time, bearings have higher requirements for accuracy and surface roughness. For example, the accuracy tolerance of the raceway radian of the wind turbine bearing is 0.08, and the surface roughness of the raceway is Ra0.4.

With the continuous development of the modern tool industry, the cubic boron nitride (CBN) tool BN-H200 material developed by the superhard material industry effectively solves the problem of difficult bearing machining and can meet the requirements of high quality, high efficiency and low cost at the same time.