Wind Power Industry

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Common processing workpieces: wind power bearings, wind power gears, wind power blades, etc.


Recommend CBN and Carbide Tools inserts for Wind Power Industry

CBN Inserts


RNGN PCBN inserts


RNMN solid CBN inserts Halnn



RCMN Solid CBN inserts.jpg


Halnn DNGA coated PCBN inserts.JPG

RNGN CBN inserts

RNMN CBN inserts

RCMX-V CBN inserts

RCMN CBN inserts

DNGA CBN inserts

Coated TNGA1604 PCBN Inserts.JPG

cNGA PCBN Inserts.jpg

RCGX-V/Y(Full face)

WCGW PCD inserts( Full face)

TNGA CBN inserts

CNGA CBN inserts

TNGA CBN inserts

RCGX-V/Y(Full face)WCGW PCD inserts( Full face)


The advantage of CBN inserts

High hardness

Excellent both abrasion resistance and impact resistance;

High cutting efficiency and long tool life;

Patented product, non-metal adhesive CBN inserts.



The Crown Drill

Halnn crown drill machining slewing bearing


The advantages of Crown drill:

The crown drill has a special groove design and the central transverse cutting tool has high strength and a centering effect.

lt can achieve better hole machining size and hole wall quality under ultra-high feed rates. 

The holder is made of high-quality imported alloy steel. Through long-term application experience, it is designed with a special chip breaker groove and drill handle design, which can achieve extremely high system rigidity and strength. 

The same type of drill handle can be fitted with a certain range of drill tips to achieve a higher economy.


Processing case

Processing part: Wind power bearing,  Inner Ring Rib

CBN inserts machining inner ring rib.JPG

Processing size: 2750mm

Material: 42CrMo4

Hardness of Bearing:  58-63 HRC

Surface Roughing: Ra 0.4

Inserts TypeBN-H200 RNGN090300

Machining wayRoughing

Machining parameterVc=190m/min Fr=0.32mm/r, Ap=0.6-0.7mm

Machining way: Finishing

Machining parameterVc=215m/minFr=0.2mm/rap=0.2mm



Out ring raceway PCBN Inserts.JPG

Processing part: Wind power bearing,  Outer Ring Raceway

Processing size: 2750mm

Material: 42CrMo4

Hardness of Bearing:  58-63 HRC

Inserts TypeBN-H200 RNGN090300

Machining wayRoughing

Machining parameterVc=190m/min, Fr=0.43mm/r, Ap=1mm

Machining way: Finishing

Machining parameterVc=260m/minFr=0.2mm/rap=0.1mm


Part: Reducer gear

Processing site:Inner tooth apex

Size:φ1300

Other solid CBN:  RNMN090400

Machining parameter:Vc=80m/min  Fr=0.3 Ap=0.3

Difficulties:One insert cannot complete processing and breakdown

Halnn PCBN BN-H200:  RNMN090300

Machining parameter: Vc=100m/min  Fr=0.3 Ap=0.3

Tool life: Machining 2 PCS with one cutting edge

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Part: Gear for Wind Power Reducer

Rough turning end face and inner hole

Original CBN insert, CNGA120412

Original parameters: VC=120m/min, f=0.2, ap=0.7, diameter D=509

Lifespan: 2 products for a single cutting edge

Improved CBN insert, Halnn RNGN060300

Processing parameters: VC=119m/min, f=0.3, ap=0.7, diameter D=509

Lifespan: 2 products for a single cutting edge

With the same parameters, under the hard conditions of ensuring a minimum lifespan of 2 PCS, circular blades exhibit more stable performance in complex working conditions.

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Part: Gear for Wind Power Reducer

Fine turning end face and inner hole

Original CBN insert, DNGA150412

Original parameters: VC=130m/min, f=0.1, ap=0.2, diameter D=509

Lifespan: 1 product for a single cutting edge

Improved CBN insert, Halnn WNGA080408-WH with wiper

Processing parameters: VC=150m/min, f=0.3, ap=0.2, diameter D=509

Lifespan: 1 product for a single cutting edge

For the inner hole of the large diameter gear ring, the roughness of the workpiece can still be controlled within 0.6 after the deep inner hole machining of the Halnn BN-H200. The processing time of a single piece has been reduced from 24 minutes to 8 minutes, and the processing efficiency has been increased by three times.

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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.


CBN Inserts machining Bearing.JPG


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