As the saying goes, if a worker wants to do something good, he must first sharpen his tools. The cutting tool is the beginning and end of the work of machining the bearing. Choosing the right high-quality cutting tool will bring you not only the smooth completion of the workpiece, but also greatly improve for you. Processing efficiency and saving processing costs.

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Haln BN-H11grade CBN inserts for efficient machining bearings
Bearings are ubiquitous, bearing steel is often used as the main material,
and bearing steel is one of the most demanding steels in all steels, with
high hardness, wear resistance, fatigue strength and other properties, and
with the development of manufacturing industry, how to efficiently
process bearings and reduce productioncosts is a problem for all bearing
manufacturer.
As the saying goes, if a worker wants to do something good, he must first
sharpen his tools. The cutting tool is the beginning and end of the work of
machining the bearing. Choosing the right high-quality cutting toolwill
bring you not only the smoothcompletion of the workpiece, but also
greatly improve for you. Processing efficiency and saving processing
costs.
Halnn has been adhering to the initial business philosophy of “not
seeking big and complete, only high precision” for more than ten years. It
focuses on CBN inserts for cutting hard materials and high-grade PCD
inserts as research direction. The industry enjoys a high reputation,
especially in the field of “Turning instead of grinding”, ultra-high

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hardness and heavy-duty cutting, high-speed machining of cast iron, etc.,
leading the industry with first-class level.
For the bearing industry, Halnn developed BN-S20 grade CBN inserts,
BN-S200 grade CBN inserts and BN-H11 grade CBN inserts, which are
used for roughing and finishing processes respectively, and improve
production in addition to ensuring high quality requirements of bearings.
Efficiency and reduced productioncosts.
Efficient machining bearing CBN tools - BN-S20 grade CBN inserts
BN-S20 grade CBN inserts is mainly used for the rough processing of
bearings. It belongs to the solid CBN inserts, which can cut the
machining allowance of the bearing, reduce the number of passes, and
can withstand high temperature cutting to ensure long toollife. The
specific cases are as follows:

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CBN grade Workpieces materials
Tool type
BN-S20
SNGN120712
Workpiece Slewing bearing
Equipped with
toolholder
CSDNN series Materials 42CrMo
Original tool Grinding process
Workpieces
hardness
HRC47-55
Cutting parameter Workpiece shape
Vc（m/min） 100-150
Fr（mm/r） 0.15-0.7
ap（mm） 1-4
Machining effect: Under the same precision requirements, the production efficiency
of BN-S20 grade CBN inserts turning processing is 4 times of grinding processing;
and the electric energy and labor consumed, material consumables are only 1/5 of the
grinding process, and the tool durability is high , the cost of use is lower.
Efficient machining bearing CBN inserts - BN-H11 grade CBN
inserts
BN-H11 grade CBN inserts is mainly used for the finishing process of
bearings. It belongs to the brazed CBN inserts and can hard turning
bearings at high speed. The large amount of heat generated during the
cutting process is taken away by the chips, and there is no burn problem,
ensuring high precision and high surface finish requirements.

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CBN grade Workpieces materials
Tool type
BN-H11
DNGA150408
Workpieces
Metallurgical
bearing
Original tool
European brand CBN
tool
Materials GCr15
Cutting parameter Workpiece shape
Vc（m/min） 60-250
Fr（mm/r） 0.05-0.35
ap（mm） ≤1
Machining effect: Under the same cutting parameters, the tool life of Halnn CBN
inserts BN-H11 grade is higher than that of European brand CBN inserts, the cost per
piece is reduced, and the surface finish is Ra0.8.
Note:
(1) In the process ofmachining bearings with Halnn CBN inserts, dry
cutting, especially solid CBN inserts, cannot be added cutting fluid;
(2) Before processingthe bearing, try to communicate with the CBN
inserts engineer to recommend reasonable cutting parameters for the
cutting toolto achieve the bestresults.