Ball Bearing Manufacturing Process 130930021744 Phpapp01

8/11/2019 Ball Bearing Manufacturing Process 130930021744 Phpapp01

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http://www.FitrunBearing.com

Ball Bearing Manufacturing

Basic Knowledge

Fitrun Bearing Co., Ltd.

Made by: Kenneth Huang

November 2012
http://www.fitrunbearing.com/http://www.fitrunbearing.com/


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Contents

. Bearing MFG Basic Process

. Bearing Material

. Forging Process

. Turning Process

. Heat Treatment

. Grinding Process

. Bearing Assembly


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. Bearing MFG Basic Process

Bearing Ring (Outer and Inner)

Material Forging Turning Heat Treatment Grinding Assemble

Roller

Material Turning Heat Treatment Grinding Assemble

Cage (Brass Cage)

Material Casting Turning Milling Deburring Assemble


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. Bearing Material

Bearing Ring and Roller Material

NO Material Performance

1 High surface load capacity

2 Good abrasion resistance

3 High elastic limit

4 Good hardness

5 Toughness

6 Good size stability

7 Good rust resistance

8 Good processing performance

Common Material:

High-carbon chromium bearing steel:Gcr15 Gcr15SiMn

Other Material:

Carburized bearing steel

Abrasion and corrosive resistance bearing steel

Heat resistance bearing steel


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Bearing Cage Material

Non-ferrous metal:

Brass HPb59-1, bronze QAL10-3-1.5, Aluminum alloy LY11CZ

Ferrous Metal:

Quality carbon steel thin plate

Non-metal:

Engineering nylon, Phenolic adhesive


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. Forging

Forging is the preliminary processing of bearing ring making, its also

named blank processing.

The main purposes of bearing ring forging processing are:

1. To obtain the semi-finished ring which is similar with the bearing, so as to

enhance the efficient of metal material and reduce the mechanical machining

work, and at last to save the cost of production.

2. To eliminate the inner defect of metal, improve metal organized system, so as to

make the metal be with proper streamline distribution and with good

compactness, and at last to enhance the life span of bearings.

Forging

Hot Forging metal is heated to be above the crystallization temperaturewidely used.

Cold Forging metal is forged in the room temperature barely used.

Warm Forging metal is forged in the temperature between hot forging and cold

forging in test period.


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. Turning

Turning is for semi-finished bearing ring and roller, its also called

forming process.

The main purposes of turning:

1. To make the bearing ring and roller be the same shape with the finished

products.

2. To create good condition for the coming grinding processing.

Turning

Integrated Processing: to finish all the turning procedure in one

machine --- suitable for small quantity production.

Distributed Processing: to finish only one turning procedure

in one machine --- suitable for large quantity production.



Bearing Ring Turning Process

semi-

finished

ring

inner

face

Outer

facegrinding marking roller

rail

oil

grooveChamfer

Semi-

finished

products

Roller Turning Process

Steel

Material

Outer

Face

Cutting Outer

Face

Curvature Chamfer

Semi-

finished

Products

Usually, the equipments used are specially for bearing processing,

and are arranged according to the distributed procedure follow.



. Heat TreatmentHeat treatment is the key processing procedure to

enhance the bearing inner quality.

The main purposes of heat treatment:

1. To change the material structure through treat treatment so as to enhance its

mechanical performance.

2. To enhance the bearing inner quality (abrasive resistance, toughness, etc), so as to

enhance the bearing life span.

Semi-

finishedring

quenching cleaning tempering 2nd quenchingQuenched semi-

finished products

Bearing ring and roller heat treatment process

800840 190210



. Grinding

Grinding is the final processing of bearing ring and roller, it is called finished product

processing.

The main purposes of grinding process:

1. To make the bearing ring and roller be in accordance with the design requirements

in size and shape precision.

2. To prepare qualified rings and rollers for bearing assembly.

Grinding Normally, its processed by distributed procedure; or the machines canbe connected to integrate into a production line by material loading andunloading equipments so as to enhance the production efficient.



Bearing Ring Grinding Process

Roller Grinding Process

Quenched semi-

finished ringFacing

Inner or

Outer

Diameter

Roller

ChannelTempering

Roller

Channel

Grinding

Outer

Diameter

Finished

Ring for

ASSY

Quenched semi-

finished roller FacingOuter

Diameter

Vibrating

Finishing

Finished roller

for assembly


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Finished inner ring

and outer ring

Finished roller Cosmetic Inspection Roller diameter size selection

Inner ring and outer ring roller rail

inspection and size selection.

Roller diameter

size selection

Match clearance

Assemble

Cage

Final

Inspection

Final

InspectionCleaning

Anti-rust

Treatment

Vacuum Inner

Packaging

Outer

Packaging

Warehouse

storage or shipping

Bearing Assembly Process

Inner ring and outer ring

roller rail inspection and

size selection.

Bore diameter, outer

diameter and thickness

inspection.



Above is the simple presentation of bearing manufacture basicknowledge. Hope you have had a preliminary knowledge of bearing

manufacture.

Bearing manufacture has many processing procedures and requires

high machining precision even though the bearing is just common

standard component. In order to produce high quality and highprecision bearing products to meet customers requirements, in

addition to above work mentioned, we still have a lot of work to do as

a ball bearing manufacturer .

We, Fitrun Bearing Co., Ltd., will keep hard working to exceed

customers expectation. Our main bearing products are: deep grooveball bearing, flanged ball bearing and thrust ball bearing. They are

miniature sizes from BD of 1m to 12mm, and OD of 3mm to 40mm.

Documents

Ball Bearing Manufacturing Process 130930021744 Phpapp01