Customized High End Large Size Bearing Part Cylindrical Rollers

  • Customized High End Large Size Bearing Part Cylindrical Rollers
  • Customized High End Large Size Bearing Part Cylindrical Rollers
  • Customized High End Large Size Bearing Part Cylindrical Rollers
  • Customized High End Large Size Bearing Part Cylindrical Rollers
Customized High End Large Size Bearing Part Cylindrical Rollers
  • CHG
  • LuoYang, China

cylindrical rollers
Diameter 5.0 mm to 25.0 mm
Length 8.0 mm to 60.0 mm
Roundness < 1 µ.m.
Roughness < 0.20 µ.m.
Face square ness < 3 µ.m.

Customized High End Large Size Bearing Part Cylindrical Rollers

The accuracy of the roller can reach the national standard level 1, the roundness of the roller can reach 0.002mm, the taper can reach 0.002mm, the coaxiality (wall thickness tolerance) can reach 0.06mm, and the convexity deviation of each measuring point can be controlled within ±0.001mm. The ball base surface runout is within 0.004mm, and the ball base surface SR deviation can be controlled within 1%.

1.What material are rollers made of?

Small rollers are generally produced by GCr15, Medium rollers are produced by GCr15SiMn, and large rollers are produced by G20Cr2Ni4A.

2. What are the advantages of roller bearings compared to ball bearings?

Compared with ball bearings, the rolling elements are cylindrical rollers or tapered rollers, which can withstand greater loads.

3. Why the roller outer diameter profile adopt a logarithmic curve?

Compared with ordinary relieved end roller, Logarithmic profile rollers can make the stress distribution even at the contact point between the roller and the raceway, thereby significantly improving the life of the bearing.


customized cylindrical rollers


Introduction of Cylindrical Rollers:

CHG self-produced large-scale high-end tapered rollers and cylindrical rollers have an accuracy of level 1 of the national standard; the size range is φ20~φ120mm. The bus bar of the cylindrical and tapered rollers has realized a logarithmic curve, and the deviation of the crown value of each measurement point is controlled within ±0.001mm Within, it can be used under various harsh working conditions.

Cylindrical rollers and tapered rollers are mainly used in wind power main shaft bearings, high-end rolling mill bearings and other fields.


bearing parts rollers


large size cylindrical Rollers


Processing process of bearing rollers as follows:

Tapered rollers are blanked using a cold heading process (in view of their rough overall shape). Several subsequent operations, including specialized grinding, will produce parts with close tolerances. Bearing-grade chromium steel is usually selected as the material because of its wide availability and high mechanical properties (tensile strength, hardness, wear resistance).

Standard materials: bearing-grade chromium steel, carbon steel

All our cylindrical rollers are manufactured to order. CHG will work with you to design cylindrical rollers that meet your specific requirements.

Feeding (straightening, chamfering)-    stamping forming-removing the ring belt-   selecting the material head-soft grinding outer diameter-soft grinding end face-heat treatment-oxide scaling-rough grinding outer diameter-channeling Soft point-soft point inspection-hot cleaning and rust prevention-grinding end face-hot cleaning and rust prevention-fine grinding outer diameter-final grinding outer diameter-super fine outer diameter-hot cleaning, dry cleaning- -Final inspection selection-oiled packaging. For the convenience of analysis, the manufacturing process can be divided into six stages: blank processing-soft grinding before heat treatment-heat treatment-hard grinding after heat treatment-finishing-quality inspection and selection.

Technical Specification of Cylindrical Bearing Rollers

Note: Below Given Chart is Generic Specifications are depending on specific requirements.

Sr No.

Parameter

Tolerence

1

Diameter

In 2μm Group

2

Ovality

1μm (Maximum)

3

Length (Tolerance on Basic Size)

– 20μm (Maximum), Grouping Within 6μm

4

Face Squareness

6μm (Maximum)

5

Od S/Roughness (Ra)

0.10μm (Maximum)

6

Face S/Roughness (Ra)

0.20μm (Maximum)

7

Roundness (Filter: 1-15)

1μm (Maximum)

8

Hardness

60 To 64 HRC

9

Visual Inspection

Free from Rust, Dent Marks, Spiral Lines on OD, Out of Radius

10

Material

SAE 52100

11

Micro Structure

Fine Tempered Martensite with Undissolved Carbides

12

Crowning (Pt)

Depend on Ground Length

Company Product Introduction

CHG provides tapered rollers with customized dimensions (diameter, length, angle).

The manufacturing process of tapered rollers varies with the precision grade, size, production batch and processing methods of the rollers, but the basic manufacturing process is roughly the same.


Tapered rollers are blanked using a cold heading process (in view of their rough overall shape). Several subsequent operations, including specialized grinding, will produce parts with close tolerances. Bearing-grade chromium steel is usually selected as the material because of its wide availability and high mechanical properties (tensile strength, hardness, wear resistance).


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