1) Low noise precision bearings
2) Bearing type: 6211
3) Model: Open, ZZ, 2RS
4) Brand : JUF or As customers'
5. Material Composition GCR15
2) Bearing type: 6211
3) Model: Open, ZZ, 2RS
4) Brand : JUF or As customers'
5. Material Composition GCR15
Chemical Composition(%) | ||||||
STEEL NO | C | Si | Mn | P | S | Cr |
GCr15 | 0.95-1.05 | 0.15-0.35 | 0.25-0.45 | 0.025 | 0.025 | 1.40-1.65 |
6. Printing Words : we can print the any words on products under authorization legally.
7. Samples Policy : please arrange the sample cost and freight or freight collected. we will reduct this part expense from the total value of our first order.
8.Quality Guarantee : The items can be replaced or refunded beause of quality problem within one year from the date the buyer get the goods .
Packaging More Detail:
Packaging More Detail:
1.Plastic tube: 10pcs/tube or 5pcs/tube
2.Single box: plastic bag+single box, OEM supply
3.Carton: Standard export carton or as your need
Inspection and Test
In the whole course from purchasing of raw materials to every process of production, "LB"Brand besrings are all strictly and carefully inspected to guarantee quality.Besides the basic and normally used testing instruments,the company also adopts the following testing and inspecting instruments to control the production processes and finished products.
No. Model No.of instrument
Name of instrument Test item
(1): HV-4B Pc high-speed automatic carbon and sulfur analyser Chemical composition of raw material
(2): HC-II High-speed digital display automatic analyzer
(3): 4X1 Metallurgical microscope Analysis of material and metallurgical structure
(4): Y9025 Roundness measuring equipment Roundness of groove and outer diameter
(5): R902 Groove curvature inspecting instrument Groove curvature and groove shape
(6): SRM-1 Surface roughness inspecting instrument Roughness of groove and surface
(7): S0910 Bearing vibration inspecting instrument (Accelerationg)vibration and abnormal sound
(8): BVT-1 Bearing vibration inspecting instrument (speed) vibration and abnormal sound
No. Model No.of instrument
Name of instrument Test item
(1): HV-4B Pc high-speed automatic carbon and sulfur analyser Chemical composition of raw material
(2): HC-II High-speed digital display automatic analyzer
(3): 4X1 Metallurgical microscope Analysis of material and metallurgical structure
(4): Y9025 Roundness measuring equipment Roundness of groove and outer diameter
(5): R902 Groove curvature inspecting instrument Groove curvature and groove shape
(6): SRM-1 Surface roughness inspecting instrument Roughness of groove and surface
(7): S0910 Bearing vibration inspecting instrument (Accelerationg)vibration and abnormal sound
(8): BVT-1 Bearing vibration inspecting instrument (speed) vibration and abnormal sound
Installation
The bearing installation has close relationships with the accuracy, life and performance. Therefore the design and assembly departments should fully research into the bearing installation.
It is better to implement installation according to the operation standard. The items of the operation standard are usually as follows:
(1) Clean bearing and its related parts
(2) Check the size and finishing conditions of the related parts
(3) Installation
(4) Examine bearings after installation
(5) Feed the lubricant
The bearing packing should be opened shortly before installation. There is no need for cleaning to ordinary lubricating grease lubrication, direct-filling of lubricating grease or lubricating oil. Whereas it should use the clean oil to rinse the instrument purpose bearing or high speed purpose bearing etc. and get rid of the anti-rusting agent on the bearing. The bearing easily gets rusty without rust inhibitor. Therefore special care should be taken to such kind of the bearing.
What is more, the bearing which has been sealed with lubricating grease can be put into direct use with no cleaning at all.
The installation methods of the bearing vary according to the difference in the bearing structure, matching, condition. As it is mostly of axle rotation, the inner ring needs interference fit. The cylindrical bore bearing is commonly pressed in by pressing machine or most probably, it adopts the heat installation method. The taper hole can be directly installed in the taper axle. When it has been mounted to outer casing, usually it has excess clearance fit, the outer ring has shrink range, it will be pressed in
It is better to implement installation according to the operation standard. The items of the operation standard are usually as follows:
(1) Clean bearing and its related parts
(2) Check the size and finishing conditions of the related parts
(3) Installation
(4) Examine bearings after installation
(5) Feed the lubricant
The bearing packing should be opened shortly before installation. There is no need for cleaning to ordinary lubricating grease lubrication, direct-filling of lubricating grease or lubricating oil. Whereas it should use the clean oil to rinse the instrument purpose bearing or high speed purpose bearing etc. and get rid of the anti-rusting agent on the bearing. The bearing easily gets rusty without rust inhibitor. Therefore special care should be taken to such kind of the bearing.
What is more, the bearing which has been sealed with lubricating grease can be put into direct use with no cleaning at all.
The installation methods of the bearing vary according to the difference in the bearing structure, matching, condition. As it is mostly of axle rotation, the inner ring needs interference fit. The cylindrical bore bearing is commonly pressed in by pressing machine or most probably, it adopts the heat installation method. The taper hole can be directly installed in the taper axle. When it has been mounted to outer casing, usually it has excess clearance fit, the outer ring has shrink range, it will be pressed in
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