Home | About Us | Products | Workshop Equipment | Contact Us | Chinese
 
Deep Groove Ball Bearings
Special bearing
Miniature Ball Bearing 
Inch Bearing
Explain & Parameter
   The Scope of application
   Material
   Design&Exploitation
   Accuracy
     Radial internal clearanve
   Shield&Seal
   Vibration
   Package and Marks
   Luspection and test
   Lubrioation
   Specifications for General Purpose Grease
 Products Explain & Parameter
Package and Marks

  Bearings are packed into one plastic tube or wrapped by rustproof paper and packed into carton. Single package is also available, that is,each set bearing is contained into small plastic bag and then packed in little paper box.Please specify package made in order.
  Noticable marks are on the outside of bearing package,indicating quantity,mass,date,volume and model of bearing for customers, storage and classification.

Inspection and test

  In the whole course from purchasing of raw materials to every process of production, "NGGB" bearings are all strictly and carefully inspected to guarantee quality. Besides the basic and normally used tesing instruments,the company also abopts 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-11
High-speed digital display automatic analyser
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(Acceleration)
(Acceleration)Vibration and abnormal sound
8
BVT-1
Bearing vibration inspecting instrument(Speed)
(Speed)Vibration and abnormal sound