Rolled bearing steel with special finishing in bars
GOST 801
Purpose
Rolled products are intended for the manufacture of rolling elements (balls and rollers) of bearings.
Characteristics
Packaging and labeling
Packaging
Specifications
Technical parameters of rolled products:
|
Ø rolled products, mm |
Bar length, m |
Length tolerance, mm |
Bundle weight, tn |
|
12 ÷ 34 |
2,5 ÷ 6,5 |
-0,0/+50,0 or -0,0/+100,0 |
1 ÷ 5 |
Accuracy quality and surface quality:
|
Rolled accuracy (quality) |
Surface quality group |
|
h10; h11; h12 |
C |
The limit deviations according to GOST 14955:
|
Diameter, mm |
Maximum deviations by quality, mm |
|||
|
h9 |
h10 |
h11 |
h12 |
|
|
9,00 – 10,00 |
-0,036 |
-0,058 |
-0,090 |
-0,150 |
|
10,25 – 11,00 |
-0,043 |
-0,070 |
-0,110 |
-0,180 |
|
11,25 – 18,00 |
-0,043 |
-0,070 |
-0,110 |
-0,180 |
|
18,50 – 24,00 |
-0,052 |
-0,084 |
-0,130 |
-0,210 |
|
25,00 – 30,00 |
-0,052 |
-0,084 |
-0,130 |
-0,210 |
|
31,00 – 50,00 |
-0,062 |
-0,100 |
-0,160 |
-0,250 |
Rolled surface quality according to GOST 14955:
|
Steel surface finishing group |
Qualifications |
Surface roughness according to GOST2789-73 |
Name of permissible surface defects |
Maximum depth of permissible defects |
|
|
Parameter Ra, microns no more |
Base length, mm |
||||
|
A |
h5, h6, h7, |
0,32 |
0,25 |
Defects are not allowed |
Defects are not allowed |
|
h8, h9, h10 |
|||||
|
B |
h6, h7, h8, |
0,63 |
0,8 |
||
|
h9, h10, h11 |
|||||
|
C |
h7, h8, h9, h10, h11 |
1,25 |
0,8 |
||
|
G |
h8, h9, h10, h11 |
2,5 |
0,8 |
Individual defects of mechanical origin |
½ of the maximum deviation in diameter |
|
D |
h9, h10, h11, h12 |
- |
- |
Individual defects of mechanical origin |
Maximum deviation in diameter |
|
E |
h8, h9 |
- |
- |
Longitudinal risks |
½ of the maximum deviation in diameter |
You can find all the information about our products in the uploaded catalogue. There you may become acquainted with detailed information on each product field, technical specifics of every product and our reference projects. If you cannot find your product of interest, do not hesitate to contact us and we will do our best to meet your requirements.
Product catalog
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Certificates and documents
How to buy?
Information for clients
