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Steel with Special Surface Treatment (Peeled)

Bearing Steel with Special Surface Treatment (Peeled) in Coils

GOST 801

Application:

Used for manufacture of rolling elements (balls, rollers) and races of bearings

Description:

The product is made of bearing steel in accordance with GOST 801 or specifications agreed by customer

Steel grades:

“ШХ15В” (rus) - eq. to 100Cr6; “ШХ15СГВ” (rus) - eq. to 100CrMn6

Specifications:

Size, mm

Coil diameter (inner), mm

Coil diameter (outer), mm

Weight of coil, kg

Weight of bundle, tons

8,6 ÷ 16,2

700 ÷ 1100

900 ÷ 1400

100 ÷ 830

0,1 ÷ 5,0

Mechanical properties - according to GOST 801 or specifications agreed by customer

Tolerance classes and surface quality:

Tolerance class

Class of surface quality

h10; h11; h12

“В” (rus) - class 3

Tolerance classes in accordance with GOST 14955 (eq. to EN 10278, ISO 286-2):

Nominal dimension, mm

Tolerance (max), 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

Surface quality in accordance with GOST 14955:

Class of surface quality

Tolerance class

Surface roughness in accordance with GOST2789-73

Surface defects

Maximum depth of permissible surface defects

Ra max, mkm

Basic line, mm

“А” (rus) - class 1

h5, h6, h7,

0,32

0,25

No defects allowed

No defects allowed

h8, h9, h10

“Б” (rus) - class 2

h6, h7, h8,

0,63

0,8

h9, h10, h11

“В” (rus) - class 3

h7, h8, h9, h10, h11

1,25

0,8

“Г” (rus) - class 4

h8, h9, h10, h11

2,5

0,8

Specific surface defects of mechanical origin

½ tolerance

“Д” (rus) - class 5

h9, h10, h11, h12

-

-

Specific surface defects of mechanical origin

Tolerance (maximum deviation from a nominal dimension)

“Е” (rus) - class 6

h8, h9

-

-

Longitudinal scratches

½ tolerance

Conditions of delivery and packaging:

Condition of delivery

Steel without heat treatment

Heat-treated steel

Packaging

Recrystallisation annealing

Spheroidising annealing

Without corrosion protection

With corrosion protection

Soft packaging without corrosion protection

Soft packaging with corrosion protection

 

 

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Bearing Steel with Special Surface Treatment (Peeled) in Coils GOST 801