Industrial Materials
Grinding Media

Specifications

high performance grinding media steel ball 
1) Diameter25mm~150mm 
2) Characteristics: 
a) even hardness b)no deformation

high performance grinding media ball

 

1) Diameter: 25mm~150mm

 

2). Characteristics:

 

a) even hardness b)no deformation c) No breaking d) No mal-roundness F)grinding resistant G) low wear rate

 

3). Applied fields:

 

a) Metal Mines b) Cement plants c) Water coal slurry d) Power stations e) Chemical industry

 

 

The main products of Jinan Jinchi Steel Ball Co.,Ltd. are forged steel balls, casting steel balls. The company has been accredited with ISO9001 quality certification.

 

 Forged grinding balls 

 

Chemical elements of forged steel balls

 

Name

C

Mn

Si

Cr

S

P

60Mn

0.57-0.65

0.70-1.0

0.17-0.37

0.25max

0.035max

0.035max

65Mn

0.60-0.70

0.90-1.2

0.17-0.37

0.25max

0.035max

0.035max

75MnCr

0.70-0.85

0.70-0.85

0.17-0.37

0.40-0.60

0.030max

0.030max

Specification of forged steel Grinding balls

Nominal diameter

Diameteical

Tolerance

Weight of single ball in average

Surface hardness

Impact toughness

(mm)

(mm)

(g)

(HRC)

(j/cm)

Φ20

+2      -1

32

 

 

 

 

55-65

 

 

 

 

≥12

Φ25

64

Φ30

110

Φ40

263

Φ50

513

Φ60

+3    -2

888

Φ70

1410

Φ80

2104

Φ90

2996

Φ100

4110

Φ110

+4     -2

5457

50-60

Φ120

7102

Φ130

9030

Φ140

+4    -3

11278

Φ150

13871

 

 

 Casting grinding balls

 

Item

Chemical Composition(%)

C

Si

Mn

Cr

P

S

Mo

Cu

Ni

 

JCCr13

2.0-3.0

≤0.10

0.5-1.5

10-14

≤0.10

≤0.10

1.0Max

2Max

0-1.5

High chrome

cast grinding balls

JCCr17

2.0-3.0

≤0.10

0.5-1.5

14-17

≤0.10

≤0.10

3.0Max

1 Max

0-1.5

JCCr20

2.0-2.8

≤0.10       

0.5-1.5

18-22

≤0.10

≤0.08

2.5 Max

1 Max

0-1.5

JCCr26

2.0-2.8

≤0.10

0.5-1.5

22-28

≤0.10

≤0.08

3 .0Max

2 Max

0-1.5

 

 

 

Item

Brand

C

Si

Mn

Cr

P

S

Mo

Cu

0-1.5

Middle Chrome Cast Grinding Balls

JCCr7

2.1-3.2

0.5-2.2

0.5-1.5

6~10

≤0.10

≤0.10

0-1.0

0-0.8

0-1.5

Item

Brand

C

Si

Mn

Cr

P

S

Mo

Cu

Ni

Low Chrome Cast Grinding Balls

JCCr2

2.2-3.6

≤1.2

0.5-1.5

1.0-3.0

≤0.10

≤0.10

0-1.0

0-0.8

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