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4 Inch Grinding Steel Ball

The 4 Inch Grinding Steel Ball is forged from premium alloy steel using high-temperature forging techniques, resulting in a dense structure and superior mechanical performance. This makes the 4 Inch Grinding Steel Ball highly resistant to impact and wear, ideal for use in large-scale SAG and ball mills handling abrasive ores.

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Product Details

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Through strict heat treatment and quenching processes, the 4 Inch Grinding Steel Ball achieves consistent hardness from surface to core. This uniform hardness ensures extended service life, minimizes breakage, and allows the 4 Inch Grinding Steel Ball to deliver stable grinding efficiency even under continuous operation.

4 Inch Grinding Steel Ball

Application Insights

Machines	Industries
·Ball mills	·Mining industry
·SAG mills	·Power stations
·Tower mills	·Cement industry
·Coal grinding machine	·Steel Industry
·Bearing	·Chemical Industry
	·Metallurgical industry

Technical Highlights

Chemical Composition (%)
Steel Specification	C	Mn	Si	Cr	S	P
40Cr	0.37-0.44	0.50-0.80	0.17-0.37	0.80-1.15	≤0.035	≤0.035
42CrMo	0.38-0.45	0.50-0.80	0.17-0.37	0.90-1.25	≤0.035	≤0.035
60Mn	0.57-0.65	0.70-1.00	0.17-0.37	≤0.25	≤0.035	≤0.035
65Mn	0.62-0.72	0.90-1.20	0.17-0.37	≤0.25	≤0.035	≤0.035
ZT-4	0.44-0.72	0.50-0.90	0.17-0.37	≤0.50	≤0.035	≤0.035
ZT-10	0.60-0.78	0.65-1.33	0.25-0.65	≤0.45	≤0.035	≤0.035
B2	0.70-0.92	0.70-1.00	0.17-0.37	0.40-0.70	≤0.035	≤0.035
B3	0.52-0.65	0.66-1.00	1.30-1.90	0.74-1.20	≤0.030	≤0.030
B4	0.65-0.75	0.50-0.70	1.20-1.40	0.85-1.00	≤0.025	≤0.025
B6	0.75-0.90	0.80-1.02	0.17-0.37	0.88-0.98	≤0.035	≤0.035
BU	0.95-1.05	0.95-1.05	0.15-0.35	0.45-0.55	≤0.035	≤0.035
BL	0.55-0.75	0.65-0.85	0.15-0.35	0.70-1.20	≤0.035	≤0.035
BG	0.90-1.05	0.35-0.95	0.15-0.35	1.00-1.70	≤0.035	≤0.035

Physical Features
Diameter (mm) (inches)	Surface Hardness (HRC)	Diameter Tolerance (mm)	Impact Value (J/cm²)	Breakage Rate (%)	Drop Test (times)
20 (0.79)	>60	+2.0 -1.0	≥12	≤1	>15000
25 (0.98)
30 (1.18)
40 (1.57)
50 (1.97)
60 (2.36)		+3.0 -1.5
65(5.56)
70 (2.76)
75 (3.00)
80 (3.15)
90 (3.54)
100 (3.94)		+4.0 -2.0
120 (4.72)	>58
125 (4.92)
140 (5.51)	>55	+5.0 -3.0
150 (5.91)

Quality Monitoring System

Production Line Overview

Plants and Production Equipment

Exhibition Highlights

Exhibitions

Partnership Value

Each 4 Inch Grinding Steel Ball is precisely manufactured to meet tight diameter tolerances and roundness standards. The accurate 100mm size and smooth surface of the 4 Inch Grinding Steel Ball enhance mill performance, improve energy transfer, and increase overall mineral processing productivity.