Welcome to SOYA

SOYA Steel Ball Factory is China steel balls manufacturer & supplier. Our steel balls exported to 60 countries in past 36 years.

 

Stainless steel balls, Chrome steel balls, Carbon steel balls, Metal balls are our main products. Manufacture high precision steel balls & special metal balls in AISI304/316/316L/420/440C,
AISI52100/1010/1015/1045/1085, etc.
All metal balls meet grade standard in G5-G1000, from 0.1mm to 150mm.

WHY SOYA?

SOYA Steel Ball Factory have strong advantage and rich experience in steel balls industry.

                                                          Competitive prices benefit from strict cost control  

Strict cost control in each process, SOYA Steel Ball Factory can offer more competitive price of steel balls than traders and wholesalers.

                                               

All inch standard sizes steel balls in stock

All regular sizes are used for bearings, drawer slides, casters in stock , such as: 1/8" 5/32" 3/16" 1/4" 5/16" 3/8" 1/2" etc. Metal balls can be very fast delivery. Small qty stainless steel balls can be customized.

                                   

Harsh quality control in each process Production responsibility system in each process, SOYA Steel Ball Factory can produce high hardness, high precision steel balls.

 

Special material metal balls or stainless steel ball can be customized

SOYA Steel Ball Factory can produce special material metal balls, stainless steel balls, glass balls, plastic balls, grinding ball, steel shot. SOYA Steel Ball Factory can meet different metal balls application fields.

                                          


 

 

 

 


SOYA Steel Ball Factory can produce steel balls in various different materials:

 

 

Comparison Table of Steel Balls Materials

Country /

Standard
Chrome Steel Balls
Carbon Steel Balls
Stainless Steel Balls
America AISI 52100 1010 1015 1045 1085 302 304 316 420 440C
China YB GCr15 10 15 45 85 1Cr18Ni9 0Cr19Ni9 0Cr17Ni12Mo2 3Cr13 9Cr18
Japan JIS SUJ2 S9CK S15CK S45C SUP3 SUS302 SUS304 SUS316 SUS420J2 SUS440C
Germany DIN 100Cr6 CK10 CK15 CK45   X12CrNi188 X5CrNi189 X5CrNiMn18 X30Cr13  
1.3505         1.4300 1.4301 1.4401 1.4028  

 

SOYA Steel Ball Factory can produce steel balls in different grades according to standards:

 

Steel Balls Diameter Tolerance Grade Standard
Grade
Diameter variation
Spherical deviation
Surface roughness
Batch diameter variation
Basic diameter tolerance
Vdws
△sph
Ra
Vdwl
Tdn
Not More Than
μm
G10
0.25
0.25
0.025
0.5
*
G16
0.4
0.40
0.032
0.8
*
G20
0.5
0.50
0.04
1
*
G28
0.7
0.70
0.05
1.4
*
G40
1.0
1.00
0.08
2
*
G60
1.5
1.50
0.10
3
*
G100
2.5
2.50
0.125
5
+/-12.5
G200
5
5
0.2
10
+/-25
G500
13
13
*
25
+/-50
G1000
25
25
*
50
+/-125
* It means not applicable

 

 

Steel Balls Batch Diameter Variation

Commonly Used Gauge Values & Subdivision Gauge Values
Grade Batch Diameter Variation Vertical Spacing Commonly Used Gauge Values Subdivision Gauge Values Subdivision Gauge Values
μm
G10
0.5
1
 -9,...,-1,0,+1,...+9
0.2
 -0.4,-0.2,0,+0.2,+0.4
G16
0.8
2
 -10,...,-2,0,+2,...+10
0.4
 -0.8,-0.4,0,+0.4,+0.8
G20
1
2
 -10,...,-2,0,+2,...+10
0.4
 -0.8,-0.4,0,+0.4,+0.8
G28
1.1
2
 -12,...,-2,0,+2,...+12
0.4
 -0.8,-0.4,0,+0.4,+0.8
G40
2
4
 -16,...,-4,0,+4,...+16
0.8
 -1.6,-0.8,0,+0.8,+1.6
G60
3
5
 -20,...,-5,0,+5,...+20
1
 -2,-1,0,+1,+2

SOYA Steel Ball Factory can produce steel balls in commonly used standard sizes and non-standard sizes：

 

Balls Diameter Weight of 10,000 Balls(KG) How many Balls per 1 KG Balls Diameter Weight of 1000 Balls(KG) How many Balls per 1 KG Balls Diameter Weight of 1000 Balls(KG) How many Balls per 1 KG
0.5mm 0.0051 1960780 8mm 2.09 478

20.637mm

13/16 inch

35.80 27.90
0.68mm 0.0128 781250 8.5mm 2.50 400 21mm 37.75 26.49
0.8mm 0.0209 478470

8.731mm

11/32 inch

2.71 369

21.4313mm

27/32 inch

40.10 24.90
1mm 0.0408 245100 9mm 2.97 337

22.225mm

7/8 inch

44.80 22.30
1.2mmm 0.0705 141840

9.525mm

3/8 inch

3.52 284 23mm 49.59 20.17
1.3mm 0.0893 111980 10mm 4.08 245

23.0188mm

29/32 inch

49.80 20.10
1.45mm 0.124 80645

10.3188mm

13/32 inch

4.48 223

23.8125mm

15/16 inch

55.10 18.20

1.588mm

1/16 inch

 0.16 62350 11mm 5.42 185 24mm 56.34 17.75
1.75mm 0.218 45871

11.1125mm

7/16 inch

5.60 179

24.6063mm

31/32 inch

60.80 16.50
2mm 0.326 30700 11.5mm 6.22 161 25mm 63.68 15.70

2.3812mm

3/32 inch

0.550 18182

11.5094mm

29/64 inch

6.22 161

25.4mm

1 inch

66.80 15.00
2.5mm 0.637 15698

11.9062mm

15/32 inch

6.88 145

26.1938mm

11/32 inch

73.30 13.64
3mm 1.100 9091 12mm 7.04 142

26.9875mm

11/16 inch

80.20 12.47

3.175mm

1/8 inch

1.310 7634

12.3031mm

31/64 inch

7.60 132

27.7812mm

13/32 inch

87.40 11.40
3.5mm 1.750 5717

12.7mm

1/2 inch

8.35 120 28mm 89.47 11.18

3.969mm

5/32 inch

2.550 3922

13.4938mm

17/32 inch

 10.00 100

28.575mm

1-1/8 inch

95.20 10.50
4mm 2.610 3831 14mm 11.18 89

30.1625mm

1-3/16 inch

112.00 8.93

4.7625mm

3/16 inch

4.410 2268

14.2875mm

9/16 inch

11.90 84

31.75mm

1-1/4 inch

130.60 7.66
5mm 5.100 1961

15.0812mm

19/32 inch

14.00 71.40

33.3375mm

1-5/16 inch

151.10 6.62

5.1594mm

13/64 inch

5.600 1786

15.875mm

5/8 inch

16.30 61.30

34.925mm

1-3/8 inch

173.80 5.75

5.5562mm

7/32 inch

6.990 1431 16mm 16.69 59.90

36.5125mm

1-7/16 inch

198.60 5.04

5.9531mm

15/64 inch

8.600 1163

16.6688mm

21/32 inch

18.90 52.90

38.1mm

1-1/2 inch

225.60 4.43
6mm 8.810 1136 17mm 20.02 50.00 40mm 261.10 3.83

6.35mm

1/4 inch

10.400 962

17.4625mm

11/16 inch

21.70 46.10

41.275mm

1-5/8 inch

286.80 3.49
6.5mm 11.190 894

18.2562mm

13/32 inch

24.80 40.30

42.8625mm

1-11/46 inch

321.20 3.11

6.7469mm

17/64 inch

12.500 800 19mm 27.96 35.77

44.45mm

1-3/4 inch

358.20 2.79

7.1438mm

9/32 inch

14.900 671

19.05mm

3/4 inch

28.20 35.50

47.625mm

1-7/8 inch

440.60 2.27

7.9375mm

5/16 inch

20.400 490

19.9438mm

25/32 inch

31.90 31.40

50.8mm

2 inch

534.70 1.87

 

 

Please click on the steel ball details page to check more chemical analysis and physical properties:

 

 

 

 

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