Metal balls are rolling, spherical elements that are used in check and ball valves, bearings, and other mechanical devices that provide rotary or linear motion. They are usually made from alloy steel, carbon steel or stainless steel. Metal balls are characterized by the Outer Diameter, Permissible Deviation, Surface Roughness and Tolerance. The Outer Diameter (OD) is the overall width or average diameter of the ball. Permissible Deviation is the greatest radial distance in a radial plane between a sphere around the metal ball surface and any point on the ball surface. Surface Roughness measures the irregularities that form on the surface, but are not significant deviations. Basic diameter Tolerance is the maximum allowable deviation average diameter from the diameter specified. SZDO Bearings stocks a wide assortment of 52100 Chrome Steel Balls, 440C Stainless Steel Balls and Carbon Steel Balls.
| 1.Chrome bearing steel balls |
| 1. Material | AISI 52100/ 100Cr6/ 100C6/ SUJ2/ Wks 1.3505 |
| 2. Size Range | 0.6mm-180mm |
| 3. Grade | G10-1000 |
| 4. Hardness | 58-65 HRC |
| 5. Characteristic | (a)Mainly used in bearings |
| (b)Good hardness |
| (c)Good resistance to deformation with excellent wear resistance |
| (d)Low corrosion |
| 6. Magnetic | Yes |
| 7. Application | Ball bearings, bicycles, automobile industry |
| 8. Chemical composition |
| C% | Si% | Mn% | S% | P% | Cr% | Mo% | Cu% | Al% | O% |
| min. | 0.93 | 0.15 | 0.25 | --- | --- | 1.35 | --- | --- | --- | --- |
| max. | 1.05 | 0.35 | 0.45 | 0.015 | 0.025 | 1.65 | 0.1 | 0.3 | 0.05 | 0.0015 |
| 9.Packing | Standard: 10kg or 20kg per carton,1 ton per pallet or as customer required |
| 10.Conditioning | dry or oiled |
| 2.High Carbon Steel Balls |
| 1. Material | AISI1086/ C85/ 1.0616/ EN8-9/ Wks 1.1269 |
| 2. Size Range | 1mm-180mm |
| 3. Grade | G40-1000 |
| 4. Hardness | 60 min. HRC (Surface-hardend) |
| 5. Characteristic | (a)Core-hardened |
| (b)Low resistance to corrosive attack |
| (c)Higher Load and longer life than low carbon steel ball |
| 6. Magnetic | Yes |
| 7. Application | Low precision bearings, furniture bearings, bicycle and automotive components, agitators, sliding rails, drawer rails, skates, roller conveyors, castors, locks, bearing units, polishing and milling machines. |
| 8. Chemical composition |
| 聽 | C% | Si% | Mn% | Cr% | Ni% | Mo% | P% | S% | Al% | O% |
| min. | 0.83 | 0.1 | 0.5 | --- | --- | --- | 聽 | --- | --- | --- |
| max. | 0.83 | 0.3 | 0.8 | 0.15 | 0.2 | 0.05 | 0.035 | 0.035 | 0.01 | 0.25 |
| 9.Packing | Standard: 10kg or 20kg per carton,1 ton per pallet or as customer required |
| 10.Conditioning | dry or oiled |
| 3.Low Carbon Steel Balls |
| 1. Material | AISI1010/ AISI1015/ C15/ 1.0413/ JIS SWRM 12/ EN32 ASTM A/29 |
| 2. Size Range | 1mm-180mm |
| 3. Grade | G40-1000 |
| 4. Hardness | 60 min. HRC (Surface-hardend) |
| 5. Characteristic | (a)Casehardened surface balls and low hardness core |
| (b)superficial hardness |
| (c)Low resistance to corrosive attack |
| 6. Magnetic | Yes |
| 7. Application | Low quality bearing, oiler, roller, sliding block… |
| 8. Chemical composition |
| C% | Si% | Mn% | Cr% | Ni% | Mo% | P% | S% | Al% | O% |
| min. | 0.12 | --- | 0.3 | --- | --- | --- |
| --- | --- | --- |
| max. | 0.17 | 0.3 | 0.6 | 0.2 | 0.25 | 0.05 | 0.035 | 0.035 | 0.01 | 0.3 |
| 9.Packing | Standard: 10kg or 20kg per carton,1 ton per pallet or as customer required |
| 10.Conditioning | dry or oiled |
