AISI 630 Stainless Steel Ball Bearings
AISI 630 stainless steel is excellent in corrosion resistance and can be hardened by heat treatment. AISI 630 stainless steel ball bearings can offer longer operation life under various corrosive environments with the excellent corrosion resistance and hardness.
Features
- Corrosion resistance superior to AISI 440C stainless steel ball bearings
- Can be used for heavy-load and high-rotation applications for which AISI 304 stainless steel ball bearings would be unsuitable.
- Available for various types of applications with its heat- and chemicalresistant fluorine grease pre-packed as standard lubricant
- Hybrid type with silicon nitride ceramic balls
- Different properties due to the material used
| AISI 630 | AISI 304 | AISI 440C | ||
|---|---|---|---|---|
| Specific Gravity | 7.80 | 7.93 | 7.80 | |
| Tensile Strength | N/mm2 | 1379 | 520～600 | 1900～2000 |
| Elongation | % | 14 | 45 60 | --- |
| Elastic Modulus | N/mm2 | 196000 | 193000 | 203000 |
| Hardness | HV | 434 | 170 | 700 |
| HRC | 44.0 | 3.0 | 60.1 | |
| Magnetism | Magnetic | Non Magnetic | Magnetic |
Specification
| Inner and Outer Rings | AISI 630 |
| Ball | Ceramic Balls |
| (Silicon Nitride Si3N4) | |
| Retainer | AISI 304 |
| Shield | AISI 304 |
| Seal *1 | Nitrile Rubber (NBR) |
| Lubricant *2 | Fluorinated Grease |
| Precision Grade | JIS0 |
Products with specifications differing from the above are also available.
*1 Also available with fluorine rubber seals.
*2 Other special grease also available.
Applications
LCD and semiconductor manufacturing equipment
Film manufacturing equipment
Metal plating equipment
Other equipment used in acid or alkaline environment
Dimensions
| Bore | O.D. | Width | Chamfer | Dynamic Load | Static Load | Limiting Speed (min-1) | |||||
| d | D | B | r min. | Cr | Cor | Grease | Oil | ||||
| mm | mm | mm | mm | N | kgf | N | kgf | open/ZZ | 2RS | open | |
| 4S 6000 CB | 10 | 26 | 8 | 0.3 | 1410 | 144 | 610 | 62 | 8400 | 8400 | 10000 |
| 4S 6200 CB | 10 | 30 | 9 | 0.6 | 1590 | 162 | 740 | 75 | 7300 | 7300 | 8800 |
| 4S 6001 CB | 12 | 28 | 8 | 0.3 | 1590 | 162 | 740 | 75 | 7300 | 7300 | 8800 |
| 4S 6201 CB | 12 | 32 | 10 | 0.6 | 2110 | 215 | 940 | 96 | 6800 | 6800 | 8200 |
| 4S 6002 CB | 15 | 32 | 9 | 0.3 | 1730 | 177 | 880 | 90 | 6400 | 6400 | 7700 |
| 4S 6202 CB | 15 | 35 | 11 | 0.6 | 2370 | 241 | 1150 | 118 | 5900 | 5900 | 7100 |
| 4S 6003 CB | 17 | 35 | 10 | 0.3 | 1860 | 190 | 1010 | 103 | 5800 | 5800 | 6900 |
| 4S 6203 CB | 17 | 40 | 12 | 0.6 | 2970 | 300 | 1480 | 151 | 5200 | 5200 | 6200 |
| 4S 6004 CB | 20 | 42 | 12 | 0.6 | 2910 | 297 | 1570 | 160 | 4800 | 4800 | 5700 |
| 4S 6204 CB | 20 | 47 | 14 | 1 | 4000 | 405 | 2060 | 210 | 4300 | 4300 | 5200 |
| 4S 6005 CB | 25 | 47 | 12 | 0.6 | 3100 | 320 | 1810 | 185 | 4200 | 4200 | 5000 |
| 4S 6205 CB | 25 | 52 | 15 | 1 | 4350 | 445 | 2440 | 249 | 3800 | 3800 | 4600 |
| 4S 6006 CB | 30 | 55 | 13 | 1 | 4100 | 420 | 2570 | 262 | 3500 | 3500 | 4200 |
| 4S 6206 CB | 30 | 62 | 16 | 1 | 6050 | 615 | 3500 | 360 | 3200 | 3200 | 3900 |
Note: The above load ratings are provided for reference only.
AISI 630 stainless steel ball bearings are by nature unusable in the high and middle speed applications or under the load that AISI 440C stainless steel ball bearings can carry.
Corrosion Resistance
| Materials | Conditions | Corrosion Weight Loss (mm/year) | ||||||||
| Sulfuric Acid | Hydrochloric Acid | Nitric Acid | Acetic Acid | Phosphoric Acid | ||||||
| 5% 35℃ | 1% 80℃ | 2% 80℃ | 0.5% 35℃ | 1% boiling | 66% boiling | 33% boiling | 20% boiling | 70% boiling | ||
| SUS 630 | Aging Heat Treatment | 0.1 | <0.1 | 0.2 | <0.1 | 0.9 | 0.7 | 1.5 | <0.1 | 3.0 |
| SUS 304 | Solution Heat Treatment | <0.1 | 0.6 | 2.0 | 0.2 | 0.4 | 0.2 | <0.1 | <0.1 | 1.0 |
Note that results may differ from the data listed, depending on the environment and conditions under which the bearings are used.