Beijing Zhongxing Shiqiang CERAMIC BEARING Co., Ltd.
Beijing Zhongxing Shiqiang Ceramic Bearing Co.,Ltd
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Ceramic Bearing 6805 Of Si3N4 Races And Balls + Cage With P6/ABEC3 Precision
Description of Ceramic Bearing 6805:
Si3N4 races and balls: Are made of highly purified, submicron silicon nitride powder and is processed after HIP (Hot Isostatic Pressure) sintering technology. So the porosity, wear resistance, crushing value and fatigue contact life have been greatly improved.
cage: has resistance to many kinds of acid and alkali and high temperature resistance, Electrical insulation and good resistance to aging. So it's a ideal material for cages of ceramic bearings.
Performance advantages of Ceramic Bearing 6805:
Ceamic bearing in material of silicon nitride has a small volume density, light weight structure, resistance to dry friction, low coefficient of linear expansion, self-lubrication, high fatigue life. They have high hardness, wear-resistance, resistance to a variety of strong acid, strong alkali, salt corrosion (in addition to hydrofluoric acid, nitric acid), non-magnetic, non-conductive, high insulation, high temperature resistance to about 1000 ℃ and etcs.
| Ceramic | Bearings | Dimension | Reference | |
| Bearings Model | Load Rating (Ref.) | Load Rating (Ref.) | Max Speed (Ref.) | Max Speed (Ref.) |
| Cr(N) | Cor(N) | Grease (rpm) | Oil (rpm) | |
| 61805CE | 3225 | 2940 | 18000 | 24200 |
Application of Ceramic Bearing 6805:
Because of the excellent properties of silicon nitride, All-Si3N4 bearings are suitable for high-speed, alternating load environment, so they are widely used as high-speed spindle, electric spindle, CNC machine tool and motorized spindle bearings.
| ► Key properties of hot isostatic sintered silicon nitride |
| ♦ Max temperature to 1000℃ |
| ♦ High strength over a wide temperature range |
| ♦ High fracture toughness: 6.1 MPa-m1/2 |
| ♦ High hardness: 1580 HV5 |
| ♦ Outstanding wear resistance, both impingement and frictional modes |
| ♦ Good thermal shock resistance |
| ♦ Good chemical stability,resistance to acid and alkali corrosion |
| ♦ Good electric insulation |
