Active Member
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[China]
Address: Cixi Henghe Industrial Zone, Bearing Road NO.20, Zhejiang, China
Contact name:Hu
NINGBO DONGHUANG BEARING CO.,LTD. |
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1.National Standards of Radial Clearance
| Bore | C2 | C0 | C3 | C4 | C5 | ||||||||
| Over | Including | ||||||||||||
| mm | Inch | mm | Inch | Min | Max | Min | Max | Min | Max | Min | Max | Min. | Max |
| 2.5 | 0.0984 | 10 | 0.3937 | 0 | 7 | 2 | 13 | 8 | 23 | 14 | 29 | 20 | 37 |
| 10 | 0.3937 | 18 | 0.7087 | 0 | 9 | 3 | 18 | 11 | 25 | 18 | 33 | 25 | 45 |
| 18 | 0.7887 | 24 | 0.9449 | 0 | 10 | 5 | 20 | 13 | 28 | 20 | 36 | 28 | 48 |
| 24 | 0.9449 | 30 | 1.1811 | 1 | 11 | 5 | 20 | 13 | 28 | 23 | 41 | 30 | 53 |
| 30 | 1.1811 | 40 | 1.5748 | 1 | 11 | 6 | 20 | 15 | 33 | 28 | 46 | 40 | 64 |
| 40 | 1.5748 | 50 | 1.9685 | 1 | 11 | 6 | 23 | 18 | 36 | 30 | 51 | 45 | 73 |
| 50 | 1.9685 | 65 | 2.5591 | 1 | 15 | 8 | 28 | 23 | 43 | 38 | 61 | 55 | 90 |
2.Useing Applications.
| The usage situation | Use examples | Choose clearance |
| Strict control noise, vibration installation precision, high position | Instrument and equipmentRoll neck calender Low noise and small motor | C2,C0 |
| General load, speed, working temperature is not high | Transmission machinery, reducer and other general machinery | C0 |
| High temperature, high speed, high requirements for service life | Automobile generator and engine | C3 |
| Using high temperature environment, should not be the occasion of heat | Drying machine, paper making machinery, and so on | C3,C4 |
| High temperature, high speed, and large impact load | Vibrating screen, speed gear
| C4 |
| Inner and outer ring take the surplus interference, large volume, high temperature, heat dissipation | Vibration type pressure road, machine car rear wheel | C5 |
3.Greases and WorkingTtemperature.
| Brand | Products | Base oil | Range of using temperature | Character |
KYODO YUSHI | Multemp SRL | Polyol ester+Diester | -50~+150 | Can effectively restrain the noise, prolong service life |
| Multemp PS | Diester+refined mineral oil | -50~+130 | Suitable for low temperature, and restrain the noise effectively | |
| Multemp SM-B | Synthetic hydrocarbon | -50~+200 | Long life in the high temperature operation, appropriate used in low temperature, low torque in high speed running, low noise | |
| Multemp ET-K | Synthetic ether+Polyol ester | -40≥~+200 | High temperature condition continued work, having longer life | |
| RAREMAX SUPERN | Synthetic oil | -30~+200 | High temperature longevity grease | |
EXXON MOBILE | Polyrex EM | Mineral grease | -40~+180 | Long life and resist to high temperature |
| Beacon325 | Synthetic grease | -54~+150 | Common use grease | |
| Andok C | Petroleum oil | -27~+120 | Move smoothly and when minimum sliding, has long service life | |
EXXON MOBILE | Mobile 28 | Synthetic hydrocarbon | -54~+177 | Wide temperature range and low torque |
| (MIL-G-81322) | ||||
| Mobil HP | Lithium compounds | -30~+110 | Moderate speed and inhibit the corrosion effectvely | |
| CHEVRON | SRI-2 | Mineral grease | -30~+180 | Wode temperature range, waterproof effect is good |
| SHELL | Alvania 2 | Mineral grease | -35~+120 | Long life and resist to high temperature |
| RLQ#2 | Mineral grease | -50~+150 | Low noise, fast speed, and resistant high temperature | |
| DUPONT | Krytox 240AC | Fluoride grease | -35~+290 | Stability effect is good in high temperature, and lubrication effect is strong |
| KLUBER | ASONIC | Synthetic hydrocarbon | -50~+140 | Low noise, long life and low torque |
