627 deep groove ball bearing specification
| Deep Groove Ball Bearings No. | I.D | O.D | B | |||
| d | d | Open type | ||||
| mm | inch | mm | inch | mm | inch | |
| 627 | 7 | 0.2756 | 22 | 0.8661 | 7 | 0.2756 |
| Deep Groove Ball Bearings No. | B | Load Rating(KN) | Steel Ball Parameter | |||
| Closed type | Dynamic | Static | No. | Size | ||
| mm | inch | Cr | Cor | mm | ||
| 627 | 7 | 0.2756 | 3.29 | 1.36 | 7 | 3.969 |
| Deep Groove Ball Bearings No. | Max speed | Weight Kg | ||||
| Grease | Oil | |||||
| r/min | r/min | |||||
| 627 | 31000 | 36000 | 0.0131 | |||
Use of machinery and design life of 627 bearing:
When selecting bearings, the design life of the bearing under the conditions of use must be set. The design life is determined based on the durability required by the mechanical device itself and the reliability during operation. The commonly used design life reference values are listed in the following table . When determining bearing size, the service life of the bearing is a very important reference factor. In addition, the strength and rigidity of the shaft and bearing box are also factors that need to be considered.
Design life of used machinery of 627 bearing
| Conditions of Use | Design life of service machinery L10h x10h (hours) | ||
| ~4 | 4~12 | 12~30 | |
| Using machinery for short periods of time or intermittently | Power tools, household appliances | Agricultural machinery, office equipment | |
| Use machinery for short periods of time or intermittently, but require reliable machinery | Medical instruments Measuring instruments | Household Air Conditioning Motor,Construction Equipment,Elevator,Crane | Crane (pulley) |
| Machinery that sometimes needs to operate for a long time | car, motorcycle | Small motors, large cars, trucks, general gears, equipment machinery, woodworking machinery | Machine tool spindle, industrial general motor, crusher, vibrating screen |
| Machinery that operates for more than 8 hours a day | Copper rolling mill roll neck, escalator, wheel conveyor, centrifugal separator | Passenger cars, trucks, (wheels), air conditioning equipment, large motors, air compressors | |
| Machinery that operates 24 hours a day and does not allow accidental shutdowns | |||
| Conditions of Use | Design life of service machinery L10h x10h (hours) | ||
| 30~60 | 60~ | ||
| Using machinery for short periods of time or intermittently | |||
| Use machinery for short periods of time or intermittently, but require reliable machinery | |||
| Machinery that sometimes needs to operate for a long time | Important gear devices, calendaring machines for rubber and plastics, rotary printing machines | ||
| Machinery that operates for more than 8 hours a day | Locomotive (axle), traction motor, mining hoist, blank holder flywheel | Valves, paper making machinery, ship propulsion devices | |
| Machinery that operates 24 hours a day and does not allow accidental shutdowns | Water pumps, mine drainage, water changing devices, power station equipment | ||
Application of 627 bearing:
NSAR are widely used in household appliance. micro-motors electrical tools garden machinery, motorcycles,automobiles,medical equipment, sports machinery, textile machinery and agricultural machinery.
Advantages of 627 bearings:
The bearings we manufacture are all low noise,low vibration,low friction, high precision, high sealed,high turning speed and long life.
Quality assurance certificate of 627 deep groove ball bearings:
Quality is the key point for the NSAR. bearing’s growth and development, which always regards the improvement of high quality and service as the long-term-development strategy. NSAR has passed IS09001: 2000, 1S09001: 2008, and will struggle for the NSAR in long term.
