NTN 7228 bearings
7228, Angular contact ball bearing, machined brass cage, contact angle 30
- Measurement system
- Metric
- Bore diameter
- 140.000 mm
- Outside diameter
- 250.000 mm
- Width
- 42.000 mm
- Cr
- 225000 N
- C0r
- 215000 N
- Limiting speed
- 2700 r/min
- Net weight
- 8.780 kg
- Number of rows
- 1
- Contact angle deg
- 30
- Sealing
- Without
- Cage
- Machined brass
- Bearing material
- Steel
- Rolling material
- Steel
- Tolerance class
- Normal (PN)
In stock
Technical specification for NTN 7228
| Part Number | 7228 | |
|---|---|---|
| Brand | NTN | |
| Description | Angular contact ball bearing | |
| Net weight | 8.780 kg | |
| PRODUCT DEFINITION | ||
| d | 140 mm | Internal diameter |
| D | 250 mm | External diameter |
| B | 42 mm | Width |
| a | 77.500 mm | Charge load application point |
| α | 30° | Contact angle |
| rs | 3.0 mm | Min fillet radius |
| r1s | 1.10 mm | Min fillet radius |
| PRODUCT PERFORMANCE | ||
| C | 225 kN | Dynamic load |
| C0 | 215 kN | Static load |
| Cu | 11.7 kN | Fatigue limit load |
| N | 3 600 tr/min | Oil lubrication limit speed |
| N | 2 700 tr/min | Grease lubrication limit speed |
| ABUTMENT | ||
| da min. | 0 mm | Min shoulder diameter IR |
| db min. | 154 mm | Min shoulder diameter IR |
| Da max. | 236 mm | Max shoulder diameter OR |
| Db max. | 243 mm | Max shoulder diameter OR |
| ra max. | 2.5 mm | Max shaft & housing fillet radius |
| r1a max. | 1 mm | Max fillet radius |
7228, Brand: NTN, Angular contact ball bearing, Internal diameter 140 mm; External diameter 250 mm; Width 42 mm; 8.780 kg.
NTN 7228, single row angular contact ball bearing is designed to withstand combined loads with a predominant axial componen. Installed in opposition with another bearing of the same type, it guarantees high mounting rigidity.
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