NTN 7308B bearings
7308B, Angular contact ball bearing, pressed cage, contact angle 40°

- Measurement system
- Metric
- Bore diameter
- 40.000 mm
- Outside diameter
- 90.000 mm
- Width
- 23.000 mm
- Cr
- 49500 N
- C0r
- 30500 N
- Limiting speed
- 7400 r/min
- Net weight
- 0.640 kg
- Number of rows
- 1
- Contact angle deg
- 40
- Sealing
- Without
- Cage
- Steel sheet
- Bearing material
- Steel
- Rolling material
- Steel
- Tolerance class
- Normal (PN)
In stock
Technical specification for NTN 7308B
Part Number | 7308B | |
---|---|---|
Brand | NTN | |
Description | Angular contact ball bearing | |
Net weight | 0.640 kg | |
PRODUCT DEFINITION | ||
d | 40 mm | Internal diameter |
D | 90 mm | External diameter |
B | 23 mm | Width |
a | 39.000 mm | Charge load application point |
α | 40° | Contact angle |
rs | 1.5 mm | Min fillet radius |
r1s | 1.00 mm | Min fillet radius |
PRODUCT PERFORMANCE | ||
C | 49.5 kN | Dynamic load |
C0 | 30.5 kN | Static load |
Cu | 2.37 kN | Fatigue limit load |
N | 9 900 tr/min | Oil lubrication limit speed |
N | 7 400 tr/min | Grease lubrication limit speed |
ABUTMENT | ||
da min. | 48.5 mm | Min shoulder diameter IR |
db min. | 45.5 mm | Min shoulder diameter IR |
Da max. | 81.5 mm | Max shoulder diameter OR |
Db max. | 84.5 mm | Max shoulder diameter OR |
ra max. | 1.5 mm | Max shaft & housing fillet radius |
r1a max. | 1 mm | Max fillet radius |

7308B, Brand: NTN, Angular contact ball bearing, Internal diameter 40 mm; External diameter 90 mm; Width 23 mm; 0.640 kg.
NTN 7308B, 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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