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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
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RHP 7308-TB-DUM-P5 super-precision angular contact ball bearing, 40 x 90 x 23 mm, ABEC 5, medium preload, machined phenolic cage. 2 Pcs from a matched set.
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| MFR / Brand | RHP |
|---|---|
| MPN | 7308-TB-DUM-P5 |
| Model | 7308 T/TB DUM P5 / 7308TDUMEP5 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 40 mm |
| OD | 90 mm |
| Width | 23 mm |
| Preload | Medium |
|---|---|
| Material | Bearing Steel |
| Industry Terms | Super precision angular contact bearing; machine tool spindle bearing; duplex matched pair |
| Application Types | Machine tool spindles; grinding spindles; high-speed gearboxes |
| Overall Width | 23 mm |
| Mpn Variants | 7308TDUMP5; 7308-TB-DUM-P5; 7308B; 7308-T-DUM-EP5 |
| Precision Class | ABEC 5 / P5 |
| Cage Type | One-piece machined, inner-ring centred |
| Precision Rating | ABEC 5 / P5 |
| Series | 7300 |
| Rolling Elements | Ball |
| Cage Material | Phenolic |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.68 |
| Mounting Arrangement | Duplex, universally ground |
| Bearing Material | Bearing Steel |
| Closure Type | Open |
| Cross Reference 1 | NSK 7308 range (related size, 40x90x23 mm) |
|---|---|
| Cross Reference 2 | FAG B7308 range (related size, 40x90x23 mm) |
| Cross Reference 3 | SKF 7308 range (related size, 40x90x23 mm) |
RHP 7308-TB-DUM-P5 super-precision angular contact ball bearing. Bore 40 mm, outside diameter 90 mm, width 23 mm. Two pieces from a factory matched set, ground for medium preload when mounted as a pair. New old stock. Unit Quantity: 2 Pcs.
7308 — ISO series 03 angular contact ball bearing, 40 mm bore, 90 mm outside diameter, 23 mm width.
TB — one-piece machined laminated phenolic cage, centred on the inner ring.
DU — duplex universal. The faces are ground so that any two bearings from the range mount back-to-back, face-to-face or in tandem.
M — medium preload.
P5 — ISO precision class 5, equivalent to ABEC 5.
Bore Diameter: 40 mm.
Outside Diameter: 90 mm.
Overall Width: 23 mm.
Precision Class: ABEC 5 / P5.
Preload: Medium.
Cage Material: Phenolic.
Cage Type: One-piece machined, inner-ring centred.
Rolling Elements: Ball.
Number Of Rows: 1.
Bore Type: Straight.
Closure Type: Open.
Bearing Material: Bearing steel.
Mounting Arrangement: Duplex, universally ground.
Snap Ring Included: No.
Series: 7300.
Unit Quantity: 2 Pcs.
Envelope 40 x 90 x 23 mm, ISO 7308 size.
Same 40 x 90 x 23 mm size in other makers’ precision ranges: NSK 7308 range, FAG B7308 range, SKF 7308 range. Each range is offered in more than one contact angle. Searchable forms: 7308TDUMP5, 7308B, 7308-T-DUM-EP5.
Two pieces from a factory matched set.
A one-piece machined laminated phenolic cage centred on the inner ring.
ISO P5, equivalent to ABEC 5.
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