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NSK precision angular contact bearing, 35 x 80 x 21 mm, 40° contact angle for heavy thrust, polyamide cage, back-to-back duplex pair.
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| MFR / Brand | NSK |
|---|---|
| MPN | 7307BTYDBP5 |
| Model | 7307 B TY DB P5 7307BEAY 7307 B TVP |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 35 mm |
| OD | 80 mm |
| Width | 21 mm |
| Source | NSK, Applied |
|---|---|
| Material | Bearing Steel |
| Series | 7300 |
| Condition | New – Open box |
| Base Number | 7307B |
| Industry Terms | 40 degree angular contact bearing; thrust bearing pair; back to back duplex; precision angular contact; pump shaft bearing |
| Common Misspellings | 7307 BTYDB P5; 7307BTYOBP5; 7307B TY DBP5; NSK 7307 BDB |
| Application Types | Pump and compressor shafts; worm gear drives; vertical shafts carrying rotor weight; thrust-dominated gearbox positions |
| Condition Note | New Old Stock |
| Bore Shaft Size | 35 mm |
| Mpn Variants | 7307BTYDBP5; 7307B-TY-DB-P5; 7307 B TY DB P5; 7307BTYNDBP5; 7307BDBP5; 7307B |
| Manufacturer Status | NSK, current range; NSK's current published variant of this designation is 7307BW |
| Arrangement Configuration | DB - duplex back-to-back. Load lines diverge outward, giving high moment and tilting resistance. Not interchangeable with a face-to-face pair. |
| Precision Class | P5 (ISO class 5 / ABEC 5) |
| Additional Attributes | Dynamic load rating is deliberately not published: NSK's reachable data covers the related 7307BW variant and could not be reconciled with figures circulating for the plain 7307B, and Cr drives life calculation directly. Limiting speed is not published by NSK for this designation. Chamfer r / r1 minimum 1.5 mm / 1.0 mm. Warning: 7307C, 7307A5 and 7307A share this exact envelope at 15, 25 and 30 degrees and are NOT substitutes. |
| Cage Type | Caged |
| Dynamic Load Rating | Not specified |
| Static Load Rating | 24,200 N (5,440 lbf) |
| Precision Rating | ABEC 5 / P5 |
| Rolling Elements | Ball |
| Max Temp | 120 °C |
| Item Weight | 1.01 lbs |
| Cage Material | Polyamide (NSK TYN-type, rated to approximately 120 C) |
| Limiting Speed | Not specified |
| Number Of Rows | Single row per bearing |
| Bore Type | Straight |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 40 degrees (NSK B) |
| Mounting Arrangement | Back-to-back (DB) |
| Design Units | Metric |
| Part Number | 7307BTYDBP5 |
| Cross Reference 1 | 7307BW (NSK current published variant - differs in internal detail from the plain 7307B) |
|---|---|
| Cross Reference 2 | 7307BECBM (SKF format - B = 40 degrees) |
| Cross Reference 3 | 7307BEP (SKF format polyamide cage - B = 40 degrees) |
| Cross Reference 4 | 7307B DB (FAG / NTN style) |
NSK 7307BTYDBP5 precision angular contact ball bearing, heavy 73-dimension series. 35 mm bore, 80 mm outside diameter, 21 mm width. Contact Angle: 40 degrees. Precision Class: P5 (ISO class 5, ABEC 5). Cage Material: Polyamide, ball-guided, moulded, rated to approximately 120°C. Arranged back-to-back (DB) as a pair.
7307 is the 73-dimension series angular contact envelope, 35 x 80 x 21 mm. B is NSK’s code for a 40 degree contact angle; C is 15 degrees, A5 is 25 degrees and A is 30 degrees in the same scheme. TY denotes the moulded polyamide, ball-guided cage. DB is a duplex pair mounted back-to-back, with the load lines diverging outward. P5 is ISO tolerance class 5, equivalent to ABEC 5.
A 40 degree contact angle carries substantially more axial load than a 15 or 25 degree bearing in the same envelope and resists axial deflection strongly, which is why 40 degree bearings serve pump and compressor shafts, worm gear drives and vertical shafts carrying rotor weight. A back-to-back arrangement gives the pair high resistance to moment loading and tilting, making it the standard choice for a short overhung shaft that must be held rigid. A face-to-face pair converges the load lines instead, tolerating misalignment better but resisting moments less, and the two arrangements are not interchangeable.
Static Load Rating: 24,200 N, single bearing. Chamfer r / r1 minimum: 1.5 mm / 1.0 mm.
DB designates a two-bearing back-to-back arrangement.
The same envelope and angle appear across makers as 7307B in NSK, NTN and FAG style, and as 7307BECBM or 7307BEP in SKF style. 7307C, 7307A5 and 7307A share the 35 x 80 x 21 envelope but carry 15, 25 and 30 degree contact angles and are not substitutes. NSK’s current published variant of this designation is 7307BW.
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