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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Availability:
1 in stock
Super precision angular contact ball bearing pair, 50x80x16 mm, 18° contact angle, polyamide ball-guided cage, extra light preload, P4Y. Open.
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$374.05
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| MFR / Brand | NSK |
|---|---|
| MPN | 50BNR10STYNDUELP4Y |
| Model | 50 BNR 10S TYN DUELP4Y |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 50 mm |
| OD | 80 mm |
| Width | 16 mm |
| Material | Bearing Steel |
|---|---|
| Series | BNR10 |
| Lubricant | Grease or oil |
| Preload | Extra light |
| Base Number | 50BNR10S |
| Industry Terms | NSK ROBUST spindle bearing; ultra-high-speed angular contact bearing; machine tool spindle bearing |
| Common Misspellings | 50BRN10STYNDUELP4Y; 50BNR1OSTYNDUELP4Y; 50BNR10STYNDULEP4Y; 50 BNR10S TYN DUEL P4Y |
| Application Types | Machine tool spindles; high-speed milling and grinding spindles; precision rotating equipment |
| Overall Width | 16 mm |
| Mpn Variants | 50BNR10STYNDUELP4Y; 50BNR10STYNDUEL P4Y; 50 BNR 10S TYN DUELP4Y; 50BNR10S-TYN-DUEL-P4Y |
| Precision Class | ABEC 7 / P4Y |
| Closure Type | Open |
| Cage Type | Ball-guided |
| Rolling Elements | Ball |
| Cage Material | Polyamide |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 18° |
| Mounting Arrangement | Universal matching |
| Bearing Material | Bearing steel |
| Cross Reference 1 | NSK 7010 – different angle and series |
|---|
NSK 50BNR10S super precision angular contact ball bearings from the ROBUST ultra-high-speed spindle range, supplied as a universally matched pair. Bore Diameter: 50 mm. Outside Diameter: 80 mm. Overall Width: 16 mm per bearing. Contact Angle: 18°. Precision Class: ABEC 7 / P4Y. Rolling Elements: Ball. Number Of Rows: 1 per bearing. Bore Type: Straight. Closure Type: Open. Bearing Material: Bearing steel.
50 — bore diameter in millimetres.
BNR — NSK ROBUST ultra-high-speed angular contact ball bearing, 18° contact angle.
TYN — polyamide resin cage, ball guided.
DU — universal matching, so the bearings mount back-to-back, face-to-face or in tandem.
EL — extra light preload.
P4Y — special dimensional accuracy with ISO class 4 running accuracy.
Contact Angle: 18°. The shallow angle biases the bearing toward radial stiffness and speed rather than axial capacity, which is why the BNR range is specified for high-dmn machine tool spindles.
Cage Material: Polyamide. Cage Type: Ball-guided. A resin cage is lighter than brass or steel, so cage loads and heat generation stay low at speed.
Preload: Extra light. Lubricant: grease or oil.
Unit Quantity: 2 Pcs. Mounting Arrangement: universal matching.
The 18° contact angle is specific to the NSK BNR range, so bearings from other makers share only the size. The 50 x 80 x 16 mm size is shared with the ISO 7010 bearing, which has a different contact angle and series.
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