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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
1 in stock
Super precision angular contact ball bearing pair, 17 x 40 x 12 mm each, 30 degree contact angle. Ball-guided cage, P5 accuracy, back-to-back C7 preload set.
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$110.89
1 in stock
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| MFR / Brand | NSK |
|---|---|
| MPN | 7203ATYDBC7P5 |
| Model | 7203 A TY DB C7 P5 / 3MM203 WI CR / 7203CD |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 17 mm |
| OD | 40 mm |
| Width | 12 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7200 |
| Preload | C7 (NSK duplex preload class) |
| Base Number | 7203 |
| Industry Terms | super precision angular contact ball bearing; matched duplex pair; back-to-back bearing set; machine tool spindle bearing; ball-guided cage bearing; 30 degree angular contact bearing |
| Common Misspellings | 7203ATYDB C7P5; 7203ATYBDC7P5; 7Z03ATYDBC7P5; 7203-A-TY-DB-C7-P5; 7203 ATYDBC7P5; 7203ATYDC7BP5 |
| Application Types | machine tool spindles; grinding spindles; small high-speed spindles; precision gearboxes; instrument drives |
| Overall Width | 12 mm |
| Mpn Variants | 7203ATYDBC7P5; 7203A TY DB C7 P5; 7203-A-TY-DB-C7-P5; 7203ATYDB; 7203ATY; 7203A |
| Precision Class | P5 |
| Additional Attributes | Effective load centre a: 14.2 mm; shaft abutment da min: 22 mm; housing abutment Da max: 35 mm; abutment fillet ra max: 0.6 mm; bearing chamfer r min: 0.6 mm; r1 min: 0.3 mm; standard preload classes EL 25 N, L 115 N, M 247 N, H 412 N |
| Cage Type | Ball-guided |
| Dynamic Load Rating | 12,800 N |
| Static Load Rating | 5,450 N |
| Rolling Elements | Ball |
| Item Weight | 0.065 kg (0.143 lb) per bearing |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Limiting Speed | 26,400 rpm grease; 35,100 rpm oil |
| Lubricant | Grease or oil |
| Harmonization Code | 8482.10.50.68 |
| Contact Angle | 30° |
| Mounting Arrangement | Back-to-back (DB) |
| Bearing Material | Bearing steel |
| Cross Reference 1 | Koyo 7203 |
|---|---|
| Cross Reference 2 | NTN 7203/GNP5 |
| Cross Reference 3 | RHP 7203ATP5 |
| Cross Reference 4 | MRC 7203 (related, 29 degree MRC execution) |
NSK 7203A TY DB C7 P5 super precision angular contact ball bearings, supplied as a back-to-back matched pair. Bore Diameter: 17 mm. Outside Diameter: 40 mm. Overall Width: 12 mm per bearing. Contact Angle: 30°. Precision Class: P5. Cage Type: Ball-guided. Closure Type: Open. Rolling Elements: Ball. Bore Type: Straight. Number Of Rows: 1 per bearing. Series: 7200. Base Number: 7203. Mounting Arrangement: Back-to-back. Preload: C7.
7203 — NSK’s number for the ISO 72-series size, 17 x 40 x 12 mm.
A — 30° contact angle.
TY — ball-guided cage.
DB — duplex back-to-back. Two single-row bearings ground as a matched set and mounted with their outer ring back faces together.
C7 — NSK preload class for the duplex set. The set is preload-ground, so it runs without internal clearance.
P5 — NSK super precision accuracy grade. This series is offered in P5, P4, P4Y and P3.
Dynamic Load Rating: 12,800 N per bearing. Static Load Rating: 5,450 N per bearing. Ratings and mass are per bearing, not per set.
Limiting Speed: 26,400 rpm grease; 35,100 rpm oil. Lubricant: grease or oil.
Item Weight: 0.065 kg (0.143 lb) per bearing.
A 30° contact angle carries more axial load than the 15° and 25° executions of the same size, at a lower speed ceiling. A back-to-back arrangement sets the two load lines diverging outward, which gives the pair a wide effective support span and high resistance to tilting moments.
Shaft abutment diameter da min: 22 mm. Housing abutment diameter Da max: 35 mm. Abutment fillet radius ra max: 0.6 mm.
Bearing chamfer r min: 0.6 mm. Bearing chamfer r1 min: 0.3 mm. Effective load centre a: 14.2 mm.
Standard preload classes on this size are EL at 25 N, L at 115 N, M at 247 N and H at 412 N.
Unit Quantity: 2 Pcs. A matched back-to-back duplex pair.
Equivalent 17 x 40 x 12 mm 30° angular contact bearings: Koyo 7203, NTN 7203/GNP5, RHP 7203ATP5. MRC 7203 is the closest MRC execution at its own 29° angle.
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A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Our team can locate, cross-reference, and source all parts.
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