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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:
2 in stock
Super-precision angular contact ball bearing pair, 45 x 85 x 19 mm, 15° contact angle, light preload, ball-guided cage. 51.5 kN dynamic, 17,700 rpm.
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$223.96
2 in stock
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| MFR / Brand | NSK |
|---|---|
| MPN | 7209CTYDULPA7 |
| Model | 7209C TY DUL PA7 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 45 mm |
| OD | 85 mm |
| Width | 19 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7200 |
| Lubricant | Grease or oil |
| Preload | L light, 254 N |
| Base Number | 7209 |
| Industry Terms | Super precision angular contact ball bearing; spindle bearing; duplex universal set; light preload bearing pair; machine tool spindle bearing |
| Common Misspellings | 7209CTY DUL PA7; 7209 CTYDULPA7; 7209CYTDULPA7; NSK7209CTYDULPA7; 7209CTDULPA7 |
| Total Width | 38 mm |
| Overall Width | 19 mm |
| Bore Shaft Size | 45 mm |
| Mpn Variants | 7209CTYDULPA7; 7209-CTY-DUL-PA7; 7209C TY DUL PA7; 7209CTYDUL; 7209CTYNDUL; 7209C |
| Arrangement Configuration | Duplex universally ground set, 2 pieces |
| Cage Type | Ball-guided |
| Dynamic Load Rating | 51,500 N |
| Static Load Rating | 28,800 N |
| Rolling Elements | Ball |
| Item Weight | 0.41 kg (0.90 lb) |
| Limiting Speed | 17,700 rpm grease; 27,000 rpm oil |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Mounting Arrangement | Universally matchable back-to-back, face-to-face or tandem |
| Design Units | Metric |
| Bearing Material | Chrome steel |
| Part Number | 7209CTYDULPA7 |
| Cross Reference 1 | NSK 7209CTYDUL – no PA7 grade marking |
|---|---|
| Cross Reference 2 | NTN 7209CG/GNP4 – universal ground, light preload |
| Cross Reference 3 | FAG B7209-C-T-P4S – single, not a matched pair |
| Cross Reference 4 | SKF 7209 CD/P4A – single, not a matched pair |
| Cross Reference 5 | Timken 2MM209WI – phenolic land-riding cage, single |
| Cross Reference 6 | Koyo 7209C – standard precision, single |
NSK 7209CTYDUL super-precision angular contact ball bearing duplex set, 45 x 85 x 19 mm per bearing. Bore Diameter: 45 mm. Outside Diameter: 85 mm. Overall Width: 19 mm. Total Width: 38 mm. Contact Angle: 15°. Dynamic Load Rating: 51,500 N per bearing. Static Load Rating: 28,800 N per bearing. Limiting Speed: 17,700 rpm grease; 27,000 rpm oil. Preload: L light, 254 N. Cage Type: Ball-guided. Rolling Elements: Ball. Number Of Rows: 1 per bearing. Bore Type: Straight. Closure Type: Open. Bearing Material: Chrome steel. Item Weight: 0.41 kg (0.90 lb) per bearing. Design Units: Metric. Series: 7200. Base Number: 7209. Part Number: 7209CTYDULPA7. Unit Quantity: 2 Pcs.
7209 — ISO 72 light series angular contact ball bearing, 45 mm bore.
C — 15° contact angle.
TY — ball-guided cage.
DU — duplex universally ground, so any two pieces close to the set preload in any arrangement.
L — light preload, 254 N in a back-to-back or face-to-face pair.
Dynamic Load Rating: 51,500 N. Static Load Rating: 28,800 N. Permissible Axial Load: 19,600 N. Calculation factor f0: 14.2. Those are per-bearing figures as NSK publishes them.
Contact Angle: 15°. The shallow angle keeps the ball load path close to radial, holding ball centrifugal and gyroscopic effects down, which is why the bearing reaches 17,700 rpm on grease and 27,000 rpm on oil-air. Limiting Speed: 17,700 rpm grease; 27,000 rpm oil.
Preload: L light, 254 N. In a back-to-back or face-to-face pair the light class gives 67 N/µm axial rigidity at a measured axial clearance of -16 µm. The heavier classes trade speed for stiffness: medium is 534 N and 94 N/µm, heavy is 1,067 N and 131 N/µm. Light is the class chosen where spindle speed and heat matter more than absolute stiffness. Internal Clearance is not applicable on a preloaded set.
Cage Type: Ball-guided. The cage is located by the rolling elements rather than by a ring land.
Shaft seat 45 mm. Housing bore 85 mm. Ring width 19 mm each, 38 mm across the pair. Effective load centre a: 18.2 mm. Shaft abutment da min: 52 mm. Housing abutment Da max: 78 mm. Housing abutment Db max: 80 mm. Chamfer r min: 1.1 mm. Second chamfer r1 min: 0.6 mm. Maximum shaft or housing fillet ra max: 1.0 mm. Second fillet rb max: 0.6 mm. Recommended grease quantity: 2.5 g per bearing.
Unit Quantity: 2 Pcs. Arrangement / Configuration: Duplex universally ground set of two. Mounting Arrangement: Universally matchable back-to-back, face-to-face or tandem.
Closest matches: NSK 7209CTYDUL, the same bearing without the PA7 grade marking, and NTN 7209CG/GNP4, universally ground with light preload. FAG B7209-C-T-P4S and SKF 7209 CD/P4A are the same 15° P4-class bearing sold singly rather than as a matched pair. Timken 2MM209WI uses a phenolic land-riding cage. Koyo 7209C is the standard-precision version. All sit on the ISO 7209 envelope at 15°, but load ratings differ between makers, so match the preload class and the precision grade as well as the angle when substituting into a running spindle. Searchable variants of the number: 7209CTYDULPA7, 7209-CTY-DUL-PA7, 7209C TY DUL PA7, 7209CTYDUL, 7209CTYNDUL, 7209C.
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.
Our team can locate, cross-reference, and source all parts.
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