NSK7209CTYDULPA7Angular Contact Ball Bearing Duplex Set – 45 x 85 x 19 mm, 15° Contact Angle, Light Preload, Ball-Guided Cage, Open

Product Description

What this part is:

NSK 7209CTYDULPA7 super-precision angular contact ball bearing duplex set, 45 x 85 x 19 mm per bearing. Unit Quantity: 2 Pcs. Series: 7200. Base Number: 7209. Number of Rows: 1 per bearing. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Bearing Material: Chrome steel. Design Units: Metric.

Decoding the designation:

7209 — ISO 72 light series angular contact ball bearing, 45 mm bore.

C — 15° contact angle.

TY — ball-guided cage.

DU — duplex, universally ground; 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.

Specifications:

Bore Diameter: 45 mm. Outside Diameter: 85 mm. Overall Width: 19 mm per bearing. Total Width: 38 mm for the pair. Contact Angle: 15°. Dynamic Load Rating: 51,500 N per bearing. Static Load Rating: 28,800 N per bearing. Permissible Axial Load: 19,600 N. Calculation Factor f0: 14.2. Limiting Speed: 17,700 rpm grease; 27,000 rpm oil. Preload: L light, 254 N. Axial Rigidity at light preload: 67 N per micrometre at a measured axial clearance of -16 micrometres. Cage Type: Ball-guided. Item Weight: 0.41 kg (0.90 lb) per bearing. Recommended Grease Quantity: 2.5 g per bearing.

Dimensions and mounting:

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. Chamfer r1 min: 0.6 mm. Maximum Fillet ra max: 1.0 mm. Maximum Fillet rb max: 0.6 mm. Mounting Arrangement: universally matchable back-to-back, face-to-face or tandem.

Compatibility and replacement:

Cross-references on the ISO 7209 envelope at 15°: NSK 7209CTYDUL, the same bearing without the PA7 grade marking. NTN 7209CG/GNP4, universally ground with light preload. FAG B7209-C-T-P4S and SKF 7209 CD/P4A, single bearings. Timken 2MM209WI, phenolic land-riding cage, single. Koyo 7209C, standard precision, single. Also written 7209-CTY-DUL-PA7, 7209C TY DUL PA7, 7209CTYDUL, 7209CTYNDUL, 7209C.

Frequently asked questions:

What are the bore, outside diameter and width of the NSK 7209CTYDULPA7?

Bore 45 mm, outside diameter 85 mm, width 19 mm per bearing (38 mm across the pair).

What contact angle and preload does it have?

Contact angle 15° (C). Light preload (L), 254 N in a back-to-back or face-to-face pair.

What are the load ratings and speed limits?

Dynamic rating 51,500 N and static 28,800 N per bearing, as NSK publishes them. Limiting speed 17,700 rpm on grease and 27,000 rpm on oil.