NSK7209ATYP5Angular Contact Ball Bearing – Straight Bore, 45 mm ID, 85 mm OD, 19 mm Width, Open, 30° Contact Angle, P5 Precision

Product Description

What this part is: NSK 7209ATYP5 single-row angular contact ball bearing. Bore: 45 mm. Outside diameter: 85 mm. Width: 19 mm. Series: 7200, ISO 72 dimension series. Bore form: straight. Closure: open both faces. Decoding the designation: A: 30° contact angle. TY: ball-guided cage. P5: ISO precision class 5, equivalent to ABEC 5. Searchable forms include 7209ATYP5, 7209A TY P5, 7209-A-TY-P5 and 7209A. The carton also carries the Fafnir cross-reference 3M209WI CR. What these specs mean in practice: Basic dynamic load rating: 39.5 kN (8,880 lbf). Basic static load rating: 28.7 kN (6,452 lbf). Limiting speed: 8,500 rpm on oil. A 30° contact angle carries substantially more thrust than a 15° execution of the same envelope and sets the load line further from the bearing face, which stiffens an axially loaded shaft. P5 precision holds tighter bore, outside diameter and running-accuracy tolerances than a standard-class bearing, giving closer shaft location and lower running vibration. Quantity and configuration: Single bearing, single row, one piece. Angular contact ball bearings of this type take thrust in one direction, so they are conventionally mounted against a second bearing or a shoulder. Fitting notes: The wide face of the outer ring carries the thrust; orientation is set by the marked faces. Oil lubrication suits the published speed limit. Interchange guidance: Same-envelope related sizes: 7209A5 at 25° and 7209C at 15° are related sizes rather than interchanges, because the contact angle changes the thrust capacity and speed. FAG B7209 and Fafnir 3M209WI cover the same 45 x 85 x 19 mm envelope.