NSKAngular Contact Ball Bearing – 40 mm ID, 80 mm OD, 18 mm Width, Open, 30° Contact Angle, P5.

Product Description

What this part is: NSK 7208ATYP5 single-row angular contact ball bearing. Bore: 40 mm. Outside diameter: 80 mm. Width: 18 mm. Series: 7200 (ISO 72xx medium series). Contact Angle: 30°. Open on both faces. Precision Class: P5, equivalent to ABEC 5. Decoding the designation: A: 30° contact angle in NSK’s designation system. TY: ball-guided cage. P5: ABEC 5 tolerance class. Contact Angle: 30°. Cage Type: Ball-guided. Country of origin on this item: Japan. Published ratings: Dynamic Load Rating: 36.5 kN. Static Load Rating: 26 kN. Limiting Speed: 15,000 rpm. Operating temperature range: −30 °C to 120 °C. Item weight: 0.80 lb. What these specs mean in practice: A 30° contact angle sits between the 25° and 40° executions: it carries substantially more thrust than a 15° or 25° bearing on the same envelope, and gives up top speed in exchange. That makes it the usual choice where a single direction of axial load dominates and the shaft still needs to turn quickly. P5 tolerance tightens bore, outside diameter and raceway runout over a standard-class bearing, so shaft location is more repeatable and running vibration is lower. A ball-guided cage is positioned by the ball complement itself rather than by a ring land, which keeps friction low. Quantity and configuration: One bearing. Unit Quantity: 1 Pc. A single angular contact bearing takes thrust in one direction, so a shaft carrying load both ways runs two of them opposed. Interchange guidance: Koyo / JTEKT 7208, which carries no angle letter and is a 30° bearing in that scheme, is the same-angle equivalent on this 40 x 80 x 18 mm envelope. Related sizes on the same envelope at other contact angles: SKF 7208 ACD/P5 and NSK 7208A5 at 25°, FAG 7208-B-TVP-P5 and NSK 7208B at 40°, and NSK 7208C or SKF 7208 CD at 15°. The ISO base number is 7208.