NSK7008ATYP5Angular Contact Ball Bearing – Straight Bore, 40 mm ID, 68 mm OD, 15 mm Width, Open, 30° Contact Angle, P5 Precision

Product Description

What this part is

NSK 7008ATYP5 super-precision angular contact ball bearing. Bore: 40 mm. Outside diameter: 68 mm. Width: 15 mm. Series: 7000, ISO 70 dimension series. Bore form: straight. Closure: open.

Decoding the designation

A: 30° contact angle. TY: ball-guided cage. P5: ISO precision class 5, equivalent to ABEC 5. Searchable forms include 7008ATYP5, 7008-A-TY-P5, 7008A TY P5, 7008A and 7008E. The carton also carries the Fafnir cross-reference 3MM9108WI CR.

What these specs mean in practice

Basic dynamic load rating: 23.7 kN. Basic static load rating: 14.6 kN. Limiting speed: 13,900 rpm on grease, 18,600 rpm on oil-air. Permissible axial load: 9.15 kN. Effective load centre: 23.1 mm. A 30° contact angle is the high-thrust execution of this envelope: it carries substantially more axial load and gives higher axial stiffness than a 15° bearing, at a lower speed ceiling. P5 precision holds tighter bore, outside diameter and running-accuracy tolerances, giving closer shaft location and lower running vibration.

Quantity and configuration

Single bearing, single row, one piece. Thrust is taken in one direction, so the bearing is conventionally mounted against a second bearing or a shoulder.

Fitting notes

Shaft abutment diameter: 46 mm minimum. Housing abutment diameter: 62 mm maximum, 63 mm on the outer shoulder. Shaft fillet radius: 1 mm maximum; housing fillet radius: 0.5 mm maximum. Recommended grease charge: 1.1 g.

Interchange guidance

The 40 x 68 x 15 mm envelope is shared with SKF 7008 ACD/P5 at 25° and FAG B7008-C-T-P4S at 15°; both are related sizes rather than interchanges, because the contact angle changes thrust capacity and speed. 7008A5TYP5 at 25° and 7008CTYP5 at 15° are the NSK related sizes.