FAG7308BTVPP5UOAngular Contact Ball Bearing – 40 mm Bore, 90 mm OD, 23 mm Width, 40° Contact Angle, P5 Precision, Universal Design, Clearance-Free Pairing

Product Description

What this part is

A pair of FAG 7308-B-TVP-P5-UO single-row angular contact ball bearings, each 40 mm bore by 90 mm outside diameter by 23 mm wide, open on both faces, with a 40° contact angle, P5 running accuracy and a solid glass-fibre reinforced polyamide window cage. Both pieces are ground to the universal design, so they mount against each other directly.

Decoding the designation

73 is the medium dimension series and 08 gives the 40 mm bore. B marks the modified internal construction carrying the 40° contact angle. TVP is the one-piece glass-fibre reinforced polyamide cage. P5 is ISO tolerance class 5, equivalent to ABEC 5. UO is the universal design that runs clearance-free once a pair is clamped.

What these specs mean in practice

A 40° contact angle is the highest-thrust option in the 7300 family, so a paired set locates the shaft rigidly in both axial directions. Each bearing carries a dynamic load rating of 50 kN and a static rating of 32.5 kN, with a fatigue limit load of 2.34 kN. Limiting and reference speed are both 8,500 rpm. P5 tightens radial and axial runout well beyond normal class, which is what holds shaft position under load.

Universal design and clearance-free pairing

Universal-design rings share a common deviation on bore and outside diameter, so any two can be set back-to-back, face-to-face or in tandem with no ground spacer and no shimming. The UO code gives that pair zero axial clearance and zero preload — the setting used where rigidity matters but the heat generation of a preloaded set does not suit the duty.

Quantity and configuration

Two bearings, one universally matched pair. Each piece is a complete single bearing and can also run alone.

Fitting notes

Mounting force is applied only to the ring being fitted, never through the ball complement. In an O or X arrangement the two outer rings clamp against each other in the housing bore, and both housing shoulders sit square to the axis. The polyamide cage suits continuous operation to 120 °C.

Condition

New, open box, with grease staining from storage.

Interchange guidance

SKF 7308 BE/P5 and NTN 7308BG/GNP5 match the envelope, angle and precision class. Within the FAG range, 7308-B-TVP-P5-UA carries a small axial clearance across the pair and 7308-B-TVP-P5-UL carries light preload, so both are related sizes rather than equivalents where the setting is specified.