FAGB7016ETPAP4ULSuper Precision Angular Contact Ball Bearing 80 x 125 x 22 mm 25 Degree ABEC 7 Light Preload

Product Description

What this part is

A FAG B7016E.TPA.P4.UL super precision single-row angular contact ball bearing, 80 mm bore, 125 mm outside diameter, 22 mm width. The ring faces are universally ground, so two or more pieces pair directly into a back-to-back, face-to-face or tandem set without shimming.

Decoding the designation

B7016 — spindle-bearing series on the ISO 7016 envelope, 80 x 125 x 22 mm.
E — 25° contact angle in the FAG B-series scheme.
TPA — one-piece fibreglass-reinforced polyamide window cage, outer-ring land riding.
P4 — ISO tolerance class 4, equivalent to ABEC 7.
UL — universal grind, light preload when paired.

What these specs mean in practice

A 25° contact angle carries more axial load and less speed than the 15° C variant of the same envelope, which suits a spindle loaded mainly in thrust by cutting force rather than one chasing the highest rpm. Light preload keeps friction and heat generation down and favours speed; medium and heavy preloads raise axial stiffness at the cost of temperature rise.

Published specifications

Bore 80 mm · OD 125 mm · Width 22 mm
Contact angle 25°
Precision class P4 (ABEC 7)
Preload class UL, universal light
Cage: polyamide, outer-land riding
One row of balls, open on both faces

Quantity and configuration

1 Pc, supplied as a single universally ground bearing. Single-row angular contact bearings carry thrust in one direction only; axial location in both directions comes from pairing two pieces back to back or face to face.

Fitting notes

The polyamide cage sets a continuous operating ceiling around 120 °C, so induction heating and oil baths are held within that limit. The wide face of each ring carries the universal-grind mark; matching the marks in a pair sets the light preload as ground.

Interchange guidance

Same-spec 25° ABEC 7 equivalents on this envelope are the Fafnir/Timken 3MM9116WI, NSK 7016A5 and SKF 7016 ACD/P4A. The 15° forms — B7016C, 2MM9116WI, SKF 7016 CD/P4A — are related sizes with different thrust and speed behaviour rather than interchanges, as are the same numbers in other preload or precision classes.