FAGB7032E.TPA.P4.ULSpindle Angular Contact Ball Bearing – 160 mm ID, 240 mm OD, 38 mm Width, Open, 25° Contact Angle, Phenolic Cage, P4S

Product Description

What this part is

FAG B7032E.TPA.P4.UL single-row spindle angular contact ball bearing from the Schaeffler B70 super-precision range. Bore 160 mm, outside diameter 240 mm, width 38 mm. Straight bore, open both faces. Made in Germany.

Decoding the designation

Contact Angle: 25°, from the E code on the B70 range. Cage Type: machined, outer-ring guided. Cage Material: fabric-base laminate phenolic, from TPA. Grouping: UL, universally matchable to light preload. Precision Class: P4 / P4S, ABEC 7. Series: B70 spindle range. Base Number: 7032. Current Schaeffler catalogue form: B7032-E-T-P4S-UL.

Published ratings

Dynamic Load Rating Cr: 182 kN, 40,917 lbf. Static Load Rating C0r: 138 kN, 31,025 lbf. Fatigue limit Cur: 10.1 kN, 2,338 lbf. Limiting speed: 5,000 rpm on grease. Reference speed: 7,500 rpm on oil. Effective load centre a: 2.583 in. Axial rigidity caL: 385 N/µm. Mass: 4.94 kg. Operating temperature range: −30 to 100 °C.

What these specs mean in practice

A 25° contact angle carries substantially more thrust and gives more axial stiffness than a 15° bearing of the same envelope, at a lower speed ceiling. An outer-ring guided phenolic cage runs light and self-lubricating, which is what supports 7,500 rpm on a 160 mm bore. Universal light preload lets any number of these bearings stack in any orientation and arrive at the ground preload with no spacer grinding. P4S tolerances hold radial and axial runout tight, giving lower running vibration and closer tool location.

Quantity and configuration

One bearing, universally matchable to light preload. It runs on its own or stacks back-to-back, face-to-face or in tandem with any other bearing of the same designation.

Mounting data

Shaft abutment diameter da: 6.85 in, h12. Housing abutment diameter Da: 8.976 in, H12. Housing fillet radius ra: 0.083 in maximum, ra1: 0.039 in maximum. Chamfer r and r1: 0.083 in minimum. Etk: 7.272 to 7.614 in.

Interchange guidance

SKF 7032 ACDGA/P4A is the same size at the same 25° angle and the same light preload class. Fafnir 3MM9132WI is the Timken cross on this envelope at 25°. NSK 7032A5TYNSULP4 shares the size and angle with a polyamide cage, so it is a related size.