FAGB71905ETPAP4ULAngular Contact Ball Bearing – 25 mm ID, 42 mm OD, 9 mm Width, Open, 25°, ABEC 7 / P4, Phenolic Cage

Product Description

What this part is

FAG B71905E.TPA.P4.UL is a super-precision spindle angular contact ball bearing. Bore Diameter: 25 mm. Outside Diameter: 42 mm. Overall Width: 9 mm. Contact Angle: 25°. Number Of Rows: 1. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Bearing Material: Chrome steel. Item Weight: 0.044 kg (0.10 lb).

Decoding the designation

B719 — Schaeffler’s spindle bearing series in the extra-light 719 section, the thinnest cross-section in the range and the one that runs fastest.

71905 — ISO size code. Bore 25 mm, outside diameter 42 mm, width 9 mm.

E — Contact angle 25°. On a B70 or B719 designation the E is an angle code, not the general FAG reinforced-design code.

TPA — Fabric-base laminate phenolic cage, machined.

P4 — Precision Class: ABEC 7 / P4.

UL — Universally matchable. Faces are ground so any two or more bearings pair in back-to-back, face-to-face or tandem arrangement and reach the published preload without shims.

What these specs mean in practice

Dynamic Load Rating: 7,600 N. Static Load Rating: 3,600 N. Limiting Speed: 32,000 rpm grease; 50,000 rpm oil. Fatigue load limit, radial: 380 N.

Precision Class: ABEC 7 / P4. Cage Material: Phenolic. Cage Type: Machined. Lubricant: grease or oil. Operating temperature range: -30 °C to +100 °C.

A 25° contact angle carries more thrust than a 15° execution of the same size and runs slower. On this extra-light section the 50,000 rpm oil figure is among the highest in the spindle range. Series: B719. Base Number: B71905.

Mounting data

Preload per matched pair: light 41 N, medium 191 N, heavy 432 N.

Mounting Arrangement: Universal — back-to-back (O), face-to-face (X) or tandem. Internal Clearance: N/A; the bearing is preload-adjusted rather than clearance-set.

Quantity and configuration

Unit Quantity: 1 Pc. Single bearing, universally ground, ready to be matched with further pieces of the same designation.

Interchange guidance

Same-envelope, same-angle, same-class equivalents: SKF 71905 ACD/P4A, NSK 71905A5, NTN 71905CDB at 25°, RHP 71905A5 and Koyo 71905CD. Cross-references here are deliberately few: the 25° super-precision 719 section is built by a short list of makers, and only same-angle executions substitute.

Searchable forms of the number: B71905E.TPA.P4.UL, B71905ETPAP4UL, B71905-E-T-P4S-UL, B71905E.T.P4S.UL, B 71905 E TPA P4 UL, 71905, 7905.