FAGB7003CBTP4SDULSuper-Precision Angular Contact Ball Bearing — 17 mm ID, 35 mm OD, 10 mm Width, 15° Contact Angle, P4S Class, Phenolic Cage, Light Preload

Product Description

What this part is

FAG B7003-C-T-P4S-DUL, a matched duplex set of super-precision angular contact spindle bearings. Bore: 17 mm. Outside Diameter: 35 mm. Width: 10 mm per bearing. Contact Angle: 15°. Precision Class: P4S, ISO 4 / ABEC 7 boundary dimensions with ISO 2 / ABEC 9 running accuracy. Cage Material: fabric-base laminate phenolic. Cage Type: machined, outer-ring land-riding. Rolling Elements: steel balls. Closure Type: open. Preload: universal light. Dynamic Load Rating: 8.65 kN. Static Load Rating: 4.9 kN. Unit Quantity: 2 Pcs.

Decoding the designation

B — FAG’s spindle bearing range, built with a larger ball complement and tighter running accuracy than a standard 70-series angular contact bearing.

7003 — the ISO 70 light dimension series at a 17 mm bore, giving the 17 x 35 x 10 mm envelope.

C — 15° contact angle.

T — fabric-base laminate phenolic cage, machined and guided on the outer ring land.

P4S — ISO 4 boundary dimension tolerance with ISO 2 running accuracy, the FAG spindle-bearing accuracy pairing.

DUL — two universally ground bearings supplied as a matched duplex set at light preload.

What these specs mean in practice

Contact Angle: 15°. A 15° angle puts most of the load path radially through the balls, which gives high radial stiffness and the highest speed capability in the spindle-bearing range; a 25° execution of the same size trades speed for axial capacity. Dynamic Load Rating: 8.65 kN, the load at which one bearing reaches one million revolutions of basic rating life. Static Load Rating: 4.9 kN. Cage Material: fabric-base laminate phenolic, which Schaeffler rates for continuous running to 100 °C and which holds oil in its own structure, so it survives momentary lubricant starvation better than a polyamide cage. Preload: universal light. Universal grinding means either face can be paired against another bearing of the same designation, and the light preload level is built into the ground faces, so the set reaches its designed rigidity when the rings are clamped solid with no shim measurement.

Mounting data

Bore: 17 mm. Outside Diameter: 35 mm. Width: 10 mm per bearing, 20 mm for the pair clamped face to face. Both rings are ground for interference on the shaft and location in the housing; the set is clamped by its ring faces, not by a spacer.

Quantity and configuration

Unit Quantity: 2 Pcs. Supplied as a matched duplex pair.

Interchange guidance

Manufacturer part number variants: B7003CB.T.P4S.DUL, B7003-C-T-P4S-DUL, B-7003-CB-T-P4S-DUL, B7003CBTP4SDUL, 7003C. Cross-Reference: Fafnir 2MM9103WI CR DUL, an identical 15° phenolic-cage duplex set on the same envelope. A 25° execution such as a B7003-E is a related size on the same 17 x 35 x 10 mm envelope and carries a different load and speed profile.