FAGB7018-C-A-P4/T7-DULAngular Contact Spindle Bearing Pair – 90 mm ID, 140 mm OD, 24 mm Width, 15° Contact Angle, ABEC 7 / P4, Light Preload

Product Description

What this part is:

FAG B7018-C-A-P4/T7-DUL is a matched pair of super-precision angular contact spindle bearings from the Schaeffler B70 series. Bore Diameter: 90 mm. Outside Diameter: 140 mm. Width: 24 mm per bearing. Contact Angle: 15°. Precision Class: ABEC 7 / P4. Preload: Light.

Decoding the designation:

B7018 — FAG spindle bearing, ISO 7018 envelope, 90 x 140 x 24 mm.

C — 15° contact angle, the higher-speed, higher-radial-stiffness execution.

P4 — ISO tolerance class P4, equivalent to ABEC 7.

DUL — two universally matched bearings with light preload, mountable back-to-back, face-to-face or in tandem.

What these specs mean in practice:

Dynamic Load Rating: 78,000 N per bearing. Static Load Rating: 51,000 N per bearing. Fatigue Load Limit: 5,000 N. Preload Force: Light, 437 N (Schaeffler FV L). Operating Temperature: -30 to 100 °C. The 15° angle favours spindle speed and radial rigidity over axial capacity.

Mounting data:

Shaft Shoulder Diameter: 100 mm. Housing Shoulder Diameter: 131 mm. Minimum Chamfer: 1.5 mm. Item Weight: 1.14 kg (2.51 lb) per bearing.

Quantity and configuration:

Unit Quantity: 2 Pcs. One universally ground matched pair.

Cross-references:

At 15°, P4 class and light preload as a duplex pair: Fafnir 2MM9118WI CR DUL and Barden 118HDL. NSK 7018CTYNSULP4 and the current Schaeffler B7018-C-T-P4S-UL are single universal bearings rather than a pair. SKF 7018 CD/P4A matches angle and class as a single bearing.