SNFAE290-7CE1DUFAngular Contact Ball Bearing — 90 mm ID, 160 mm OD, 30 mm Width, 15° Contact Angle, ABEC 7, Heavy Preload

Product Description

What this part is

SNFA E290-7CE1DUF is a matched set of two super-precision single-row angular contact ball bearings from the SNFA E 200 series, ISO dimension series 02. Bore Diameter: 90 mm. Outside Diameter: 160 mm. Width: 30 mm per bearing. Contact Angle: 15°. Precision Class: ABEC 7 / P4. The current SKF equivalent is the 7218 CD/P4A high-capacity D design.

Decoding the designation

E2 — SNFA E 200 series, ISO dimension series 02 (72xx envelope).

90 — bore diameter in millimetres.

7 — SNFA precision grade, ABEC 7 (ISO P4).

C — phenolic resin cage.

E — cage centred on the outer ring.

1 — 15° contact angle.

DU — universal duplex set: two bearings ground for back-to-back, face-to-face or tandem mounting.

F — heavy preload.

What these specs mean in practice

Dynamic Load Rating: 127,000 N per bearing. Static Load Rating: 112,000 N per bearing. Limiting Speed: 8,500 rpm grease; 14,000 rpm oil-air, single bearing. The 15° angle favours radial stiffness and speed; heavy preload gives a rigid, low-deflection spindle support.

Mounting data

Item Weight: 2.22 kg (4.89 lb) per bearing. Cage Type: Outer-ring guided. Cage Material: Phenolic. Closure Type: Open.

Quantity and configuration

Unit Quantity: 2 Pcs. Mounting Arrangement: Universal matched pair, back-to-back, face-to-face or tandem. Preload: Heavy.

Interchange guidance

SKF owns SNFA and lists the E 200 series as the SNFA equivalent of its 72 .. D range. Cross-references with the same 90 x 160 x 30 mm envelope and 15° contact angle: SKF 7218 CD/P4ADGC, SKF 7218 CDGC/P4A, FAG B7218-C-T-P4S-UH, NSK 7218CTRDUHP4, Fafnir 2MM218WICRDUH.