FAGB7028CAP2DULAngular Contact Ball Bearing Pair – 140 mm ID, 210 mm OD, 33 mm Width, 15° Contact Angle, Light Preload, ABEC 9

Product Description

What this part is

FAG B7028-C-A-P2-DUL super-precision spindle bearings, a matched pair of two single-row angular contact ball bearings in ultra-precision class P2. Light preload. Bore Diameter: 140 mm. Outside Diameter: 210 mm. Width: 33 mm per bearing. Contact Angle: 15°. Preload: Light (866 N).

Decoding the designation

B70 — FAG spindle bearing, ISO dimension series 10 (70xx).

28 — bore code, 28 x 5 = 140 mm.

C — 15° contact angle, for high speed with moderate axial rigidity.

P2 — ISO tolerance class P2, equivalent to ABEC 9, the highest standard precision grade.

DU — matched pair, universally ground, for back-to-back, face-to-face or tandem mounting.

L — Light preload.

What these specs mean in practice

Dynamic Load Rating: 153,000 N per bearing. Static Load Rating: 114,000 N per bearing. Fatigue Load Limit: 9,100 N. Precision Class: ABEC 9 / P2. Item Weight: 3.288 kg (7.25 lb) per bearing. Lubricant: grease or oil.

Preload: Light, 866 N for the pair in back-to-back or face-to-face arrangement. The same size is also built with Medium (2,724 N) and Heavy (5,429 N) preload.

Mounting data

Shaft shoulder diameter: 152 mm. Housing shoulder diameter: 199 mm. Distance between pressure cone apexes: 39.9 mm.

Quantity and configuration

Unit Quantity: 2 Pcs. One matched universal pair. Closure Type: Open. Number Of Rows: 1 per bearing.

Interchange guidance

Same 140 x 210 x 33 mm envelope, 15° contact angle and P2 class: SKF 7028 CD/PA9A, NSK 7028C (P2), Fafnir 2MMX9128WI.