SKF7017 ACD/P4ADGASuper-Precision Angular Contact Ball Bearing – Straight Bore, 85 mm ID, 130 mm OD, 22 mm Width, Open, 25° Contact Angle, Extra Light Preload, ABEC 7 / P4.

Product Description

What this part is:

SKF 7017 ACD/P4A DGA super-precision single row angular contact ball bearing. Bore: 85 mm. Outside diameter: 130 mm. Width: 22 mm. Series: 70, light section. Open on both faces, straight bore, chrome steel rings and balls.

Decoding the designation:

AC: 25° contact angle. D: window-type cage centred on the outer ring. P4A: SKF super-precision tolerance class, ABEC 7 dimensional accuracy with running accuracy held tighter still. DGA: universally matchable, extra light preload, 400 N axial preload.

What these specs mean in practice:

Basic dynamic load rating: 63.7 kN (14,320 lbf). Basic static load rating: 62.0 kN (13,940 lbf). Fatigue load limit: 2.5 kN. A 25° contact angle carries more thrust and less speed than a 15° angle of the same envelope. Attainable speed: 8,500 r/min on grease and 14,000 r/min on an oil-air feed. Ball complement: 21 balls at 14.288 mm diameter.

Preload and matching:

Preload GA, extra light: 400 N. Axial stiffness: 233 N/µm. Universally matchable construction lets bearings of this designation be combined directly into multi-bearing stacks with the preload arriving as built.

Quantity and configuration:

One universally matchable bearing. Mass: 0.881 kg (1.94 lbs).

Fitting notes:

Shaft abutment diameter: 91 mm minimum. Housing abutment diameter: 124 mm maximum, and 126 mm on the opposing face. Maximum shaft fillet radius: 1 mm. Maximum housing fillet radius: 0.6 mm. Reference grease quantity: 11.7 cm³. Preload is set at the factory and the bearing runs as supplied.

Cross-references:

25° super-precision bearings of this size: FAG B7017-E-T-P4S and NSK 7017A5TR, preload class not stated. SKF 7017 CD/P4A is the same 85 x 130 x 22 mm size at 15°. Searchable forms: 7017ACDP4ADGA, 7017-ACD/P4ADGA, 7017 ACD P4A DGA, 7017ACD/P4A/DGA.