SKFSuper-Precision Angular Contact Bearing – 80 mm ID, 125 mm OD, 22 mm Width, Open, 15° Contact Angle, Medium Preload

Product Description

What this part is

SKF 7016-CD/P4ADGB super-precision angular contact ball bearing. Bore: 80 mm. Outside diameter: 125 mm. Width: 22 mm. Series: 70, single row. Contact angle: 15°. Precision Class: P4A. Design: high-capacity D. Open on both faces, one-piece inner and outer rings, machined cage. Country of origin as recorded on this listing: Italy.

Decoding the designation

7016 = 70 series, 80 mm bore. CD = 15° contact angle in SKF’s D design. P4A = SKF super-precision tolerance class with measuring load class A. DGB = universal matching at preload class B, medium. Searchable forms: 7016-CD/P4ADGB, 7016CD/P4ADGB, 7016 CD P4A DGB, 7016CDP4ADGB, 7016 CDGB/P4A.

What these specs mean in practice

A 15° contact angle gives high speed capability and high radial stiffness, which is why it is the standard machine-tool spindle angle. The high-capacity D design packs 20 balls of 14.288 mm into the envelope, giving a basic dynamic rating of 65 kN. Universal matching means the faces are ground so any bearings from the range mount together back-to-back, face-to-face or in tandem without shims. Preload class B sets a medium preload, raising spindle stiffness over the class A build.

Load ratings and running accuracy

Basic dynamic load rating C: 65 kN (14,610 lbf). Basic static load rating C0: 61 kN (13,710 lbf). Fatigue load limit Pu: 2.55 kN. Radial and axial runout: 0.002 mm. Mass: 0.842 kg (1.86 lb) per bearing. Reference grease quantity: 11.1 cm³ per bearing.

Quantity and configuration

Supplied as a matched set. The bearings are universally ground, so the set mounts back-to-back, face-to-face or in tandem at the factory-set medium preload.

Mounting data

Shaft abutment diameter da: 86 mm minimum. Housing abutment diameters Da 119 mm and Db 121 mm maximum. Fillet radii ra 1 mm and rb 0.6 mm maximum. Chamfer dimensions r1 1.1 mm and r2 0.6 mm minimum. Distance from side face to pressure point a: 24.8 mm. Oil nozzle position dn: 96.9 mm. Inner ring shoulder diameter 93.9 mm, outer ring shoulder diameter 111.1 mm. As a preloaded matched set the bearings carry no running clearance, so the internal clearance field reads N/A.

Interchange guidance

Direct equivalents at the same 15° angle, P4 class and medium preload: NSK 7016CTRDUMP4, RHP 7016CTRDUMP4, Fafnir 2MM9116WI-DUM, FAG B7016C.T.P4S.DUM. Related size: 7016 ACD/P4ADGB shares the 80 x 125 x 22 mm envelope at a 25° contact angle, and 7016 CD/P4ADGA is the same bearing at light preload. Both are different parts rather than substitutions.