3316-A bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the 3316-A model number is decoded

3316 A is SKF's 80 mm-bore double-row angular-contact ball bearing of the 3300 series — two ball rows back-to-back for two-direction axial location in one unit, 80×170×68.3 mm. A on a double-row bearing means no filling slots, so both rows carry their full ball complement in both directions. with no cage suffix the double-row A execution uses the standard stamped steel ball-centred cage. Envelope 80×170×68.3 mm (3.15×6.693×2.689 in), 45.0 mm radial section height, C 193 kN, C0 156 kN, Pu 6 kN.reference speed 4,300 r/min (thermal) and limiting speed 3,800 r/min (mechanical), catalogue mass 6800 g. Sizing arithmetic on the 80 mm bore: 193 kN C divided by the 45.0 mm radial section height gives 4.3 kN per section millimetre; the 6800 g mass and 3 % Pu/C share frame the light-load floor for the adjusted-life check. Load balance: C0 156 kN against C 193 kN gives a 0.81 ratio, typical of a double-row bidirectional design; Pu 6 kN enters the SKF adjusted-life equation rather than the basic rating life. Bore-to-OD planning: OD 170 over bore 80 is a 2.13× step for this size, and the 68.3 mm width gives a bore/width ratio of 1.17; use these ratios when housing space around the 80 mm shaft is the first constraint.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• A capped 3316-2Z/-2RS1 execution of this envelope exists for sealed-for-life duty; an open double-row bearing needs application sealing and a defined lubricant supply.
• Interference goes on the rotating ring (about k5 at 80 mm bore); the wide 68.3 mm ring is sensitive to tilted seats, so check squareness before clamping.
• Interference goes on the rotating ring (about k5 at 80 mm bore); the wide 68.3 mm ring is sensitive to tilted seats, so check squareness before clamping.
• Compared with a single-row pair of the same bore, the double-row 3316 occupies less axial space but offers less freedom to adjust preload — do not substitute without re-checking the arrangement.
• Catalogue ratings are SKF PUB BU/P1 17000 figures for 3316 A as the double a steel execution; the other order numbers of the 3316 size are different products and may carry different ratings — always quote the full designation when purchasing.