3213-A bearing: complete specifications & equivalents
The 3213-A is a ISO 15 radial bearing sized 65 x 120 x 38.1 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 65 mm |
| Outer diameter D | 120 mm |
| Width B | 38.1 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 80.6 kN |
| Basic static load rating C0 | 73.5 kN |
| Fatigue load limit Pu | 3.1 kN |
| Reference speed (thermal) | 5600 rpm |
| Limiting speed (mechanical) | 4800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1750 g |
| Manufacturer designation | 3213 A |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-27 |
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.
Dimensions in inches & 3200-series range
| Bore d | 2.559 in |
|---|---|
| Outer diameter D | 4.724 in |
| Width B | 1.5 in |
| ISO bore code | 13 |
| Radial section height (D−d)/2 | 27.5 mm |
| Smallest bore in 3200-series | 10 mm |
| Largest outer diameter in 3200-series | 200 mm |
| Width range across 3200-series | 14–69.8 mm |
| Bore position in 3200-series (smallest first) | 14 of 22 |
| Bore above smallest 3200-series size | 55 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 3213-A-2Z | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 65×120×38.1 mm envelope with catalogue ratings within 10 %; 3213 A-2Z is the stamped steel cage, shields (-2Z) execution of this size — boundary dimensions interchangeable, execution differs. |
| 3213-A-2RS1 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 65×120×38.1 mm envelope with catalogue ratings within 10 %; 3213 A-2RS1 is the stamped steel cage, contact NBR seals (-2RS1) execution of this size — boundary dimensions interchangeable, execution differs. |
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 3213-A model number is decoded
3213 A is SKF's 65 mm-bore double-row angular-contact ball bearing of the 3200 series — two ball rows back-to-back for two-direction axial location in one unit, 65×120×38.1 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 65×120×38.1 mm (2.559×4.724×1.5 in), 27.5 mm radial section height, C 80.6 kN, C0 73.5 kN, Pu 3.1 kN.reference speed 5,600 r/min (thermal) and limiting speed 4,800 r/min (mechanical), catalogue mass 1750 g. Sizing arithmetic on the 65 mm bore: 80.6 kN C divided by the 27.5 mm radial section height gives 2.9 kN per section millimetre; the 1750 g mass and 4 % Pu/C share frame the light-load floor for the adjusted-life check. Load balance: C0 73.5 kN against C 80.6 kN gives a 0.91 ratio, typical of a double-row bidirectional design; Pu 3.1 kN enters the SKF adjusted-life equation rather than the basic rating life. Bore-to-OD planning: OD 120 over bore 65 is a 1.85× step for this size, and the 38.1 mm width gives a bore/width ratio of 1.71; use these ratios when housing space around the 65 mm shaft is the first constraint.
Typical equipment & failure modes
Common applications
- crane and winch gearboxes
- paper-machine dryer-section gearing
- cement and mineral processing drives
Known failure patterns
- snap-ring groove or two-piece-ring damage when the D execution is pressed home through the wrong ring
- two-direction thrust overload concentrating load on one row and spalling its raceway
- stamped steel cage noise and pocket wear in marginal-lubrication starts, where a brass-cage execution would survive
- fretting corrosion on a loose rotating shaft seat
- raceway staining from water in the lubricant during idle periods
Selection pitfalls — read before you substitute
- The double-row 3213 takes thrust in both directions by itself — that is the reason to choose it over two single-row bearings: one housing bore, one fit, built-in set geometry.
- Controlled axial clearance is the heart of the design: the A execution is produced to the standard double-row axial clearance; check residual clearance after mounting and at operating temperature.
- The D executions have a two-piece inner ring: mount both halves square to each other, never press on the outer ring, and keep the split faces clean during fitting.
- The double-row 3213 takes thrust in both directions by itself — that is the reason to choose it over two single-row bearings: one housing bore, one fit, built-in set geometry.
- Catalogue ratings are SKF PUB BU/P1 17000 figures for 3213 A as the double a steel execution; the other order numbers of the 3213 size are different products and may carry different ratings — always quote the full designation when purchasing.
Frequently asked questions
What are the dimensions and catalogue data of 3213-A?
3213 A measures 65 mm bore × 120 mm OD × 38.1 mm width (2.559 × 4.724 × 1.5 in), mass about 1750 g. SKF 17000 ratings: C 80.6 kN, C0 73.5 kN, Pu 3.1 kN, reference speed 5,600 r/min (thermal) and limiting speed 4,800 r/min (mechanical).
What does the A suffix mean?
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.
Does the 3213 double-row bearing need pairing?
No — both ball rows are built into one bearing, so bidirectional location does not require a second unit. Controlled axial clearance is part of the design rather than a field adjustment.
Which fits should I use?
With a rotating inner ring use roughly k5 on the 65 mm shaft and H7 in the 120 mm housing; check the wide ring seats square because the 38.1 mm width is sensitive to tilt.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-27. Read our editorial & correction policy.