7210 bearing: complete specifications & equivalents
The 7210 is a ISO 15 radial bearing sized 50 x 90 x 20 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 50 mm |
| Outer diameter D | 90 mm |
| Width B | 20 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 37.7 kN |
| Basic static load rating C0 | 28.5 kN |
| Fatigue load limit Pu | 1.22 kN |
| Reference speed (thermal) | 9000 rpm |
| Limiting speed (mechanical) | 8500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 470 g |
| Manufacturer designation | SKF 7210 BEP |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 3.1 single-row ACBB |
| Last verified | 2026-09-26 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 3.1 single-row ACBB) · extracted 2026-09-26
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 3.1 single-row ACBB); 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 & 7200-series range
| Bore d | 1.969 in |
|---|---|
| Outer diameter D | 3.543 in |
| Width B | 0.787 in |
| ISO bore code | 10 |
| Radial section height (D−d)/2 | 20 mm |
| Smallest bore in 7200-series | 10 mm |
| Largest outer diameter in 7200-series | 540 mm |
| Width range across 7200-series | 9–85 mm |
| Bore position in 7200-series (smallest first) | 11 of 36 |
| Bore above smallest 7200-series size | 40 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 7210-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 50×90×20 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 6210 | SKF | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | Identical envelope but a different bearing type — confirm load and speed suitability before substitution. |
| 6210-2RS | SKF | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | Identical envelope but a different bearing type — confirm load and speed suitability before substitution. |
| 6210-ZZ | SKF | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | Identical envelope but a different bearing type — confirm load and speed suitability before substitution. |
| 7210-BE-2RZP | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 7210 BE-2RZP (glass-fibre PA66 cage, non-contact NBR seals (-2RZ)) is the same-envelope execution with ratings within 10 % — boundary dimensions interchangeable. |
| 7210-BEP | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 7210 BEP (glass-fibre PA66 cage, open arrangement) is the same-envelope execution with ratings within 10 % — boundary dimensions interchangeable. |
| 7210-BECBP | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 7210 BECBP (glass-fibre PA66 cage, open arrangement) is the same-envelope execution with ratings within 10 % — boundary dimensions interchangeable. |
| 7210-BECBPH | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 7210 BECBPH (PEEK cage, open arrangement) is the same-envelope execution with ratings within 10 % — boundary dimensions interchangeable. |
| 7210-BECBM | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 7210 BECBM (brass cage, open arrangement) is the same-envelope execution with ratings within 10 % — boundary dimensions interchangeable. |
| 7210-BECBY | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF 7210 BECBY shares the envelope but catalogue C/C0 differ — envelope match only after a load check. |
| 7210-ACCBM | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF 7210 ACCBM shares the envelope but catalogue C/C0 differ — envelope match only after a load check. |
| QJ-210-MA | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF QJ 210 MA shares the envelope but catalogue C/C0 differ — envelope match only after a load check. |
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 7210 model number is decoded
7210 is SKF's single-row angular-contact ball bearing in the light (7200) series of the 7xxx range: an asymmetric-raceway open bearing with a nominal 40° contact angle, listed as 7210 BEP in the SKF Rolling Bearings catalogue.On the SKF nameplate, 7210 follows the ISO numbering convention: 7 for the angular-contact type, 2 for the light section section, final digits 10 for the 50 mm bore. Here B marks the steep 40° contact angle (the highest-capacity single-row angle), E the modernised internal geometry and P the glass-fibre nylon cage; the same bare size in a 25° A-angle or brass M-cage execution carries a different suffix. The 1.22 kN Pu figure feeds the SKF adjusted-life equation at contaminated or partial-film conditions, and the 0.76 C0/C balance shows this execution is tuned to thrust-heavy combined loads rather than pure radial running. Fit selection follows the rotating ring — interference on a rotating inner ring — and two 7210 units are required to take reversing thrust; keep the induced axial load (0.5·Fr/Y for the 40° angle) inside the rated capacity when calculating the pair.
Typical equipment & failure modes
Common applications
- belt-driven fan and blower shafts
- printing cylinders and packaging machine shafts
- machine-tool spindles and spindle units
- servo drives and precision gearboxes
Known failure patterns
- contamination wear through the open arrangement when no external seal is provided
- raceway smearing under marginal lubrication at start-up before oil reaches the contact ellipse
- raceway spalling from axial overload beyond the single-direction thrust rating
- false brinelling on idle paired sets exposed to machine vibration
- PA66 cage embrittlement after sustained running above its 120 °C continuous-temperature ceiling
- raceway staining from water in the lubricant during idle periods
Selection pitfalls — read before you substitute
- On this 50 mm bore, interference and temperature rise consume clearance inside a preloaded pair; calculate the residual clearance after mounting and at operating temperature — an over-tight 7210 pair heats, loses preload control and smears the raceways.
- The 72xx light section at 50 mm bore is the general-purpose angular-contact envelope (90×20 mm); stepping up to a 7310 changes OD, width and heat generation — it is not a drop-in swap when the housing and speed are fixed.
- DB (back-to-back) pairs are stiffer against moments, DF (face-to-face) pairs tolerate misalignment and thermal growth better; choosing the arrangement from the 2D drawing rather than the actual shaft thermal expansion is a common 7210 mounting error.
- When the outer ring rotates, reverse the fit logic and provide outer-ring location; the steep 40° contact of 7210 pushes the rings apart under load, so a non-located outer ring walks its seat even when the shaft is fixed.
- The PA66 cage is rated for 120 °C continuous service; sustained hotter running (hot process gas, heat soak from a coupling) embrittles the cage — select the machined-brass BECBM execution for positions above that.
- The 37.7/28.5 kN ratings are SKF catalogue 17000 values for the 7210 BEP execution; SKF can revise internal geometry without changing the order number, so keep the catalogue version (PUB BU/P1 17000/1 EN, 2018) with the specification and re-verify for critical drives.
- SKF lists several executions of 7210 (BEP basic, BECBP universally matchable, BE-2RZP sealed, BECBM brass-cage, ACC-series at 25°); they are not interchangeable order numbers — quote the full 7210 BEP designation when purchasing and match the execution to the mounting arrangement.
- A plain 7210 BEP is a single open bearing, not a universally matchable one; to mount a defined DB/DF pair order the BECBP (CB) execution — pairing two unmatched basic units gives uncontrolled preload because the side faces are not ground for set mounting.
Frequently asked questions
What are the dimensions and catalogue data of SKF 7210?
The SKF 7210 BEP is a single-row angular-contact ball bearing with 50 mm bore, 90 mm outer diameter and 20 mm width (1.969 × 3.543 × 0.787 in) per ISO 15. From SKF catalogue 17000: basic dynamic load rating C 37.7 kN, C0 28.5 kN, fatigue load limit Pu 1.22 kN, reference speed 9,000 r/min, limiting speed 8,500 r/min, mass about 470 g. It is an open 40° contact-angle bearing with a PA66 cage. The two speed figures are independent limits and the operating point must clear both.
How does the 7210 bore code work?
The last two digits of 7210 are bore code 10, so 10 × 5 = 50 mm bore. The 90 mm OD and 20 mm width come from the ISO 15 diameter-series plan, shared with the 6210 deep-groove envelope.
What do the 72xx and BEP designations mean?
The leading 7 marks a single-row angular-contact bearing; the second digit 2 is the ISO diameter series (light section). In the SKF suffix, B denotes the 40° contact angle, E the enhanced internal design, P the glass-fibre PA66 cage. The plain BEP is the basic open single bearing; BECBP is the universally matchable version. A 25° variant (suffix A, e.g. ACC) runs faster but carries less thrust.
Can a single 7210 take axial load in both directions?
No — one single-row angular-contact bearing reacts thrust in one direction only, and under radial load its 40° contact angle induces an axial force. Use two bearings as a matched pair: DB (back-to-back) for a rigid, moment-resisting arrangement, DF (face-to-face) where thermal expansion must be tolerated, or DT (tandem) where one-direction thrust is shared. Universally matchable CB executions can be assembled into pairs directly; define the preload class against the load and speed of the position.
How does 7210 compare with a deep-groove 6210?
Both use the 50×90×20 mm ISO 15 envelope, but the angular-contact 7210 has an asymmetric raceway at a nominal 40° angle: higher combined axial-plus-radial capacity and controlled preload, at the cost of speed, one-direction thrust, mandatory pairing for reversing loads and a minimum axial load requirement. A 6210 cannot be dropped into a combined-load 7210 position and vice versa — verify load direction, Fa/Fr ratio and speed before substituting.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 3.1 single-row ACBB on 2026-09-26. Read our editorial & correction policy.