7302 bearing: complete specifications & equivalents
The 7302 is a ISO 15 radial bearing sized 15 x 42 x 13 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 15 mm |
| Outer diameter D | 42 mm |
| Width B | 13 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 13 kN |
| Basic static load rating C0 | 6.7 kN |
| Fatigue load limit Pu | 0.28 kN |
| Reference speed (thermal) | 22000 rpm |
| Limiting speed (mechanical) | 20000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 80 g |
| Manufacturer designation | SKF 7302 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 & 7300-series range
| Bore d | 0.591 in |
|---|---|
| Outer diameter D | 1.654 in |
| Width B | 0.512 in |
| ISO bore code | 02 |
| Radial section height (D−d)/2 | 13.5 mm |
| Smallest bore in 7300-series | 10 mm |
| Largest outer diameter in 7300-series | 420 mm |
| Width range across 7300-series | 11–80 mm |
| Bore position in 7300-series (smallest first) | 3 of 32 |
| Bore above smallest 7300-series size | 5 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 7302-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×42×13 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 6302 | 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. |
| 6302-2RS | 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. |
| 6302-RSR | 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. |
| 6302-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. |
| 7302-BE-2RZP | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 7302 BE-2RZP (glass-fibre PA66 cage, non-contact NBR seals (-2RZ)) is the same-envelope execution with ratings within 10 % — boundary dimensions interchangeable. |
| 7302-BECBP | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 7302 BECBP (glass-fibre PA66 cage, open arrangement) is the same-envelope execution with ratings within 10 % — boundary dimensions interchangeable. |
| 7302-BEP | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 7302 BEP (glass-fibre PA66 cage, open arrangement) is the same-envelope execution with ratings within 10 % — boundary dimensions interchangeable. |
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 7302 model number is decoded
The SKF 7302 BEP is a 15×42×13 mm single-row angular-contact ball bearing — the medium (7300) series of the SKF 7xxx line, built on the ISO 15 envelope shared with the 6302 deep-groove size but cut for combined radial and one-direction axial load.Numbering ties the bearing to its envelope: 7302 means angular-contact type 7, medium section section 3, 15 mm bore (codes 00-03 use the 10/12/15/17 mm exception table) — which is why the 42×13 mm outline swaps dimensionally with a 6302, though the load behaviour does not. Suffix letters after 7302 describe the build: B fixes the 40° contact angle, E denotes the reinforced internal geometry, and P identifies the moulded PA66 glass-fibre cage rather than a stamped-steel or machined-brass one. Selection arithmetic: the C0/C ratio is about 0.52 (static 6.7 kN against dynamic 13 kN), typical of a 40° angle sized for axial capacity, and the 0.28 kN fatigue load limit Pu is the equivalent-load floor used in the SKF life calculation. Specify pairs rather than single units wherever thrust reverses: the 40° angle of 7302 generates an induced axial load under radial force, and an unpaired bearing on a reversing shaft will run slack in one direction and fret its seat.
Typical equipment & failure modes
Common applications
- small machine-tool spindles and high-speed heads
- servo and stepper motor shafts
- textile and wire-guide spindles
- small gear pumps and metering pumps
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
- preload loss as a matched pair runs loose, letting the balls skid and smear the raceways
- ball skidding when the induced axial load unloads the inactive bearing of a pair
- cage pocket damage when the bearing is started cold with grease of too-high base-oil viscosity
- mounting score marks when the bearing is cocked over the shaft keyway or a burr
Selection pitfalls — read before you substitute
- At a 15 mm bore the thin rings are easily distorted by an over-tight shaft nut; check seat runout (target Ra ≤ 0.8 µm) and torque the locknut progressively — a pinched 7302 shows up as spindle vibration long before it fails.
- The 73xx medium section at 15 mm bore (42×13 mm) is heavier-rated than the 7202 but runs hotter at the same speed; do not substitute a 7302 into a 72-series spindle position without re-checking dn, lubricant film and preload.
- At the 13 kN rating of 7302, preload class changes stiffness by tens of percent but also heat generation; select light preload for the 20,000 r/min speed end and heavier preload only where moment stiffness dominates.
- 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 7302 mounting error.
- 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 13/6.7 kN ratings are SKF catalogue 17000 values for the 7302 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 7302 (BEP basic, BECBP universally matchable, BE-2RZP sealed, BECBM brass-cage, ACC-series at 25°); they are not interchangeable order numbers — quote the full 7302 BEP designation when purchasing and match the execution to the mounting arrangement.
- A plain 7302 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 7302?
The SKF 7302 BEP is a single-row angular-contact ball bearing with 15 mm bore, 42 mm outer diameter and 13 mm width (0.591 × 1.654 × 0.512 in) per ISO 15. From SKF catalogue 17000: basic dynamic load rating C 13 kN, C0 6.7 kN, fatigue load limit Pu 0.28 kN, reference speed 22,000 r/min, limiting speed 20,000 r/min, mass about 80 g. It is an open 40° contact-angle bearing with a PA66 cage. Preload and lubricant film move the real thermal limit, so treat 22,000 r/min as catalogue conditions, not a guarantee in the housing.
How does the 7302 bore code work?
The last two digits of 7302 are bore code 02, giving a 15 mm bore under the exception table. The 42 mm OD and 13 mm width come from the ISO 15 diameter-series plan, shared with the 6302 deep-groove envelope. Codes 00–03 follow the 10/12/15/17 mm exception table.
What do the 73xx and BEP designations mean?
The leading 7 marks a single-row angular-contact bearing; the second digit 3 is the ISO diameter series (medium 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 7302 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. Preload light/medium choice changes stiffness and heat, so calculate it from the load diagram rather than torquing until the pair feels tight.
How does 7302 compare with a deep-groove 6302?
Both use the 15×42×13 mm ISO 15 envelope, but the angular-contact 7302 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. Envelope interchange is therefore dimensional only; the application must actually present axial load for the 7302 design to perform.
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.