6052 bearing: complete specifications & equivalents
The 6052 is a ISO 15 radial bearing sized 260 x 400 x 65 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 260 mm |
| Outer diameter D | 400 mm |
| Width B | 65 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN / C3 available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 291 kN |
| Basic static load rating C0 | 375 kN |
| Fatigue load limit Pu | 8.8 kN |
| Reference speed (thermal) | 3200 rpm |
| Limiting speed (mechanical) | 2000 rpm |
| Operating temperature | -40 to +150 °C |
| Mass | 25000 g |
| Manufacturer designation | SKF 6052 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-24 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-24
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 & 6000-series range
| Bore d | 10.236 in |
|---|---|
| Outer diameter D | 15.748 in |
| Width B | 2.559 in |
| ISO bore code | 52 |
| Radial section height (D−d)/2 | 70 mm |
| Smallest bore in 6000-series | 4 mm |
| Largest outer diameter in 6000-series | 1150 mm |
| Width range across 6000-series | 4–155 mm |
| Bore position in 6000-series (smallest first) | 41 of 61 |
| Bore above smallest 6000-series size | 256 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6052 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; standard interchange — confirm clearance class and precision with the supplier. |
| 6052-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 260×400×65 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 6052-M | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 6052 M (machined brass cage, open arrangement) is the same-size execution on the 260×400×65 mm envelope 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 6052 model number is decoded
6052 is supplied open, without shields or seals, so the arrangement around it must supply and retain the lubricant. Within the extra-light 60xx section (diameter series 0 of ISO 15), multiplying bore code 52 by five gives the 260 mm bore; the 400 mm outside diameter and 65 mm width follow the same boundary-dimension plan. For a rotating inner ring on a 260 mm shaft under normal load, catalogue practice seats it on a m6 shaft fit with an H7 housing bore — confirm against the actual load direction and magnitude before committing. In the SKF catalogue this open execution carries the bare designation; protected variants are ordered separately as -2Z and -2RSH.
Typical equipment & failure modes
Common applications
- pulp and paper machinery
- medium and heavy industrial drives
- large gearboxes
- industrial fans and blowers
Known failure patterns
- contamination wear from dust and dirt ingress through the open arrangement
- lubricant starvation when no regreasing interval is maintained
- cage damage from operation beyond the limiting speed
- electrical pitting in VFD-driven motors without grounding protection
Selection pitfalls — read before you substitute
- At 260 mm bore the ring mass is significant: heat 6052 on an induction heater (max 120 °C), never over an open flame, and plan puller access or a withdrawal sleeve now for the day it has to come off again.
- Choosing the 60xx extra-light section saves radial space at 260 mm bore, but the trade-off is rating: if the drive sees shock or frequent start-stop cycles, re-check the L10 life against a 6252 before committing to the smaller envelope.
- The open 6052 has no lubricant retention: grease escapes and contaminants migrate straight into the 260×400×65 mm raceway, so specify a sealed arrangement for dusty or washdown duty.
- Storage matters for open bearings: 6052 leaves the factory with rust preventive only, so clean it and apply the service grease at assembly even if the rings look oily from the wrapper.
- Shaft and housing fillets must clear the bearing chamfer so the 65 mm-wide ring seats square; provide an undercut or withdrawal groove instead of relying on an oversized radius.
- Deep-groove ball bearings tolerate only minutes of misalignment; if the 400 mm housing cannot be aligned, switch to a self-aligning type rather than shimming 6052.
- The open 6052 needs external sealing and application-supplied lubrication; in the SKF catalogue the protected variants are separate order numbers 6052-2Z (shields) and 6052-2RSH (contact seals), not suffix-free 6052.
- The 291/375 kN ratings here are SKF Explorer-class figures from catalogue PUB BU/P1 17000/1 EN (Oct 2018); SKF can revise internal geometry and ratings without changing the designation, so treat the catalogue version and date as part of the specification and re-verify for critical drives.
Frequently asked questions
What are the dimensions of a 6052 bearing?
A 6052 deep-groove ball bearing has a 260 mm bore, 400 mm outer diameter and 65 mm width (10.236 × 15.748 × 2.559 in), per ISO 15 boundary dimensions. It is an open bearing with no seals or shields.
What does no suffix on 6052 mean?
A bare 6052 designation means open: no shields or seals, normal CN radial clearance and P0 normal tolerance unless further suffixes are ordered. The application must supply and retain the lubrication.
How does the 6000 compare with other series at the same 260 mm bore?
The second digit is the diameter series: 60 is the smallest standard section (400×65 mm, 70.0 mm radial section) at 260 mm bore — below 62/63/64 in load capacity, for light loads in compact spaces.
Are 6052 bearings from different brands interchangeable?
For boundary dimensions, yes: every brand's 6052 uses the same ISO 15 envelope (260×400×65 mm). Load ratings, limiting speeds, clearance, precision class and sealing design can differ, so verify those in the supplier catalogue when substituting.
What is the SKF designation and catalogue data for 6052?
In the SKF Rolling Bearings catalogue this size is listed as 6052 — the open (unsealed) execution, 260×400×65 mm per ISO 15. Quoted values: C 291 kN, C0 375 kN, Pu 8.8 kN, limiting speed 2000 r/min, mass 25000 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 6052.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-24. Read our editorial & correction policy.