16052-MA bearing: complete specifications & equivalents
The 16052-MA is a ISO 15 radial bearing sized 260 x 400 x 44 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 | 44 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 238 kN |
| Basic static load rating C0 | 310 kN |
| Fatigue load limit Pu | 7.2 kN |
| Reference speed (thermal) | 3200 rpm |
| Limiting speed (mechanical) | 2800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 22500 g |
| Manufacturer designation | 16052 MA |
| 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 & 16000-series range
| Bore d | 10.236 in |
|---|---|
| Outer diameter D | 15.748 in |
| Width B | 1.732 in |
| ISO bore code | 52 |
| Radial section height (D−d)/2 | 70 mm |
| Smallest bore in 16000-series | 12 mm |
| Largest outer diameter in 16000-series | 560 mm |
| Width range across 16000-series | 7–57 mm |
| Bore position in 16000-series (smallest first) | 34 of 40 |
| Bore above smallest 16000-series size | 248 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 16052 | NTN | full Dimensions and internal design equivalent — standard interchange. | NTN counterpart NTN 16052 on the same 260×400×44 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
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 16052-MA model number is decoded
In the 16000-series, the last two digits encode the bore: 16052 carries code 52 = 260 mm (code × 5). The envelope is 260×400×44 mm (10.236×15.748×1.732 in) with a 70.0 mm radial section height, C 238 kN, C0 310 kN and Pu 7.2 kN. The open 16052 MA carries no shields or seals and relies on application lubrication and external sealing. The MA suffix identifies the machined brass cage execution, a separate order number from the pressed-steel version. Limiting speed 2800 r/min, catalogue mass 22500 g. A thin section saves space but leaves little margin for misalignment or shaft deflection.
Typical equipment & failure modes
Common applications
- industrial fans and blowers
- mill and kiln auxiliaries
- pulp and paper machinery
- marine deck machinery
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- cage damage from running beyond the limiting speed
- raceway smearing under marginal lubrication at start-up
Selection pitfalls — read before you substitute
- Assign interference to the rotating ring: on a conventional shaft-mounted 260 mm position the inner ring rotates, so use a k5/m6 shaft seat with an H7 housing — reverse the logic if the outer ring rotates.
- At 260 mm bore, C3 clearance is the safe choice when interference fits plus temperature rise consume the CN clearance; a hot tight bearing with no residual clearance fails fast.
- The MA suffix on 16052-MA denotes a machined brass cage: it is the choice for high speeds, marginal lubrication and shock/vibration duty, and it is temperature-tolerant where polymer cages are not — the 22500 g quoted mass includes the heavier cage.
- Open 16052-MA needs external sealing at the arrangement level; in dusty housings its life depends entirely on those external seals and the regreasing schedule.
- Plan a relubrication interval for 16052-MA; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- At 260 mm bore, C3 clearance is the safe choice when interference fits plus temperature rise consume the CN clearance; a hot tight bearing with no residual clearance fails fast.
Frequently asked questions
What are the dimensions of 16052-MA?
The SKF 16052 MA measures 260 mm bore × 400 mm OD × 44 mm width (10.236 × 15.748 × 1.732 in), mass about 22500 g. It is open, with no shields or seals.
How does the bore code in 16052 work?
The final two digits of 16052 are bore code 52, multiplied by 5 to give 260 mm.
What load can 16052-MA take?
Catalogue values for 16052 MA: dynamic C 238 kN, static C0 310 kN, fatigue limit Pu 7.2 kN. Use C in life calculation and C0 for static checks at 260 mm bore.
What is the speed rating of 16052-MA?
SKF lists a 3200 r/min thermal reference speed and a 2800 r/min mechanical limiting speed for 16052 MA; real limits also depend on lubrication and fits.
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.