6088-M bearing: complete specifications & equivalents
The 6088-M is a ISO 15 radial bearing sized 440 x 650 x 94 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 440 mm |
| Outer diameter D | 650 mm |
| Width B | 94 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 553 kN |
| Basic static load rating C0 | 965 kN |
| Fatigue load limit Pu | 17.6 kN |
| Reference speed (thermal) | 1900 rpm |
| Limiting speed (mechanical) | 1500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 105000 g |
| Manufacturer designation | 6088 M |
| 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 & 6000-series range
| Bore d | 17.323 in |
|---|---|
| Outer diameter D | 25.591 in |
| Width B | 3.701 in |
| ISO bore code | 88 |
| Radial section height (D−d)/2 | 105 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) | 50 of 61 |
| Bore above smallest 6000-series size | 436 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 6088-M model number is decoded
In the 6000-series, the last two digits encode the bore: 6088 carries code 88 = 440 mm (code × 5). The envelope is 440×650×94 mm (17.323×25.591×3.701 in) with a 105.0 mm radial section height, C 553 kN, C0 965 kN and Pu 17.6 kN. The open 6088 M carries no shields or seals and relies on application lubrication and external sealing. The M suffix identifies the machined brass cage execution, a separate order number from the pressed-steel version. Limiting speed 1500 r/min, catalogue mass 105000 g.
Typical equipment & failure modes
Common applications
- hoists and winches
- industrial fans and blowers
- mill and kiln auxiliaries
- pulp and paper machinery
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- fretting corrosion on a creeping shaft or housing seat
- cage damage from running beyond the limiting speed
Selection pitfalls — read before you substitute
- At 440 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 fatigue load limit is 17.6 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- The M suffix on 6088-M 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 105000 g quoted mass includes the heavier cage.
- Open 6088-M 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 6088-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- At 440 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 6088-M?
The SKF 6088 M measures 440 mm bore × 650 mm OD × 94 mm width (17.323 × 25.591 × 3.701 in), mass about 105000 g. It is open, with no shields or seals.
How does the bore code in 6088 work?
The final two digits of 6088 are bore code 88, multiplied by 5 to give 440 mm.
What is the difference between 6088-M and a same-bore 62-series bearing?
Section height differs: 6088-M has a 105 mm radial section and C 553 kN; always match d, D and B — same bore alone never makes two bearings interchangeable.
Which fits should I use for 6088-M?
With a rotating inner ring use roughly m6 on the shaft and H7 in the 650 mm housing; reverse the interference if the outer ring rotates.
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.