619-750-MA bearing: complete specifications & equivalents
The 619-750-MA is a ISO 15 radial bearing sized 750 x 1000 x 112 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 750 mm |
| Outer diameter D | 1000 mm |
| Width B | 112 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 761 kN |
| Basic static load rating C0 | 1800 kN |
| Fatigue load limit Pu | 25.5 kN |
| Reference speed (thermal) | 1000 rpm |
| Limiting speed (mechanical) | 850 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 255000 g |
| Manufacturer designation | 619/750 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 & 61900-series range
| Bore d | 29.528 in |
|---|---|
| Outer diameter D | 39.37 in |
| Width B | 4.409 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 125 mm |
| Smallest bore in 61900-series | 3 mm |
| Largest outer diameter in 61900-series | 1120 mm |
| Width range across 61900-series | 3–118 mm |
| Bore position in 61900-series (smallest first) | 61 of 63 |
| Bore above smallest 61900-series size | 747 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 619-750-MA model number is decoded
In the large-bore 61900-series, the bore is written directly after the slash as 750 mm (large thin-section bores use the slash spelling instead of the two-digit code). The envelope is 750×1000×112 mm (29.528×39.37×4.409 in) with a 125.0 mm radial section height, C 761 kN, C0 1800 kN and Pu 25.5 kN. The open 619/750 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 850 r/min, catalogue mass 255000 g. A thin section saves space but leaves little margin for misalignment or shaft deflection.
Typical equipment & failure modes
Common applications
- marine deck machinery
- crusher auxiliary drives
- space-constrained gearboxes
- clutch and transmission assemblies
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- raceway smearing under marginal lubrication at start-up
- electrical pitting in VFD-driven motors without shaft grounding
Selection pitfalls — read before you substitute
- The fatigue load limit is 25.5 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- The fatigue load limit is 25.5 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- The MA suffix on 619-750-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 255000 g quoted mass includes the heavier cage.
- Open 619-750-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 619-750-MA; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Catalogue ratings for 619-750-MA (C 761 kN, C0 1800 kN) are SKF figures from PUB BU/P1 17000; geometry revisions can change ratings without changing the designation, so keep the catalogue edition with the specification.
Frequently asked questions
What are the dimensions of 619-750-MA?
The SKF 619/750 MA measures 750 mm bore × 1000 mm OD × 112 mm width (29.528 × 39.37 × 4.409 in), mass about 255000 g. It is open, with no shields or seals.
Why is there a slash in the designation 619/750 MA?
The slash writes a bore that falls outside the two-digit code table: 619/750 means 750 mm bore. The site slug 619-750-MA replaces the slash with a hyphen.
What is the difference between 619-750-MA and a same-bore 62-series bearing?
Section height differs: 619-750-MA has a 125 mm radial section and C 761 kN; always match d, D and B — same bore alone never makes two bearings interchangeable.
Which fits should I use for 619-750-MA?
With a rotating inner ring use roughly m6 on the shaft and H7 in the 1000 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.