619-850-MA bearing: complete specifications & equivalents
The 619-850-MA is a ISO 15 radial bearing sized 850 x 1120 x 118 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 850 mm |
| Outer diameter D | 1120 mm |
| Width B | 118 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 852 kN |
| Basic static load rating C0 | 2120 kN |
| Fatigue load limit Pu | 28.5 kN |
| Reference speed (thermal) | 850 rpm |
| Limiting speed (mechanical) | 750 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 320000 g |
| Manufacturer designation | 619/850 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 | 33.465 in |
|---|---|
| Outer diameter D | 44.094 in |
| Width B | 4.646 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 135 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) | 63 of 63 |
| Bore above smallest 61900-series size | 847 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 619-850-MA model number is decoded
In the large-bore 61900-series, the bore is written directly after the slash as 850 mm (large thin-section bores use the slash spelling instead of the two-digit code). The envelope is 850×1120×118 mm (33.465×44.094×4.646 in) with a 135.0 mm radial section height, C 852 kN, C0 2120 kN and Pu 28.5 kN. The open 619/850 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 750 r/min, catalogue mass 320000 g. A thin section saves space but leaves little margin for misalignment or shaft deflection.
Typical equipment & failure modes
Common applications
- crusher auxiliary drives
- space-constrained gearboxes
- clutch and transmission assemblies
- robotics and automation joints
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- false brinelling from vibration while the shaft stands idle
- fretting corrosion on a creeping shaft or housing seat
Selection pitfalls — read before you substitute
- Mount by heating the inner ring (max 120 °C) — driving 619-850-MA home through the outer ring or balls brinells the raceways.
- Do not preload 619-850-MA to silence it: a deep-groove ball bearing is not angular-contact, and axial preload only raises temperature and shortens grease life.
- The MA suffix on 619-850-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 320000 g quoted mass includes the heavier cage.
- Open 619-850-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 619-850-MA; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Fillet radii must clear the 619-850-MA chamfer so the 118 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
Frequently asked questions
What are the dimensions of 619-850-MA?
The SKF 619/850 MA measures 850 mm bore × 1120 mm OD × 118 mm width (33.465 × 44.094 × 4.646 in), mass about 320000 g. It is open, with no shields or seals.
Why is there a slash in the designation 619/850 MA?
The slash writes a bore that falls outside the two-digit code table: 619/850 means 850 mm bore. The site slug 619-850-MA replaces the slash with a hyphen.
How heavy is 619-850-MA?
Catalogue mass is 320000 g for 619/850 MA; seal and cage executions of the same envelope differ by a few grams.
What load can 619-850-MA take?
Catalogue values for 619/850 MA: dynamic C 852 kN, static C0 2120 kN, fatigue limit Pu 28.5 kN. Use C in life calculation and C0 for static checks at 850 mm bore.
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.