61834 bearing: complete specifications & equivalents
The 61834 is a ISO 15 radial bearing sized 170 x 215 x 22 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 170 mm |
| Outer diameter D | 215 mm |
| Width B | 22 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 | 61.8 kN |
| Basic static load rating C0 | 78 kN |
| Fatigue load limit Pu | 2.4 kN |
| Reference speed (thermal) | 6000 rpm |
| Limiting speed (mechanical) | 3600 rpm |
| Operating temperature | -40 to +150 °C |
| Mass | 1650 g |
| Manufacturer designation | SKF 61834 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-25 |
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 & 61800-series range
| Bore d | 6.693 in |
|---|---|
| Outer diameter D | 8.465 in |
| Width B | 0.866 in |
| ISO bore code | 34 |
| Radial section height (D−d)/2 | 22.5 mm |
| Smallest bore in 61800-series | 1 mm |
| Largest outer diameter in 61800-series | 1820 mm |
| Width range across 61800-series | 1–140 mm |
| Bore position in 61800-series (smallest first) | 39 of 74 |
| Bore above smallest 61800-series size | 169 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61834-FAG | FAG | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
| 61834 | 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. |
| 61834-2RS | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 170×215×22 mm envelope per ISO 15; seal variant differs (OPEN vs 2RS) — confirm sealing suits the duty. |
| 61834-NSK | NSK | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
| 61834-RSR | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 170×215×22 mm envelope per ISO 15; seal variant differs (OPEN vs RSR) — confirm sealing suits the duty. |
| 61834-ZZ | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 170×215×22 mm envelope per ISO 15; seal variant differs (OPEN vs ZZ) — confirm sealing suits the duty. |
| 61834-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 170×215×22 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 61834-ZZ-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 170×215×22 mm envelope per ISO 15; seal variant (OPEN vs ZZ) and load ratings differ — confirm sealing and rating before substituting. |
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 61834 model number is decoded
61834 is supplied open, without shields or seals, so the arrangement around it must supply and retain the lubricant. Within the extra-thin 618xx section (diameter series 8 of ISO 15), multiplying bore code 34 by five gives the 170 mm bore; the 215 mm outside diameter and 22 mm width follow the same boundary-dimension plan. For a rotating inner ring on a 170 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
- space-constrained gearboxes
- clutch and transmission assemblies
- robotics and automation joints
- lay shafts and idler shafts
Known failure patterns
- contamination wear from dust and dirt ingress through the open arrangement
- lubricant starvation when no regreasing interval is maintained
- raceway smearing under marginal lubrication at start-up
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- Large bores like the 170 mm of 61834 demand clean, burr-free seats; one raised burr under a ring this size cocks the bearing and concentrates load at the raceway edge, cutting life drastically.
- The 618xx thin section at 170 mm bore has only a 22.5 mm radial section height: it saves space but is highly sensitive to misalignment, shaft deflection and shock loads — verify shaft stiffness before choosing it over a 6234.
- The open 61834 has no lubricant retention: grease escapes and contaminants migrate straight into the 170×215×22 mm raceway, so specify a sealed arrangement for dusty or washdown duty.
- Open bearings tolerate the highest speeds in the 61800-series but need a defined regreasing interval; run-to-failure lubrication is the dominant cause of early failure in open 61834 units.
- Suffixes stack in a defined order — clearance follows the seal code, e.g. 61834-C3. No clearance suffix means normal CN clearance.
- Measure the shaft, do not trust the drawing: a 170 mm nominal journal worn by even 0.02 mm turns an interference seat into a creeping fit that frets the bore of 61834.
- The open 61834 needs external sealing and application-supplied lubrication; in the SKF catalogue the protected variants are separate order numbers 61834-2Z (shields) and 61834-2RSH (contact seals), not suffix-free 61834.
- The 61.8/78 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 61834 bearing?
A 61834 deep-groove ball bearing has a 170 mm bore, 215 mm outer diameter and 22 mm width (6.693 × 8.465 × 0.866 in), per ISO 15 boundary dimensions. It is an open bearing with no seals or shields.
What lubrication does 61834 need?
The open 61834 is lubricated by the application; a NLGI 2 lithium-soap grease filled to roughly 25–35% of the free volume is the common choice, with a defined relubrication interval.
How does the 61834 bore code work?
The last two digits of 61834 are bore code 34, giving 34 × 5 = 170 mm bore. The 215 mm outside diameter and 22 mm width follow the ISO 15 diameter series, not the bore code alone.
What does no suffix on 61834 mean?
A bare 61834 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.
What is the SKF designation and catalogue data for 61834?
In the SKF Rolling Bearings catalogue this size is listed as 61834 — the open (unsealed) execution, 170×215×22 mm per ISO 15. Quoted values: C 61.8 kN, C0 78 kN, Pu 2.4 kN, limiting speed 3600 r/min, mass 1650 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 61834.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-25. Read our editorial & correction policy.