61828 bearing: complete specifications & equivalents
The 61828 is a ISO 15 radial bearing sized 140 x 175 x 18 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 140 mm |
| Outer diameter D | 175 mm |
| Width B | 18 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 | 39 kN |
| Basic static load rating C0 | 46.5 kN |
| Fatigue load limit Pu | 1.66 kN |
| Reference speed (thermal) | 7500 rpm |
| Limiting speed (mechanical) | 4500 rpm |
| Operating temperature | -40 to +150 °C |
| Mass | 820 g |
| Manufacturer designation | SKF 61828 |
| 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 | 5.512 in |
|---|---|
| Outer diameter D | 6.89 in |
| Width B | 0.709 in |
| ISO bore code | 28 |
| Radial section height (D−d)/2 | 17.5 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) | 36 of 74 |
| Bore above smallest 61800-series size | 139 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61828-2RS-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (OPEN vs 2RS) — confirm sealing suits the duty. |
| 61828-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. |
| 61828-RSR-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (OPEN vs RSR) — confirm sealing suits the duty. |
| 61828-ZZ | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (OPEN vs ZZ) — confirm sealing suits the duty. |
| 61828-2RS-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (OPEN vs 2RS) — confirm sealing suits the duty. |
| 61828-NTN | NTN | 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. |
| 61828-ZZ-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (OPEN vs ZZ) — confirm sealing suits the duty. |
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 61828 model number is decoded
In the 61800-series (diameter series 8 of ISO 15) the last two digits encode the bore: 61828 carries bore code 28 = 140 mm. Outside diameter 175 mm and width 18 mm come from the ISO 15 boundary-dimensions general plan. With no seal suffix the bearing is open: no shields or seals are fitted and lubrication is supplied by the application. For normal-load mounting with a rotating inner ring on a 140 mm shaft, typical catalogue practice is a m6 shaft seat with an H7 housing bore — verify against the actual load direction and magnitude. 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
- rolling-contact fatigue spalling after the rated L10 life is exceeded
- brinelling from static overload or hammering during mounting
Selection pitfalls — read before you substitute
- At 140 mm bore the ring mass is significant: heat 61828 on an induction heater (max 120 °C), never over an open flame, and plan puller access or a withdrawal sleeve now for the day it has to come off again.
- Only 17.5 mm of radial section separates bore and OD on the 618xx series at 140 mm: ring flex from clamping or an oval housing bore transfers straight into raceway stress, so seat roundness matters more here than on a 6228.
- The open 61828 has no lubricant retention: grease escapes and contaminants migrate straight into the 140×175×18 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 61828 units.
- Suffixes stack in a defined order — clearance follows the seal code, e.g. 61828-C3. No clearance suffix means normal CN clearance.
- The housing bore for the 175 mm OD should be round within IT7; an oval bore pinches the outer ring of 61828 and shows up later as two-point loaded raceway wear.
- The open 61828 needs external sealing and application-supplied lubrication; in the SKF catalogue the protected variants are separate order numbers 61828-2Z (shields) and 61828-2RSH (contact seals), not suffix-free 61828.
- The 39/46.5 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 61828 bearing?
A 61828 deep-groove ball bearing has a 140 mm bore, 175 mm outer diameter and 18 mm width (5.512 × 6.89 × 0.709 in), per ISO 15 boundary dimensions. It is an open bearing with no seals or shields.
What internal clearance does 61828 have?
Unless a clearance suffix says otherwise, 61828 is manufactured to normal (CN) radial internal clearance. Tight fits and hot shafts consume clearance in service — for those conditions order the C3 execution of 61828 and verify the residual clearance after mounting.
How should 61828 be mounted?
Apply the mounting force to the ring being fitted: on a 140 mm shaft seat the press load must pass through the inner-ring face only. Induction heating of the inner ring (max 120 °C) is the clean method at this size. Never strike the outer ring, the cage or the seals.
What lubrication does 61828 need?
The open 61828 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.
What is the SKF designation and catalogue data for 61828?
In the SKF Rolling Bearings catalogue this size is listed as 61828 — the open (unsealed) execution, 140×175×18 mm per ISO 15. Quoted values: C 39 kN, C0 46.5 kN, Pu 1.66 kN, limiting speed 4500 r/min, mass 820 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 61828.
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.