6415 bearing: complete specifications & equivalents
The 6415 is a ISO 15 radial bearing sized 75 x 190 x 45 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 75 mm |
| Outer diameter D | 190 mm |
| Width B | 45 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 | 153 kN |
| Basic static load rating C0 | 114 kN |
| Fatigue load limit Pu | 4.15 kN |
| Reference speed (thermal) | 8000 rpm |
| Limiting speed (mechanical) | 5000 rpm |
| Operating temperature | -40 to +150 °C |
| Mass | 5800 g |
| Manufacturer designation | SKF 6415 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-24 |
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 & 6400-series range
| Bore d | 2.953 in |
|---|---|
| Outer diameter D | 7.48 in |
| Width B | 1.772 in |
| ISO bore code | 15 |
| Radial section height (D−d)/2 | 57.5 mm |
| Smallest bore in 6400-series | 10 mm |
| Largest outer diameter in 6400-series | 250 mm |
| Width range across 6400-series | 12–58 mm |
| Bore position in 6400-series (smallest first) | 16 of 21 |
| Bore above smallest 6400-series size | 65 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6415-ZZ | GENERIC-ISO | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×190×45 mm envelope per ISO 15; seal variant differs (OPEN vs ZZ) — confirm sealing suits the duty. |
| 6415-2RS | GENERIC-ISO | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×190×45 mm envelope per ISO 15; seal variant differs (OPEN vs 2RS) — 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 6415 model number is decoded
In the 6400-series (ISO 15 diameter series 4) the last two digits encode the bore: 6415 carries bore code 15 = 75 mm. Outside diameter 190 mm and width 45 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 75 mm shaft, typical catalogue practice is a k5 shaft seat with an H7 housing bore — verify against the actual load direction and magnitude.
Typical equipment & failure modes
Common applications
- conveyor drives
- material-handling equipment
- industrial fans
- industrial electric motors
Known failure patterns
- contamination wear from dust and dirt ingress through the open arrangement
- lubricant starvation when no regreasing interval is maintained
- false brinelling from vibration while the shaft is stationary
- fretting corrosion on a loose shaft seat
Selection pitfalls — read before you substitute
- Temperature rise and interference fits consume internal clearance on this 75 mm bore: a CN bearing on a tight, hot shaft can lose all residual clearance — size 6415 with C3 for those conditions.
- The 64xx heavy section at 75 mm bore (190 mm OD) is built for high-load, lower-speed duty; specifying it in a high-rpm motor gives excess heat and short grease life — use 62/63 there.
- The open 6415 has no lubricant retention: grease escapes and contaminants migrate straight into the 75×190×45 mm raceway, so specify a sealed arrangement for dusty or washdown duty.
- Open bearings tolerate the highest speeds in the 6400-series but need a defined regreasing interval; run-to-failure lubrication is the dominant cause of early failure in open 6415 units.
- Shaft and housing fillets must clear the bearing chamfer so the 45 mm-wide ring seats square; provide an undercut or withdrawal groove instead of relying on an oversized radius.
- The open 6415 needs external sealing and application-supplied lubrication; in the SKF catalogue the protected variants are separate order numbers 6415-2Z (shields) and 6415-2RSH (contact seals), not suffix-free 6415.
- The 153/114 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 6415 bearing?
A 6415 deep-groove ball bearing has a 75 mm bore, 190 mm outer diameter and 45 mm width (2.953 × 7.48 × 1.772 in), per ISO 15 boundary dimensions. It is an open bearing with no seals or shields.
How does the 6415 bore code work?
The last two digits of 6415 are bore code 15, giving 15 × 5 = 75 mm bore. The 190 mm outside diameter and 45 mm width follow the ISO 15 diameter series, not the bore code alone.
What does no suffix on 6415 mean?
A bare 6415 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.
How does the 6400 compare with other series at the same 75 mm bore?
The '4' is the heavy diameter series: 190×45 mm, 57.5 mm radial section at 75 mm bore — the highest-capacity single-row 6xx option here, aimed at lower-speed, high-load shafts.
What is the SKF designation and catalogue data for 6415?
In the SKF Rolling Bearings catalogue this size is listed as 6415 — the open (unsealed) execution, 75×190×45 mm per ISO 15. Quoted values: C 153 kN, C0 114 kN, Pu 4.15 kN, limiting speed 5000 r/min, mass 5800 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 6415.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-24. Read our editorial & correction policy.