6332-M bearing: complete specifications & equivalents
The 6332-M is a ISO 15 radial bearing sized 160 x 340 x 68 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 160 mm |
| Outer diameter D | 340 mm |
| Width B | 68 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 276 kN |
| Basic static load rating C0 | 285 kN |
| Fatigue load limit Pu | 7.65 kN |
| Reference speed (thermal) | 4000 rpm |
| Limiting speed (mechanical) | 3800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 30000 g |
| Manufacturer designation | 6332 M |
| 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 & 6300-series range
| Bore d | 6.299 in |
|---|---|
| Outer diameter D | 13.386 in |
| Width B | 2.677 in |
| ISO bore code | 32 |
| Radial section height (D−d)/2 | 90 mm |
| Smallest bore in 6300-series | 2 mm |
| Largest outer diameter in 6300-series | 500 mm |
| Width range across 6300-series | 3–95 mm |
| Bore position in 6300-series (smallest first) | 34 of 40 |
| Bore above smallest 6300-series size | 158 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6332-ZZ | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | NSK bearing NSK 6332ZZ on the same 160×340×68 mm envelope, but catalogue C/C0 differ (276/285 kN vs 305/287 kN) — envelope interchange only after a load check. |
| 6332 | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | NSK bearing NSK 6332 on the same 160×340×68 mm envelope, but catalogue C/C0 differ (276/285 kN vs 305/287 kN) — envelope interchange only after a load check. |
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 6332-M model number is decoded
In the 6300-series, the last two digits encode the bore: 6332 carries code 32 = 160 mm (code × 5). The envelope is 160×340×68 mm (6.299×13.386×2.677 in) with a 90.0 mm radial section height, C 276 kN, C0 285 kN and Pu 7.65 kN. The open 6332 M carries no shields or seals and relies on application lubrication and external sealing. The M suffix identifies the machined brass cage execution, a separate order number from the pressed-steel version. Limiting speed 3800 r/min, catalogue mass 30000 g.
Typical equipment & failure modes
Common applications
- hoists and winches
- industrial fans and blowers
- mill and kiln auxiliaries
- pulp and paper machinery
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- fretting corrosion on a creeping shaft or housing seat
- cage damage from running beyond the limiting speed
Selection pitfalls — read before you substitute
- Mount by heating the inner ring (max 120 °C) — driving 6332-M home through the outer ring or balls brinells the raceways.
- Assign interference to the rotating ring: on a conventional shaft-mounted 160 mm position the inner ring rotates, so use a k5/m6 shaft seat with an H7 housing — reverse the logic if the outer ring rotates.
- The M suffix on 6332-M 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 30000 g quoted mass includes the heavier cage.
- Open 6332-M 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 6332-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- The fatigue load limit is 7.65 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
Frequently asked questions
What are the dimensions of 6332-M?
The SKF 6332 M measures 160 mm bore × 340 mm OD × 68 mm width (6.299 × 13.386 × 2.677 in), mass about 30000 g. It is open, with no shields or seals.
How does the bore code in 6332 work?
The final two digits of 6332 are bore code 32, multiplied by 5 to give 160 mm.
Which fits should I use for 6332-M?
With a rotating inner ring use roughly m6 on the shaft and H7 in the 340 mm housing; reverse the interference if the outer ring rotates.
How heavy is 6332-M?
Catalogue mass is 30000 g for 6332 M; seal and cage executions of the same envelope differ by a few grams.
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.