6226-M (brass cage) bearing: complete specifications & equivalents

The 6226-M is a ISO 15 radial bearing sized 130 x 230 x 40 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.

Bearing dimension schematic Front view shows outer diameter D and bore d; side section shows width B. D = 230 mm d = 130 B = 40 mm side section front view
Principal dimensions: bore d 130 mm, outer diameter D 230 mm, width B 40 mm. Schematic, not to scale.

Specification table

ParameterValue
Brand SKF
Bore diameter d 130 mm
Outer diameter D 230 mm
Width B 40 mm
Material GCr15
Seal / shield open
Internal clearance CN
Tolerance class P0
Cage brass
Basic dynamic load rating C 156 kN
Basic static load rating C0 132 kN
Fatigue load limit Pu 4.15 kN
Reference speed (thermal) 5600 rpm
Limiting speed (mechanical) 5300 rpm
Operating temperature -40 to +120 °C
Mass 6950 g
Manufacturer designation 6226 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 & 6200-series range

Bore d5.118 in
Outer diameter D9.055 in
Width B1.575 in
ISO bore code26
Radial section height (D−d)/250 mm
Smallest bore in 6200-series3 mm
Largest outer diameter in 6200-series540 mm
Width range across 6200-series2.5–85 mm
Bore position in 6200-series (smallest first)33 of 45
Bore above smallest 6200-series size127 mm

Cross references & equivalents

Equivalent modelBrandMatch levelNote
6226-FAG FAG partial
Main dimensions match; tolerances, seals or internal clearance differ.
FAG bearing FAG 6226 on the same 130×230×40 mm envelope, but catalogue C/C0 differ (156/132 kN vs 177/146 kN) — envelope interchange only after a load check.
6226-ZZ-FAG FAG partial
Main dimensions match; tolerances, seals or internal clearance differ.
FAG bearing FAG 6226-2Z on the same 130×230×40 mm envelope, but catalogue C/C0 differ (156/132 kN vs 177/146 kN) — envelope interchange only after a load check.
6226-ZZ-NSK NSK partial
Main dimensions match; tolerances, seals or internal clearance differ.
NSK bearing NSK 6226ZZ on the same 130×230×40 mm envelope, but catalogue C/C0 differ (156/132 kN vs 184/146 kN) — envelope interchange only after a load check.
6226-NSK NSK partial
Main dimensions match; tolerances, seals or internal clearance differ.
NSK bearing NSK 6226 on the same 130×230×40 mm envelope, but catalogue C/C0 differ (156/132 kN vs 184/146 kN) — envelope interchange only after a load check.
6226-NTN NTN partial
Main dimensions match; tolerances, seals or internal clearance differ.
NTN bearing 6226 on the same 130×230×40 mm envelope, but catalogue C/C0 differ (156/132 kN vs 185/146 kN) — envelope interchange only after a load check.
6226-2RS-NTN NTN partial
Main dimensions match; tolerances, seals or internal clearance differ.
NTN bearing 6226LLU on the same 130×230×40 mm envelope, but catalogue C/C0 differ (156/132 kN vs 185/146 kN) — envelope interchange only after a load check.
6226-ZZ-NTN NTN partial
Main dimensions match; tolerances, seals or internal clearance differ.
NTN bearing 6226ZZ on the same 130×230×40 mm envelope, but catalogue C/C0 differ (156/132 kN vs 185/146 kN) — envelope interchange only after a load check.
6226 SKF full
Dimensions and internal design equivalent — standard interchange.
SKF SKF 6226 (open arrangement) shares the 130×230×40 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable.
6226-2RS SKF full
Dimensions and internal design equivalent — standard interchange.
SKF SKF 6226-2RS1 (two contact elastomer seals) shares the 130×230×40 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable.
6226-ZZ SKF full
Dimensions and internal design equivalent — standard interchange.
SKF SKF 6226-2Z (two non-contact shields) shares the 130×230×40 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable.

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 6226-M model number is decoded

In the 6200-series, the last two digits encode the bore: 6226 carries code 26 = 130 mm (code × 5). The envelope is 130×230×40 mm (5.118×9.055×1.575 in) with a 50.0 mm radial section height, C 156 kN, C0 132 kN and Pu 4.15 kN. The open 6226 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 5300 r/min, catalogue mass 6950 g.

Typical equipment & failure modes

Common applications

  • mill and kiln auxiliaries
  • pulp and paper machinery
  • marine deck machinery
  • crusher auxiliary drives

Known failure patterns

  • contamination wear when the open arrangement is used without external seals
  • lubricant starvation where no regreasing interval is maintained
  • brinelling from static overload or hammer blows during mounting
  • false brinelling from vibration while the shaft stands idle

Selection pitfalls — read before you substitute

  • Assign interference to the rotating ring: on a conventional shaft-mounted 130 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.
  • Assign interference to the rotating ring: on a conventional shaft-mounted 130 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 6226-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 6950 g quoted mass includes the heavier cage.
  • Open 6226-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 6226-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
  • Mount by heating the inner ring (max 120 °C) — driving 6226-M home through the outer ring or balls brinells the raceways.
  • A replacement 6226 should go onto inspected seats only: SKF mounting guidance calls for clean, burr-free journals within tolerance, since a large share of early failures traces back to damaged or worn seats.
  • Where two 6226 bearings share one shaft in a preloaded or matched arrangement, order both from the same production lot; catalogue figures describe a single bearing, not a matched set.

Frequently asked questions

What are the dimensions of 6226-M?

The SKF 6226 M measures 130 mm bore × 230 mm OD × 40 mm width (5.118 × 9.055 × 1.575 in), mass about 6950 g. It is open, with no shields or seals.

How does the bore code in 6226 work?

The final two digits of 6226 are bore code 26, multiplied by 5 to give 130 mm.

Which fits should I use for 6226-M?

With a rotating inner ring use roughly m6 on the shaft and H7 in the 230 mm housing; reverse the interference if the outer ring rotates.

How heavy is 6226-M?

Catalogue mass is 6950 g for 6226 M; seal and cage executions of the same envelope differ by a few grams.

What internal clearance does 6226-M have?

Standard supply is normal CN radial clearance unless a suffix states otherwise; for tight fits or hot shafts SKF lists the C3 execution of the same size — the residual clearance left after mounting is what governs running life.

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.