C41-600-MB bearing: complete specifications & equivalents

The C41-600-MB is a ISO 15 radial bearing sized 600 x 980 x 375 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 = 980 mm d = 600 B = 375 mm side section front view
Principal dimensions: bore d 600 mm, outer diameter D 980 mm, width B 375 mm. Schematic, not to scale.

Specification table

ParameterValue
Brand SKF
Bore diameter d 600 mm
Outer diameter D 980 mm
Width B 375 mm
Material GCr15
Seal / shield open
Internal clearance CN
Tolerance class P0
Cage brass
Basic dynamic load rating C 12900 kN
Basic static load rating C0 23200 kN
Fatigue load limit Pu 1460 kN
Reference speed (thermal) 340 rpm
Limiting speed (mechanical) 450 rpm
Operating temperature -40 to +120 °C
Mass 1150000 g
Manufacturer designation C 41/600 MB
Standard ISO 15
Catalog version SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings
Last verified 2026-09-27

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings) · extracted 2026-09-27

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings); 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 & C4100-series range

Bore d 23.622 in
Outer diameter D 38.583 in
Width B 14.764 in
ISO bore code —
Radial section height (D−d)/2 190 mm
Smallest bore in C4100-series 100 mm
Largest outer diameter in C4100-series 1090 mm
Width range across C4100-series 65–412 mm
Bore position in C4100-series (smallest first) 13 of 14
Bore above smallest C4100-series size 500 mm

Cross references & equivalents

Equivalent modelBrandMatch levelNote
C41-600-K30MB SKF full
Dimensions and internal design equivalent — standard interchange.
Same 600×980×375 mm ISO 15 envelope and equivalent catalogue C/C0; C 41/600 K30MB is the 1:30 tapered-bore K30 MB inner-ring-guided brass-caged execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ.

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 C41-600-MB model number is decoded

C 41/600 MB is the dimension series 41 CARB toroidal roller bearings member of the CARB range: 600 mm bore, 980 mm OD, 375 mm width, with the asymmetrical-looking toroidal roller set that defines the CARB principle. The designation C 41/600 MB separates into C (CARB), 41 (dimension series), 600 mm (slash-size) (600 mm bore — bore 600 mm is written directly after the slash) and MB (cylindrical bore for direct shaft fitting, machined inner-ring-guided brass cage (MB)); envelope 600×980×375 mm follows the ISO 15 plan. The cylindrical 600 mm bore mounts directly on a machined seat; the outer ring takes a loose housing fit so the bearing can float axially. The same size is listed in both bore executions, and the boundary dimensions 600×980×375 mm are identical — only the mounting method changes. The 1150000 g mass over the 600×980×375 mm envelope yields about 21.50 kN dynamic per millimetre of bore — the long toroidal rollers give this family its radial capacity density. Open executions accept relubrication — route it through the outer-ring groove on sizes that have one and purge stale grease at service intervals. Grease through the annular groove features where provided; on open executions feed lubricant past the long roller set at assembly, since the 375 mm wide cavity does not fill itself.

Typical equipment & failure modes

Common applications

  • long fan and kiln main shafts where the free end must float without thrust load
  • heavy industrial gearbox layshafts used as the non-locating position
  • winder and reel drums in paper and steel strip plants
  • paper machine drying cylinders and calender rolls with long, thermally expanding shafts

Known failure patterns

  • raceway spalling once the catalogue L10 life is exceeded or after sustained overload
  • thermal preloading when a shaft is located at both ends and growth has nowhere to go
  • brass cage pocket wear under marginal lubrication in the large-bore M/MB executions
  • brinelling of washer raceways from impact or mounting force applied through the rolling elements
  • oil starvation at the sliding contact zones of large spherical roller thrust bearings on forced-feed trips

Selection pitfalls — read before you substitute

  • At 600 mm bore the 1150 kg mass and 375 mm width make seating geometry dominant: sphered-washer seats and oil flow must be verified in place, not just on the drawing.
  • Reference and limiting speeds are different limits: the 340 r/min reference speed is the thermal criterion under load, the limiting value is the mechanical ceiling; observe the reference under load unless the arrangement calculation says otherwise.
  • The quoted 12900/23200 kN ratings belong to this exact execution (C 41/600 MB); VE240 vibrating-screen variants and sealed 2CS/2NS variants have their own figures even at the same envelope.
  • Do not block the axial displacement in the drawing: housing covers, labyrinth rings and snap rings must leave the catalogue float (s) free, or the bearing silently becomes a poorly located fixed bearing.
  • Envelope-identical spherical roller bearings (same ISO 15 d×D×B) are not drop-in equivalents — they locate the shaft axially, while C 41/600 MB must float; the two are designed to be used as a pair.
  • The 12900/23200 kN ratings and 1150000 g mass are SKF catalogue values transcribed from ch. 10.1 of PUB BU/P1 17000 (PDF table page 866); mounting data — axial displacement (s) and seating details — appears in the running text because the structured record carries the boundary envelope only.

Frequently asked questions

How is C 41/600 MB mounted?

Slide or heat (max 120 °C) the bearing onto the 600 mm seat, give the outer ring a loose housing fit, leave the float travel unobstructed, and never press through the 375 mm roller set.

What are the dimensions and ratings of the C 41/600 MB?

A C 41/600 MB measures 600 mm bore × 980 mm outside diameter × 375 mm width (23.622 × 38.583 × 14.764 in). From SKF catalogue PUB BU/P1 17000: dynamic C 12900 kN, static C0 23200 kN, fatigue limit Pu 1460 kN, reference speed 340 r/min, limiting speed 450 r/min, mass about 1150000 g.

Can a CARB bearing like C 41/600 MB locate the shaft axially?

No — that is the defining feature. C 41/600 MB deliberately allows the inner ring to float axially inside the outer ring while the toroidal rollers self-align. It must be paired with a separate locating bearing (spherical, tapered or angular contact) that takes 100 % of the thrust.

How is the C 41/600 MB designation read?

C = CARB toroidal family; 41 = dimension series; 600 mm (slash-size) = 600 mm bore (the bore is written directly after the slash (no bore code)); suffix MB selects cylindrical bore for direct shaft fitting, machined inner-ring-guided brass cage (MB). K is a 1:12 tapered bore for an adapter sleeve, K30 a 1:30 bore for a withdrawal sleeve.

Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings on 2026-09-27. Read our editorial & correction policy.