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SKF / Spherical roller bearings

SKF 238/1180 CAKFA/W20

Spherical roller bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
1180 mm
Outside diameterD
1420 mm
WidthB
180 mm
Dynamic load ratingC
6778 kN
Static load ratingC0
18600 kN
Limiting speednG
320 r/min

Use this page as a technical reference. Verify the current manufacturer specification and the complete application requirements before selection.

Technical data

Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications15 parameters
Core specifications
ParameterSymbolValue
Variant / constructionSpherical roller bearings
Bore diameterd1180 mm
Outside diameterD1420 mm
WidthB180 mm
Basic dynamic load ratingC6778 kN
Basic static load ratingC018600 kN
Fatigue load limitPu1060 kN
Reference speednref170 r/min
Limiting speednG320 r/min
Mass≈m555 kg
Precision classNormal
Internal clearanceCN
SealingWithout
CageMachined metal
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter1180.0 mm
Outside diameter1420.0 mm
Width180.0 mm
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categorySpherical roller bearings
Official taxonomy path/products/rolling-bearings/roller-bearings/spherical-roller-bearings
Structure group IDBS2_001
Available from SKFYes
RemanufacturableYes
Engineering — Abutment dimensions2 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of housing abutmentD amax. 1397 mm
Radius of filletr amax. 5 mm
Engineering — Calculation data10 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC6778 kN
Basic static load ratingC 018600 kN
Fatigue load limitP u1060 kN
Reference speed170 r/min
Limiting speed320 r/min
Limiting valuee0.11
Calculation factorY 16.1
Calculation factorY 29.1
Calculation factorY 06.3
Engineering — Dimensions12 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd1180 mm
Deviation limits of mid-range bore diametert Δdmp0 to 0.105 mm
Deviation limits of tapered slopet ΔSL0 to 0.105 mm
Outside diameterD1420 mm
Deviation limits of mid-range outside diametert ΔDmp-0.16 to 0 mm
WidthB180 mm
Deviation limits of ring widtht ΔBs-1.25 to 0 mm
Shoulder diameter of inner ringd 2≈ 1264 mm
Shoulder/recess diameter of outer ringD 1≈ 1355 mm
Diameter of lubrication holeK12 mm
Chamfer dimensionr 1,2min. 6 mm
ISO tolerance class for dimensionsNormal
Engineering — Engineering specifications1 parameter
Engineering — Engineering specifications
ParameterSymbolValue
Bore typeTapered 1:12
Engineering — Radial internal clearance2 parameters
Engineering — Radial internal clearance
ParameterSymbolValue
Minimum initial clearance830 µm
Maximum initial clearance1120 µm
Engineering — Tolerances of run-out3 parameters
Engineering — Tolerances of run-out
ParameterSymbolValue
Range of section height at inner ring of assembled bearingt Kia100 µm
Range of section height at outer ring of assembled bearingt Kea190 µm
ISO tolerance class for geometrical tolerancesNormal
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight555.0 kg
eClass code23-05-09-11
UNSPSC code31171510
Performance5 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating6778.0 kN
Basic static load rating18600.0 kN
Reference speed170.0 r/min
Limiting speed320.0 r/min
SKF performance classSKF Explorer
Properties13 parameters
Properties
ParameterSymbolValue
Number of rows2
Locating feature, bearing outer ringWithout
Bore typeTapered 1:12
CageMachined metal
Radial internal clearanceCN
Tolerance class for dimensionsNormal
Tolerance class for run-outNormal
SealingWithout
LubricantNone
Relubrication featureWith
Candidate for remanufacturingYes
Indicative carbon footprint for new product2054.0 kg CO 2 e
Indicative carbon footprint for remanufactured product683.0 kg CO 2 e

Technical documents & data sheet

This product page is a BearingScope catalogue reference, not a manufacturer-certified drawing. Preserve the full brand and designation when comparing files.

Record identity
SKF 238/1180 CAKFA/W20
Document matching
Exact designation, assembly scope, revision and units must agree.

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