SIFT BEARING STORE CATALOG

78215C/78537TimkenTapered Roller

78215C/78537 is a Timken tapered roller bearing, bore 53.98 mm, O.D. 136.53 mm, width 33.24 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d53.98mm
Outside dia. D136.53mm
Width B33.24mm
Dynamic Cr237kN
Static C0r234kN
Weight2.6kg
Cr / C0r1.01
Mean dia. dm95.2mm

Original catalogue drawing - Timken TRB Catalog, page 214

78215C/78537 Timken Tapered Roller bearing catalogue drawing

Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.

Scale cross-section

DdBOutside dia. D136.53 mmBore d53.98 mmWidth B33.24 mmCup width C23.52 mm

Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.

Dimension table (mm / inch)

SymbolDimensionmminch
dBore diameter53.9752.125
DOutside diameter136.5255.375
BInner-ring / bearing width33.2361.3085
TOverall assembly width36.5121.4375
CCup / outer-ring width23.520.926
rChamfer (min)3.30.1299

Notes

Tapered roller bearings are cone / cup assemblies; cone and cup weights are listed separately and the total is their sum. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.

Main dimensions

Bore d (mm)53.975
Bore d (in)2.1250
Outside dia. D (mm)136.525
Outside dia. D (in)5.3750
Width B (mm)33.236
Overall width T (mm)36.512
Overall width T (in)1.4375
Cup width C (mm)23.520

Load ratings & speeds

Basic dynamic load rating Cr (lbs)53200
Basic static load rating Cor (lbs)52600
Basic dynamic load rating Cr (N)237000
Basic static load rating C0r (N)234000
Dynamic rating C1 (N, ISO)237000
Dynamic rating C1 (lbf, ISO)53200
Radial rating C90 (N)61300
Radial rating C90 (lbf)13800
Thrust rating Ca90 (N)90900
Thrust rating Ca90 (lbf)20400
Static rating C0 (N)234000
Static rating C0 (lbf)52600
Factor e0.87
Factor Y0.69
Factor K0.67
Geometry factor G171.3
Geometry factor G217.6
Geometry factor Cg0.0926
Effective load centre a (mm)8.4

Weight

Weight (kg)2.6

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)77.5
Shaft shoulder db (mm)84.0
Housing shoulder Da (mm)130.0
Housing shoulder Db (mm)115.0
Cage projection Aa (mm)6.3
Cage projection Ab (mm)4.9

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
459,2501023,386
639,50039213,083
829,6251,02434,133
1023,7002,15471,814
1515,8008,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 237,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandTimken
Source catalogueTimken Tapered Roller Bearing Catalog (2016)
Catalogue pagep.214 (dimensions)
Series typeTS

ISO dynamic rating C1, Timken C90 / Ca90, static rating C0, geometry factors and assembly weight.

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
78214/78537TimkenTapered Roller53.98136.5333.24-2.5
78214C/78537TimkenTapered Roller53.98136.5333.24-2.6

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
78215C/78549DTimkenTapered Roller53.98139.777.79412 kN5.81
78215C/78551TimkenTapered Roller53.98140.0333.24237 kN2.74

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
33895/33821TimkenTapered Roller53.9895.2528.57130 kN0.8
33895/33821DTimkenTapered Roller53.9895.2563.5226 kN1.75
33895/33822TimkenTapered Roller53.9895.2528.57130 kN0.81
389A/382TimkenTapered Roller53.9898.4221.95108 kN0.69
389A/382ATimkenTapered Roller53.9896.8421.95108 kN0.64
389A/384DTimkenTapered Roller53.9810052.39188 kN1.6
389A/384EDTimkenTapered Roller53.9810049.2188 kN1.52
39578/39520TimkenTapered Roller53.98112.7130.16167 kN1.44

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