SIFT BEARING STORE CATALOG

7221CNSKPrecision / Angular Contact

7221C is a NSK precision / angular contact bearing, bore 105 mm, O.D. 190 mm, width 36 mm. Dimensions, drawing, interchanges and price.

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Bore d105mm
Outside dia. D190mm
Width B36mm
Dynamic Cr36,600lbs
Static C0r32,200lbs
Limiting speed7,800rpm
Weight3.729kg
Cr / C0r1.14
Mean dia. dm147.5mm

Original catalogue drawing - NSK catalogue, page 195

7221C NSK Precision / Angular Contact 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. D190 mmBore d105 mmWidth B36 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 diameter1054.1339
DOutside diameter1907.4803
BInner-ring / bearing width361.4173

Notes

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)105
Bore d (in)4.1339
Outside dia. D (mm)190
Outside dia. D (in)7.4803
Width B (mm)36
Width B (in)1.4173

Load ratings & speeds

Basic dynamic load rating Cr (lbs)36600
Basic static load rating Cor (lbs)32200
Limiting speed - grease (rpm)7,800
Limiting speed - oil (rpm)11,900

Weight

Weight (kg)3.729

Mounting dimensions (fillets / shoulders)

Fillet ra (in)0.079
Fillet rb (in)0.039
Shaft shoulder da (in)4.606
Housing shoulder Da (in)7.008
Housing shoulder Db (in)7.205

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 2,600 rpm
440,70164410
627,1342161,385
820,3515123,282
1016,2801,0006,410
1510,8543,37521,635

Basic rating life per ISO 281: L10 = (C/P)3 with C = 162,805 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandNSK
Source catalogueNSK inch product catalogue
Catalogue pagep.197 (dimensions) / p.198 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
1221-MFAGBall1051903675 kN4.75
6221FAGBall10519036141 kN3.88
6221-2RSRFAGBall10519036141 kN3.73
6221-2ZFAGBall10519036141 kN3.99
QJ221-N2-MPAFAGBall10519036233 kN4.81
N221-E-M1FAGCylindrical Roller10519036310 kN4.63
N221-E-XL-M1FAGCylindrical Roller10519036310 kN4.63
NJ221-E-TVP2FAGCylindrical Roller10519036310 kN4.17
NJ221-E-XL-TVP2FAGCylindrical Roller10519036310 kN4.17
NU221-E-TVP2FAGCylindrical Roller10519036310 kN4.08

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
1221NSKBall1051903682.5 kN4.43
6221NSKBall1051903629,900 lbs3.697
7221BNSKBall1051903630,400 lbs4.4
BL221NSKBall1051903639,200 lbs4.173
221NSKCylindrical Roller1051903645,100 lbs4.051
HR30221NSKTapered Roller10519036345 kN4.51
HR30221JNSKTapered Roller1051903662,900 lbs4.509
7221NSKPrecision / Angular Contact10519036172 kN3.84

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
105BAR10SNSKPrecision / Angular Contact10516024.7511,128 lbs1.737
105BNC10NSKPrecision / Angular Contact1051602612,590 lbs1.728
105BNC10SN24NSKPrecision / Angular Contact1051602612,590 lbs1.728
105BTR10SNSKPrecision / Angular Contact10516024.7513,151 lbs1.742
7021NSKPrecision / Angular Contact1051602688 kN1.84
7021A5NSKPrecision / Angular Contact1051602618,700 lbs1.819
7021CNSKPrecision / Angular Contact1051602619,800 lbs1.801
7221NSKPrecision / Angular Contact10519036172 kN3.84

Request a quotation for 7221C

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.