SIFT BEARING STORE CATALOG

BL221NSKBall

BL221 is a NSK ball bearing, bore 105 mm, O.D. 190 mm, width 36 mm, dynamic rating 39,200 lbs. Dimensions, drawing, interchanges and price.

Request a quoteEmail usSearch the catalog
Bore d105mm
Outside dia. D190mm
Width B36mm
Dynamic Cr39,200lbs
Static C0r35,300lbs
Limiting speed3,400rpm
Weight4.173kg
Cr / C0r1.11
Mean dia. dm147.5mm

Original catalogue drawing - NSK catalogue, page 43

BL221 NSK Ball 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
rChamfer (min)2.0070.079

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)39200
Basic static load rating Cor (lbs)35300
Limiting speed - grease (rpm)3,400
Limiting speed - oil (rpm)4,000

Weight

Weight (kg)4.173

Mounting dimensions (fillets / shoulders)

Chamfer r (in)0.079
Shaft shoulder da min (in)4.570
Shaft shoulder da max (in)5.024
Housing shoulder Da max (in)7.053

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 1,100 rpm
443,59364970
629,0622163,273
821,7965127,758
1017,4371,00015,152
1511,6253,37551,136

Basic rating life per ISO 281: L10 = (C/P)3 with C = 174,370 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.45 (dimensions) / p.46 (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
221NSKCylindrical Roller1051903645,100 lbs4.051
HR30221NSKTapered Roller10519036345 kN4.51
HR30221JNSKTapered Roller1051903662,900 lbs4.509
7221NSKPrecision / Angular Contact10519036172 kN3.84
7221A5NSKPrecision / Angular Contact1051903634,800 lbs3.769

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
1221NSKBall1051903682.5 kN4.43
1321NSKBall10522549169 kN9.58
16021NSKBall1051601857 kN1.24
2221NSKBall10519050120 kN5.73
6021NSKBall1051602616,300 lbs1.592
6221NSKBall1051903629,900 lbs3.697
6321NSKBall1052254941,300 lbs8.119
6821NSKBall105130134,440 lbs0.313

Request a quotation for BL221

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.