SIFT BEARING STORE CATALOG

30344NSKTapered Roller

30344 is a NSK tapered roller bearing, bore 220 mm, O.D. 460 mm, width 88 mm, dynamic rating 321,000 lbs. Dimensions, drawing, interchanges and price.

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Bore d220mm
Outside dia. D460mm
Width B88mm
Dynamic Cr321,000lbs
Static C0r447,000lbs
Limiting speed750rpm
Weight72.411kg
Cr / C0r0.72
Mean dia. dm340mm

Original catalogue drawing - NSK catalogue, page 107

30344 NSK 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. D460 mmBore d220 mmWidth B88 mmCup width C73 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 diameter2208.6614
DOutside diameter46018.1102
BInner-ring / bearing width883.4646
TOverall assembly width973.8189
CCup / outer-ring width732.874

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)220
Bore d (in)8.6614
Outside dia. D (mm)460
Outside dia. D (in)18.1102
Width B (mm)88
Width B (in)3.4646
Overall width T (mm)97
Overall width T (in)3.8189
Cup width C (mm)73
Cup width C (in)2.8740

Load ratings & speeds

Basic dynamic load rating Cr (lbs)321000
Basic static load rating Cor (lbs)447000
Limiting speed - grease (rpm)750
Limiting speed - oil (rpm)1,000

Weight

Weight (kg)72.411

Mounting dimensions (fillets / shoulders)

Chamfer r (in)0.16
Shaft shoulder da min (in)9.961
Housing shoulder Da max (in)17.244
Shaft shoulder db max (in)11.142

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 200 rpm
4356,9701028,466
6237,98039232,708
8178,4851,02485,333
10142,7882,154179,536
1595,1928,323693,622

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,427,879 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.109 (dimensions) / p.110 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
6344-MFAGBall22046088440 kN73.7
QJ344-N2-MPAFAGBall22046088900 kN77.1
NU344-E-M1FAGCylindrical Roller220460881430 kN75.5
NU344-E-TB-M1FAGCylindrical Roller220460881440 kN75.5
30344FAGTapered Roller220460881440 kN68

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
344NSKCylindrical Roller22046088268,000 lbs74.843
NU344NSKCylindrical Roller220460881470 kN74.6

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30244NSKTapered Roller22040068182,000 lbs33.607
32344NSKTapered Roller220460145454,000 lbs114.02
HR32044XJNSKTapered Roller22034076885,000 lbs24.403
HR32244JNSKTapered Roller220400108326,000 lbs59.407
HR32944NSKTapered Roller22030051600 kN10.3
HR32944JNSKTapered Roller22030051110,000 lbs10.301

Request a quotation for 30344

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.

Online enquiry formrichard@bearingsfit.com