SIFT BEARING STORE CATALOG

634NSKBall

634 is a NSK ball bearing, bore 4 mm, O.D. 16 mm, width 5 mm, dynamic rating 390 lbs. Dimensions, drawing, interchanges and price.

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Bore d4mm
Outside dia. D16mm
Width B5mm
Dynamic Cr390lbs
Static C0r151lbs
Limiting speed36,000rpm
Weight0.007kg
Cr / C0r2.58
Mean dia. dm10mm

Original catalogue drawing - NSK catalogue, page 13

634 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. D16 mmBore d4 mmWidth B5 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 diameter40.1575
DOutside diameter160.6299
BInner-ring / bearing width50.1969
rChamfer (min)0.3050.012

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)4.00
Bore d (in)0.1575
Outside dia. D (mm)16
Outside dia. D (in)0.6299
Width B (mm)5.00
Width B (in)0.1969

Load ratings & speeds

Basic dynamic load rating Cr (lbs)390
Basic static load rating Cor (lbs)151
Limiting speed - grease (rpm)36,000
Limiting speed - oil (rpm)43,000

Weight

Weight (kg)0.0068

Mounting dimensions (fillets / shoulders)

Chamfer r (in)0.012
Shaft shoulder (in)0.236
Housing shoulder (in)0.551

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 3,000 rpm
443464356
62892161,200
82175122,844
101731,0005,556
151163,37518,750

Basic rating life per ISO 281: L10 = (C/P)3 with C = 1,735 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.16 (dimensions) / p.16 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
634FAGBall41651.7 kN0.006
634-2RSRFAGBall41651.7 kN0.006
634-2ZFAGBall41651.7 kN0.006

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
604NSKBall4124216 lbs0.002
624NSKBall4135293 lbs0.003
684NSKBall492.5143 lbs0
684ZZ\VVNSKBall494143 lbs0.001
694NSKBall4114216 lbs0.001
R155NSKBall3.977.942.780.4 kN0.001
R156NSKBall4.767.942.780.4 kN0
R166NSKBall4.769.533.170.8 kN0.001

Request a quotation for 634

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.