SIFT BEARING STORE CATALOG

312NSKCylindrical Roller

312 is a NSK cylindrical roller bearing, bore 60 mm, O.D. 130 mm, width 31 mm, dynamic rating 27,700 lbs. Dimensions, drawing, interchanges and price.

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Bore d60mm
Outside dia. D130mm
Width B31mm
Dynamic Cr27,700lbs
Static C0r28,400lbs
Limiting speed4,800rpm
Weight2.041kg
Cr / C0r0.98
Mean dia. dm95mm

Original catalogue drawing - NSK catalogue, page 55

312 NSK Cylindrical 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. D130 mmBore d60 mmWidth B31 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 diameter602.3622
DOutside diameter1305.1181
BInner-ring / bearing width311.2205

Notes

Cylindrical roller entries from the NSK inch catalogue are series numbers covering the N / NU / NJ / NUP / NH prefixes of the same size. 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)60
Bore d (in)2.3622
Outside dia. D (mm)130
Outside dia. D (in)5.1181
Width B (mm)31
Width B (in)1.2205

Load ratings & speeds

Basic dynamic load rating Cr (lbs)27700
Basic static load rating Cor (lbs)28400
Limiting speed - grease (rpm)4,800
Limiting speed - oil (rpm)5,600

Weight

Weight (kg)2.041

Mounting dimensions (fillets / shoulders)

Fillet ra max (in)0.079
Fillet rb max (in)0.079
Shaft shoulder da min (in)2.795
Housing shoulder Da max (in)0.183
Shaft shoulder db min (in)2.795
Shaft shoulder db max (in)2.953
Housing shoulder Db min (in)4.528
Housing shoulder Db max (in)4.685

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 1,600 rpm
430,8041021,058
620,5363924,089
815,4021,02410,667
1012,3222,15422,442
158,2148,32386,703

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 123,216 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.57 (dimensions) / p.58 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
1312-K-TVH-C3FAGBall601303158 kN1.94
1312-TVHFAGBall601303158 kN1.97
6312FAGBall601303181.5 kN1.75
6312-2RSRFAGBall601303181.5 kN1.79
6312-2ZFAGBall601303181.5 kN1.79
6312-CFAGBall601303189 kN1.71
6312-C-2BRSFAGBall601303189 kN1.75
6312-C-2HRSFAGBall601303189 kN1.75
6312-C-2ZFAGBall601303189 kN1.74
QJ312-MPAFAGBall6013031146 kN2.2

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
1312NSKBall601303112,800 lbs2.032
6312NSKBall601303118,400 lbs1.701
7312BNSKBall601303119,100 lbs2
BL312NSKBall601303122,700 lbs1.846
NU312NSKCylindrical Roller6013031152 kN1.82
NU312ENSKCylindrical Roller6013031184 kN2.06
21312EAE4NSKSpherical Roller6013031238 kN1.98
HR30312NSKTapered Roller6013031214 kN2.03

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
1012NSKCylindrical Roller6095189,020 lbs0.467
212NSKCylindrical Roller601102215,400 lbs0.839
2212NSKCylindrical Roller601102821,600 lbs1.066
2312NSKCylindrical Roller601304637,800 lbs2.644
412NSKCylindrical Roller601503537,600 lbs2.994
NU1012NSKCylindrical Roller60951849.5 kN0.474
NU212ENSKCylindrical Roller6011022120 kN0.824
NU2212ENSKCylindrical Roller6011028161 kN1.06

Request a quotation for 312

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