Product Details

NNU4988 KOYO Double-row cylindrical roller bearings

Brand Name KOYO
Model Number NNU4988
Min.Order Quantity 1 pcs
Price Negotiable

Product Features

da (min)308 mm
Roller ProfileSymmetric
Bore TypeTapered Bore
EnclosureOpen
Limiting Speed - Grease840 rpm
Axial Load Factor Y02.03
Groove Width A32 mm
Axial Load Factor Y12.07
Limiting Speed - Oil1,000 rpm
Radial Clearance0.300 to 0.390 mm
D580 mm
Dynamic Load Rating4,950,000 N
d280 mm
Fillet Radius/Chamfer6 mm
Center GuidanceFixed Inner Ring Rib
ConfigurationDouble Row
ra (max)5 mm
Axial Load Factor Y23.09
B175 mm
Nr. of Holes8

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4CR6 KOYO Four-row cylindrical roller bearingsWeight:0.50 lb; Sub Series:GYA..RR; Set Screw Size:M5X.8; Angle between Set Screws:90 º; Static Load Rating:1070 lbf; Center of Bearing from End S:7.95 mm; O.D. Type:Cylindrical OD; Dynamic Load Rating:2380 lbf; Outside Diameter D:1.575 in; Set Screw Distance S2:4.75 mm; Radius r:0.6 mm; Lubrication
120FC8764 KOYO Four-row cylindrical roller bearingsB:15.497 mm; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:1180 lbf; Aa - Cage-Cone Backface Clearance:0.3 mm; R - Cone Backface To Clear Radius1:1.270 mm; G1 - Heat Generation Factor (Roller-Raceway):8.2; Db - Cup Backface Backing Diameter:39.62 mm; B - Cone Width:16.637 mm; Cg - Geometry
4CR600B KOYO Four-row cylindrical roller bearingsDesign Units:Imperial; Series:HM926700; C - Double Cup Width:3.3125 in; Y1 - ISO Factor5:0.92; Da - Cup Frontface Backing Diameter:8.64 in; Y - ISO Factor1:0.81; K - Factor3:0.79; r - Cup Frontface To Clear Radius2:0.090 in; Cg - Geometry Factor7:0.142; e - ISO Factor4:0.74; D:9.0000 in; Y2 - ISO Fa
122FC8557 KOYO Four-row cylindrical roller bearingsUPC Code:0883450030007; Dimension G:3.380 in; Dimension D Min:8.00 in; Shaft Size Type:Metric; Dimension L:4.02 in; Shaft Tolerance:0.0020 in; Oil Lubrication - B/C/O Seal:1300 rpm; Dimension J (Bolt Size):0.625 in; C - Dynamic Load (Basic):49900 lb; Eng Internal Radial Clearance - Max:0.0031; Greas
4CR600A KOYO Four-row cylindrical roller bearingsB:24 mm; Groove Diameter:145.2 mm; a (max):3.7 mm; D:150 mm; Radial Clearance:0.030 to 0.058 mm; Static Load Rating:54,000 N; da (min):107 mm; Factor fo:15.9; r1:0.5 mm; Enclosure:Open; Cy (max):6.1 mm; Fillet Radius/Chamfer:1.5 mm; d:100 mm; Groove Width:3.1 mm; Limiting Speed - Oil:5,300 rpm; Limi
122FC8766 KOYO Four-row cylindrical roller bearingsCage Material:Brass; d:600.000 mm; Reference Thermal Speed Rating (Grease):180; Reference Thermal Speed Rating (Oil)7:190; B - Outer Ring Width:388.000 mm; Y0 - ISO Factor4:1.94; Da - Outer Ring Backing Diameter:975.600 mm; Bearing Weight:1565.100 Kg; Design Unit:METRIC; da - Inner Ring Backing Diam
126FC8036 KOYO Four-row cylindrical roller bearingsD:10.0384 in; C - Double Cup Width:4.375 in; Da - Cup Frontface Backing Diameter:9.38 in; Design Units:Imperial; Y2 - ISO Factor6:2.47; Y - ISO Factor1:1.47; Y1 - ISO Factor5:1.66; e - ISO Factor4:0.41; Series:99000; Cg - Geometry Factor7:0.143; K - Factor3:1.43; r - Cup Frontface To Clear Radius2:0
120FC87540A KOYO Four-row cylindrical roller bearingsSupport Type:Take-Up; Dimension W:2.0 in; Dimension R:2.0 in; Dimension X:1.9 in; Bearing UPC:013992039347; Dimension V:8.0 in; Dimension N:18.3 in; Dimension S:3.4 in; Ca - Axial Load Rating:8588 lbf; Series Type:Medium Series; Cor - Static Load Rating:157366 lbf; Bearing Number:MSE412BR; Maximum S

 

 

NNU4988 KOYO Double-row cylindrical roller bearings Video

 

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