Description
Brand - TIMKEN
Item Number - NA48990SW/48920D TIMKEN
Also Known As - NA48990SW - 48920D
Category - Double Row Tapered Roller Bearing (TNASWE Type)
Bore Diameter (d) mm - 152.4
Bore Diameter (d) inch - 6
Outer Diameter (D) mm - 211.138
Outer Diameter (D) inch - 8.3125
Width (T) mm - 92.075
Width (T) inch - 3.625
Double Outer Ring Width (C) mm - 69.85
Double Outer Ring Width (C) inch - 2.75
Dynamic Load Rating (C1) N - 508000
Dynamic Load Rating (C1) lbf - 114000
Factor (e) - 0.36
Factor (Y1) - 1.89
Factor (Y2) - 2.82
Dynamic Radial Rating (90 million revolutions) (C90) N - 75600
Dynamic Radial Rating (90 million revolutions) (C90) lbf - 17000
Basic Dynamic Thrust Load Rating (90 Million Revolution) (Ca90) N - 46200
Basic Dynamic Thrust Load Rating (90 Million Revolution) (Ca90) lbf - 10400
Dynamic Radial Rating (Two-Row, 90 million revolutions) (C90(2)) N - 132000
Dynamic Radial Rating (Two-Row, 90 million revolutions) (C90(2)) lbf - 29600
Ratio of Basic Dynamic Radial Load Rating to Basic Dynamic Thrust Rating (K) - 1.64
Outside Diameter of Rib (d1) mm - 183.096
Outside Diameter of Rib (d1) inch - 7.2085
Maximum Shaft Fillet Radius (R) mm - 3.5
Maximum Shaft Fillet Radius (R) inch - 0.14
Backing Shoulder Diameter (db) mm - 168
Backing Shoulder Diameter (db) inch - 6.61
Maximum Housing Fillet Radius (r) mm - 0.8
Maximum Housing Fillet Radius (r) inch - 0.03
Cup Frontface Backing Diameter (Da) mm - 204
Cup Frontface Backing Diameter (Da) inch - 8.03
Weight (kg) - 9.26
Weight (lbs) - 20.399
Inner Part Number - NA48990SW
Outer Part Number - 48920D
TNASWE - Double-Row Bearings are a Variant of Type TNA, with Lubricant Slots and Extended Back Face Rib
** Images are for representation purposes only




