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331978 BG Four-row tapered roller bearings
Dimensions: Bore (Inner) Diameter: 540 mm； Outer Diameter: 690 mm； Width (Thickness): ;

331978 BG
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Product Attributes
Product Number331978 BG
System of MeasurementMetric
Bearing TypeRoller
Roller Bearing TypeTapered Roller
TypeBearing
For Load DirectionCombined Radial and Thrust
ConstructionFour-row
Seal TypeOpen
Bore Dia540 mm
Bore Dia Tolerance-0.05mm to 0
Outer Dia690 mm
Outer Dia Tolerance-0.075mm to 0
Total Bearing Width Over Inner Rings400 mm
Total Bearing Width Over Outer Rings400 mm
Ring Material52100 Chrome Steel
Cage MaterialSteel
Roller Material52100 Chrome Steel
Dynamic Radial Load1683000 lbf
Static Radial Load4770000 lbf
LubricationRequired
Temperature Range-30° to 110 °C
ABEC RatingABEC-1
RoHSCompliant
REACHCompliant
Weight820.12 lb
Radial ClearanceStandard (Available in C3/C4/C5)
331978 BG
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