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KOYO 30309 JR bearing

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KOYO 30309 JR Bearing Details:
Bearing Name30309 JR
New Model30309JR
Old Model7309E bearing
product Model30309JR
CategoryTapered Roller Bearings
BrandKOYO Bearing
Inner Diameter d ( mm ) 45
Outer Diameter D ( mm )100
Thickness B ( mm )27.25
KOYO 30309 JR Bearing   Bearing Size and Drawing:
30309 JR
KOYO 30309 JR Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
NSK NSK31309J2/QCL7C Bearing4510027.25NSKTapered Roller Bearings
TBS 31309J2/QCL7C Bearing4510027.25TBSTapered Roller Bearings
TBS 31309 J2/Q CL7 C* Bearing4510027.25TBSTapered Roller Bearings
TBS 30309 J2/Q Bearing4510027.25TBSTapered Roller Bearings
TBS *31309J2/Q Bearing4510027.25TBSTapered Roller Bearings
TBS 31309J2/QCL7C* Bearing4510027.25TBSTapered Roller Bearings
FAG 31309 Bearing4510027.25FAGTapered Roller Bearings
KOYO 30309 JR Bearing4510027.25KOYOTapered Roller Bearings
KOYO 30309 D JR Bearing4510027.25KOYOTapered Roller Bearings
KOYO 31309 Bearing4510027.25KOYOTapered Roller Bearings

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 What are the structural components and design advantages of tapered roller bearings?
 
Tapered roller bearings consist of an inner ring, an outer ring, tapered rollers, and a cage. The rollers and raceways have a tapered design, with the extensions of all the tapered surfaces converging on the bearing axis. They offer advantages such as the ability to simultaneously withstand radial and unidirectional axial loads, high load capacity, good rigidity, adjustable clearance, and are typically used in pairs.
 
What are the advantages of tapered roller bearings compared to other similar bearings?
 
Compared to cylindrical roller bearings, tapered roller bearings can withstand larger axial loads and have a higher load capacity. Compared to angular contact ball bearings, their radial and axial load capacities are significantly higher, making them more suitable for heavy-duty impact conditions. Compared to thrust bearings, they can simultaneously withstand combined radial and axial loads, have a more compact structure, and do not require additional radial bearings.
 
What are the applicable occasions and typical applications of tapered roller bearings?
 
These bearings are suitable for heavy-duty, impact-prone mechanical applications requiring precise positioning and adjustable clearance. Typical applications include automotive wheel hubs, gearboxes, rolling mill roll necks, machine tool spindles, engineering machinery drive axles, railway vehicle axles, and mining crushing equipment.

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