NA3780SW / 3729D
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All Data Sourced from Official Brands
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Brand Alternative Bearings with Identical Specifications
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Customized Bearing Solutions Based on Parameters
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Fast Quotation Response
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OEM and Flexible Order Quantities Supported
Specifications
Availability: 100 pcs
Brand: HSN/ TIMKEN/ OEM
Bearing Number: NA3780SW / 3729D
Category: Tapered Roller Bearings
1
Weight and Dimensions
Bore (d): 50.800 mm 2.0000 in
Outer (D): 93.264 mm 3.6718 in
Width (T): 65.088 mm 2.5625 in
Width (C): 52.388 mm 2.0625 in
Weight: 1.81 kg
Data from Timken (medias)
Dynamic Radial Load Rating – 1M Revs (C1): 213000 N
Dynamic Radial Load Rating – 90M Revs (C90): 31700 N
Dynamic Radial Load Rating 2-Row – 90M Revs (C90-2row): 55100 N
Dynamic Axial Rating – 90M Revs (Ca90): 18300 N
e Factor: 0.34
K Factor: 1.73
Product Properties
Precision: P0, P6, P5
Hardness: HRC58-62
Ring Material: GCr15, GCr15SiMn, 100CrMnSi6-4, etc.
Cage Material: Brass, Steel
Certificate: ISO9001:2015
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Downloads & Links
Timken Tapered Roller Bearings Guide
Product Description
The NA3780SW / 3729D TNASW tapered roller bearing features a double-row tapered roller design with two single inner rings and a double outer ring. The inner ring front faces are designed with chamfers and lubrication slots, providing improved lubrication performance and reliable operation under demanding conditions. The extended cone front faces abut directly, eliminating the need for a separate inner-ring spacer. This non-adjustable design is supplied with built-in clearance, ensuring stable load distribution and consistent performance for fixed and floating bearing applications.
The NA3780SW / 3729D TNASW bearing is widely used in industrial equipment, heavy-duty gearboxes, construction machinery, mining equipment, and other applications where reliable load support, easy installation, and long service life are required.
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