NA691A / 672D
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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: NA691A / 672D
Category: Tapered Roller Bearings
1
Weight and Dimensions
Bore (d): 100.000 mm 3.9370 in
Outer (D): 168.275 mm 6.6250 in
Width (T): 92.075 mm 3.6250 in
Width (C): 69.850 mm 2.7500 in
Weight: 7.62 kg
Data from Timken (medias)
Dynamic Radial Load Rating – 1M Revs (C1) : 461000 N
Dynamic Radial Load Rating – 90M Revs (C90) : 68600 N
Dynamic Radial Load Rating 2-Row – 90M Revs (C90-2row): 119000 N
Dynamic Axial Rating – 90M Revs (Ca90): 55300 N
e Factor: 0.47
K Factor: 1.24
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 NA691A / 672D Timken TNA tapered roller bearing features a double-row tapered roller design with two single inner rings and a double outer ring. The extended inner-ring front faces are designed to abut directly, eliminating the need for an inner-ring spacer and providing a compact, pre-set bearing configuration. This non-adjustable design is supplied with built-in clearance, ensuring reliable operation, stable load distribution, and consistent performance under demanding conditions.
The NA691A / 672D TNA bearing is widely used in industrial equipment, heavy-duty gearboxes, construction machinery, mining equipment, and other applications where reliable load support, easy installation, and compensation for shaft expansion are required.
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