NA28138 / 28318D
-
All Data Sourced from Official Brands
-
Brand Alternative Bearings with Identical Specifications
-
Customized Bearing Solutions Based on Parameters
-
Fast Quotation Response
-
OEM and Flexible Order Quantities Supported
Specifications
Availability: 100 pcs
Brand: HSN/ TIMKEN/ OEM
Bearing Number: NA28138 / 28318D
Category: Tapered Roller Bearings
1
Weight and Dimensions
Bore (d): 34.976 mm 1.3770 in
Outer (D): 80.035 mm 3.1510 in
Width (T): 46.040 mm 1.8126 in
Width (C): 34.925 mm 1.3750 in
Weight: 1.04 kg
Data from Timken (medias)
Dynamic Radial Load Rating – 1M Revs (C1) : 111000 N
Dynamic Radial Load Rating – 90M Revs (C90) : 19500 N
Dynamic Radial Load Rating 2-Row – 90M Revs (C90-2row): 34000 N
Dynamic Axial Rating – 90M Revs (Ca90): 13400 N
e Factor: 0.4
K Factor: 1.45
Product Properties
Precision: P0, P6, P5
Hardness: HRC58-62
Ring Material: GCr15, GCr15SiMn, 100CrMnSi6-4, etc.
Cage Material: Brass, Steel
Certificate: ISO9001:2015
1
Downloads & Links
Timken Tapered Roller Bearings Guide
Product Description
The NA28138 / 28318D 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 NA28138 / 28318D 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.
Need a Professional Bearing Replacement Solution?
Our technical team is ready to recommend the right replacement or custom bearing solution for your application.
