BRAND: NTN

ID: HM804840/HM804810

Description:

 

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HM804840/HM804810 – NTN Single-Row Tapered Roller Bearing (Cup & Cone Set)

Brand: NTN
Item Number: HM804840/HM804810
Also Known As: 4T-HM804840/810, 4T-HM804840/HM804810, HM804840/810
Category: Tapered Roller Bearing – Single Row
Country of Origin: Japan (typical for NTN 4T-series)

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Product Description

The NTN HM804840/HM804810 is a single-row tapered roller bearing consisting of a cone assembly (HM804840) and a cup (HM804810).
This bearing design features tapered raceways and rolling elements that can support combined radial and axial loads, making it ideal for demanding applications such as gearboxes, hubs, and heavy-duty machinery.

The tapered construction allows for excellent alignment, high rigidity, and long service life. The 4T-series NTN design enhances surface finish and roller geometry for improved performance and reduced friction.

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Technical Specifications

Parameter	Metric	Imperial
Inner Diameter (d)	41.28 mm	1.625 in
Outer Diameter (D)	95.25 mm	3.75 in
Width (B)	30.16 mm	1.1875 in
Weight	1.06 kg	—

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Design Features

• Type: Tapered Roller Bearing – Single Row (Cup & Cone Set)
• Series: NTN 4T (High-load, precision-ground design)
• Material: High-carbon chromium bearing steel
• Construction: Open design (separable cup and cone)
• Precision Class: P0 / Standard (ABEC 1 equivalent)
• Lubrication: Standard factory oil coating
• Operating Temperature Range: −30 °C to +120 °C

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Performance Characteristics

• Handles high radial and axial loads in one direction.
• Easy to assemble/disassemble (separable components).
• Capable of being installed in X, O, or tandem arrangements for multi-directional load support.
• Excellent durability and shock resistance for industrial and automotive use.

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Typical Applications

• Automotive wheel hubs and axles
• Gearboxes and transmissions
• Agricultural and construction equipment
• Industrial drives and heavy-duty machinery