Technical Specification Sheet — NTN 4T-JHM318448

Identification

• Brand: NTN
• Item Number / Part No.: 4T-JHM318448
• EAN: 4547359478853
• Category: Cone for Tapered Roller Bearings, Single Row
• Country of Origin: Japan

Dimensions & Weight

Metric

• Inner Diameter (d): 90 mm
• Width (B): 44 mm
• Weight: 2.3 kg

Inch

• Inner Diameter (d): 3.5433 in
• Width (B): 1.7323 in

Product Description

The NTN 4T-JHM318448 is a cone component for a single-row tapered roller bearing. This cone includes the inner ring and rollers. When paired with a corresponding cup (outer ring), it forms a complete tapered roller bearing. The tapered design allows the bearing to handle both radial and axial loads in a single direction.

Tapered roller bearings minimize sliding movements between raceways and rollers, reducing wear. They require a minimum load for optimal performance. Because the cone and cup are separable, installation is straightforward, and axial clearance or preload can be adjusted during assembly.

For reliable operation, it's recommended to replace both cone and cup together with components from the same manufacturer to ensure proper fit and performance.