Komatsu 561-50-82311 Spherical Bushing

Replaces 561-50-82310 | 9014082 mm Radial Spherical Plain Bearing

The Komatsu 561-50-82311 spherical bushing, superseding 561-50-82310, is a heavy-duty radial spherical plain bearing engineered for high-load suspension and articulated joint applications in Komatsu equipment.

This component corresponds to the following verified bearing dimensions based on published manufacturer catalog specifications (2023):

• Inner Diameter (d): 90 mm

• Outer Diameter (D): 140 mm

• Overall Width (B): 82 mm

• Inner Ring Width (C): 65 mm

• Approximate Weight: 4.68 kg

These dimensions place it within a specialized heavy-equipment spherical bearing class not a standard light-duty catalog size making dimensional verification critical when sourcing replacements.

Engineered for Severe Load & Articulation

Radial spherical plain bearings of this size are designed to:

• Support extremely high radial loads

• Accommodate shaft misalignment

• Absorb shock and vibration

• Perform in articulated suspension assemblies

Typical applications include:

• Heavy dump truck suspension systems

• Axle support frame joints

• Rear strut or lug assemblies

• High-load pivot connections

Because this is a spherical plain bearing not a deep groove ball bearing proper identification is essential. Incorrect substitutes can result in premature failure and costly downtime.

Supersession Information

• 561-50-82310 replaced by 561-50-82311

• Both numbers reference the same core geometry and function

• Always confirm by machine serial number when servicing legacy units

For expanded search coverage, this part may also appear under:

• 5615082310

• 5615082311

• 6E-W1831LLCS155PX1

• 90x140x82 spherical bearing

• 9014082 bearing

Installation & Verification Checklist

Before installation, confirm:

• 90 mm shaft bore

• 140 mm housing diameter

• 82 mm total width

• 65 mm inner ring width

• Seal or liner configuration

• Lubrication provisions

Dimensional similarity alone does not guarantee correct performance. Construction details must match application requirements.

Why Buy From WQParts

• Dimensions verified against manufacturer bearing catalog specifications (2023)

• OEM supersession cross-check completed

• In-stock inventory avoid extended dealer backorder delays

• Bulk fleet pricing available

• Cross-reference assistance for dimension-based sourcing

• Heavy-equipment application expertise

When suspension components fail, downtime compounds quickly. Maintaining spare inventory for high-load spherical bearings like 561-50-82311 is critical for fleet uptime.