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ROD ENDS

Rod Ends

Comprehensive engineering documentation covering Heim joint anatomy, spherical bearing geometry, thread mechanics, materials, torque/sizing, installation, diagnostics, lubrication, and a component-by-component buyer's guide series.

14 Articles
Johnny Joint

How to Rebuild a Johnny Joint

A step-by-step guide to rebuilding a Johnny Joint at home: tools needed, the full disassembly and reassembly sequence, and what a rebuild kit actually costs.

Johnny Joint

What Are Johnny Joints?

A Johnny Joint is a rebuildable, heavy-duty off-road suspension joint that sits between a rubber bushing and a Heim joint — its construction, materials, and where it's used.

Fundamentals & Definitions

What Is a Spherical Plain Bearing?

A spherical plain bearing accommodates angular misalignment and oscillating motion through a sliding, not rolling, interface. Structure, materials, history, and applications.

Fundamentals & Definitions

Anatomy of a Rod End

A rod end's three components — housing, ball, and race/liner — each use different materials and fail in different ways. What each part does and what to check…

Fundamentals & Definitions

What Is a Heim Joint?

A Heim joint is a spherical plain bearing that connects two parts while allowing controlled rotation and misalignment. What it is, how it's built, and how it's rated.