The 4‑hole lower link end (sometimes called a 4‑hole ball end or 4‑bolt lower link end) for Massey / Massey Ferguson tractors is an essential component of the 3‑point hitch system. It mounts at the tip of the lower lift arm and serves as the interface that connects implements (via a ball, swivel, or clevis) to the tractor’s linkage.
Key Features & Role
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Four-Bolt Attachment: The “4‑hole” term indicates that the ball mount or swivel plate is secured to the link end via four bolts. This provides a strong, distributed load path and greater rigidity compared to two‑bolt or simpler ends.
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Ball / Swivel Interface: The end holds a ball or swivel mount (or has provision for one) which connects to the implement’s top bracket or pin. The ball size (diameter) must match the implement’s lug.
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Material & Strength: Typically manufactured from high strength steel, often heat treated or hardened on the bearing surfaces, to handle bending, shear, and cyclic loads.
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Dimensional Precision: The bolt hole spacing, bolt diameter, plate thickness, alignment, and ball bore must match the original specifications to avoid misalignment, play, or accelerated wear.
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Load Transmission: It transmits vertical, lateral, and torque loads from implement to the lift arm, so quality of fit and rigidity are crucial.
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OEM / Replacement Compatibility: Many Massey tractors use standard ball ends (e.g. 886429M1) which can fit via standard 4‑bolt patterns in the lower link ends.
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Maintenance & Wear: Over time, bolt holes may wear, edges may crack, or ball surfaces may erode. Regular inspection and torque checking of the bolts is necessary. Replace the end when wear exceeds tolerances.
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