This Triangular Yoke (Small Hole) is specifically engineered for the 38 mm cross dimension (often listed as “38 mm – 1210 cross”) with an outer-lock coupling system in Shaktiman rotavators. According to the parts catalogue, item code UJ-78 corresponds to this part (“Triangular Yoke (Small Hole) 38mm Cross Outer Lock Shaktiman Rotavator”). Scribd+1
Key features & fitment:
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Triangular-profile yoke meaning it matches a triangular type PTO shaft/hub connection rather than round or splined.
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“Small hole” variant indicates the bore/hole size is smaller (instead of the “big hole” variant) — this probably fits a specific mating shaft/hub size.
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Designed for the “outer-lock” system whereby locking/coupling is external, so must match your tractor/rotavator coupling style.
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The 38 mm cross dimension ensures compatibility with the specified Shaktiman rotavator model that uses that cross size.
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Ideal when the existing triangular yoke has wear, enlarged bore, damage, or the connection is loose — replacing with the correct variant ensures rigid coupling and safe torque transmission.
Installation & usage tips:
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Confirm that your existing connection is indeed the 38 mm cross dimension and uses the outer-lock style (not inner-lock or other cross sizes).
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Check whether you need the “small hole” vs “big hole” version — measure the bore/hub inner diameter to ensure correct fitment.
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Inspect the matching shaft/hub for wear, deformation or ovalisation of the hole — if the bore has expanded, choose replacement accordingly.
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During installation: align the triangular coupling precisely, ensure the locking mechanism (outer-lock) is properly engaged, fasteners torqued, lubrication (if applicable) is applied, and no undue play exists.
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A correct fit prevents vibration, misalignment, drivetrain damage and enhances longevity of your PTO/rotavator system.





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