This half PTO (power take‑off) assembly is designed specifically for the rotavator end of the Shaktiman machine that uses a 38 mm cross section shaft and an outer‑lock style coupling. According to the parts catalogue, item code UJ‑83 is listed as “HALF PTO ASSY. SHEARING BOLT TYPE WITH COVER 38MM CROSS OUTER LOCK ROTAVATOR END SHAKTIMAN ROTAVATOR.”
Key details & functionality:
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Shearing‑bolt type: The assembly incorporates a shear bolt mechanism which acts as a safety/failure mode — in the event of an overload or obstruction, the bolt shears off to protect more expensive drivetrain components.
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With cover: Comes with a protective cover/guard which shields the PTO and coupling area from debris, enhances safety and prolongs life of moving parts.
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38 mm cross section: Fits the standardized 38 mm (1210 cross) shaft size used on many Shaktiman rotavator models under the outer‑lock coupling design.
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Outer lock: Indicates the coupling uses an external locking mechanism rather than an inner bore lock — important for correct fitment.
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Rotavator end: This assembly is intended for the implement side (rotavator end) rather than the tractor side.
Installation & Usage Notes:
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Confirm your existing rotavator’s PTO shaft/cross section: It must be 38 mm and use outer‑lock; mismatched size or lock type will cause poor fit or malfunction.
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Inspect the mating shaft, coupling hub, splines and guard cover area for wear or damage; replacing the PTO assembly with this unit ensures correct alignment and protector cover.
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During installation, ensure the cover is properly fitted, bolts torqued correctly, and the shear bolt mechanism is intact and accessible for future inspection.
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After installation, test the assembly at low load to check for vibration, play or unexpected noise — these may signal incorrect fitment or damage in the driveline.
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Keep a spare shear bolt on hand: since this is a sacrificial safety element, if it shears off it will need replacement to restore full PTO functionality.





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