19694‑20‑S input shaft also known as first shaft / main drive shaft, is core power transmission component for Fast gearbox. It transmits engine power to gearbox internal gear groups, completes power input and speed shifting function, widely applied on mobile crane and heavy‑duty truck.
Product Features
Made of high‑strength alloy steel with precision gear grinding and heat‑treatment process. Excellent wear‑resistant and impact‑resistant performance. Complete splines and gear teeth, dimensional consistency, direct OEM replacement for old damaged input shaft. Stable load‑bearing capacity under heavy‑load working condition.
Application Notes
Part No:19694‑20‑S. Suitable for Fast gearbox, compatible with Sany crane and heavy truck. Please confirm gearbox model and part number before purchase to prevent installation mismatch.