200x60x2400 Shaft Mounted Forks

Model 200x60x2400 shaft mounted forks have a single fork weight of 275 kg, making them the longest in this series. The cross-section measures 200 mm wide by 60 mm thick, with an overall length of 2,400 mm. The forks are manufactured using a three‑stage gradient heat treatment process, with hardness decreasing from 340 HBW at the root‑to‑middle section to 280 HBW from the middle to the tip, balancing bending resistance and impact toughness. The axle sleeve is extended to 300 mm; its inner bore is fine‑bored and roller‑burnished, doubling the engagement length with the truck's mounting shaft compared to the standard, effectively suppressing lateral sway under long overhang conditions. Two trapezoidal longitudinal reinforcing ribs are forged on each side of the fork face, with a rib height of 15 mm, increasing the moment of inertia by 35% and limiting the deflection at full load to within 18 mm over the 2,400 mm length.

 

 

The tip leading edge is hard‑faced with a cobalt‑based wear‑resistant alloy and machined into an asymmetrical eagle‑beak shape – the upper beak is smooth to protect the load, while the lower beak is sharp for prying heavy timber pads that are flush with the ground. The end of the axle sleeve is equipped with a double‑nut locking system and an anti‑rotation catch plate; after the nuts are tightened, the plate is inserted and secured with a split pin, completely eliminating loosening due to vibration. The inside of each fork leg features depth‑etched remaining thickness scale lines at 2 mm increments, with the wear limit line filled in red. The surface is coated with a thick‑film epoxy coal tar pitch, with a dry film thickness of 300 µm, resistant to seawater and industrial atmospheric corrosion.

 

 

Each fork undergoes a static deflection test at 1.35 times the rated load and a 2,000‑hour salt spray test before delivery. These forks are compatible with Class 4A shaft mounting systems and must be pushed into place using a hydraulic inserter until the stop. With a single‑fork weight of 275 kg, a balanced hoist or an overhead crane must be used for replacement together with the forged lifting lugs on both sides of the sleeve. They are specifically designed for handling extra‑large wind turbine tower transport frames, precast box girders for sea‑crossing bridges, and the loading/unloading of hundred‑ton heavy pressure vessels.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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