The mast is the system in a forklift that performs load lifting. This common type of standard forklift mast employs an arrangement of a stationary outer rail and a sliding inner rail with chains to lift a carriage and forks. The maximum extension of the inner rails will limit the height of load lifting. Duplex Mast This mast is the optimal choice when loads need to be double-stacked and the lift truck will not be placing such loads into high racking. Material handling application examples include freight cross-docking and manufacturing component delivery operations.
This type of mast has a hydraulic cylinder located in the center of the mast assembly that helps push loads upwards, enabling the load to rise while the mast itself remains stationary. Once the carriage reaches the top of the inner rails, two supporting side rails complete the lifting process.
Triplex Mast These widely used masts have become the most popular recently. They enable loading and unloading at higher elevations than duplex masts. A Triplex mast differs from the Duplex because it includes two sliding rails plus a single stationary rail: it is often found on a reach truck as it can extend a load further to reach greater distances.
A large hydraulic ram in the center of the mast assembly performs most of the lifting of the forks and carriage. Also known as QFV, a four stage mast has four sets of rails that raise the load. A quad will generally have a primary lift cylinder so it will have full free lift as well. It will have the same free lift as duplex or triplex mast but extends further. Can load and unload higher-tiered stacks than the duplex or triplex, but requires increased caution due to its high lifting heights.
One would think the only important aspect of a forklift mast is how high it can lift. However, the lowered height is sometimes just as crucial as the maximum lift height. If your application requires you to take a load through a door or your facility has any overhead restrictions, the down height is very important. Can you make it through all your doors? Full free lift can make that difference when loading and unloading trucks on a dock, in a container, etc….
Keep in mind your capacity as well. And upward. This could be the most common type. It is made up of 3 sections that stretch the forks.
Is really a cylinder, referred to. This will improve the brakes and carriage near the surface of the mast prior to the segments staging up. Lift elevation for a stage mast for a forklift with base capacity from 2, lbs. To 6, pounds. Will have " of lifting and certainly will likely be approximately " Overall Height LoweredL. Recommended Uses: To load and load higher-than simplex or duplex or when a full free elevator is necessary and duplex masts are not offered. Four stage mast has four collections of railings which raise forces.
A quad will have a lift cylinder therefore that it may have a full lift. Lowered Height or Collapsed Height: This is the distance from from the floor to the top of the mast when the mast is lowered.
If your forklift needs to travel beneath a garage or container door, the lowered height may be important. Extended Height: This measures the height from the top of the mast or load backrest with the mast fully extended. Single Stage - A single stage mast has only one channel, and therefore a limited lifting height.
Single stage masts have zero freelift and are best for outdoor applications or environments where overhead clearance is not an issue. The outer stage does not move and gives the option for freelift. The inner mast section raises up to elevate the carriage and forks.
A two stage mast offers great visibility and is ideal for moving loads in trailers. The outer rails allow for free lift, and the two inner sections can lift loads higher than a two stage.
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