Side Shifter Attachment

Description

Side Shifter Attachment

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A Side Shifter is the most common forklift attachment, designed to move the fork carriage laterally (left and right) without moving the entire vehicle.

This allows for precise load positioning, especially in tight spaces or when loading containers.
Below are the typical specifications for a standard side shifter unit.

Classification by Mounting (ITA/ISO Class)

Side shifters are categorized by their mounting class, which must match the forklift’s carriage height.
ISO/FEM Class Carriage Height Typical Load Capacity Application.

Class II ~407 mm (16″) Up to 2,500 kg Small warehouse forklifts.
Class III ~508 mm (20″) 2,501 – 4,500 kg Medium/Industrial use.
Class IV ~635 mm (25″) 4,501 – 7,000+ kg Heavy-duty/Outdoor use.

Physical & Operational Specs

While models vary by manufacturer (e.g., Cascade, Bolzoni, Meyer), standard ranges include:
Total Stroke (Lateral Movement): Typically $\pm$ 100 mm to $\pm$ 160 mm (total travel of 200–320 mm).
Effective Thickness: Usually 55 mm to 80 mm. This is critical because it moves the load center forward, slightly reducing the forklift’s net lifting capacity.
Weight: Varies from 55 kg (Class II) to over 350 kg (Class IV).
Hydraulic Flow Rate: Usually requires 4–12 Liters per minute (L/min).
Operating Pressure: Standard range is 160 – 250 bar (2,300 to 3,600 psi).

Key Unit Types

Integral Side Shifter: Built directly into the forklift’s carriage by the manufacturer. It offers better visibility and maintains more of the truck’s original lifting capacity.
Hook-on (Hang-on) Side Shifter: An aftermarket attachment that “hooks” onto a standard carriage. It is easier to replace or move to different trucks but adds more “lost load” thickness.

Technical Features to Look For

Upper & Lower Bearings: High-quality units use bronze or specialized “UHMW” polyethylene pads that require less lubrication and are more durable.
Visibility: Modern designs feature a “see-through” frame so the operator can see the fork tips clearly.
Cylinder Design: Double-acting cylinders ensure equal speed and force in both directions.
Note on Safety: Always check the Residual Capacity of your forklift after installing a side shifter. Because the attachment adds weight and pushes the load forward, the original “nameplate” capacity of the forklift will be slightly reduced.
Would you like me to find a specific capacity chart or a manual for a particular brand like Cascade or Sunstrim?