Description

3AT47 Class 3 Top Carriage Bar

The PRO-Link 3AT47 Class 3 Top Carriage Bar is a precision-manufactured upper carriage rail designed to meet ITA Class 3 dimensional standards, defined by a 20-1/8 inch measurement from the bottom of the lower carriage bar to the top of the upper carriage bar. This vertical spacing is what distinguishes Class 3 from Class 2 systems, which measure 16 inches.

Proper carriage class identification is critical to safe forklift operation. The 3AT47 is specifically built for Class 3 applications and must be paired with matching Class 3 fork blades and lower carriage components.

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True Class 3 ITA Geometry – 20-1/8″ Vertical Spacing

Forklift carriage classification is determined by the vertical distance between rails:

• Class 2: 16″ from bottom of lower bar to top of upper bar

• Class 3: 20-1/8″ from bottom of lower bar to top of upper bar

The 3AT47 is engineered to integrate into a Class 3 carriage assembly that maintains the required 20-1/8″ spacing. This ensures:

• Correct fork hook engagement

• Proper vertical load distribution

• Reduced fork movement under load

• Compliance with ITA mounting standards

Using an incorrectly sized top carriage bar compromises fork retention and can create unsafe operating conditions.

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Secure Fork Hook Engagement

The upper carriage bar supports the top hook of a Class 3 fork blade. When installed with the proper lower rail and maintained spacing, it:

• Stabilizes fork positioning

• Prevents excessive vertical play

• Distributes lifting forces evenly across the carriage

• Minimizes premature hook and rail wear

In high-capacity forklifts, maintaining exact rail geometry is essential for safe performance and rated lifting capability.

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Heavy-Duty Structural Steel Construction

Manufactured from high-strength structural steel, the 3AT47 is built for fabrication, repair, and industrial use. It is designed to withstand:

• Repetitive heavy load cycles

• Shock loading during pallet entry

• Off-center load stress

• Industrial and agricultural environments

The reinforced profile maintains dimensional integrity under load, ensuring long-term durability in demanding material handling operations.

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Ideal for Fabrication and Carriage Repair

The 3AT47 Class 3 Top Carriage Bar is commonly used in:

• Forklift carriage rebuilds

• Custom pallet fork frame fabrication

• Telehandler fork assemblies built to ITA standards

• Agricultural and industrial attachment manufacturing

For fabricators building a Class 3 carriage system, maintaining the 20-1/8″ rail spacing is essential to ensure proper fork compatibility and safe load handling.