Sliding Trolley Four Wheel (Pressed Steel)

Key Features

• Four-Wheel Design: The four-wheel configuration distributes the gate's weight evenly. This prevents the trolley from tilting (binding) and ensures the gate stays perfectly level as it moves.
• Swivel/Ball-and-Socket Action: Most 4-wheel trolleys feature a swivel bolt that connects to the gate. This allows the assembly to self-align, compensating for minor imperfections in the track or gate frame.
• Pressed Steel Construction: The body is made of machine-formed steel that is galvanized to prevent rust. Pressed steel is preferred for its balance of high strength and affordability compared to cast or malleable iron.
• Sealed Bearings: The wheels typically contain factory-lubricated ball bearings that require zero maintenance and can handle gate weights ranging from 1,000 to over 2,500 lbs depending on the model.

Primary Uses

• Overhead Slide Gates: The trolley is inserted into an overhead I-beam. The gate is hung from the trolley, allowing it to "glide" through the air without touching the ground. This is ideal for high-traffic industrial entrances.
• Internal Track Cantilever Gates: In "trackless" systems, the four-wheel trolley sits inside a specialized "C-channel" track welded to the gate. It provides the smooth, rolling movement needed to open the gate while keeping all mechanical parts protected from snow, ice, and debris.
• Automated Systems: Because these trolleys use high-quality sealed bearings, they offer very low rolling resistance. This makes them the standard choice for automated gates, as they reduce the strain on the gate motor.