HL-A26 Heavy-Duty Large-Wheel Single Roller Assembly

The HL-A26 is a heavy-duty single-roller assembly engineered for high-mass aluminum sliding doors and large-format window sashes. Featuring an oversized Ø38 mm steel wheel housed within a reinforced 40 mm carbon steel box chassis, the HL-A26 delivers superior rolling dynamics, reducing startup traction and providing effortlessly smooth operation across sliding tracks.

Designed to accommodate deeper profile cavities, this model combines high load-bearing structural integrity with an extended ±4.5 mm vertical adjustment range, allowing installers to compensate for heavy glass sag and alignment variations on-site.

Key Features

• Oversized Ø38 mm Single Wheel: The expanded wheel diameter minimizes initial friction and distributes load evenly, bridging track imperfections and rail joints with minimal wear and rolling resistance.
• Extended ±4.5 mm Vertical Calibration: Heavy-duty internal screw mechanism permits smooth post-installation sash leveling to correct frame tilt and maintain continuous weather-tight sealing.
• Reinforced High-Profile Chassis (40 mm Height): Built with a rigid 22 mm wide carbon steel box body, engineered specifically for high-capacity door stiles and deep aluminum extrusion pockets.
• Protective Color Zinc Passivation: Electro-galvanized color zinc plating acts as a defensive shield against moisture, oxidation, and coastal atmospheric salinity.
• Engineered Track Geometry: Machined with an R3.2 mm groove radius and an 8.0 mm channel width, ensuring anti-derailment tracking on standard commercial sliding rails.

Technical Specifications