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Steel guide rollers give bi-fold doors a defined track along the floor or header, so the leaves stay aligned as they move. These guide rollers from Hettich America Corporation are part of the bi-fold door hardware class, so they are built for that specific door movement task, not general sliding applications. The non-adjust design keeps the roller position fixed, which helps maintain consistent tracking once the hardware is set. A plate width of 3/4 inch ties directly to typical bi-fold door edge or frame layouts, helping the roller sit where the door needs support. The 25 lb capacity rating suits lighter bi-fold door installations, where overloading is not part of the job. Working with 3/4 inch thick doors means these rollers match a common door thickness in cabinetry and light interior partitions, supporting predictable clearances around the guide channel.
This guide roller uses steel construction, so the plate, post, and roller body withstand the repeated contact that bi-fold doors see along a guide channel. A 3/4 inch plate width is sized for doors noted at 3/4 inch thick, which helps align the roller in relation to the door edge or stile. Because the part is marked non-adjust, the mounting holes fix its position, giving a repeatable setup when using multiple rollers on similar openings. The 25 lb capacity aligns with lighter bi-fold door leaves, so the hardware works within that load range rather than heavier architectural panels. All plate and post dimensions are defined, so hinge placements, clearances to the guide channel, and surrounding trim can be laid out around these measurements for consistent results across multiple openings.
These bi-fold door hardware components sit within the builders hardware and bi-fold door hardware category, so they are suited to projects using folding door systems rather than standard swinging hinges alone. The 3/4 inch door thickness detail points to use on light interior doors or cabinet-scale openings that share that common material size. When used with guide channels, the 1/2 inch roller diameter and 13/32 inch roller height keep the door running inside the channel profile, guiding the leaf as it opens and stacks. The 2-1/2 inch post height places the roller at a working level relative to the mounting plate, which lets installers coordinate the height of the guide channel on the frame or floor. Because the plate height is only 3/32 inch, these components sit close to the surface, helping keep transitions around flooring or face frames controlled and reducing visual bulk around the bottom or top of the door.
The non-adjust guide roller design means once the mounting plate is fixed, the roller centerline does not shift, which supports repeatable alignment across multiple openings using the same layout. For shops producing several similar bi-fold units, that predictability can streamline drilling patterns and jigs because the 2 inch plate length and 3/4 inch width stay constant. The 5/16 inch post diameter provides a stable axle for the 1/2 inch roller, so the door tracks along the guide channel without excessive wobble under its 25 lb rated load. Steel construction ties all these parts together with a material suited to frequent sliding contact, supporting long-term function in typical woodworking and interior environments. When combined with the defined roller height, plate height, and post height, these measurements let installers and fabricators coordinate hinge positions and clearances around the guide channel so the bi-fold leaves fold, stack, and close in a controlled, repeatable way.
These steel guide rollers are described for 3/4 inch thick doors in bi-fold door hardware applications, so they serve lighter bi-fold door leaves in cabinetry or interior openings using guide channels.
The 25 lb capacity rating means this guide roller is suited to lighter bi-fold door leaves, so loads within that range keep the roller operating within its intended hardware class.
The non-adjust description means the roller position is fixed by the mounting plate, giving a consistent centerline that supports repeatable layouts across multiple similar bi-fold doors.
A plate width of 3/4 inch and length of 2 inches let the guide roller mount along common 3/4 inch thick doors, spreading load and helping align the roller relative to the door edge.
The 1/2 inch roller diameter, 13/32 inch roller height, 5/16 inch post diameter, and 2-1/2 inch post height position the roller correctly inside guide channels, supporting smooth tracking.
These guide rollers are manufactured by Hettich America Corporation as part of its bi-fold door hardware components line, providing a defined part number 50138 for repeat ordering.
The Hettich America Corporation guide roller 50138 provides a steel, non-adjust component with defined dimensions for 3/4 inch thick bi-fold doors up to 25 lb. The measured plate, roller, and post sizes let installers and fabricators plan hinge lines, guide channel positions, and clearances around each opening. For woodworking and building professionals sourcing bi-fold door hardware components through Wurth Baer Supply, these details support consistent layouts and repeatable performance across similar projects.
Sold In: 1 Each
Quantity | Unit Price | Catalog | ||||
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Sold in: 1 Each |  HT1221 Mfr# 50141 | Bi-Fold Door Hardware Components - 3/4" Thick Doors Steel Guide Rollers |