Bottom Mounted Sliding Doors

Cronax Industrial Bottom Mounted Sliding Doors are designed for large openings, heavy-duty applications, and environments where top support is not feasible. Unlike top-hung models, these doors are guided by robust bottom tracks and rollers, making them ideal for wide-span industrial facilities such as warehouses, logistics hubs, aircraft hangars, and manufacturing plants. Built from high-strength steel or aluminium panels, they ensure exceptional durability, weather resistance, and security.

Bottom-mounted design allows for stable operation even in structures with limited overhead support, while precision-engineered rollers guarantee smooth, reliable, and low-noise movement. Available in manual or motorized versions, Cronax Bottom Mounted Sliding Doors can be customized with insulation, vision panels, or automation systems for added efficiency. Their rugged construction and ease of use make them a practical, long-lasting solution for demanding industrial environments.

ENGINEERING HIGHLIGHTS
SMART CONTROL SYSTEM
CUSTOMIZATION OPTIONS

Door Type	Heavy-duty bottom-mounted industrial sliding door supported by robust bottom rollers, ideal for environments with limited overhead load capacity.
Primary Application	Manufacturing facilities, cold-storage logistics, tunnel entries, and retrofitted openings where top structure cannot bear door weight.
Maximum Clear Opening	Up to 10,000 mm wide × 6,000 mm high as a single leaf; bi-parting systems available for up to 20,000 mm span.
Panel Construction	Insulated sandwich panels (80 mm–150 mm) with PU or rock-wool cores, and durable steel or cladded PEB exterior.
Rolling Mechanism	Adjustable, lubricated bottom rollers with galvanized or nylon wheels guiding doors along reinforced floor track; concealed stay rollers ensure lateral control.
Structural Framework	Steel C-channel bottom rail and robust upper guide brackets ensure stability and structural integrity during sliding.
Operating Speed	Horizontal sliding at speeds up to 0.16 m/s (higher speeds available on request).
Sealing System	Brush seals along side jambs, bottom brush/EPDM seals, and neoprene or rubber seals at stops—maximizes dust, air, and thermal sealing.
Compliance & Standards	CE-certified drive units and compliances with EN 13241-1 and Machineries directives for industrial safety.

Drive System	Rack-driven heavy-duty motor unit with built-in electronic control; optionally chain-driven or fully manual sliding operation.
Power Supply	230 V single-phase or 415 V three-phase options, depending on door weight and automation level.
Control Panel	Microprocessor-based operator with soft start/stop, integrated magnetic limit switches, and emergency stop functionality.
User Controls	Standard Open/Stop/Close push buttons; optional key selector or wireless remote included.
Safety Systems	In-built photocells, flashing lights, and safety edge interlocking for secure operation.
Positioning	Magnetic or encoder-based limits ensure accurate and repeatable panel placement.
Emergency & Backup	Manual hand-chain override for power outages; ability to integrate UPS backup system for critical use.
Integration	Can link with building management systems (BMS), dock mechanisms, and alarms for streamlined operations.

Panel Finish	0.5 mm PPGL/PPGI or MS/GI/SS skin available in multiple textures and finishes; embossed steel cladding also offered.
Optional Cladding	PUF or rockwool panel cores with pre-painted finishes, available in RAL shades; anti-scratch embossed surface available.
Vision Panels	Optional glazed inserts or window sections for visibility and light provision.
Sealing Packages	Enhanced bottom brush seals and side gaskets available for improved insulation and dust barrier.
Branding	Panels can be custom painted or marked with logos or safety outlines.
Accessories	Optional safety photocells, warning lights, docks, wicket-inset doors, and crane rail interlocks available.