CL128-1 White Zinc Plated Steel 90 Degree Detachable Cabinet Hinge

CL128-1 is a professional sheet metal cabinet lift-off hinge made of carbon steel with white zinc electroplating finish. It features a tapered positioning pin for anti-slippage, fixed 90-degree limited opening angle, and quick detachable structure to separate the door from the frame without removing screws. Designed for 3mm thick cabinet frames and door panels, it is widely used in electrical control boxes, server enclosures, outdoor power distribution cabinets, mechanical equipment housings and industrial metal cabinets.

Complete Technical Specifications

• Model No.: CL128-1
• Material: Carbon Steel (Hinge body + pivot pin)
• Surface Treatment: White Zinc Plated (Electro-galvanized)
• Opening Limit Angle: 90° fixed stop
• Mounting Holes: 4 round holes, diameter Φ5.5
• Pivot Shaft Diameter: Φ6
• Core Structure: Lift-off / Detachable Separate Pin Hinge
• Applicable Panel Thickness: Frame t=3mm, Max door depth 20mm, Max inner depth 20mm
• Overall installation width range: 46~56mm

Integrated stamped steel structure ensures high rigidity and strong load capacity for medium-weight cabinet doors. White zinc plating forms a uniform protective coating to resist oxidation, rust and slight splash corrosion in indoor and dry outdoor environments, with cost advantages over stainless steel hinges. The built-in mechanical stopper strictly restricts rotation within 90°, preventing over-swing damage to wiring, components and cabinet surface. The tapered pointed pin automatically aligns the two hinge halves during assembly, simplifying on-site door hanging work and avoiding misalignment. Four symmetric Φ5.5 mounting holes provide stable screw fastening to resist vibration loosening in equipment operation.

Core Competitive Advantages

1. Detachable Lift-off Quick Disassembly Design The split pin structure allows the door to be directly lifted off the cabinet frame without tools or screw removal, greatly facilitating equipment wiring, component replacement, cabinet maintenance and door repair.
2. 90° Fixed Limit Opening Stopper Built-in stop mechanism locks the door at exactly 90 degrees, avoids excessive rotation that pulls internal cables, protects electrical parts and prolongs cabinet service life, a must-have for electrical enclosures.
3. White Zinc Plating Economical Anti-Rust Finish Electro-galvanized white zinc layer delivers reliable rust prevention for dry industrial environments, much lower unit cost than stainless steel hinges, ideal for mass-produced standard cabinets.
4. Tapered Self-Positioning Locating Pin Conical tip guides automatic centering during door installation, reduces assembly difficulty for workshop workers, keeps the door flush and stable after closing.
5. Customized for Standard 3mm Sheet Metal Cabinets Dimensioned strictly for 3mm thick cold-rolled steel cabinet frames, perfectly matches conventional electrical box sheet metal bending sizes, no secondary cutting required.

Main Application Scenarios

1. Low-voltage electrical control cabinets, PLC automation boxes, frequency converter equipment enclosures
2. Server rack side panels, network communication cabinets, industrial computer chassis and instrument boxes
3. Outdoor street light power distribution boxes, photovoltaic combiner boxes and waterproof metal housings
4. Mechanical machine tool protective covers, production line equipment safety enclosures and test bench cabinets
5. Factory workshop storage metal cabinets, tool boxes and industrial dustproof switch boxes

Installation & Selection Notes

1. Fasten with M5 standard machine screws for the 4×Φ5.5 mounting holes to ensure firm locking.
2. White zinc plated steel version is for dry indoor environments; choose stainless steel hinges for coastal, humid or corrosive workshops.
3. Confirm cabinet frame thickness is 3mm before ordering to fit the pre-designed groove dimension.
4. For wide and heavy cabinet doors, install two CL128-1 hinges symmetrically for balanced load bearing.

Product Summary

In short, CL128-1 white zinc plated steel 90° detachable hinge focuses on cost-effective, maintenance-friendly hardware solutions for standard sheet metal electrical cabinets. With lift-off quick split structure, 90° angle limit stopper, self-aligning tapered pin and economical zinc anti-rust coating, it is a mature general-purpose industrial hinge, expanding the CL128 series alongside subsequent derivative models.