CL128-3 White Zinc Plated Steel Lift-off Hinge (Short & Long Pin Version)

CL128-3 & CL128-3A White Zinc Plated Steel Short/Long Pin Detachable Lift-off Hinges

CL128-3 series are vertical split lift-off removable hinges belonging to CL128 cabinet hinge family, manufactured by stamping carbon steel with white zinc plated anti-corrosion surface. It is divided into two models according to pin length: CL128-3 (Short Pin, Part No.6110-1145) and CL128-3A (Long Pin, Part No.6110-1245). Equipped with Φ5 thickened pivot shaft and multiple specification mounting holes, it supports 360° free rotation and quick door detachment without tools, widely applied in electrical control boxes, network cabinets, mechanical equipment casings and various sheet metal industrial enclosures.

Complete Technical Specifications

• Main Model: CL128-3 (Short Pin) / CL128-3A (Long Pin)
• Material: Carbon Steel (Hinge Body + Integral Pivot Pin)
• Surface Treatment: White Zinc Electroplated Plating
• Pivot Shaft Diameter: Φ5
• Mounting Holes: Φ3.3 small holes + Φ5 large holes for flexible screw matching
• Structure Type: Vertical Lift-off / Detachable Split Hinge
• Core Difference: Only the length of the separable pin differs, all mounting outline dimensions are identical

Adopting one-piece bending stamping process, the hinge body features high structural rigidity and strong anti-deformation ability, stable for long-term frequent opening and closing of medium-weight cabinet doors. White zinc plating forms a compact protective layer to resist oxidation and rust in indoor dry workshops, with obvious cost advantages over stainless steel hinges for mass production. The Φ5 thickened central pin greatly improves shear strength and load capacity, effectively avoiding shaft bending, jamming or loose shaking under vibration and heavy load. The two pin-length versions solve different on-site assembly requirements: short pin for standard flush installation, long pin for deeper insertion, higher locking stability and anti-drop performance. Multi-caliber reserved mounting holes allow flexible selection of M3 and M5 screws to adapt different cabinet plate thicknesses and installation fixtures.

Core Competitive Advantages

1. Two Pin Length Options for Differentiated Installation CL128-3 short pin for conventional flat mounting; CL128-3A extended long pin for deeper insertion, stronger anti-disengagement, ideal for vibrating equipment and frequently disassembled doors.
2. Tool-Free Lift-off Quick Disassembly Design Separate upper and lower halves completely, lift the cabinet door straight upward to remove it directly, convenient for internal wiring, component maintenance, cabinet overhaul and batch production assembly.
3. Φ5 Reinforced Pivot Shaft for Heavy Load Thickened main pin enhances overall bearing limit, runs smoothly without abnormal noise, durable for thousands of cycles of rotation.
4. Multi-Spec Mounting Holes for Strong Compatibility Dual hole diameters (Φ3.3 & Φ5) support M3/M5 standard screws, compatible with cold-rolled steel sheets, aluminum plates and different bending frame structures.
5. Economical White Zinc Anti-Rust Coating Cost-effective electro-galvanized finish meets anti-corrosion demands of most indoor industrial environments, reduces total hardware procurement expenditure for cabinet manufacturers.

Main Application Scenarios

1. Low-voltage electrical control cabinets, inverter boxes, PLC automation equipment enclosures
2. Server racks, communication network cabinets, industrial computer chassis and instrument test boxes
3. Outdoor distribution boxes, junction boxes, small photovoltaic waterproof metal housings
4. CNC machine tool safety protective covers, production line automation equipment casings
5. Factory workshop tool cabinets, dustproof storage boxes and engineering mechanical equipment shells

Installation & Selection Guidelines

1. Choose CL128-3 short pin for static standard cabinets; select CL128-3A long pin for equipment with vibration, bump risk or frequent door disassembly.
2. Match Φ3.3 holes with M3 screws and Φ5 holes with M5 screws for tight fastening; install two hinges symmetrically for wide and heavy door panels.
3. White zinc plated carbon steel version cannot be used in coastal salt fog, high humidity and strong corrosive surroundings, switch to stainless steel hinges for harsh environments.
4. Confirm reserved mounting position space before bulk order, both models share the same outline size, only the protruding pin length varies.

Product Summary

In conclusion, CL128-3/CL128-3A short & long pin lift-off hinges enrich the CL128 series product matrix together with CL128-1 (90° limited angle) and CL128-2 (wide span free rotation). Centered on detachable quick disassembly and flexible installation, this dual-pin variant provides economical, high-strength standard hinge solutions for general industrial sheet metal cabinets and electrical enclosures.