CL231-2 60mm Zinc Alloy 180° Detachable Lift-off Split Hinge with Bright Chrome Plating

1. Full Technical Specifications

• Model Number: CL231-2
• Overall Length: 60mm, Center Distance of Mounting Holes: 48mm
• Overall Height: 19mm, Width: 13mm
• Maximum Opening Angle: 180°
• Material: Die-cast Zinc Alloy Housing + Φ5 Nickel-Plated Solid Steel Rotating Pin
• Surface Treatment: Bright chrome plating on hinge body; nickel plating on pivot pin for rust-proof and wear-resistant performance
• Mounting Holes: 4 pieces of Φ4.5 holes with Φ9.5×90° countersunk counterbore
• Core Structure: Separable split lift-off pin, fully detachable door design

2. Core Product Features & Advantages

2.1 High-Rigidity Zinc Alloy Die Casting with Premium Chrome Coating

One-piece high-pressure zinc alloy die casting ensures stable structural rigidity and reliable load-bearing capacity. Bright chrome electroplating forms a compact protective film that effectively prevents indoor oxidation, fingerprint marks and surface abrasion, presenting a clean and premium metallic look on equipment casings.

2.2 Detachable Lift-off Structure Boosts Maintenance Efficiency

The separable hinge pin allows the cabinet door to be entirely lifted off in one step without dismantling the hinge base. It significantly improves productivity during bulk cabinet delivery, field installation, internal wiring troubleshooting and spare parts replacement, reducing overall after-sales labor costs.

2.3 Φ5 Nickel-Plated Solid Steel Pin for Long-Lasting Rotation

The nickel-plated solid steel pivot pin enhances corrosion resistance and friction durability. Precisely controlled assembly clearance maintains steady wobble-free rotation over tens of thousands of open-close cycles, effectively avoiding common defects such as door sagging and hinge loose play.

2.4 Countersunk Holes for Flush Hidden Mounting

Four standard 90° stepped counterbores fully sink M4.5 flat head screws inside the hinge plate. No protruding fasteners on the cabinet exterior create a streamlined appearance, while eliminating risks of screw scratching and accidental impact damage.

2.5 180° Full Flat Opening Stroke

The 180-degree maximum outward rotation angle enables the door to lie flat against the cabinet side panel, removing operational blind zones and facilitating internal wiring, component picking and in-depth equipment overhaul.

3. Application Fields

1. Mini electrical junction boxes, compact PLC controllers, sensor housings and low-voltage terminal cabinets
2. Portable laboratory measuring instruments, miniature medical diagnostic devices and analytical equipment enclosures
3. Small aluminum profile frames, automation equipment safety guards and industrial test fixtures
4. Indoor communication equipment cabinets, office electronic enclosures and lightweight sheet metal control boxes
5. Small mechanical equipment maintenance access hatches and instrument panel flip doors

4. Installation & Maintenance Guidelines

Step-by-Step Installation Procedures

1. Mark drilling positions strictly according to the technical drawing, drill Φ4.5 through holes and machine 90° countersunk counterbores
2. Press the CL231-2 hinge tightly against the cabinet mounting surface
3. Secure the hinge with M4.5 flat head screws to finish flush hidden fixation
4. Mount the door panel onto the pivot pin, test the 180° opening movement and complete lift-off detachment function
5. Retighten all mounting screws periodically to prevent loosening caused by long-term mechanical vibration

Installation Quantity Recommendation

• Door height ≤450mm: Install 2 hinges in symmetrical arrangement
• Door height 450mm to 800mm: Install 3 hinges for balanced stress distribution

Maintenance Instructions

1. This hinge is designed exclusively for dry indoor environments. Do not apply it outdoors, in high-humidity areas, corrosive gas surroundings or salt spray conditions
2. Wipe the chrome-plated outer surface regularly with a dry cloth to clear accumulated dust and fingerprint residues
3. Apply a small amount of dry lubricant to the steel rotating pin every six months to sustain quiet and smooth operation

5. Product Summary

CL231-2 is a compact 60mm zinc alloy 180° lift-off removable split hinge finished with bright chrome plating and a wear-resistant nickel-plated steel pivot pin. Equipped with a fully detachable door structure and countersunk flush mounting design, it is a cost-effective standard industrial hardware widely applied to small control cabinets, precision testing instruments and light-duty industrial equipment access doors.

CL231-2 zinc alloy lift off hinge 60mm bright chrome plated 180 degree removable split hinge 90 degree countersunk hole cabinet hinge nickel plated steel pin