CL237 90° Detachable Male-Female Lift-off Hinge — Zinc Alloy Female & Steel Male with Pin

1. Full Technical Specifications

• Model Number: CL237
• Overall Length: 48mm (female part 25mm, male part width 15mm)
• Maximum Opening Angle: 90°
• Material Composition:
  • Female hinge: Die-cast zinc alloy
  • Male hinge & pin: Steel
• Surface Treatment:
  • Female hinge: Sand spray + nickel plating
  • Male hinge: White zinc plating
• Female Hinge Mounting Holes: 2 pieces Φ3.2, center distance 15mm
• Male Hinge Mounting Holes: 2 pieces Φ4.4, center distance 16.5mm
• Pivot Pin Diameter: Φ4mm
• Installation Dimensions: Door panel thickness 2mm, frame depth 14mm, total height 18mm, width 11.3mm, minimum clearance >4.5mm
• Core Structure: Split detachable male-female lift-off design

2. Core Product Features & Advantages

2.1 Detachable Male-Female Split Structure for Tool-Free Door Removal

The unique separable male-female design allows the entire cabinet door to be lifted off and completely detached in seconds without loosening any screws or using tools. This dramatically improves efficiency during cabinet transportation, on-site assembly, internal wiring inspection, component replacement and routine maintenance work.

2.2 Dual-Material Construction for Optimal Performance

The female half is die-cast from high-strength zinc alloy with sand spray and nickel plating for a smooth, wear-resistant and corrosion-protected surface. The male half and pivot pin are fabricated from solid steel with white zinc plating for robust load-bearing capacity and reliable rust resistance. The combination delivers both structural precision and mechanical durability.

2.3 90° Standard Opening Angle for Conventional Cabinet Doors

The 90-degree maximum opening angle is engineered for standard electrical cabinet and equipment enclosure door swing, providing sufficient access for internal operations while preventing the door from over-rotating and colliding with adjacent equipment or walls.

2.4 Dual Independent Mounting Hole Patterns

The female hinge features 2×Φ3.2 mounting holes with 15mm center spacing, while the male hinge has 2×Φ4.4 holes with 16.5mm center spacing. This independent hole configuration allows flexible alignment on both the door panel and cabinet frame, accommodating various sheet metal thicknesses and installation layouts.

2.5 Compact Size for Space-Constrained Enclosures

With an overall length of only 48mm and a compact installation footprint (11.3mm width, 18mm total height), this hinge is ideal for small and medium-sized equipment enclosures where installation space is limited. It fits neatly on narrow door frames and compact instrument housings without interfering with internal components.

3. Application Fields

1. Small electrical control boxes, PLC enclosures, terminal junction boxes and low-voltage distribution cabinets
2. Laboratory testing instruments, portable measuring devices and analytical equipment housings
3. Communication equipment cabinets, indoor server boxes and signal transfer enclosures
4. Automation equipment protective covers, industrial test fixtures and small actuator housings
5. Medical equipment casings, environmental monitoring devices and electronic instrument panels
6. Sheet metal tool boxes, office equipment enclosures and DIY equipment shells requiring quick door removal

4. Installation & Maintenance Guidelines

Step-by-Step Installation Procedures

1. Determine the installation positions on both the cabinet door panel and the frame according to the dimension drawing
2. On the door panel: mark and drill 2×Φ3.2 holes with 15mm center spacing for the female hinge, then fasten with M3 screws
3. On the cabinet frame: mark and drill 2×Φ4.4 holes with 16.5mm center spacing for the male hinge, then fasten with M4 screws
4. Align the male hinge pin with the female hinge socket, then lower the door panel to engage the two halves
5. Test the 90° opening movement for smooth rotation and verify the lift-off detachment function
6. Confirm that the door panel (2mm) and frame (14mm depth) fit within the specified installation dimensions

Installation Quantity Recommendation

• Door height ≤400mm: Install 2 hinges symmetrically
• Door height 400mm to 700mm: Install 3 hinges for balanced load distribution

Maintenance Instructions

1. Suitable for indoor dry environments; avoid long-term exposure to outdoor rain, high humidity, corrosive gas or salt spray conditions
2. Wipe the nickel-plated and white zinc-plated surfaces periodically with a dry soft cloth to remove dust and moisture
3. Apply a small amount of dry lubricant to the Φ4 pivot pin and male-female engagement area every six months to maintain smooth rotation and easy lift-off
4. Check mounting screw tightness quarterly to prevent loosening from vibration

5. Product Summary

CL237 is a compact 90° detachable male-female lift-off hinge featuring a zinc alloy female half (sand spray + nickel plated) and a steel male half with pin (white zinc plated). Its tool-free door detachment function, dual independent mounting hole patterns and reliable dual-material construction make it an efficient and cost-effective hardware solution for small electrical cabinets, instrument enclosures, communication equipment and various industrial applications requiring frequent door removal for maintenance.

CL237 detachable male female hinge zinc alloy female steel male pin 90 degree sand spray nickel plated white zinc plated lift off cabinet hinge