CL253-3 60×90mm SUS304 Stainless Steel 180° Mirror Polished Heavy-Duty Adjustable Butt Hinge

Full Technical Specifications

• Model Number: CL253-3
• Overall Dimensions: 60mm total width (19mm + 19mm leaves + barrel) × 90mm height × 3mm leaf thickness
• Maximum Opening Angle: 180°
• Material: SUS304 stainless steel
• Surface Finish: Mirror polishing (highly reflective polished finish, corrosion-resistant, premium appearance)
• Pivot Pin Diameter: Φ6mm
• Mounting Holes:
  • Adjustable leaf: 3 slotted holes, 12mm length × 7mm width, 35mm vertical spacing
  • Fixed leaf: 3 pieces Φ7 round holes, 35mm vertical spacing
• Hole Center Distances: 35mm + 35mm vertical spacing, 19mm + 19mm horizontal spacing
• Side Profile: 3mm leaf thickness
• Core Features: Heavy-duty 3mm thickness, full SUS304 corrosion resistance, mirror polished aesthetic, adjustable slotted mounting holes, Φ6 thickened pivot pin, 180° full opening

Core Product Features & Advantages

1 Premium SUS304 Stainless Steel with 3mm Heavy-Duty Thickness

The entire hinge is fabricated from SUS304 stainless steel with a substantial 3mm leaf thickness, providing excellent corrosion resistance, structural rigidity, impact resistance and heavy load-bearing capacity. Suitable for both indoor and outdoor environments, including damp, coastal and mildly corrosive conditions, it maintains reliable performance over years of service without rusting, bending or deforming.

2 Mirror Polished Finish for High-End Aesthetic Appearance

The precision mirror polishing creates a highly reflective, sleek metallic surface that elevates the visual quality of any equipment enclosure. In addition to its premium appearance, the polished surface resists fingerprints, is easy to clean and provides an extra layer of corrosion protection, making it ideal for medical, laboratory and cleanroom applications where hygiene and appearance are critical.

3 Adjustable Slotted Mounting Holes for Precise Door Alignment

One leaf features 3 elongated slotted holes (12mm length), allowing installers to fine-tune the hinge position vertically during and after installation. This adjustability compensates for minor sheet metal fabrication tolerances, enables perfect door alignment and consistent gap spacing, and ensures a professional fit even on large or complex cabinet assemblies. The other leaf with 3×Φ7 round holes provides secure fixed mounting.

4 Φ6 Thickened Pivot Pin for Heavy Load Support

The Φ6 oversized pivot pin provides exceptional load-bearing strength and rotational durability, reliably supporting heavy cabinet doors without bending, sagging or wobbling under long-term frequent opening and closing. The precision-machined barrel and pin assembly ensures tight clearance, low-friction rotation and smooth, quiet operation over tens of thousands of open-close cycles.

5 180° Full Flat Opening Angle

The 180-degree maximum opening angle enables the cabinet door to lay completely flat, eliminating operational blind zones and providing full unobstructed access for internal wiring, component replacement, equipment inspection and routine maintenance work.

6 Oversized 60×90mm Plate with Six-Point Mounting

The oversized 60×90mm mounting plate provides a broad surface for maximum load distribution, while the combination of 3 slotted holes and 3 round holes (6 total mounting points) with 35mm vertical spacing ensures secure and stable installation on heavy cabinet doors, effectively resisting sagging and deformation under long-term use.

Application Fields

1. Heavy electrical control cabinets, large low-voltage distribution boxes, frequency converter enclosures and PLC equipment housings
2. CNC machine tool safety guards, automation equipment protective doors and industrial machinery access panels
3. Medical equipment housings, large laboratory analytical instruments and environmental monitoring control boxes
4. Outdoor communication cabinets, energy storage battery boxes and waterproof monitoring equipment enclosures
5. Food processing equipment, stainless steel sanitary cabinets and cleanroom facility enclosures
6. Heavy-duty sheet metal tool cabinets, large instrument test equipment casings and industrial console doors
7. Marine and boat equipment, offshore fixtures and coastal installations requiring corrosion-resistant stainless steel hardware
8. Premium furniture, electronic equipment casings and decorative enclosures where polished appearance is preferred
9. Applications requiring heavy load support, adjustable door alignment and consistent gap spacing

Installation & Maintenance Guidelines

Step-by-Step Installation Procedures

1. Determine the installation positions on both the cabinet frame and door panel according to the dimension drawing
2. On the cabinet frame: mark and drill 3×Φ7 through holes at 35mm vertical spacing for the fixed leaf with round holes
3. On the door panel: mark and drill 3 holes corresponding to the slotted holes at 35mm vertical spacing
4. Align the fixed leaf against the cabinet frame and fasten with M6 screws through all 3 round holes
5. Align the adjustable leaf against the door panel and loosely fasten with screws through the slotted holes
6. Close the door and adjust the vertical position via the slotted holes to achieve perfect alignment and consistent gap spacing
7. Once aligned, fully tighten all mounting screws on the adjustable leaf
8. Test the 180° opening movement for smooth rotation and verify hinge stability under heavy door load

Installation Quantity Recommendation

• Door height ≤700mm: Install 2 hinges symmetrically
• Door height 700mm to 1200mm or heavy steel door: Install 3 hinges for balanced load distribution and sag prevention

Maintenance Instructions

1. Suitable for both indoor and outdoor environments, including damp, coastal and mildly corrosive conditions; for extreme salt spray or strong chemical environments, regular rinsing with fresh water is recommended
2. Wipe the mirror polished surface periodically with a soft dry or slightly damp microfiber cloth to remove dust, fingerprints and grease; avoid abrasive cleaners or scouring pads that may scratch the mirror finish
3. Apply a small amount of dry lubricant to the Φ6 pivot pin every six months to maintain smooth and quiet rotation
4. Check mounting screw tightness quarterly to prevent loosening from vibration
5. Re-check door alignment and gap consistency annually; readjust via the slotted holes if necessary
6. Inspect the polished surface annually for scratches or corrosion; for coastal applications, rinse with fresh water periodically to remove salt deposits

Product Summary

CL253-3 is a heavy-duty 60×90mm adjustable butt hinge with 3mm leaf thickness, manufactured from premium SUS304 stainless steel with precision mirror polishing. Its full stainless steel corrosion resistance, highly reflective polished finish, robust 3mm construction, Φ6 thickened pivot pin, innovative slotted-hole adjustable mounting design and 180° full opening angle make it an ideal hardware solution for heavy electrical cabinets, machinery enclosures, medical equipment, outdoor installations and various industrial applications requiring durable heavy-load performance, a premium polished appearance and precise adjustable door alignment.

CL253-3 SUS304 stainless steel mirror polished heavy duty adjustable butt hinge 180 degree slotted holes 3-Φ7 mounting 60x90mm Φ6 pin industrial cabinet equipment hinge