CL233-1 80×68mm Solid Stainless Steel 180° Heavy-Duty Butt Hinge with Magnetic Polishing

1. Full Technical Specifications

• Model Number: CL233-1
• Overall Dimensions: 80mm (L) × 68mm (H) × 12mm overall thickness, plate thickness 8mm
• Maximum Opening Angle: 180°
• Material: Solid Stainless Steel
• Surface Finish: Magnetic polishing (satin brushed metallic appearance, corrosion and rust resistant)
• Pivot Pin Diameter: Φ8mm solid steel pin
• Mounting Holes: 6 pieces of Φ6.3 holes with Φ13×90° countersunk counterbores
• Hole Center Distances: 60mm horizontal, 48mm vertical (5mm edge offset)
• Corner Radius: R10 rounded corners

2. Core Product Features & Advantages

2.1 Full Solid Stainless Steel Construction for Superior Corrosion Resistance

The entire hinge is machined from solid stainless steel, providing excellent resistance to rust, oxidation, moisture, salt spray and weak acid/alkali corrosion. The magnetic polishing treatment creates a uniform satin surface that maintains its appearance over years of service in both indoor workshops and outdoor exposed environments.

2.2 Heavy-Duty Load-Bearing Capacity with Φ8 Thickened Pivot Pin

The Φ8 oversized solid steel central pin, combined with the 8mm thick stainless steel plate and 80×68mm enlarged mounting surface, delivers exceptional load-bearing strength and shear resistance. It reliably supports heavy steel cabinet doors and mechanical panels without bending, sagging or deformation under long-term frequent opening and closing.

2.3 Six Countersunk Holes for Secure Flush Installation

Six standard 90° countersunk mounting holes (Φ6.3 through holes with Φ13 counterbores) allow flat head screws to sink completely into the hinge plate, creating a clean, flush surface with no protruding fasteners. The six-point fixation pattern distributes load evenly and prevents hinge loosening caused by vibration and impact.

2.4 180° Full Flat Opening Angle

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

2.5 Precision Magnetic Polishing for Durable Aesthetic Finish

Magnetic polishing removes surface burrs and micro-imperfections while producing a consistent satin metallic texture. The finish is scratch-resistant, easy to clean and maintains a professional industrial appearance, making it suitable for visible exterior mounting on premium equipment enclosures.

3. Application Fields

1. Heavy electrical control cabinets, 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. Outdoor communication cabinets, energy storage battery boxes, waterproof monitoring enclosures and coastal equipment housings
4. Heavy-duty sheet metal tool cabinets, large instrument test equipment casings and industrial console doors
5. Medical equipment housings, laboratory large analytical instruments and environmental monitoring control boxes
6. Food processing equipment, stainless steel sanitary cabinets and cleanroom facility enclosures

4. Installation & Maintenance Guidelines

Step-by-Step Installation Procedures

1. Mark six drilling positions according to the technical drawing (60mm horizontal × 48mm vertical spacing), drill Φ6.3 through holes and machine 90° countersunk counterbores
2. Align the CL233-1 hinge flat against the cabinet mounting surface
3. Fasten with M6 flat head screws through all six countersunk holes for secure flush fixation
4. Test the 180° opening movement for smooth rotation and verify hinge stability under door load
5. Retighten all screws periodically to prevent loosening from long-term mechanical vibration

Installation Quantity Recommendation

• Door height ≤700mm: Install 2 hinges in symmetrical arrangement
• Door height 700mm to 1200mm or heavy steel door: Install 3 hinges for balanced stress distribution and sag prevention

Maintenance Instructions

1. Suitable for both indoor and outdoor environments, including damp and mildly corrosive conditions; for extreme coastal salt spray or strong chemical environments, regular inspection is recommended
2. Wipe the magnetic polished surface periodically with a soft dry cloth to remove dust, grease and water stains
3. Apply a small amount of stainless steel-compatible dry lubricant to the Φ8 pivot pin every six months to maintain smooth and quiet rotation
4. Inspect mounting screw tightness quarterly, especially on equipment subject to continuous vibration

5. Product Summary

CL233-1 is a heavy-duty 80×68mm solid stainless steel butt hinge featuring magnetic polishing finish, a Φ8 thickened pivot pin and six countersunk flush mounting holes. With its robust load-bearing capacity, excellent corrosion resistance and full 180° opening, it is a reliable and durable standard hardware solution for heavy industrial electrical cabinets, machinery enclosures, outdoor equipment and stainless steel sanitary applications.

CL233-1 stainless steel hinge 80x68mm magnetic polishing 180 degree heavy duty butt hinge 6 countersunk holes industrial cabinet equipment hinge