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Hinge
CL237-2 180° SUS304 Stainless Steel Detachable Male-Female Lift-off Hinge with Beige Powder Coating
CL238-1 99×40mm SUS304 Stainless Steel 180° Oval Butt Hinge with Precision Grinding Finish
CL238-2 118×40mm SUS304 Stainless Steel 180° Symmetrical Oval Butt Hinge with Precision Grinding Finish
CL238-3 80×40mm SUS304 Stainless Steel 180° Compact Symmetrical Oval Butt Hinge with Precision Grinding Finish
CL244-2 Steel 120° Detachable Concealed Male-Female Hinge with Black Powder Coating & White Zinc Plating
CL246-1 Zinc Alloy 120° Detachable Lift-off Barrel Hinge with Sand Spray Chrome Plating
CL248-1 120° Spring-Loaded Bolt Detachable Hinge — Steel (White Zinc Plated) / SUS304 (Ground Finish)
CL248-1A Steel 120° Spring-Loaded Bolt Detachable Hinge with White Zinc Plating
CL249 180° Lift-off Detachable Butt Hinge — Steel (White Zinc Plated) / SUS304 (Wire Polished), Left & Right Versions
CL250-1 120° Concealed Adjustable Hinge — Steel (White Zinc Plated) / SUS304 (Ground Finish) ### H2 — 1. Full Technical Specifications – Model Numbers: CL250-1 (Steel) / CL250-1B (SUS304) – Overall Dimensions: 80mm total height × 30.5mm width – Maximum Opening Angle: 120° – Material Options: – CL250-1: Carbon steel – CL250-1B: SUS304 stainless steel – Surface Finish: – CL250-1: White zinc plating (rust-proof, wear-resistant) – CL250-1B: Precision grinding (satin metallic, corrosion-resistant) – Pivot Pin Diameter: Φ6mm – Main Body Mounting: 2 pieces Φ6.5 holes, center distance 66mm – Adjustable Mounting Plate: 14.5mm width × 60mm height, slotted holes (12mm length), 42mm hole spacing – Side Profile Dimensions: 26.5mm depth, >33mm clearance, frame thickness 2.5mm, door panel thickness t=3mm, 20mm height, 21mm inner width – Core Features: Concealed hidden installation, slotted plate for positional adjustment ### H2 — 2. Core Product Features & Advantages #### 2.1 Concealed Hidden Installation for Seamless Aesthetic Appearance The hinge is designed to be completely concealed within the cabinet door-frame gap when the door is closed, with no visible hardware on the exterior. This creates a clean, seamless and premium professional appearance, making it ideal for high-end equipment enclosures, visible cabinet installations and applications where aesthetic cleanliness is a key requirement. #### 2.2 Slotted Adjustable Mounting Plate for Precise Door Alignment The innovative slotted mounting plate allows for fine positional adjustment during and after installation, enabling installers to achieve perfect door alignment, consistent gap spacing and smooth operation. This adjustability compensates for minor sheet metal fabrication tolerances and ensures a professional fit even on large or complex cabinet assemblies. #### 2.3 Dual Material Options for Versatile Application Requirements Two material variants are available to match different environmental and budget needs: the CL250-1 carbon steel version with white zinc plating offers cost-effective rust protection for standard indoor industrial applications, while the CL250-1B SUS304 stainless steel version with precision grinding finish delivers superior corrosion resistance, salt spray endurance and a premium satin appearance for outdoor, coastal and harsh-environment installations. #### 2.4 Controlled 120° Opening Angle with Φ6 Pivot Pin The 120-degree maximum opening angle is engineered to provide sufficient access for internal operations while preventing the door from over-rotating and colliding with adjacent equipment, walls or operators. The Φ6 solid steel pivot pin ensures tight assembly clearance, low-friction rotation and high wear resistance for smooth, wobble-free operation over tens of thousands of open-close cycles. #### 2.5 Secure Dual-Point Screw Mounting The main hinge body features 2×Φ6.5 mounting holes with 66mm center spacing for secure screw fixation to the cabinet frame, while the adjustable slotted plate mounts to the door panel. This dual-mounting configuration provides robust and stable installation suitable for medium to heavy cabinet doors, resisting loosening from vibration and mechanical impact. #### 2.6 Compact Profile for Standard Cabinet Configurations With an 80mm height, 30.5mm width and 26.5mm depth profile, this hinge fits neatly within standard cabinet door-frame recesses. The compatibility with t=3mm door panels and 2.5mm frame thickness, along with >33mm internal clearance, covers common sheet metal cabinet configurations. ### H2 — 3. Application Fields 1. High-end electrical control cabinets, premium distribution boxes and PLC equipment housings requiring clean exterior appearance 2. Automation equipment protective doors, industrial test bench casings and machinery access panels 3. Communication equipment cabinets, indoor/outdoor server boxes and signal transfer enclosures (SUS304 version for outdoor) 4. Medical equipment housings, laboratory analytical instruments and environmental monitoring control boxes 5. Food processing equipment, stainless steel sanitary cabinets and cleanroom facility enclosures (SUS304 version) 6. Outdoor monitoring equipment, weather-resistant instrument panels and coastal equipment enclosures (SUS304 version) 7. Premium furniture, electronic equipment casings and decorative enclosures where hidden hinges are preferred 8. Applications requiring precise door alignment and consistent gap spacing ### H2 — 4. 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 2×Φ6.5 holes at 66mm center spacing, then fasten the main hinge body with M6 screws 3. On the door panel: align the adjustable slotted mounting plate and mark the mounting positions, then loosely fasten with screws through the slotted holes 4. Close the door and adjust the position via the slotted plate to achieve perfect alignment and consistent gap spacing 5. Once aligned, fully tighten all mounting screws on the adjustable plate 6. Test the 120° opening movement for smooth rotation and verify door alignment 7. Confirm that the hinge is completely concealed when the door is closed and operates without binding #### Installation Quantity Recommendation – Door height ≤600mm: Install 2 hinges symmetrically – Door height 600mm to 1000mm or medium-weight steel door: Install 3 hinges for balanced load distribution #### Maintenance Instructions 1. Steel version (CL250-1): suitable for indoor dry environments; not recommended for long-term outdoor exposure, high-humidity areas or coastal salt spray 2. SUS304 version (CL250-1B): suitable for both indoor and outdoor environments, including damp, coastal and mildly corrosive conditions 3. Wipe the surface periodically with a soft dry cloth to remove dust, grease and moisture; for SUS304 version, avoid abrasive cleaners that may scratch the ground finish 4. Apply a small amount of dry lubricant to the Φ6 pivot pin every six months to maintain smooth and quiet rotation 5. Check mounting screw tightness quarterly, especially on equipment subject to continuous vibration 6. Re-check door alignment and gap consistency annually; readjust via the slotted plate if necessary 7. Inspect the surface treatment annually for chips or scratches; touch up with matching paint or zinc-rich coating if necessary ### H2 — 5. Product Summary CL250-1 is a 120° concealed adjustable hinge available in carbon steel (white zinc plated) or SUS304 stainless steel (precision ground finish). Its hidden installation design, slotted adjustable mounting plate for precise door alignment, Φ6 pivot pin and dual material options make it a premium and versatile hardware solution for high-end electrical cabinets, automation equipment enclosures, medical instruments, outdoor installations and various industrial applications requiring a clean concealed appearance combined with accurate door fitment.
CL250-2 120° Concealed Adjustable Hinge — Steel (White Zinc Plated) / SUS304 (Ground Finish)
CL250-3 120° Compact Concealed Adjustable Hinge — Steel (White Zinc Plated) / SUS304 (Ground Finish)
