| Concealed Hinge | Electrical enclosures, control cabinets, machine guards, and cleanroom panels | 25–80 kg | Up to 1,200 × 1,800 mm | Up to 50 kg | Sheet steel, stainless steel, aluminum | Flush exterior appearance, restricted access, and protected hinge components | Verify cup depth, mounting clearance, opening angle, and service access before installation |
| Lift-Off Hinge | Removable access panels, equipment housings, and maintenance doors | 30–100 kg | Up to 1,500 × 2,000 mm | Up to 70 kg | Steel, stainless steel, aluminum | Frequent panel removal and fast maintenance access | Use a retaining feature or safety fastener where vibration could lift the door from the hinge pin |
| Weld-On Hinge | Heavy machine doors, industrial cabinets, gates, and welded frames | 80–300 kg | Up to 2,000 × 3,000 mm | Up to 220 kg | Carbon steel, stainless steel | High structural strength and permanent hinge attachment | Allow for welding distortion, corrosion protection, and accurate hinge-axis alignment |
| Adjustable Hinge | Large access doors, sound enclosures, machine covers, and safety guarding | 60–250 kg | Up to 2,000 × 2,500 mm | Up to 180 kg | Steel, stainless steel, aluminum with reinforced mounting points | Doors requiring height, lateral, or compression adjustment after installation | Check adjustment travel, locking method, and the effect of adjustment on the door seal |
| Continuous Piano Hinge | Long cabinet doors, instrument panels, inspection covers, and lightweight guarding | 20–100 kg distributed along the hinge length | Up to 1,500 × 2,000 mm | Up to 70 kg | Sheet metal, aluminum, composite panels | Long narrow doors where load distribution and reduced edge stress are important | Confirm hinge length, pin diameter, mounting-hole spacing, and resistance to torsional deflection |
| Friction Hinge | Display panels, operator interfaces, instrument covers, and positioning doors | 10–60 kg | Up to 900 × 1,200 mm | Up to 35 kg | Aluminum, steel, plastic panels with reinforced inserts | Doors or lids that must remain open at selected angles | Choose the required holding torque; friction capacity decreases with wear and contamination |
| Spring-Loaded Hinge | Safety doors, protective guards, access covers, and self-closing panels | 20–120 kg | Up to 1,200 × 2,000 mm | Up to 80 kg | Steel, stainless steel, aluminum with reinforced brackets | Controlled closing, return action, and improved access protection | Match spring torque to door weight and center of gravity; avoid excessive closing force |
| Heavy-Duty Barrel Hinge | Large industrial doors, machine enclosures, transport equipment, and robust frames | 150–500 kg | Up to 2,500 × 3,500 mm | Up to 350 kg | Carbon steel, stainless steel | High radial loads, outdoor equipment, and doors exposed to shock or vibration | Use adequate hinge spacing and confirm pin wear, lubrication, corrosion protection, and frame stiffness |