McKinney MKCL180 5x4-1/2 Heavy Weight Cam-Lift Stainless Steel Hinge | Full Mortise

The McKinney MKCL180 is a full mortise, heavy weight cam-lift hinge designed for demanding door applications where reliable, gravity-assisted self-closing and threshold clearance are required. The defining feature of this hinge is its cammed knuckle geometry: as the door opens, the cam action lifts the door leaf slightly, allowing the door to swing clear of carpet, raised thresholds, or floor-level obstructions. When released, the door self-closes under gravity — no spring mechanism required. Manufactured by McKinney, a trusted name in commercial and institutional door hardware, the MKCL180 is built to full mortise installation standards and sized at 5 x 4-1/2 inches for heavy-duty door and frame combinations. The stainless steel construction delivers exceptional corrosion resistance and long-term durability in high-traffic or moisture-prone environments.

Institutional Grade Features & Benefits

• Cam-Lift Mechanism: The cammed knuckle raises the door as it opens, enabling the door to swing clear of carpet, thresholds, and floor obstructions without manual adjustment.
• Gravity Self-Closing: Once released, the cam-lift geometry allows the door to self-close by gravity alone, eliminating the need for a separate closing spring while maintaining consistent, reliable closure.
• Heavy Weight Construction: At 0.190 in. steel leaf thickness, the MKCL180 is built to handle heavy door assemblies, resisting flex, wear, and deformation under sustained use.
• Full Mortise Design: Both hinge leaves mortise fully into the door edge and frame, producing a flush, professional installation with maximum strength and minimal projection.
• Stainless Steel Material: Stainless steel construction provides superior resistance to corrosion, tarnishing, and surface degradation — ideal for high-humidity, exterior-adjacent, or institutional settings.
• 5 x 4-1/2 Inch Leaf Size: The generous leaf dimensions distribute load across a wider bearing surface, supporting heavy door slabs and reducing stress at the frame mortise.
• McKinney Quality: Engineered and manufactured to McKinney full-line catalog specifications, ensuring dimensional accuracy, consistent cam geometry, and long service life.

Applications

The MKCL180 cam-lift hinge is well suited for full mortise door installations where the door must clear carpet, raised thresholds, or uneven flooring, and where a self-closing function is needed without a separate door closer or spring hinge. Heavy-weight leaf thickness makes it appropriate for substantial door slabs in commercial and institutional construction.

Technical Details