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McKinney MKCL250 5x4-1/2 Heavy Weight Cam-Lift Stainless Steel Hinge — Full Mortise
The McKinney MKCL250 is a full mortise, heavy weight cam-lift hinge measuring 5 x 4-1/2 inches, constructed in stainless steel. The defining feature of this hinge is its cammed knuckle design: as the door opens, the cam geometry lifts the door on its pivot axis, raising the door leaf clear of carpet, raised thresholds, or uneven floor surfaces. When the door is released, gravity acting through the same cam profile returns the door toward the closed position — delivering passive, hardware-driven self-closing without a separate door closer. This heavy weight designation indicates the hinge is engineered for demanding, high-cycle commercial and institutional applications where standard weight hardware would be insufficient. Full mortise installation means both the door leaf and the frame leaf are set flush into routed pockets in the door edge and frame respectively, producing a clean, low-profile appearance and a mechanically secure fit.
Institutional Grade Features & Benefits
- Cam-Lift Mechanism: The cammed knuckle raises the door as it swings open, allowing the door bottom to clear carpet, thresholds, and floor obstructions — eliminating drag, scraping, and premature floor finish wear.
- Gravity Self-Closing Action: The same cam profile that lifts the door on opening leverages gravity to return the door toward the closed position, providing self-closing performance without an auxiliary overhead closer.
- Heavy Weight Construction: Rated for heavy duty commercial and institutional door assemblies, this hinge is built to withstand high-frequency use cycles and the stresses of oversized or heavy door slabs.
- Stainless Steel Material: The all-stainless steel construction delivers superior corrosion resistance, making the MKCL250 well-suited for environments where humidity, moisture, or cleaning chemicals are present — including high-traffic corridors, restrooms, and institutional facilities.
- Full Mortise Design: Both leaves are fully mortised into the door edge and frame, providing flush installation, a professional finished appearance, and maximum load-bearing integrity at the hinge joint.
- 5 x 4-1/2 Inch Hinge Size: The 5 x 4-1/2 inch leaf dimensions are standard for heavy commercial doors requiring increased bearing area and load distribution across the hinge knuckle.
- 0.190 In. Leaf Gauge: Steel leaves are 0.190 inches thick — a heavy weight gauge specification per the McKinney full-line catalog — contributing to the hinge's structural rigidity and resistance to deformation under load.
- McKinney Quality: McKinney is a long-established builder's hardware brand with a comprehensive line of commercial hinges engineered to precise tolerances for consistent performance in demanding door openings.
Technical Details
| Feature | Details |
|---|---|
| Brand | McKinney |
| Part Number | MKCL250 |
| Part Type | Hinge — Full Mortise, Cam-Lift, Heavy Weight |
| Hinge Size | 5 x 4-1/2 inches |
| Material / Finish | Stainless Steel |
| Leaf Gauge (Thickness) | 0.190 in. |
| Installation Type | Full Mortise |
| Weight Class | Heavy Weight |
| Mechanism | Cammed knuckle raises door on opening; gravity returns door to closed position |
Documentation
| Door Handing | LH or RH |
| Brand | McKinney |
| General - US Finishes | US32D - Satin Stainless Steel/ 630 |
| Hinge Mounting | Full Mortise |
| Hinge Height | 5.0" Hi |
| Hinge Width | 4.5" Wi |
| Hinge Grade/Thickness | Heavy Wt .180 to .190 |
| Base Material | Stainless Steel |
| Part Type | Hinge, Hinge |
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