Moving Machinery in Freight Elevators
& to Upper Floors
Direct Answer: How do you safely transport heavy machinery using a freight elevator?
An elevator machinery move must simultaneously pass three strict limits: total rated capacity, car floor point-loading structural thresholds, and door header clearance height. Traditional 4″ to 6″ wheeled rigger skates often fail this checklist by cracking elevator platforms and lifting tall machines straight into top door frames. Nonmetallic Machinery Sliders™ utilize a flat, non-point loading footprint to spread weights evenly while maintaining an ultra low-profile (3/8″ to 1″ ride height) to pass all three building tests safely.
The Elevator Sets the Rules
Three Structural Limits, Not One:
Transporting heavy manufacturing gear to upper floors via a freight elevator requires meeting three physical parameters at the exact same time:
- Gross Rated Capacity: The combined weight of the machine, all rigging hardware, and the moving crew cannot exceed the elevator’s maximum lifting threshold.
- Car Floor Loading: The platform structure must withstand the localized downward pressure applied by your transport gear.
- Door Opening Height: Just like a cargo container, an elevator’s entry door frame is shorter than its interior ceiling height.
Mounting a tall machine onto standard machine moving skates or heavy dollies adds 4 to 6 inches of height. Consequently, an asset that technically fits inside the elevator cab will slam into the outer door frame during loading. Furthermore, narrow steel roller wheels concentrate multi-ton weights onto tiny linear paths, threatening to punch straight through or warp the car’s structural subfloor.
- Class A (General Freight Loading, no forklifts permitted): Designed for distributed loads where no single piece exceeds a quarter of the car’s capacity. Hand trucks or manual jacks are allowed, but heavy industrial forklifts are strictly forbidden from driving over the threshold.
- Class B (Motor Vehicle Loading, transport only): Engineered specifically to transport automobiles or trucks within their weight rating.
- Class C (Industrial Truck Loading, forklifts allowed): Built to withstand the intense, concentrated wheel point-loads of a forklift driving directly into the car to drop off heavy machinery.
Why Machinery Sliders™ Fit Elevator Work
Bridging the Threshold Gap:
The gap and sill plate transition between the building’s main floor and the elevator car is a classic rigging hazard. When a small, heavily loaded skate wheel hits this narrow gap, it can drop inside, locking up the move and trapping a multi-ton machine half-in and half-out of the elevator shaft.
Because Machinery Sliders™ feature a wide, flat bottom with no wheels, they bridge small threshold gaps like a solid transition plate. For larger floor gaps where building managers mandate a rated bridging plate, sliders glide over the metal ramp lips smoothly without getting trapped.
Protecting Sensitive Upper-Floor Corridors:
Once the elevator reaches the target level, the upper-floor travel path typically consists of finished commercial surfaces like tile, linoleum, hardwood, or high-gloss architectural concrete. Heavy steel wheels leave permanent tracking marks or crack brittle tile under pressure.
Sliders distribute weight across a wide footprint, shielding fragile corridors from point-load damage. For tight layout maneuvers, switching to round multi-directional sliders grants complete 360-degree lateral “crabbing” control, letting your crew guide the asset through tight hallway corners and onto its precise mounting pad. Review our floors and truck surfaces guide for comprehensive track material data.
Verify Before You Ride
The Pre-Move Verification Checklist:
To ensure execution without safety violations or building property damage claims, complete this field checklist prior to loading day:
- Confirm Car Weight Capacity: Audit the gross weight of the machine, timbers, toe jacks, sliders, and personnel against the elevator’s certified limit.
- Verify ASME Loading Class: Ensure your material handling method matches the building’s Class A, B, or C elevator designation.
- Physically Measure Clearances: Measure the absolute lowest point of the door opening frame and internal cab depth rather than relying on building blueprint drawings.
- Calculate Floor Protection Thickness: If building managers require Masonite or plywood sheets down the hallways, remember to add that material’s thickness to your total door header clearance math.
- Book the Service Window: Coordinate with property management to secure the elevator in dedicated “Service Mode” with protective wall pads hung.
- Audit Floor Structural Ratings: Consult the building structural engineer to verify the maximum floor load limits along the entire upper-level hallway path and at the final machine placement footprint.
Elevator & Upper-Floor Moving Questions, Answered
Yes, provided the combined weight of the machine, rigging crew, and transport gear remains safely within the elevator’s certified load capacity. Utilizing nonmetallic sliders helps pass building safety audits by spreading structural weights across the car platform rather than point-loading it through narrow wheel bearings.
Elevator entry door headers sit lower than the interior ceiling height of the cab. Standard wheeled industrial machine skates lift the machine an additional 4 to 6 inches, raising the top of the asset straight into the structural door frame. Sliders resolve this clearance trap by maintaining an ultra-thin 3/8″ to 1″ ride height.
Yes. Sliders use wide, flat footprints to eliminate the intense linear point-loads that cause wheeled rigger dollies to track, gouge, or crack fragile commercial tile, sealed concrete, and hardwood hallway floors.
You can only drive a forklift into a freight elevator if the car carries an official ASME A17.1 Class C (Industrial Truck Loading) rating. Standard Class A freight elevators are not structurally engineered to withstand the extreme, localized axle pressures of an active forklift, even if the vehicle’s weight sits under the elevator’s maximum payload limit.
You must confirm the elevator’s maximum weight capacity, its certified loading class, the precise physical door opening heights, the corridor overhead clear space, and the upper floor’s maximum structural load rating per square foot with the facility’s structural engineer.