Client Build: A Heavy-Duty Mobile Trolley for a Laboratory Reactor

Precision Science Needs a Solid Foundation

Laboratory equipment is heavy, expensive and often needs to move. A stainless steel pressure reactor, its stirrer motor and its control unit can't simply sit on a standard lab bench, especially when the setup needs to be rolled into position, connected to gas lines and analysers, then moved out of the way again.

One of our clients, a research laboratory, came to us with exactly that challenge. They needed a heavy-duty mobile trolley to carry a reactor on one level and its control unit on another, all in a compact footprint that could be wheeled around the lab.

The Brief

The client sent through a drawing of the trolley they wanted to build, along with a shopping cart of T-slot parts. Their requirements were clear:

• A 65 kg reactor on the bottom table

• An 18 kg control unit on the top table

• A quote that included every nut and bolt needed for each part

• Advice on the best tabletop sheet for a heavy-duty application

That last request is one we love. The client knew what they wanted to build and trusted us to fill in the details that make it work.

The Design

A low, stable base for the reactor. The heaviest item sits lowest. The base is a rectangular frame of black anodised T-slot profile at a comfortable working height, keeping the reactor's centre of gravity low so the trolley stays stable when it's moving.

A rear tower for the control unit. Two uprights rise from the back of the base, tied together with horizontal rungs that add rigidity and give handy places to route and clip cables.

A cantilevered top table. The top frame reaches forward over the reactor, so the control unit sits right above the equipment it runs, with short cable runs and a compact footprint. Two angled braces run from the uprights up to the front of the top frame, turning it into a rigid triangle that carries the control unit without flexing.

An open centre on top. The top frame is open in the middle, leaving room for cables and for the reactor head. As the lab photos show, it also gives the team a convenient place to rest the reactor head, with its stirrer and fittings hanging through, while the vessel is opened.

Gusseted corners. Every joint uses gusseted corner brackets for stiffness under load.

Locking castors. Heavy-duty locking castors let the team roll the trolley into position and lock it firmly in place before connecting gas lines and instruments.

One profile throughout. The whole frame is built from our 4040 Powerhouse T-slot profile. Using a single, heavy-duty 40 x 40 mm profile for the base, uprights, top frame and braces keeps the design simple, means every bracket and fastener is interchangeable, and gives plenty of strength for a 65 kg reactor and an 18 kg control unit.

Choosing the Right Tabletop

For the reactor table we recommended aluminium checker plate (tread plate). It suited this job for several reasons:

• Strong and stiff. It carries a concentrated load like the reactor's base without sagging between the frame rails.

• Easy to clean. A metal surface wipes down after spills and won't absorb liquids the way timber or MDF can.

• Durable. It shrugs off knocks from tools and fittings and won't swell or delaminate in a lab environment.

• Grip. The raised pattern helps stop equipment sliding when the trolley is moved.

• A clean look. The bright finish sits well alongside stainless lab equipment.

We supplied 3 mm thick aluminium checker plate, which gives a solid, rigid surface for the reactor while keeping the trolley's weight down.

Every Nut and Bolt Included

The client asked us to add all the fasteners needed for each part, and we did. We worked through the drawing joint by joint and supplied the matching T-nuts, bolts, washers and brackets for every connection, so nothing was missing when it came time to put the trolley together. For a lab team that would rather be running experiments than chasing hardware, that's a big time saver.

In the Lab

The finished trolley now sits at the heart of the client's setup, with the reactor on its checker plate table, the control unit above, and gas analysers, a tube furnace and gas lines on either side. When the setup needs to change, the brakes come off and the whole rig rolls to its new position.

Why T-Slot Suits Laboratory Equipment

Strong for its weight. Aluminium profile carries heavy instruments without the bulk of a steel frame, so the trolley is still easy to push.

Corrosion resistant. Anodised aluminium suits a lab environment and cleans up easily.

Endlessly adaptable. Brackets for gauges, sensors, cable trays or a second instrument can be added anywhere along the slots, so the trolley can evolve with the research.

Built to the drawing. Every member is cut to size, so the trolley fits the equipment exactly rather than forcing the equipment to fit a standard frame.

Need a Custom Lab Trolley?

Whether it's a reactor stand, instrument cart, fume cupboard frame or test rig, send us your drawing and the weights involved. We'll quote the profile, brackets, sheet and every fastener you need, and we're happy to advise on the best options for your application.