What Is Mobile Shelving? The Complete Guide.

1. What is mobile shelving?

Mobile shelving — also called roller racking, compactus shelving, sliding shelving or high-density storage — is a storage system where shelving units are mounted on wheeled bases that run along floor-mounted or surface tracks. Instead of the multiple permanent aisles that static shelving requires, mobile shelving units slide together to close every aisle that is not in use, opening only the single aisle needed at that moment.

The result is a storage layout that keeps the same shelf capacity but eliminates the wasted floor space that fixed aisles occupy. In a typical static-shelving room, most of the floor area is aisle at any given time; in a mobile-shelving room, almost all of the floor area is shelving, and the aisle is created on demand.

2. How does mobile shelving work?

The system has four core components:

• Floor tracks — either surface-mounted (bolted down with a low-profile ramp either side) or recessed into the floor slab so the finished floor is flush.
• Mobile bases — heavy-duty welded steel chassis fitted with wheels that sit on the tracks. Precision bearings keep movement smooth even under load.
• Shelving units — standard or bespoke shelving bays fixed on top of the bases. Almost any modern shelving system can sit on a mobile chassis.
• Movement mechanism — either manual (a geared handwheel at the end of each bay) or electric (a motor driven by push-button or touch-screen controls, with built-in safety sensors).

To access stored items the user rotates a handwheel or presses a button. The bank of bases slides sideways along the tracks and a single aisle opens between the two bays selected. When work is finished, the aisle can be closed again and the space is reclaimed for storage.

3. Manual vs electric mobile shelving

Both systems use the same core chassis and tracks — the difference is in how the bases are moved.

Manual (handwheel) systems

• Lower capital cost and no electrical installation required.
• Geared handwheel reduces the effort needed to move heavy loads.
• Well suited to archives, records rooms and stores with lighter, less-frequent access.
• No dependency on power — always operable in a power cut.

Electric (motorised) systems

• Push-button or touch-screen operation — no physical effort to move bases.
• Ideal for high-frequency access, long runs and heavy loads.
• Standard safety features include anti-collision / anti-crush sensors, safety floor scanning (which stops movement if anything is detected in the aisle) and emergency stops on every bay.
• Access control, aisle lighting and remote monitoring can be added.

For the powered variant see our dedicated electric mobile shelving page.

4. Benefits of mobile shelving

• Space efficiency — one moving aisle instead of many fixed aisles releases significant floor area for extra storage, additional workspace, or a smaller room footprint altogether.
• Security — lockable end panels, aisle locks and access-controlled electric systems protect confidential records and controlled stock.
• Organisation — bay-by-bay indexing, colour coding and shelf labelling keep large collections systematically ordered and quickly retrievable.
• Protection — closed banks of shelving keep contents shielded from dust, ambient light and airborne contamination — important for archives, museum collections and pharmacy stock.
• Flexibility — shelves and dividers can be reconfigured as the collection grows or changes without altering the base structure.

5. Who uses mobile shelving?

• NHS trusts and healthcare — patient records, medical libraries, pharmacy and controlled-drug stores, pathology and radiology archives.
• Libraries and archives — public libraries, university libraries, county record offices and national archive facilities.
• Universities and research institutions — journal stacks, teaching collections, laboratory storage.
• Local authorities — council records, planning archives, electoral registers.
• Legal firms — case files, deeds, wills and long-retention client records.
• Museums and heritage organisations — object stores, textile stores, framed-art storage and reserve collections.
• Commercial and industrial storage — parts stores, workshop consumables, retail stockrooms and evidence stores.

6. Mobile shelving compliance

Two frameworks govern mobile shelving in the UK:

• BS EN 15095 — the British / European standard covering the safety requirements of powered mobile shelving, racking, cantilever racking and pallet racking. It defines the design, stability and safety-device requirements for the system.
• PUWER 1998 — the Provision and Use of Work Equipment Regulations. Mobile shelving is classed as work equipment, so the duty-holder must ensure it is suitable, maintained in a safe condition, and inspected at appropriate intervals by a competent person.

Regular planned inspections keep systems compliant, catch wear before it becomes a failure and provide the documented evidence duty-holders need. See our planned maintenance & PUWER inspection service.

7. Is mobile shelving right for you?

Mobile shelving tends to be the right answer when:

• Floor space is constrained and static shelving cannot grow any further.
• The collection or stock is growing and a future-proofed layout is needed.
• Access is frequent but not continuous — items are retrieved regularly through the day, but not every bay is being worked simultaneously.
• Security or environmental protection of the contents matters.
• Consolidating storage into a smaller footprint would free rooms for other uses.

Static shelving may still be the better fit when:

• Multiple users need simultaneous access to many bays at once (e.g. a live picking operation).
• The room is very small and one or two bays already meet the need.
• The floor cannot be prepared to the flatness required for track installation and remediation is not viable.

A free site survey is the only accurate way to compare the two for your specific room — capacity, aisle count, floor condition and access patterns all factor in.

Frequently asked questions