Siasun Under-ride Lift Mobile Robots

SIASUN Under-ride Lift Mobile Robots

Under-ride lift mobile robots — sometimes called underride AMRs, tunneling robots, or lift-and-carry robots — are low-profile autonomous vehicles that drive beneath a compatible cart, rack, shelf, or fixture, raise it with an integrated lifting deck, and transport it to a destination before setting it down and moving to the next task. The SIASUN robots in this category apply this format to warehouse, e-commerce, manufacturing, and intralogistics workflows where moving the entire load carrier is more efficient than transferring individual items or pallets.

The under-ride approach is commonly selected for goods-to-person picking systems, cart-based line feeding, and flexible buffer storage, because it turns ordinary racks and carts into movable inventory. Since the robot occupies the space beneath the carrier rather than beside it, fleets can operate in dense layouts with narrow travel lanes, depending on the model dimensions and site design.

How Under-ride Lift Robots Work

Each robot navigates a mapped floor using laser-based, vision-assisted, or marker-supported localization depending on the platform, receiving missions from a fleet management system. At a pickup point, the robot aligns itself under the carrier — often using markers or sensing on the carrier underside — lifts the load with its deck, and follows a planned route to the drop location while traffic management coordinates the fleet. In goods-to-person configurations, software sequences rack deliveries to pick stations so operators receive inventory in task order. Charging is handled automatically between missions, and integration with WMS or MES systems drives task creation from real operational events.

Common Applications

• Goods-to-person picking with mobile shelving delivered to pick stations
• Cart and dolly transport for line feeding in manufacturing
• Movable buffer storage that rearranges itself by demand
• Order consolidation and sortation support in fulfillment centers
• Work-in-progress movement between production stages
• Returns processing and restocking flows using standardized carriers

Selection Considerations

Carrier compatibility is the first constraint: cart or rack dimensions, underside clearance, weight when loaded, and lifting interface must match the robot's lift deck and capacity, confirmed against the specific model's datasheet. Floor flatness and cleanliness affect low-clearance vehicles more than larger platforms, so surface condition along routes should be reviewed. Fleet sizing depends on task rates, travel distances, and lift cycles, while software capability — task sequencing, station management, WMS integration, and traffic control — largely determines system throughput. Sites should also plan how people interact with moving carriers, including safety zones and clearly defined pick station behavior.

Pricing and Availability

Pricing for under-ride lift mobile robots depends on the model, lift capacity class, carrier design, fleet size, software licensing, and deployment services. Submit a request for quote from any product page in this category and our team will respond with current pricing and a system recommendation for your workflow.

Frequently Asked Questions

What loads can under-ride lift robots move?

They move compatible carriers — carts, racks, shelves, and fixtures — rather than loose loads. Carrier weight and dimension limits vary by model and should be checked against the datasheet.

Do I need special carts or racks?

Carriers must match the robot's lift interface, clearance, and footprint requirements. Many deployments use purpose-built or adapted carriers, which is typically scoped during project planning.

How is this different from a forklift-style AMR?

Under-ride robots lift the entire carrier from beneath instead of engaging pallets with forks. This suits cart- and rack-based workflows and dense layouts, while forklift formats suit conventional pallet operations.

Can under-ride robots support goods-to-person picking?

Yes. Delivering mobile shelving to pick stations in software-sequenced order is one of the most common uses of this robot format, typically integrated with warehouse management systems.