BUYER GUIDE

Under-Rack Lifting AMRs: Warehouse Selection Guide

An under-rack lifting AMR is part of a shelf-to-person system, not a stand-alone vehicle purchase. The robot, movable rack, workstation, fleet software, charging plan and warehouse-control integration must be sized as one operating system. A robot that can lift a rack in a demonstration may still be unsuitable for the real rack geometry, floor, traffic pattern or order profile. Begin the RFQ with warehouse and order data. Require vendors to model peak flows, state their rack assumptions, describe degraded-mode recovery and show how the proposed fleet exchanges tasks and inventory status with the buyer's software stack.

How to shortlist

Rack and load envelope

Define rack footprint, underside geometry, total loaded mass, center-of-gravity limits, shelf overhang and load-distribution rules. Confirm whether existing racks can be adapted or must be replaced.

Lift and docking interface

Compare lift stroke, interface geometry, rack-detection method, pickup tolerance and the controls used to prevent an unstable or incorrectly seated rack from moving.

Layout compatibility

Use measured aisle widths, turning zones, workstation queues, fire lanes, doors, lifts and pedestrian crossings. Include rack clearance and robot recovery access.

Floor and transitions

Document flatness, joints, gaps, slopes, thresholds, surface friction and local floor loading. Ask the vendor to identify excluded zones and any civil work required.

Throughput model

Model order lines, rack hits, station service time, replenishment, empty travel and peak-hour congestion. Vehicle speed alone is not a system-throughput specification.

Fleet resilience

Review dispatch logic, traffic management, loss-of-network behavior, blocked-aisle handling, manual recovery and whether one failed robot, charger or workstation stops the operation.

Energy and charging

Size batteries and chargers against shifts, utilization, charging opportunities and peak demand. Confirm battery service procedures, isolation and replacement access.

WMS, WES and RMS integration

Define ownership of inventory, order release, slotting, task priority, exceptions and audit logs. Request API documentation and a test environment before final system acceptance.

Matching catalog models

25 models

Syrius RoboticsFlexPorter DO

1000 kg1.5 m/sHeavy transport AMR

Inquiry

Model	Payload	Max speed	Navigation	Lift height	Runtime	Positioning		Quote
Syrius RoboticsFlexPorter DO	1000 kg^†	1.5 m/s^†	—	—	—	—	Inquiry	Quote
Syrius RoboticsFlexPorter Go	600 kg^†	1.5 m/s^†	—	—	—	—	Inquiry	Quote
CasunC3-16	1000 kg^†	1.2 m/s^†	—	—	—	—	Inquiry	Quote
ForwardX RoboticsFlex 300-L	300 kg^†	—	—	—	—	—	Inquiry	Quote
Megvii RoboticsMegBot-S800	800 kg^†	1.5 m/s^†	Laser SLAM^†	—	—	—	Inquiry	Quote
Megvii RoboticsMegBot-T1000	1000 kg^†	2.25 m/s^†	QR code^†	—	—	—	Inquiry	Quote
Megvii RoboticsMegBot-T800	800 kg^†	2.1 m/s^†	QR code^†	—	—	—	Inquiry	Quote
Guozi RoboticsAnts 15	1600 kg^†	1 m/s^†	—	—	—	—	Inquiry	Quote
Guozi RoboticsAnts 03	300 kg^†	2 m/s^†	—	—	—	—	Inquiry	Quote
MultiwayMW-C10	1000 kg^†	—	—	—	—	—	Inquiry	Quote
YouibotP500	500 kg^†	1.5 m/s^†	—	—	—	—	Inquiry	Quote
YouibotL1000	1000 kg^†	1.5 m/s^†	—	—	—	+/-10 mm (indoor repeat)^†	Inquiry	Quote