4-way shuttle ASRS. PES-orchestrated retrieval. Rack-at-the-dock architecture collapses forklift travel from ~150m to ~25ft. Arctic-rated to −20°F.
X + Y within rack structure
vs. ~150m traditional ASRS
Frozen pallet storage
Whole fleet, one system
The RackBot is a 4-way shuttle that travels inside a fixed rack structure, moving on both the X and Y axes — across bays and between levels — to reach any pallet position without a dedicated aisle crane.
When PES assigns a retrieval task, RackBot navigates to that position, lifts the pallet load, and delivers it to the dock face. No crane. No dedicated aisle per robot. No human dispatcher queuing jobs.
This is not a standalone storage system with an inventory database. Every pallet in the rack is a live asset in the fulfillment sequence — PES assigns retrieval order based on outbound priority, carrier departure, and dock slot availability.
The most important thing about RackBot is not what it does — it’s where it goes. Traditional ASRS sits deep in the warehouse. RackBot belongs at the dock. That single architectural change eliminates the biggest labor cost in pallet retrieval: forklift travel.
The ASRS sits at the rear of the warehouse. A crane retrieves the pallet and deposits it at a pick station. A forklift then travels the length of the building — typically 150m or more, round trip — to bring the pallet to the outbound dock. Every single pallet movement.
The RackBot rack structure is positioned directly at the dock face. RackBot retrieves the pallet inside the rack and presents it at the dock door. A MobilePallet AMR or forklift picks it up and loads the trailer. Same storage density. A fraction of the forklift travel.
Most ASRS vendors give you storage and an inventory database. RackBot runs under PES — which treats every pallet in the rack as an active participant in the fulfillment plan, not a static inventory location.
PES assigns every retrieval and put-away task. RackBot doesn’t decide what to pick next — PES does, based on outbound order priority, dock slot availability, and carrier departure time.
RackBot hands pallets to MobilePallet AMRs at the dock. PES coordinates the handoff timing so AMRs aren’t waiting and dock doors aren’t idle. One brain, all robots.
Inbound pallets aren’t stored in the next open slot. PES assigns put-away positions based on predicted retrieval sequence — pallets needed soonest go to positions that retrieve fastest.
The RackBot Arctic Series is the same 4-way shuttle ASRS configured for frozen and refrigerated environments. It operates at −20°F and runs under the same PES instance as the rest of your fleet.
The Arctic Series RackBot and Arctic Series MobilePallet AMR operate together under one PES orchestration layer — one system manages your frozen and ambient pallet flows simultaneously.
Full shuttle operation in deep-freeze environments. No separate warmed mechanical room required for the shuttle itself.
Confirmed operating duration at freezer temperature. Battery management handled by PES fleet scheduler.
Frozen and ambient pallet storage tasks orchestrated under one PES instance. No separate WMS for the cold zone.
Same rack architecture. Same PES platform. Hardened for frozen storage environments.
RackBot operates under the same PES instance as the rest of the Prime robot fleet. One software platform, one implementation team, one support contract.
4,400 lb capacity. Moves pallets across the floor — from RackBot dock delivery to staging, receiving to put-away. Works with RackBot at the dock face under PES coordination.
Goods-to-person shelf fulfillment. Case and each picking. Operates in the same PES-managed floor as MobilePallet and RackBot — all three under one orchestration layer.
You’re here. High-density pallet storage at the dock. PES-orchestrated retrieval and put-away. The fixed-infrastructure component in a flexible, mixed-robot floor.
Amber items pending engineering confirmation — contact Prime for current values.
| Product Type | 4-Way Pallet Shuttle ASRS |
| Classification | Pallet ASRS — fixed rack shuttle. Not an AMR. |
| Shuttle Movement | X and Y axis within rack structure (4-way). No dedicated aisle crane. |
| Max Speed | TBD⚠ Pending engineering confirmation |
| Operating Temperature | Standard ambient / Arctic Series: −20°F (−29°C) |
| Battery Runtime (Freezer) | 6–8 hours (Arctic Series) |
| Rack Configuration | TBD — aisle/bay specs⚠ Pending engineering confirmation |
| Fleet Management | PES (Prime Execution System) — PMC, RCS, Site Manager |
| WMS / ERP Integration | Via PES API. RackBot does not require direct WMS integration. |
| Safety Certifications | TBD⚠ Pending engineering confirmation |
| Deployment Environment | Warehouse, distribution center, cold storage facility |
| Architecture Pairing | Rack-at-the-dock placement. Compatible with MobilePallet AMR and MobileShelf AMR in mixed fleet. |
Talk through your pallet storage challenge. We’ll walk you through the rack-at-the-dock architecture in a working deployment.
