Walkie Heavy-Duty Straddle Stacker

Name: Walkie Heavy-Duty Straddle Stacker
Brand: UniCarriers
SKU: WSX30S-WSX40S
Availability: InStock

Load Capacity 3000-4000 lb.

The UniCarriers WSX Series is a high-performance electric walkie straddle stacker engineered for maximum efficiency in narrow aisles and demanding warehouse environments. Available in 3,000 lb and 4,000 lb load capacities, this heavy-duty machine combines a powerful AC drive motor with a compact design to deliver superior maneuverability and lower maintenance costs. With versatile lift heights up to 152 inches and a smart electric brake system, the WSX30 and WSX40 models provide the precision and reliability essential for optimizing industrial throughput and streamlining material handling workflows.

BRAND

UniCarriers

MODEL

WSX30S-WSX40S

POWER

Electric

Features

Our Ac Motor Does More For Less

Greater torque and faster speeds are only the beginning of what our proven 5.2 HP brushless AC drive motor delivers. This 24V system features an advanced motor controller/AC inverter that distributes consistent power as needed to the AC drive motor or the heavy-duty DC pump motor. The result? Consistently high performance across the battery range for the walkie stacker, with longer run times between charging.

Reach Higher

At 217 inches (18 feet), our lift height is among the highest in the industry — sized just right for two and three shelf racking. The walkie stacker's flat face mast design features rolled steel channels, large cross sections, and thick inner rails for increased capacity retention.

A Turn For The Better

Your straddle pallet jack will get the exceptional stability that comes from the WSX model’s wide wheelbase and tight turning radius. Its 190º steering arc, ball-bearing steering mechanism, large steering control head, and spring-loaded handle all contribute to easily navigating in the tightest of spaces.

Smart Electric Brake

The walkie straddle stacker’s regenerative motor torque, proportional plugging, and our spring-applied electronically released disc brake work together to reduce component wear, extend part life, and eliminate the need for adjustments.

Specifications

Model	Capacity (lb)	Lift Height (in)	Power Type	Length (in)	Width (in)	Height (in)	Weight (lb)
WSX30	3,000	152	24 V	78.3	32.4	48.7	2,800
WSX30S	3,000	152	24 V	78.3	32.4	44.2	2,735
WSX40	4,000	152	24 V	78.3	32.4	48.7	2,800
WSX40S	4,000	152	24 V	78.3	32.4	44.2	2,735
1 Where applicable, does not reflect optional mast collapsed height or additional weight. 2 Various lift heights available to match your exact needs. Where applicable, value shown is maximum fork height available as an optional mast.

Frequently Asked Questions

What is the maximum lift height of the UniCarriers WSX Series?

While the standard configuration offers a lift height of 152 inches, the UniCarriers WSX Series can be equipped with an optional high-visibility mast that reaches up to 217 inches (18 feet). This makes it one of the highest-reaching walkie straddle stackers in the industry, specifically designed to accommodate three-shelf racking systems in narrow-aisle warehouses.

Can the WSX Series handle closed-bottom (double-faced) pallets?

Yes. Because the WSX30 and WSX40 are straddle stackers, the support legs (outriggers) are positioned wider than the forks. This design allows the legs to travel around the outside of the pallet, enabling the machine to lift both open-bottom and closed-bottom (double-faced) pallets, unlike standard pallet stackers that are restricted to open-bottom "skids."

What are the advantages of the 5.2hp brushless AC drive motor?

The UniCarriers WSX Series features a high-performance 5.2hp brushless AC drive motor that significantly enhances operational efficiency while reducing long-term ownership costs. By eliminating carbon brushes, this advanced motor requires far less maintenance and delivers consistent power and torque throughout the battery's discharge cycle, ensuring faster travel and lift speeds even under heavy loads. The integration of this AC technology also enables precise control through regenerative motor torque and proportional plugging, which extends the life of the smart electric brake system and provides the smooth, responsive handling necessary for high-throughput warehouse environments.

How much aisle space is required for the WSX stacker to operate?

The WSX Series is engineered for narrow-aisle efficiency. Thanks to its compact power head and a 190-degree steering arc, it can typically operate in aisles as narrow as 8 to 10 feet, depending on the pallet size and load. Its tight turning radius and spring-loaded control handle make it highly maneuverable in congested manufacturing zones and retail backrooms.

What are the battery and charging requirements for these models?

To meet diverse operational needs, the UniCarriers WSX30 and WSX40 utilize a versatile 24-volt electrical system compatible with several power and charging configurations. High-capacity industrial lead-acid batteries are available for demanding multi-shift applications, while maintenance-free battery options offer a convenient solution for lighter-duty tasks where specialized battery rooms are not feasible. Additionally, the availability of on-board chargers allows the stacker to be recharged using standard wall outlets, providing the flexibility required for retail backrooms, small warehouses, and manufacturing sites with varying infrastructure.

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MODEL: WSX30S-WSX40S