Product Overview

Built for medium and large-scale AS/RS high-bay storage systems, the double-mast mini load stacker crane is a robust, high-stability material handling unit optimized for heavy-duty continuous operation. Featuring a dual steel mast framework and full servo-driven powertrain, it delivers outstanding structural rigidity and smooth, consistent motion performance. Engineered to handle medium-to-heavy plastic totes, full shipping cartons and industrial material trays, it accommodates taller rack configurations and carries out fully automated storage, retrieval and inventory transfer processes entirely without manual intervention.

Well suited for high-bay facilities, heavy-load operations and 24/7 uninterrupted working conditions, it offers native Ethernet connectivity for seamless integration with WMS and WCS platforms. It stands out for its robust load capacity, exceptional operational stability and long-term running reliability.

Key Technical Specifications

Structural Dimensions & Load Specifications

Specification	Unit	Value	Details
Frame Construction	-	Dual-column Steel Mast	Tailored configurations available on request
Nominal Load Rating	kg	100 ~ 300	Per tote maximum load limit
Maximum Vertical Lift	m	5 ~ 25	Measured to top level of rack system
Compatible Tote Dimensions	mm	400×300 ~ 1000×800	Fits standard Euro totes and custom-sized cartons
Minimum Aisle Footprint	mm	1400	Enables high-density storage layout
Total Unit Weight	kg	4000 ~ 7500	Varies based on lift height configuration
Fork Assembly	-	Three-stage telescopic fork (single/double deep reach)	Clamp-style gripper available as an add-on for carton handling

Dynamic Performance Specifications

Specification	Unit	Value	Details
Peak Horizontal Travel Speed (X-axis)	m/min	300	Servo-driven with infinitely variable speed control
Horizontal Acceleration Rate	m/s²	3.0	Gentle start-stop with integrated anti-sway logic
Peak Hoisting Speed (Z-axis)	m/min	150	Driven by synchronous belt hoist mechanism
Vertical Acceleration Rate	m/s²	2.0	Quiet operation across all speed ranges
Peak Fork Extension Speed (Y-axis)	m/min	60	Three-section telescopic design
Tri-axis Positioning Tolerance	mm	±2 ~ ±5	Dual positioning via laser rangefinder and barcode identification
Single-cycle Throughput	cycles/h	50 ~ 70	One putaway or one retrieval per cycle
Dual-cycle Throughput	cycles/h	70 ~ 100	Combined putaway and retrieval in a single cycle

Electrical & Drive Configuration

Specification	Description
Drive Motor Manufacturers	Premium servo motors from SEW, Siemens or Panasonic
Input Power	3-phase AC 380V / 400V, 50Hz
Total Installed Power Rating	11 ~ 18.5 kW
Power Delivery Method	Conductor rail system / cable drag chain
Onboard Control Unit	PLC from Siemens, Mitsubishi or Omron
Communication Protocols	Supports Profinet, Ethernet/IP, Modbus TCP
Positioning Solution	Integrated laser distance sensor paired with barcode reader
Anti-Sway Control System	Proprietary algorithm limits mast deflection to ≤5mm

Operating Conditions & Safety Features

Specification	Parameter
Ambient Operating Temperature	Standard range: +5℃ ~ +40℃; low-temperature variant available for -25℃ ~ +40℃ cold storage environments
Operational Noise Level	≤80 dB(A)
Enclosure Rating	IP54-rated electrical control cabinet
Standard Safety Provisions	X/Y/Z axis limit switches, emergency stop button, end-of-travel collision buffers, slack rope detection, overload protection, safety light curtains, maintenance lockout device
Optional Safety Upgrades	Explosion-proof electrical enclosure, low-temperature lubrication package for cold storage facilities

Key Strengths

Dual steel mast construction delivers exceptional structural stiffness and outstanding running stability, making it an ideal choice for high-bay warehouse installations
Load capacity ranging from 100kg to 300kg, compatible with oversized totes and heavy-duty shipping cartons
Supports lift heights up to 25 meters, maximizing the vertical storage capacity of warehouse facilities
Precision-controlled acceleration and deceleration minimizes mast sway, ensuring safe and secure handling of high-value inventory
Consistent positioning accuracy and dependable performance even during extended continuous operation cycles
Modular steel structure design offers high expandability and supports a wide range of functional add-ons and customizations
Comprehensive safety interlock system fully compliant with EU CE machinery safety directives
Enables seamless integration with existing warehouse management and control systems (WMS/WCS)
Minimal maintenance requirements and an extended service life of over 15 years under standard operating conditions

Typical Applications

Automotive spare parts warehouses, lithium-ion battery production workshops, GMP-compliant pharmaceutical storage facilities, cosmetic raw material warehouses, tobacco auxiliary material storage, and medium-heavy finished goods storage applications.

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