Engineering Data & Technical Specifications: Compact Twin VLM

The Compact Twin is optimized for high-velocity environments, utilizing a dual-tray delivery system to eliminate operator wait time. While one tray is being picked, the next is already positioned for access. For custom layout support or throughput modeling, Contact our Sales Team.

Machine Dimensions & Capacity

Category
System Height
Height Increments
Machine Width
Machine Depth
Tray Widths
Tray Depths
Tray Capacity
Total Machine Capacity
Compact Lift Specifications
3,026 – 16,000 mm (9.9 – 52 ft)
150 mm (5.9 in) steps to match ceiling height
1307 mm (90.83"), 2917 mm (114.84"), 3527 mm (138.86"), 4137mm (176.26")
2988 mm (117.64"), 4242 mm (160")
1,830mm (72") | 2,440mm (96") | 3,050mm (120") | 3,660mm (144")
820 mm (32.3 in) Standard
300 kg (661 lbs) up to 500 kg (1,102 lbs) per tray
50,000 kg (110,231 lbs)

Performance & Drive System

Category
Drive System
Storage Optimization
Positioning Accuracy
Engineering Details
4-Point Metal Rack & Pinion (Durable alternative to belts/chains)
Dynamic and Static Storage Available, Height Measurement (25mm intervals up to 1,000mm)
Precision tray delivery within ± 1.0 mm

Controls, Power & Environment

Category
Access Openings
Control System
Safety Systems
Power Requirements
Configuration Options
Single or Dual access options; Pallet handling & 100% extract available
PLC-based control system with optional integrated software (WMS/ERP compatible)
Standard Safety Light Curtains for personal protection
480VAC / 3PH / 60Hz – 25/32 A (400V in US)

Optional Ancillary Devices

  • Optional Features: LED Bar, Laser Pointer, Pick Display, Label Printers, Scanners, Confirmation Buttons, Foot Pedal.

  • Optional Openings: Pallet handling (In-opening, 100% extract, or partial extract).

  • Tray Accessories: Weland box, Cardboard Totes, Metal Divider System, Molded Totes, Magnetic Dividers

Every system is supported by our national network of direct-hire, factory-trained Field Service Engineers. We don’t use third-party contractors—we send our own experts.

row of vertical lift modules

Maximum Throughput

The Compact Twin is the preferred choice for E-commerce fulfillment and Just-in-Time manufacturing where line-stoppage is not an option.

Key Benefits

  • Zero Operator Wait-Time: Fetch the next tray while the current one is being picked.

  • Efficiency: Significantly higher throughput than standard VLMs in the same footprint.

  • ROI: Optimized for 24/7 high-volume fulfillment operations.

Engineered for 99.9% Uptime

VLM rack and pinion at White Systems Modex booth

Unlike competitors using plastic parts or belts that stretch, the Compact Twin uses a 4-wheel metal rack-and-pinion drive. It’s the industrial standard for precision and long-term reliability.

Precision-engineered VLMs delivering faster picks, denser storage, and reliable uptime—supported by U.S.-based technicians.

Precision-engineered VLMs delivering faster picks, denser storage, and reliable uptime—supported by U.S.-based technicians.

Vertical lift module
Up to 120/hr
Tray cycles per hour
Up to 85%
Floor space reclaimed
Up to 99%+
Picking accuracy
Up to 120/hr
Tray cycles per hour
Up to 85%
Floor space reclaimed
Up to 99%+
Picking accuracy

White Systems builds high-performance Vertical Lift Modules for fast tray delivery, high-density storage, and accurate goods-to-person picking. Our U.S.-based service team supports every system, and our dual-tray and rack-and-pinion designs help customers reduce walking, increase throughput, and reclaim up to 85% of floor space.

Ready to discuss your storage requirements?

Ready to explore automated storage? Send us a message and our team will help you get started.

Customers rely on our automated storage solutions to reclaim space and drive measurable efficiency:

“We have been able to eliminate over 500 storage bin locations. We’ve been able to use that space to maximize and optimize the production of our floor.”

— Warehouse Supervisor at ABB