Overview
Multi-level facilities need material lifts that can move heavy loads reliably between more than two elevations. Hydraulic VRCs are limited to single-level transfer. The Autoquip mechanical 4-post VRC removes that limitation — its mechanical chain-drive system supports programmable stops at multiple levels with up to 100 feet of total vertical travel and capacities up to 20,000 lbs.
At the heart of the system is a heavy-duty SEW Eurodrive gear motor with instantaneous braking capability. The motor provides consistent, repeatable stopping and holding of the suspended carriage at every landing during loading and unloading. Combined with a synchronized dual-chain lifting system and maintenance-free carriage rollers, the Autoquip 4-post delivers rugged, long-service-life performance with minimal downtime.
Durability and Construction
Every component in the Autoquip 4-post is engineered for sustained heavy-duty operation.
- High-capacity steel rollers with spiral-wound, Teflon-impregnated bushings for smooth, reliable carriage movement
- Heavy-duty SEW Eurodrive gear motor designed for years of rugged, continuous service
- Synchronized dual-chain lifting system keeps the carriage level throughout travel — even with off-center loads
- Minimum ¼-inch thick steel reinforced platform minimizes deck deflection and maximizes load stability
- Structural steel guide beams ensure consistent, reliable roller tracking and extend beam life
- Minimum 3:1 structural factor of safety — among the strongest in the industry
Capacity and Performance
- Load capacity: up to 20,000 lbs
- Vertical travel: up to 100 feet
- Multi-level operation: programmable call-and-send to any number of levels
- Open carriage sides: versatile loading from multiple directions for flexible product flow
- Straddle design: lower stress on guide rollers for extended component life
Low Maintenance Design
The SEW Eurodrive gear motor requires minimal service. Carriage rollers are maintenance-free and require no lubrication. The Eurodrive motor includes a manual brake release override handle for easier start-up and troubleshooting. The straddle four-post configuration distributes loads evenly, placing lower stress on guide rollers and extending their useful life compared to cantilever or two-post designs.
Safety Systems
Autoquip builds comprehensive safety into every 4-post VRC, meeting or exceeding multiple recognized standards including ASME B20.1, NFPA 70, ASTM-A36, ANSI Z535, and AWS D.1.
- Load jam sensors suspend motor operation if the carriage or load becomes jammed between landings
- Motor control panel security requires a key switch before resuming operation after a load jam
- Over-travel sensing switch stops the lift if travel continues past the uppermost landing
- Slack chain sensors on all lifting chains stop operation if slack is detected
- Counterweight sensors serve as backup to slack chain detection
- Certified carriage brakes stop falls in the unlikely event of cable breakage
- Interlocked landing gates lock automatically when the carriage leaves a landing
- Gate status switches prevent operation while any gate is open
- Standard shaft-way barrier bar system for upper-landing personnel safety
Autoquip 4-Post vs. Wildeck 4XLift
Both are four-post mechanical VRCs for heavy loads, but they differ in drive system, capacity ceiling, and control technology. The Autoquip uses a SEW Eurodrive gear motor with dual-chain synchronization and is rated to 20,000 lbs with 100 ft travel. The Wildeck 4XLift uses a proprietary drive with the patented AutoSenz® overload detection system and SmartControl touch screen, with capacities reaching 30,000 lbs and 150 ft travel. Both meet ASME B20.1. Choose based on capacity requirements, preferred control features, and application-specific safety needs.