CPD Series Multi‑Mast Dual‑Mode Electric Counterbalanced Stacker

Smart Lifting, Easy Moving — LI‑UNILIFT

Modern mid‑scale warehousing frequently faces mixed stacking demands, ranging from standard‑height rack storage to low‑clearance bay handling and high‑level stock put‑away. The CPD12‑970/910 & CPD16‑D970/970 counterbalanced electric stacker family covers 1200 kg and 1600 kg rated payload capacities. This product lineup supplies diversified mast configurations including 2‑stage standard, 2‑stage full‑free and 3‑stage full‑free masts, alongside patent‑backed floating booster drive assembly and multi‑setting hydraulic descending control. It is well‑suited for production‑line feeding, multi‑level rack replenishment and mixed‑pallet stacking tasks inside manufacturing plants and distribution depots.

Vibration‑Buffed Propulsion System And Tuned Hydraulic Lifting Setup

Every variant within this stacker range adopts patent‑protected floating booster drive‑unit. This mechanical assembly absorbs impact shocks originating from imperfect warehouse concrete floors, isolating vibration away from the AC traction motor, ZAPI controller and wheel assemblies. Consequently, cyclic component wear is suppressed amid frequent start‑stop stacking cycles.

A brushless AC traction motor forms the propulsion core. Carbon‑brush‑related wear points are eliminated, which reduces recurring part‑swap work and cuts long‑term fleet ownership expenditure. Electronic power‑assisted steering delivers light‑weight, low‑noise directional feedback; operators can complete repeated turning movements without excessive muscle strain throughout extended working shifts.

Its hydraulic circuit is fitted with dual‑path lowering solenoid valves, granting three distinct descending speed profiles. Operators can adjust lowering velocity according to cargo weight, pallet condition and surrounding site constraints, delivering refined handling for fragile packaged goods. Long‑life proximity switches implement automatic lifting limit control, halting upward mast travel before mechanical over‑travel takes place, which protects mast chains and hydraulic cylinders from overload‑triggered damage.

Multiple mast alternatives are provided to match varying site requirements. Standard two‑stage masts suit conventional rack heights, while full‑free two‑stage masts enable fork elevation without extending outer mast frames — a key advantage for sites with low overhead doorways. The three‑stage full‑free mast is designed for ultra‑high racking scenarios. Heavy‑duty polyurethane wheel sets sustain dependable rolling performance across typical indoor warehouse surfaces.

Multi‑Layered Safety Architecture Optimised For Elevated Load Operations

Beyond mechanical and hydraulic upgrades, a complete suite of interconnected safety features is engineered specifically to mitigate hazards that emerge while handling raised palletised loads.

Curve‑linked automatic deceleration activates whenever the stacker executes steering movements. Travelling speed is lowered proportionally during turns, which restrains pallet sway and reduces potential tipping risks for elevated payloads. Complementing this function, height‑triggered travel‑speed restriction limits driving velocity once forks reach elevated positions, greatly boosting stability for high‑rack stock handling work.

The integrated ZAPI controller incorporates multi‑dimensional automatic protection logics, guarding the whole electrical system against overload, overheating and unexpected electrical anomalies. Standard‑fit emergency reverse mechanism and emergency brake switch deliver rapid hazard response; operators can initiate instant reverse motion or full power cut‑off to evade collision incidents. Electromagnetic‑regenerative combined braking offers consistent stopping performance for both laden and unladen states, while stepless speed modulation ensures smooth, low‑noise travelling motions.

Versatile Configuration Choices For Diverse Mid‑Duty Intralogistics Task

Featuring 1200 kg and 1600 kg load‑rating options, this CPD stacker series adapts to a broad spectrum of medium‑intensity intralogistics assignments. Typical application contexts include manufacturing workshop raw‑material supply, wholesale storage rack replenishment, e‑commerce fulfilment facilities and compact cross‑dock storage zones.

All models support flexible dual‑mode operation between walkie and stand‑on styles. The retractable operator pedal shortens overall vehicle length and turning radius when folded, facilitating navigation through narrow rack aisles; once unfolded, it establishes a complete stand‑on riding station for longer‑distance transit runs. Users can select among several mast types to fit actual ceiling and rack‑height limits. Selectable fork tilting hardware is available on specified models, improving pallet engagement and release efficiency. The unified 24V‑270Ah battery pack delivers ample runtime to sustain continuous multi‑shift stacking workflows.

Common Modular Layout Simplifies Mixed‑Variant Fleet Maintenance

LI‑UNILIFT builds practical service‑focused design thinking into the full CPD counterbalanced stacker product portfolio. Shared core assemblies including patent floating booster drive‑unit, brushless AC powertrain, proximity‑switch lifting‑limit hardware and mature ZAPI controller streamline inspection, fault localisation and component‑replacement workflows for maintenance technicians managing mixed‑mast fleets.

• Patent floating booster drive‑unit dampens floor‑sourced shocks and extends usable service life for key powertrain assemblies
• Dual‑path lowering solenoid valve realises three adjustable descending‑speed profiles for fine‑grained cargo lowering management
• Durable proximity‑switch lifting‑limit hardware prevents mast over‑travel and safeguards hydraulic system components
• Integrated multi‑fold safety suite covers curve‑based deceleration, height‑linked speed restriction, emergency brake and reverse protection
• Brush‑free AC traction motor removes periodic carbon‑brush inspection and replacement requirements
• Interchangeable mast selections (2‑stage standard, 2‑stage full‑free, 3‑stage full‑free) accommodate different warehouse height limitations

Advancing Configurable Multi‑Mast Counterbalanced Stacker Solutions

Contemporary medium‑load intralogistics keeps raising performance expectations for counterbalanced stackers, demanding interchangeable mast selections, dual‑mode operator positions and tightly‑integrated multi‑layer safety mechanisms. LI‑UNILIFT carries out continuous practical technical refinements for AC‑powered counterbalanced stacking machinery. These optimisation activities involve floating booster‑drive shock‑absorption fine‑tuning, three‑mode descending hydraulic‑circuit calibration, height‑responsive speed‑limiting algorithm iteration and full‑free mast structural‑stability validation work.

In addition to powertrain and hydraulic‑system improvements, human‑oriented ergonomics, multi‑layer active‑safety safeguards and rigid counterbalanced chassis construction remain core engineering priorities. The R&D team keeps investigating forward‑looking development directions such as load‑dependent speed tuning and centralised fleet‑condition tracking for multi‑configuration warehouse equipment pools.

Technical Specifications