The Lithium Manufacturing Bottleneck and Our Custom Response

author: David Deng

2026-06-16

Case Study · Custom Engineering

Electric Roll Handling Stacker
for Lithium Battery Manufacturing

How SINOLIFT engineered a precision fleet of cleanroom-ready stackers for a top-tier gigafactory client — handling electrode rolls from 370 mm to 1100 mm.

Overview

A New Era of Material Handling

The manufacturing landscape is shifting rapidly. Green energy initiatives drive massive production. The lithium battery sector leads this charge. SINOLIFT stands at the forefront of this industrial revolution, engineering specialized solutions for complex warehouse challenges.

A top-tier client approached us with a highly specific need: custom equipment for their advanced lithium battery manufacturing plant — to transport delicate electrode rolls safely and handle precise loading and unloading tasks.

Our engineering team analyzed their strict technical requirements. We utilized our most popular, high-end M-Series chassis as the foundation. The result is a specialized fleet of three distinct stacker models, each tailored to handle specific roll dimensions — transforming affordable warehouse equipment into high-precision, cleanroom-ready logistics technology.

Industry Context

Navigating the Severe Demands of the Battery Sector

Production facilities operate under extreme cleanroom protocols. Any contamination leads to catastrophic financial losses. Metal dust is the ultimate enemy — traditional forklifts generate metal shavings during mast operation, which is entirely unacceptable for battery plants. A single microscopic metal flake can cause a battery short circuit.

The materials handled are incredibly fragile. Positive and negative electrode foils are exceedingly expensive, wound onto large, heavy rolls. A simple bump can ruin an entire batch. The rolls weigh hundreds of kilograms — some exceeding a full ton.

Conventional walk-behind stackers lack the necessary finesse. Their hydraulic systems often jump or jerk during lifting. Their turning circles are too wide for cramped assembly aisles. Space is at an absolute premium in modern gigafactories.

Therefore, an Electric Roll Handling Stacker must function as a surgical tool rather than a brute-force lifting device — offering dynamic handling, excellent travel speed, and absolute safety.

Core Technology

Unlocking the Grip: How the Air Shaft Works

The secret to handling delicate rolls lies in the attachment. Our engineers utilized sophisticated air expanding mandrels — a marvel of pneumatic engineering that relies on pressurized air to secure the load without any external crushing of the fragile material.

Five main components of a typical air shaft:

01Central shaft body

02Durable rubber air bladder (internal)

03Expansion lugs / keys (exterior)

04Precision air valve for inflation

05Reinforced shaft end

Four working stages:

①

Insertion

Bladder deflated, lugs retracted. Shaft shrinks to 180 mm — slides into the 183 mm roll core.

②

Inflation & Lock

Air at 0.4–0.8 MPa inflates bladder. Lugs press evenly against core wall. Roll locked — no slipping.

③

Handling

Full roll weight transfers to the stacker. Lifted smoothly, aligned with coating machine.

④

Release

Air released. Bladder deflates instantly. Lugs retract. Shaft extracted effortlessly.

Air shaft mechanism — pneumatic clamping technology for delicate lithium foil roll cores

Product Line

Three Custom Models for Every Roll Dimension

Model 01

370 mm Mandrel Stacker

CDD15 Walkie Frame · Compact Roll Handling

The first vehicle in this custom lineup handles rolls with a length of 370 mm and diameter of 900 mm. The compact chassis provides a tight turning circle, navigating narrow cleanroom aisles effortlessly.

The ram is constructed from premium 304 stainless steel — preventing corrosion, eliminating flaking paint or rust. Non-metallic lifting guide wheels prevent metal-on-metal grinding, guaranteeing a dust-free lifting process.

Roll Length 370 mm	Roll Diameter 900 mm	Turning Radius R1435 mm	Battery 25.6V 105Ah

Charger 25.6V 50A	Low Position 270 mm	High Position 1850 mm	Ram Material SS 304

370 mm mandrel stacker — CDD15 walkie chassis with cleanroom-compliant non-metallic guide wheels

Video: 370 mm model live demonstration

Model 02

600 mm Extended-Reach Stacker

CDD15 Walkie Frame · Extended Load Handling

The second unit tackles a longer payload — 600 mm roll length, 900 mm diameter. The extended length shifts the center of gravity significantly; our engineers reinforced the mast structure accordingly. Remarkably, the turning radius remains at R1435 mm — maneuverability is never compromised.

Electrical specifications mirror the first unit, simplifying maintenance. The AC traction motor ensures smooth travel despite the extended load. Regenerative braking provides ultimate stopping control.

Roll Length 600 mm	Roll Diameter 900 mm	Turning Radius R1435 mm	Battery 25.6V 105Ah

Charger 25.6V 50A	Low Position 270 mm	High Position 1850 mm	Ram Material SS 304

600 mm extended-reach stacker — reinforced mast with identical cleanroom compliance features

Video: 600 mm model live demonstration

Model 03

1100 mm Heavy-Duty Dual-Arm Stacker

CDD20 Dual-Arm Frame · V-Block Reel Cradles

The final machine is a true heavyweight. The roll diameter is a massive 1100 mm — a single ram cannot support this safely. We engineered a robust CDD20 dual-arm reel handling stacker with specialized V-block cradles and electrically adjustable inner arm distance (600 mm – 1600 mm).

Front-of-arm custom nylon V-blocks gently cradle a through-the-core shaft (183 mm core diameter). Safety interlocks include dual mechanical + electrical limits. The turtle speed button (≤3 km/h) allows microscopic adjustments when docking with machinery.

Roll Diameter 1100 mm	Arm Spread 600–1600 mm	Turning Radius R1755 mm	Battery 25.6V 202Ah

Charger 25.6V 100A	Low Position 270 mm	High Position 1900 mm	Turtle Speed ≤ 3 km/h

Engineering Value

Why This Custom Integration Outperforms Standard Machinery

Standard warehouse equipment simply cannot compete here. Our custom fleet delivers undeniable, measurable advantages on the factory floor.

✦ Cleanroom Compliance Non-metallic guide wheels and SS 304 rams prevent metal particle contamination completely.	✦ Material Protection Anti-impact rubber rings and nylon V-blocks ensure fragile lithium foil is never scratched or dented.
✦ Safety Interlocks Dual mechanical and electrical limits with immediate emergency braking protect both operator and load.	✦ Precision Speed Control Turtle speed mode and throttle valve lifting guarantee millimeter-perfect positioning during loading.
✦ Dynamic Adaptability Electrically adjustable dual-arm spacing (600–1600 mm) handles multiple roll sizes on one machine.	✦ High-Endurance Power 202Ah lithium batteries with fast chargers ensure zero downtime in demanding 24/7 gigafactory environments.
✦ Spatial Efficiency Tight R1435 mm and R1755 mm turning radii allow safe maneuvering through heavily congested production aisles.

Applications

Applicable Scenarios Across the Production Line

While their genesis was rooted in the severe restrictions of green energy manufacturing, any facility requiring flawless transportation of heavy, cylindrical, and highly sensitive materials will immediately recognize their value.

Lithium-Ion Battery Lines Feeding raw materials into precision coating machines and high-speed slitting equipment.	Cleanroom Environments Class 10,000 and Class 100,000 dust-free workshops with tight aisles between production nodes.	Packaging Departments Finished battery cell rolls transported to shipping areas with zero product damage.
High-End Printing Massive paper roll handling with stringent quality and contamination control requirements.	Textile Industry Delicate fabric reels requiring precision lifting without surface damage.	Converting & Packaging Industries relying on precise cylindrical roll handling capabilities of all dimensions.

Ready to Upgrade Your Facility's Logistics?

SINOLIFT offers the most comprehensive selection of roll handling equipment in the industry — safe, efficient, and ergonomically engineered for cleanroom-grade precision.

Explore Roll Handling Solutions →

Surviving the Flood: Redefining Heavy Logistics in High-Hygiene Zones

Conquering Corrosive Environments: A Triumph in High-Volume Food Processing