How to Choose a Crane for Paper Mill Machinery
Cranes for paper machinery manufacturing are configured across four production stages: paper machine, rewinding, coating, and cutting. The paper machine stage uses QD Type cranes (10–50 t) with high lift height and C-Hooks; the rewinding stage uses LH Type cranes (5–20 t) with variable frequency micro-speed control; the coating stage uses LD Type cranes (3–10 t) for precision positioning; and the cutting/packaging stage uses KBK cranes (1–5 t). Total plant investment ranges from approximately $37,000 to $119,000.
Paper Machine Section: Heavy-Duty Roller Hoisting with High Lift
Calender rolls and dryer cylinders in the paper machine section weigh 5–15 t each. We recommend QD Type cranes rated at 10–50 t with a lifting height of 14–20 m. Since paper mill workshops operate at 80–90% humidity, waterproof electrical systems are essential. Kelude's paper machine cranes come standard with C-Hooks and IP55 waterproof electrical enclosures. Roller hoisting is performed using nylon slings (width ≥ 100 mm) paired with a spreader beam.
Rewinding & Slitting Section: Variable Frequency Micro-Speed Control
We recommend LH Type cranes rated at 5–20 t for this stage. Kelude cranes come standard with variable frequency hoisting (0.5–5 m/min), keeping micro-speed fluctuation within ±5%. A KBK workstation crane (0.5–2 t) is installed above the slitting machine for blade changes.
Coating Machine Assembly: Precision Roll Installation
Coating rolls weigh 1–5 t and require coaxiality of ≤ 0.02 mm. We recommend LD Type cranes rated at 3–10 t. Kelude cranes feature variable-frequency drives with PID closed-loop control, achieving positioning accuracy of ±5 mm. A jib crane is added at the coating head for additional flexibility. Investment for this stage is approximately $22,000–$44,500.
Cutting & Packaging Section: Workstation Crane Systems
We recommend a combined KBK + LD configuration: KBK handles light, high-frequency loads while LD handles heavy, low-frequency lifts. The whole plant solution requires a total investment of $37,000–$119,000. Anti-condensation heating tape and sealed electric control cabinets are added to withstand the high-humidity environment.
Paper Machine Roll Hoist QD Type10-50t C-Hook+nylon sling | Rewinder Bed Roll LH Type5-20tvariable frequency micro-speed | Coating Precise Positioning LD Type3-10t PIDClosed Loop±5mm |
Cut-to-Length Knife Change KBK 0.5-1tStation Hoist | Waterproofdesign IP55+anti-condensation heating tape | whole plant solution 25-80Omni-Safecoverage |
Crane Configuration Comparison Table for Paper Machine Sections
| Process Section | Machine Model | Capacity (tonnage) | Lifting Height | Specialconfiguration | Investment |
|---|---|---|---|---|---|
| Paper Machine | QD | 10-50t | 14-20m | C-Hook+nylon sling | 25-6010K |
| Rewinding | LH | 5-20t | 10-16m | variable frequency micro-speed0.5-5m/min | 15-3510K |
| Coating | LD | 3-10t | 10-14m | PIDClosed Loop±5mm | 15-3010K |
| Cutting & Packaging | KBK+LD | 1-10t | 6-10m | Station Hoist+Heavy loadspare / standby | 10-2510K |
| Plant-Wide | Modular Combination | 1-50t | 6-20m | Waterproof+Zone-Specific Customization | 25-8010K |
Kelude Heavy Industry has spent years supplying cranes for the paper machinery sector, giving us an in-depth understanding of how the hot, humid conditions in a paper mill challenge electrical systems. From damage-free hoisting of paper machine rolls to precision alignment of coating rollers, and from variable frequency micro-speed control of rewinder drums to rapid blade changes for cutters, Kelude offers proven solutions tailored to every stage of the process.
Roll Hoisting Core Expertise Adjustable Spreader Beam+nylon sling+polyurethane liner, Scratch-Free Mirror Finish Roll Handling Hoisting | High-Humidity Environment Solution IP55Waterproofelectrical cabinet+anti-condensation heating tape+Stainless Steel Spare Parts, Paper Manufacturing Workshop Long-Term Moisture-Proof Protection | Full Process Coveragecoverage Seamless Integration of 5 Sections: Paper Machine, Rewinding, Coating, Cutting, Packaging, Plant-Wide Material Flow Optimizationdesign |
FAQ: Waterproofing, Lifting Gear & Positioning Accuracy
Q: What is the waterproofing requirement?
A: The electrical cabinet is rated IP55 or higher, and the motor is fully enclosed. An anti-condensation heating tape is fitted as standard, keeping the temperature 5°C above the dew point.
Q: What lifting spreader is used for paper machine rolls?
A: A nylon sling with an adjustable spreader beam. Standard nylon slings are used for loads under 5t, while polyurethane-coated C-Hooks handle loads from 5t to 15t.
Q: What is the positioning accuracy for the coating roll?
A: Coaxiality is held to ≤0.02mm. Closed-loop PID control positions the trolley within ±5mm.
Q: What lifting height clearance should beFuture-Proof Provision?
A: A clear height of at least 14m is recommended. The calender frame stands 6–8m tall; add 2–3m for the spreader and load, plus 1m of safety margin.
