The Hidden Battle in the Forming Section
In the highly optimized landscape of the Dutch pulp and paper industry—from the cardboard giants in Eerbeek to the specialized graphical paper mills in Maastricht—the Wet End Crane is a critical asset. It is responsible for the complex and heavy lifting tasks during wire changes, felt replacement, and roll maintenance in the forming and press sections. However, the environment here is hostile. The atmosphere is saturated with 100% relative humidity, temperatures often exceed 50°C, and the air carries corrosive chemical vapors including chlorine and sulfur compounds used in pulping.
Standard industrial drive shafts, typically used for crane travel (Long Travel) mechanisms, face catastrophic failure modes in this zone. The primary killer is not torque overload, but corrosion-induced spline seizure. When a crane sits idle between maintenance shifts, moisture penetrates standard seals. The telescopic splines rust together. When the operator attempts to move the crane, the seized shaft transmits massive axial loads into the gearbox bearings, causing expensive downtime.
EVER-POWER addresses this specific challenge with our Wet End Series Universal Joint Shafts. We do not merely paint our shafts; we engineer them for chemical resistance. By utilizing Rilsan® coated splines, hermetically sealed cross assemblies, and C5-M marine-grade surface treatments, we ensure that the crane is ready to perform instantly, even after weeks of static exposure to the harsh wet end climate.
ISO 12944 C5-M
Coating systems certified for “Very High Marine” corrosivity. Our 320-micron epoxy-polyurethane stack protects the shaft substrate from acidic pulp vapors.
Rilsan® Coating
Spline sections are coated with Polyamide 11. This creates a permanent, low-friction glide layer that is impervious to rust, preventing telescopic lock-up.
IP67 Sealing
Triple-lip Viton seals ensure that high-pressure washdown water and pulp slurry cannot penetrate the bearing cups, preserving the lubricant integrity.
Zero-Maintenance
“Lubricated for Life” options available using synthetic PFPE grease, eliminating the need for maintenance personnel to access dangerous wet end areas.
NEN Compliance
Designed with safety factors compliant with Dutch NEN-EN 13001 crane safety standards, ensuring structural integrity during heavy wire roll lifts.
Technical Parameters: Wet End Series
| Parameter Category | Standard Series | Stainless Series (Premium) | Engineering Relevance |
|---|---|---|---|
| Rated Torque (Tn) | 5 kNm – 55 kNm | 3 kNm – 35 kNm | Sized for crane travel resistance. |
| Max Articulation | 25° | 20° | Compensates for bridge deflection. |
| Core Material | 42CrMo4 Alloy Steel | AISI 316L Stainless Steel | Resistance to chemical pitting. |
| Surface Treatment | Zinc-Nickel + Epoxy | Passivated / Electropolished | C5-M certified protection. |
| Spline Technology | Rilsan Coating | Nitronic 60 (Anti-Galling) | Prevents seizure in static periods. |
| Sealing | Viton Double Lip | Viton + Stainless Shield | Blocks moisture and pulp ingress. |
| Grease Fittings | Stainless Steel (M10) | Stainless Steel (M10) | Corrosion-free maintenance points. |
2025 Global Top 10 Pulp & Paper Crane Component Manufacturers
Leading the industry in reliability and corrosion resistance.
OEM Customization & Precision Manufacturing
Standard industrial parts are not designed for the chemical aggression of a paper mill wet end. EVER-POWER offers complete customization to match your specific environmental conditions and mechanical interfaces.
- ✅ Material Selection: Choose from 42CrMo4, Stainless Steel 304/316, or Duplex steels based on pH levels.
- ✅ Flange Matching: We machine flanges to DIN, SAE, or face-key standards to fit any legacy gearbox (Demag, Abus, etc.).
- ✅ Coating Options: Zinc-Nickel plating, Hot-Dip Galvanizing, or C5-M Epoxy painting.
Expert Answers: Wet End Crane Drivetrains
What is the benefit of Rilsan coating on drive shaft splines?
Can you provide replacement shafts for obsolete crane models found in Dutch mills?
© 2026 EVER-POWER Transmission. All rights reserved. | Optimized for the European Paper Industry.
Disclaimer: All manufacturer names, symbols, and descriptions are used for reference purposes only, and it is not implied that any part listed is the product of these manufacturers.
