Biomass mill RotaCut®

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Overview

• Macerates fibers and debris in liquids
• Protects downstream system components from damage caused by heavy matter
• Prevents blockages and clogging of pumps, fittings and pipe systems
• Reduces viscosity and homogenizes liquids and suspensions
• Prevents floating layers in digesters and tanks

Product summary
The RotaCut® is a wet cutter (macerator) with integrated heavy material separation developed for reliable chopping and separation of coarse, fibrous and foreign matter in liquid media. It separates heavy matter before the medium reaches the cutter head and then macerates fibers, hair, industrial fibres and disruptive solids to protect downstream components and to homogenize suspensions. The product line covers basic, powerful and vehicle-integrated variants to suit wastewater treatment, biogas, agricultural and industrial applications.

Models

• RotaCut® RC — economical basic cutter
• RotaCut® RCpro — for demanding applications, robust design (also suitable for discharge side)
• RotaCut® RCQ — user-friendly, easy to maintain, online monitoring capable
• RotaCut® RCQpro — robust and operator-friendly, supports ACC plus and remote monitoring
• RotaCut® RCX — most powerful series for high flowrates and high-pressure discharge
• RotaCut® MXL — designed for mobile/tanker applications

Key features

• Integrated heavy material separation (stones, metal parts) to protect cutter and downstream equipment
• Optimized cutting screen geometry (proprietary design) for smooth running and minimal wear; reversible wear-resistant screens
• Stable cutting screen holder with full-surface support to reduce deformation and enable energy-efficient cutting
• Additional central support for cutting screens on Pro and RCX series to withstand high solids loads
• Asymmetric blade rotors developed for high chopping performance with minimal wear
• Movable bearing of cutting blades to ensure continuous contact between blade and screen for reliable cutting of fine fibers
• Blade adjustment function to maintain constant contact between cutting blade and screen
• Pivoting cutter head and service flaps for easy maintenance and quick replacement of cutting components on-site (QuickService)
• Cartridge / Quality Cartridge mechanical seal options to increase maintainability and reliability (notably on RCX types)

Options and additional functions

• Cutting screens: free passage options from 4 mm to 50 mm; stainless steel versions for aggressive media
• Automatic Cut Control (ACC): automatically adjusts blade pressure to maintain constant contact and extend component life
• ACCplus: online monitoring of cutting blade status with external display and integration into central/remote control
• Auto-Reverse function: detects blockages, reverses periodically to maintain sharp cutting edges and reduce power consumption
• Heavy material separator variants to match application requirements
• Debris Removal System (DRS) for RCX: enables regular removal of separated heavy material during ongoing operation with minimal medium loss
• Drive options: hydraulic motors or a variety of geared motors and speeds to fit the application
• Material variants: galvanized steel housing standard; stainless steel available for aggressive applications; cutting tools available in steel or stainless steel

Applications

• Agricultural vehicles and slurry/tanker systems
• Biogas substrate processing and feedstock preparation
• Wastewater and sewage treatment plants (pump stations, digesters)
• Food industry, pulp & paper, abattoirs, and industrial effluents with fibrous/coarse solids

Technical specifications

• Flow rate examples by series: RC up to 600 m³/h; RCpro up to 600 m³/h (discharge side use possible up to ~3 bar); RCQ up to 300 m³/h; RCQpro up to 600 m³/h (discharge up to ~4 bar); RCX up to 1200 m³/h (discharge up to ~6 bar); MXL up to 780 m³/h (tanker/mobile use)
• Cutting screen free passage: 4 mm to 50 mm (selection per task)
• Integrated heavy material separation ahead of cutter head
• Drive: hydraulic motor or geared motors with selectable power/speed
• Seal options: cartridge / Quality Cartridge mechanical seal variants for service-friendly replacement
• Construction materials: steel housing (galvanized) standard; stainless steel variants available
• Features: ACC and ACCplus monitoring, Auto-Reverse, Debris Removal System (DRS) for continuous heavy material removal, QuickService for rapid on-site maintenance