Beloit 26-inch DD4000 Refiner with Splined Rotor (Recent Rebuild)

GL&V Beloit DD4000 Refiner

Size 26 inch

Splined Rotor, rebuild was 2023

The Beloit 26-inch DD4000 refiner is a double-disc refiner used in pulp and paper mills, featuring a splined rotor design that allows for either standard or Duoflo operation with a single inlet and outlet pipe. 

Key Features and Specifications

• Rotor Type: The unit includes a splined rotor, which in the Duoflo configuration is a "spoked rotor" design that splits the stock flow internally for parallel refining across both sets of discs. The rotor disc is movable on the spline shaft.
• Capacity: The nominal capacity range for the 26-inch DD4000 refiner is approximately 35 to 300 tons per day (T/D), or 35 to 350 T/D depending on the specific configuration.
• Connected Power Range: The power range for the 26-inch model is typically between 250 to 450 HP or 250 to 600 HP.
• Speed Range: Operating speeds are generally in the range of 720 to 900 RPM.
• Operational Design: The DD4000 is a double-disc (DD) refiner, featuring two flat stationary discs and a double-sided rotating disc in between. The Duoflo system allows for plate inspection/replacement without disconnecting the main piping.
• Adjustment Mechanism: It is equipped with an electromechanical positive-action plate positioning system for accurate and stable stock processing.
• Materials: Key components, such as the packing sleeve, are made from centrifugally cast Type 316 stainless steel with a ceramic coating. The sliding head has a stainless steel liner and cladding for corrosion resistance. 

Typical Applications

The Beloit DD4000 refiners are manufactured specifically for pulp and paper mill operation. The 26-inch model is suitable for low-consistency refining processes.