Disc Refiner

A disc refiner uses relative motion between rotor and stator plates to shear, work and fibrillate pulp fibers. Plate segments, bars and grooves form the working surfaces. Shaft sleeves, bearings, seals, housing liners, feed screws and flow guide plates are key maintenance parts.

Disc refiner

Equipment Section View

Disc refiner section view showing component positions
Disc refiner section view showing component positions

A disc refiner uses relative motion between rotor and stator plates to shear, work and fibrillate pulp fibers. Plate segments, bars and grooves form the working surfaces. Shaft sleeves, bearings, seals, housing liners, feed screws and flow guide plates are key maintenance parts.

Equipment Parts

Part Identification and Technical Details

Explore part names, images, material options and technical requirements. Select a card to open the corresponding replacement part page.

Major Components and Assemblies

Major Components and Assemblies

Individual and Maintenance Parts

Individual and Maintenance Parts

01

Refiner Disc / Plates

Technical Requirements
Cast iron working surface approximately 50–62 HRC; use corrosion-resistant stainless steel for corrosive wet service
02

Refiner Plate Segments

Technical Requirements
Approximately 38–60 HRC; balance wear resistance, corrosion resistance and fracture resistance for the pulp grade
03

Rotor Refiner Segments

Technical Requirements
Requires dynamic balancing; mounting face flatness and segment weight variation to OEM specifications
04

Stator Refiner Segments

Technical Requirements
Control parallelism and refining clearance in conjunction with the rotor segments
05

Finebar Refiner Plates

Technical Requirements
Fine bars must be intact and free of shrinkage cavities and cracks; bar height, bar width and open area as specified in the drawing
06

Refining Bars

Technical Requirements
Typically 45–60 HRC; prioritize resistance to fatigue spalling
07

Refining Grooves

Technical Requirements
Groove width, groove depth and crossing angle affect specific edge load; measure these features against the original design
08

Shaft Sleeve

Technical Requirements
Stainless steel surfaces may be hardened to approximately 35–45 HRC; sealing surfaces require precision grinding
09

Bearings / Seals

Technical Requirements
Raceways approximately 58–64 HRC; select elastomers for temperature and chemical exposure
10

Housing Liner

Technical Requirements
Control corrosion resistance, weld quality and assembly clearance
11

Feed Screw

Technical Requirements
Substrate approximately 180–320 HBW; working edges require erosion resistance and resistance to bending
12

Flow Guide Plate

Technical Requirements
Flat surfaces and smooth edges to prevent fiber buildup and localized erosion

Materials for similarly named parts may differ by OEM, machine model and operating conditions. Confirm the machine model, OEM drawing number and measured dimensions before ordering or manufacture.

Materials for similarly named parts may differ by OEM, machine model and operating conditions. Confirm the machine model, OEM drawing number and measured dimensions before ordering or manufacture.

Equipment Manufacturers and Series

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Manufacturing Services in China

From Technical Assessment to Finished-Part Delivery

ANRANST provides customers worldwide with engineering assessment, production at certified foundries to drawing, quality control and finished-part delivery for custom wear parts and industrial spares, with scope to support other custom industrial parts.

01

Drawing and Engineering Review

We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.

02

Material and Heat-Treatment Specification

Material grades and heat-treatment processes are specified order by order, confirmed in the technical agreement and tracked through production.

03

Quality Control

Drawing confirmation, material and process control, production tracking, inspection and acceptance coordination.

04

Finished-Part Delivery

We coordinate manufacturing, quality confirmation, packaging and delivery of complete finished parts in a workable, closed-loop supply process.

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