Roll types

Full range of roll products for paper industry needs

Suction rolls

Suction rolls provide high performance on all types of machines from low-speed pulp drying lines to the latest paper, board and tissue machines designed for operating speeds in excess of 2,000 m/min (6,560 ft/min). Aside from rolls for Valmet machinery, we can also offer appropriate spare rolls for a number of other makes. Many of our latest roll technology innovations can be adapted into spare rolls that are compatible with existing rolls. This is an easy and cost-effective way to improve suction roll performance.

Spare suction roll shells

Suction roll shells are made of the highest quality Duplex stainless steel shell blanks manufactures through a plate hot rolling or centrifugal casting process. Precision drilling ensures extremely accurate hole positioning and superior hole surface smoothness.

Services for suction rolls include:

Roll types

Deflection-compensated rolls

Deflection-compensated rolls provide reliable and stable operation. These rolls are the key elements for efficient pressing and calendering.

Swimming type Valmet Sym Nip Rolls
Zone-controlled Valmet SymZ/SymZS Nip Rolls
Multizone Valmet SymCD/SymCDS Nip Rolls
Valmet SymZL/SymZLC Shoe Press Rolls
Valmet SymBelt Shoe Press Rolls
Spare Valmet CC rolls

Services for deflection-compensated rolls include:

Shoe type roll maintenance
Shoe type roll upgrade edge zone
Seal upgrades
- LR seal upgrade and mechanical seal upgrade

Cast iron rolls

Cast iron rolls offer a reliable, well-performing and durable roll option for all paper and board machines. Our product range includes: cast iron press rolls, dryer cylinders, Vac and Uno rolls for dryer section applications, sizer rolls, applicator and backing rolls for coaters, polymer rolls with a cast iron roll body for multitinip calenders, chilled cast iron thermo rolls, reel drums, winder and belt drums.

Production consumables for cast iron rolls include:

Roll covers
- Press roll covers, sizer roll covers, reel drum covers, and winder drum covers
Stainless steel cover and hard coating for grooved rolls
Doctor blades
- Valmet Double Doctor

High-precision tube rolls

Well-performing tube rolls are essential for paper machine runnability. High reliability and easy repairability in the case of accidents are also important requirements for these rolls. Valmet’s high-precision tube rolls with optional quick change heads were developed to meet these specific demands.

Lead rolls (steel)
Center supported rolls
Reel spools
Lightweight lead rolls based on advanced composites

Spreader rolls

Spreader rolls ensure wrinkle-free end product and equal tension-profiles for paper sheets and fabrics. Valmet can offer curved spreader rolls to all customer needs, e.g.

Spreader rolls with steel spools (+optional hard coating)
Spreader rolls with rubber sleeve
Options:

Adjustable bow amount
Centrally lubricated bearings
With axle cooling

Services for spreader rolls include:

ARTICLES

Ponderay cuts the friction; pares electrical costs

By installing Compact LocSeal low-friction suction roll sealing systems in the forming and press sections of PM 1, Ponderay Newsprint has cut the drive energy requirement by about 570 horsepower, delivering an excellent return on investment.

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