Surface treatments

Following surface requests can be realized on request:

  • Rubber coating
  • Chrome plating
  • Teflon
  • Electro polishing
  • Belt grinding, stone grinding
  • Polyurethane
  • Silicone laminating
  • Painting
  • Sheet metal cladding

Nip Rollers

Standard nip roller
Synchronised pressure roller standard

Standard nip roller
  • Out of steel roller or solid core
  • Crowned rubber grinding
Sample drawing of a standard nip roller
  • Roller ball length up to 8000 mm
  • Maximum diameter (D max): 500 mm
  • Wall thickness and material as desired
  • Other dimensions on request

Synchronised pressure roller standard
  • For constant NIP on different pressure
  • Cylindrical rubber grinding
Sample drawing of a pressure roller
  • Length and diameter on request
  • Wall thickness and material as desired

Steel guiding rollers

10000 mm

Length

800 mm

Diameter

0,05 mm

Radial run-out
  • Manufacturing out of seamless or welded steel tubes
  • Maximum length (L max) 10000 mm
  • Maximum diameter (d max) 1200 mm
  • Radial run-out tolerance depending on length and diameter up to 0.05 mm
  • Standardized manufacturing: Turning
  • Surface treatments on request
  • Each roller is assigned a measuring protocol
Beispielzeichnung einer Standardleitwalze

The roller made out of steel, which is for the transport of webs and endless conveyers used in the various production procedures, is a key component in mechanical engineering and construction.

With our modern machine tools specially tailored to this product, we are able to produce precise steel guide rollers with a few precisely defined process sequences, which meet or exceed the requirements of our customers with an optimized material usage.

„The world’s leading machine manufacturers and plant builders trust our product”

Download product list in PDF format | guiding rollers / 150 kB

Rollers for nonwovens industry

Tambour rollers
Worker / turner
Fleece track
Cross lapper
Oven

Tambour rollers

5000 mm

Length

1200 mm

Diameter

0,05 – 0,03 mm

Radial run-out
Sample drawing of a tambour roller
  • Maximum length (L max): 5000 mm
  • Maximum diameter (D max): 1200 mm
  • Radial run-out tolerance between 0.05 and 0.03 mm

Worker / turner

Execution as desired

Fleece track

Execution as desired

Cross lapper

Execution as desired

Oven

Execution as desired

Spiral expander rollers

Wire profile

T-Profil 5×5 – 1.4571

I-Profil 7×3 – 1.4301

Right-hand or left-hand version

Sample drawing of a standard expander roller

Screw pitch


4 x 12 = 48 mm – 4thread
4 x 24 = 96 mm – 4thread
3 x 12 = 36 mm – 3thread
3 x 24 = 72 mm – 3thread

Radial run-out tolerance up to 0,5 mm
Finishing: polishing
Standard diameters = 80 – 220 mm

Stainless steel guiding rollers

8000 mm

L max

219 mm

Standard diameter

2 – 4 mm

Wall thickness
  • Made of calibrated, longitudinal welded tubes
  • Material: 1.4301 or 1.4404 (AISI 304, AISI 316)
  • Radial run-out tolerance depending on length and diameter up to 0,3 mm
  • Standardized surface treatments: Belt grinding
  • Other surface treatments on request
  • Control on concentricity with automatic measuring devices
  • Each roller is assigned a measuring protocol
Sample drawing of a standard guiding roller
  • Maximum length 8000 mm
  • Storing standard diameters 80-219 mm
  • 2-4 mm wall thickness
  • Further dimensions can be delivered at request

One of our core competences is the calibration of stainless steel tubes on accurate shape tolerances. With this procedure we can do without the costly machining of the tubes. The surface of the rollers is usually belt polished or according to specification coated, for example with non-stick coatings made out of PTFE, FEP or PFA.

Our modular build production process contains automated stations for the joining and welding of the bottom-shaft units, a series belt polishing station as well as an all-over quality control of every single guide roll on a special test bench with digital dial gauge and immediate reporting of the measured values.

Due to this production philosophy we are able to offer an overall solution that is highly attractive in terms of price and quality. We can proudly say:

“We are market leader for stainless steel guide rollers in Europe “

Heating and cooling rollers

Single-coat cooling rollers
Double-coated cooling rolls with steel coating
Double-coated cooling rolls with stainless steel coating

Single-coat cooling rollers

1200 mm

Diameter

10000 mm

Length

550 mm

Wall thickness

0,05 – 0,5 mm

Radial run-out
  • Diameter: 100 – 1200 mm
  • Bale length: 1000 – 10000 mm
  • Wall thickness: 5 – 50 mm
  • Typical materials: all common steels and stainless steels
  • Typical radial runout accuracy: 0.05 – 0.5 mm based on the total length
  • Typical surface: turned, belt grinded, chrome-plated, rubberized, Anti-adhesion coating
  • Balancing: static or dynamic in all standard balancing qualities according to DIN ISO 1940
  • Pressure test: according to specification, usually with water

We manufacture this type of cooling roller with coatings, made of stainless steel or steel, whereby the steel rollers are usually given a coating for protection against corrosion. If we use our stainless steel guide roll production for the cooling rollers, the typical dimensions and geometric tolerances mentioned there, also apply to wall thicknesses of 2 – 5 mm.

The bottom-shaft units are mostly manufactured in welded construction, less often as screw construction. The water drainage can be designed on both sides as well as on one side with internal water return.

Depending on the requirements, the thick-walled roller sleeves are turned inside out in order to obtain a uniform wall thickness across the width and circumference. As a rule, however, this is not desired, since the best compromise between price and function is often in the foreground in the case of single-coat construction.

If the dimensions and tolerances permit, we therefore recommend our cooling rollers made of calibrated stainless steel tube, because a uniform wall thickness is guaranteed, since the sheet metal coat is not turned.

Double-coated cooling rolls with steel coating

1200 mm

Diameter

4000 mm

Length

3 – 50 mm

Wall thickness

0,05 – 0,5 mm

Radial run-out
  • Diameter: 200 – 1200 mm
  • Bale length: 1000 – 4000 mm
  • Wall thickness outer coat: 3 – 50 mm
  • Wall thickness inner coat: 8 – 50 mm
  • Typical materials: all common steels and stainless steels
  • Typical radial run out accuracy: 0.05 – 0.5 mm based on the total length
  • Typical surface: turned, belt grinded, chrome-plated, rubberized, Anti-adhesion coating
  • Balancing: static or dynamic in all standard balancing qualities according to DIN ISO 1940
  • Pressure test: according to specification, usually with water

The use of double-coated cooling rolls is necessary, if a defined cooling of the web with minimal deviation of the temperature over length and width is important in the production process.

Due to the forced guidance of the cooling water in a helical channel, which is formed between the inner and outer coat of the cooling roller, the surface temperature of the cooling roller or the heat transfer to the web can be set very precisely. Depending on the requirement profile, the water ducts are arranged in co current or counter current. The internal structure of the cooling rollers can be specified by the customer or designed by our specialists according to the specified boundary conditions. On request, we can create the mechanical and thermal design of your cooling roller(s) including recommendations for rotary unions and roller bearings.

The materials used are again steel and stainless steel as a welded construction or with screwed pin base units.

Double-coated cooling rolls with stainless steel coating

1200 mm

Diameter

4000 mm

Length

3 – 5 mm

Wall thickness

0,1 – 0,5 mm

Radial run-out
  • Diameter: 200 – 1200 mm
  • Bale length: 1000 – 4000 mm
  • Wall thickness outer coat: 3 – 5 mm
  • Wall thickness inner coat: 8 – 20 mm
  • Typical materials: all common steels and stainless steels for the Inner body, outer coat usually made of 1.4301 or 1.4404
  • Typical radial run out accuracy: 0.1 – 0.5 mm related to the Overall length
  • Typical surface: turned, belt grinded, Anti-adhesion coating
  • Balancing: static or dynamic in all industry-standard Balancing qualities according to DIN ISO 1940
  • Pressure test: according to specification, usually with water

A speciality is cooling rollers with an inner body made of black steel and a thin-walled stainless steel outer coat. The outer sheaths are rounded from 3 – 5mm thick stainless steel sheet and shrunk warm onto the inner body without internal processing. The outer coat adapts to the shape of the inner body and after finishing, this coat has a very uniform wall thickness. With this design, we achieve radial run out accuracies of 0.1 – 0.5 mm and are therefore able to offer a double-coated cooling roller at a very good price-performance ratio, which can be used in many production processes. The decisive advantage: The surface of the cooling roll is 100% corrosion-protected without subsequent coating. The usual, expensive and time-consuming chrome plating is completely eliminated.