Twin cylinder counter rotating

[ 01 ]

Nitrided cylinders

We supply complete twin counter rotating cylinders. Based on our large experience we can recommend the proper type of solutions to minimize wear.

[ 02 ]

Cylinders lined with Bimetallic liners

We deliver new twin cylinders according to OEM’s specification and quality with bimetallic liners with different alloy selection.

[ 03 ]

Bimetallic liner (replacement)

For extreme wear we recommend bimetallic liners to be fitted in an outer housing. In a lot of cases, we can upgrade old worn nitrided cylinders and fit bimetallic liners.

[ 04 ]

The advantage of our twin cylinders

Up-to-date machinery and CAD CAM facilities make it possible to manufacture high-quality complex products with tight tolerances, and a high surface finish suitable to withstand wear and or corrosion conditions.

Various material options, from nitrided to bimetallic liners, will extend the cylinder's lifetime.

Reduce costs if liners are replaced after the first service.

The optimal cylinder-material in combination with screw-materials.

Materials for twin cylinders

Choosing the right cylinder material is important for achieving the right performance and reducing wear and corrosion.

MM Code

Base Material

Treatment

Abrasive Wear Resistance

Corrosive Wear Resistance
MM41

Quenced and Tempered

Nitriding

+

+
MM34

Quenced and Tempered

Nitriding

+

+

MM41

MM Code

MM41
Base Material

Quenced and Tempered
Treatment

Nitriding
Abrasive Wear Resistance

+
Corrosive Wear Resistance

+

MM34

MM Code

MM34
Base Material

Quenced and Tempered
Treatment

Nitriding
Abrasive Wear Resistance

+
Corrosive Wear Resistance

+

Materials for twin cylinders

Choosing the right bimetallic liner material is important to have the right performance to improve wear and corrosion resistance.

Type

Alloy

Alloy components

Hardness [HRC]

(a) Hardness of matrix, tungsten carbides have a hardness of 89 HRC.

Abrasion resistance

(x good) to (xxxxx excellent)

Corrosion resistance

(x good) to (xxxxx excellent)
KB 100

Fe

Ni - C - B

58 - 65

++

+
KB 109

Fe - Cr

Ni - Mo - Cu - C - B

58 - 65

+++

+++
KB 200

Ni - Co

Cr - Mo - B

58 - 65

+

++++
KB 300

Ni

Cr - Ni - Co - B - W

58 - 65

++++

++++
KB 350

Ni

Cr - Si - B - W

58 - 65

+++++

++++