The Messerwelle (for crush/hot cutting) or Schneidwalze (for shear cutting, with knife rings) is a driven, rigid cylindrical shaft that provides the counter-surface or knife-ring carrier opposite the Messerkassette.

For crush / hot cutting (QMK, HK/HMK series): the Messerwelle is Hartmetall-coated (tungsten-carbide), or a Hartmetall-Band is wrapped on its surface, to resist the cutting-blade impact.
For shear cutting (SMK series): the Messerwelle carries knife rings (Messerringe UM …) fixed by grub screws or clamping set, and is hardened and ground.

Dimension table (cutting-roller family)

D (mm)	d (mm)	l (mm)	A	B	i	L	Lges
60	30	120	106	97	48	custom	L + B
80	35	140	128	112	51	custom	L + B
100	45	140	160	143	60	custom	L + B

Bearing load capacities

Roller Ø D	Dynamic radial (kN)	Static radial (kN)
60	14	7.9
80	19.5	11.3
100	29.5	18

Messerwellen-Lagereinheiten (bearing unit types)

Flansch-Festlager Typ A - flange fixed bearing
Flansch-Festlager Typ B - alternative fixed-side
Flansch-Loslager - flange floating bearing (material St37)
Steh-Festlager - pillow block fixed
Steh-Loslager - pillow block floating (material St37)
Steh-Festlager Shop - shop variant, also for cross-cutters

Hardened & ground versions used only with SMK + knife rings. Hartmetall-coated versions used with QMK (crush) and HK130 (hot). Length is custom per customer (web width + overhang).

Knife Shaft / Cutting Roller

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