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The main distinguishing feature of KW roller chains
as compared to standard roller chains are their seamless,
cold-extruded bushes, case-hardened pins,
ball-blasted, quenched and tempered link plates and
through-hardened rollers. The precision of the finishing
and the heat treatment of their components ensure
that all components expose exceptionally good
wear resistance properties and guarantee the perfect
length accuracy and straightness of the chain.
The alloyed case-hardened steel used for the pins
(up to 1 ½") provides good shear strength and core
strength. The surface quality is further enhanced
by precision-grinding, which reduces the frictional
resistance between the pin and the bush.
The seamless bush guarantees optimal cylindricity.
The accuracy of this is much higher than for bushes
made of precision-steel pipes. This increases the
length precision of the chain. The case-hardened
steel used for the bushes provides high surface hardness
and an optimised wear resistance. The through
hardened rollers used from a size of > 5/8" ensure
good shock resistance to surges caused when the
chain engages in the sprocket.
Cutting-edge tools are used to accurately stamp
the link plates with a particularly high proportion of
clear-cut surface. Combined with the grinded pins
and bushes this ensures an exceptional press fit of
the links plates. Together with the strict manufacturing
tolerances applied and the enhanced surface
strength achieved by shot peening the components,
this allows to improve the overall fatigue strength.
A wax-like initial lubricant and the default pre-stretching
of the chains with >40% of the breaking load
ensure that the initial wear is kept low.
The initial lubrication of KettenWulf roller chains is
conceived for an operating temperature range of
-30°C to +130°C. Our many years of experience and
manufacturing options in the field of conveyor chains
allow us to produce roller chains which are larger
than 80B. Please don’t hesitate to contact us.
KW roller chain
1 Wear-optimised
pins, case-hardened
2 Seamless, cold-
extruded bushes
3 Seamless, case-hardened
rollers for high
wear resistance
4 Ball-blasted
link plates, quenched
and tempered
KW roller chains
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