Screw-tip-sets

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The screw-tip-set is the heart of the plasticising unit. 

Screw-tip-sets must close safely and should allow a constant mass cushion in order to guarantee high repeatability to ensure even dosing.

There are no good or bad screw-tip-sets, only suitable and unsuitable ones. Screw-tip-sets by Groche aim to achieve minimal wear and a long service life.

High wear resistant
Corrosion resistant
Special geometries
Extensive stock
Optimised coating

Our qualities

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SCREW-TIP-SETS

The three part standard screw-tip-set – a good compromise.

3-part screw-tip-set

The three part standard screw-tip-set – a good compromise.
Shuts off quickly and has a high wear resistance due to specialised geometry.

VKS screw-tip-set

Shuts off quickly and has a high wear resistance due to specialised geometry.
The 2-wing screw-tip-set has a big flow-cross-section diameter for fast dosing.

2-wing screw-tip-set

The 2-wing screw-tip-set has a big flow-cross-section diameter for fast dosing.
The ball screw-tip-set shuts off more evenly but reduc-
es the flow-cross-section. Suitable for plastics with low viscosity. Available from Ø 45.

Central ball screw-tip-set type I

The ball screw-tip-set shuts off more evenly but reduc- es the flow-cross-section. Suitable for plastics with low viscosity. Available from Ø 45.
The ball screw-tip-set shuts off more evenly but reduc- es the flow-cross-section. Suitable for plastics with low viscosity.

Central ball screw-tip-set type II

The ball screw-tip-set shuts off more evenly but reduc- es the flow-cross-section. Suitable for plastics with low viscosity.
The diagonal screw-tip-set shuts off more evenly but re- duces the flow-cross-section. Suitable for plastics with low viscosity.

Diagonal ball screw-tip-set

The diagonal screw-tip-set shuts off more evenly but re- duces the flow-cross-section. Suitable for plastics with low viscosity.
The balls work like bearings. Suitable for unfilled plastics.

Multiple ball screw-tip-set

The balls work like bearings. Suitable for unfilled plastics.
Minimises the risk of breakage for moist polyester and other highly viscous plastics.

Screw tip-set for moist polyester (BMC)

Minimises the risk of breakage for moist polyester and other highly viscous plastics.
The claws of the screw-tip-set guarantee a precise injection.

Castle screw-tip-set

The claws of the screw-tip-set guarantee a precise injection.
The Lawson screw-tip-set has a large flow-cross-section with a locked valve ring for fast dosing.

Lawson screw-tip-set

The Lawson screw-tip-set has a large flow-cross-section with a locked valve ring for fast dosing.
A additional pilot-ring enables the screw-tip-set to be closed quickly.

4-part screw-tip-set

A additional pilot-ring enables the screw-tip-set to be closed quickly.
The usual screw-tip,with/without flight.

PVC screw-tip with/without screw flight

The usual screw-tip,with/without flight.
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