Screws for hollow core slab extruders: a reliable basis for floor hollow core slab production
Screws for hollow core slab extruders are a key component without which it is impossible to form hollow floor slabs consistently. They ensure uniform distribution of concrete mix under high pressure, creating conditions for precise product geometry and high strength. At the same time, screws are constantly subjected to significant loads, which makes them one of the most vulnerable elements of the extruder and requires scheduled replacement.
Design and technical features
An extruder screw is a helical working part that converts rotary motion into translational motion, advancing and processing the concrete mix. Its efficiency depends on a number of parameters: diameter, length, screw pitch, groove depth, direction of rotation, and number of screws in the system. For example, the diameter determines not only the productivity but also the speed of mixture advancement, while the screw pitch affects the uniformity of feed.
TDM Engineering Oy manufactures screws for hollow core slab extruders from high-strength cast iron. The blanks are cast and then undergo precision machining, which ensures strength, wear resistance, and stable operation under high loads.
Practical application
Depending on the characteristics of the manufactured products — plates with a width of 0.6, 0.9, 1.0, 1.2 m, or 1.5 m — a specific screw size is selected. The catalog presents options with diameters from 70 to 600 mm:
- 70–120 mm,
- 120–220 mm,
- 200–320 mm,
- 265–500 mm,
- 320–600 mm.
This range covers all standard tasks, allowing you to choose the optimal solution for the specific parameters of the line. The higher and wider the plate, the more powerful the screw required for its correct formation.
Advantages of use
Screws for plate extruders from TDM Engineering are distinguished by:
- strength — resistance to extreme loads,
- durability — reduced replacement frequency,
- versatility — right and left versions, a wide range of diameters, adaptation to different types of plates.
The use of such screws reduces production downtime, ensures stable product quality, and saves on equipment maintenance.
A solution from professionals
When choosing screws for hollow core slab extruders, it is important to consider not only the size but also the quality of workmanship. TDM Engineering Oy offers a full range of parts manufactured to high standards. This guarantees uninterrupted equipment operation and stable production of floor hollow core slabs.
Contact the company’s specialists today and get reliable screws that will ensure efficiency, accuracy, and confidence in the results of your production.