Flintec 52-18SS - Manual (Page 5)

5
Principle of Sliding System
The Sliding System is based on loading pins fitted with Teflon (PTFE) sliding plates sliding against Stainless Steel
Sheets with very smooth surface (Surface finish 2B). This surface combination gives a very low friction coefficient
(typ < 5-6%). It allows length changes of the load carrier to take place, without causing any considerable
horizontal forces between the load cells.
Figure 5. Type 52-18SS Variants with bumpers, without bumpers, resp. with fixed pin.
Movement of the load carrier is restricted by bumpers acting against the loading end of the load cell.
A module can have 1, 2 or 3 bumpers, or no bumpers at all. It can also have a “fixed loading pin” which acts as a
360˚ bumper.
These variants make possible a large number of bumper combinations. Which variant is the optimal choice
depends on the actual application. One combination which works well for most types of load carriers is: “one
fixed pin module, one module with 2 bumpers and all other weigh modules free sliding”.
The Sliding System is perfect for applications which
exhibit very large temperature expansions.
Figure 6 illustrates that that the top plate of a 50kN
module can be positioned offset, by as much as
15 mm and still function. This also means that the
centering of the sliding modules during installation is
not very critical.
Figure 6. Top plate of -50kN module, shown offset by 15 mm.
Figure 7. This figure shows some typical examples on how to orient the Sliding System weigh modules.