4.2.3 TTUP Top Chain
Top Chain: Engineered plastic for curved conveyance
Bottling, canning, and general uses
One or more strands of TTUP Top Chains are used for conveying or accumulating objects that are easily scratched, for example, bottles, cans, and finely machined parts.
Construction and Features
- TTUP Top Chain is based on engineered plastic TP Top Chain, Type II, but it has extra side-flexing capability. It can curve around corners with minimum radius (R) of 600 mm. This is accomplished with tapered knuckles.
- There are no float-prevention tabs on links of TTUP Top Chain (Figure 4.6).
- Tables 4.6 and 4.7 show the main functions and available top plate widths for different chain series.
Figure 4.6 TTUP Top Chain
|Chain Pitch (mm)||Bushing Diameter (mm)||Maximum Allowable Load (kN)||Sprocket||Outer Diameter of Idler Wheel|
|Number of Teeth||P.C.D.||Steel||Plastic|
|Top Plate Width (mm)||Standard||Low- Friction||Heat- Resistant||Anti Chemical||Electro- conductive||Plastic Pin|
An engineered plastic idler pulley may be substituted for the sprocket at the tail shaft. The idler pulley rotates freely, without bearings, on the fixed steel shaft.
NOTE: Excessive chain tension can damage the idler pulley.
Selection and Handling
The main difference between TTUP and TPU Top Chain is that TTUP does not have float-prevention tabs. Therefore, TTUP may be more easily detached from guide rails.