The Complete Guide to Chain

4.2.3 TTUP Top Chain

Top Chain: Engineered plastic for curved conveyance

Application Example

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

  1. 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.
  2. There are no float-prevention tabs on links of TTUP Top Chain (Figure 4.6).
  3. 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
Figure 4.6 TTUP Top Chain

Table 4.6 TTUP Top Chain and Sprockets
Chain Pitch (mm) Bushing Diameter (mm) Maximum Allowable Load (kN) Sprocket Outer Diameter of Idler Wheel
Number of Teeth P.C.D. Steel Plastic
38.1 15.2 1.08 10 123.29 Available N/A N/A
10.5 129.26 Available Available 130
11 135.23 Available N/A 142.5
12 147.21 Available Available 154.5 (Segmented)
13 159.20 Available N/A N/A
Table 4.7 TTUP Top Chain Special Feature Availability
Top Plate Width (mm) Standard Low- Friction Heat- Resistant Anti Chemical Electro- conductive Plastic Pin
82.6 Available Available N/A Available Available Available
114.3 Available Available N/A Consult Manufacturer Available N/A
190.1 Available Available N/A Consult Manufacturer Available N/A

Available : Available


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.