4. Top Chains
Table 4.4 TPTop Chain and Sprockets
Bushing Diameter
Maximum Allowable Load (kN)
Sprocket
Chain Pitch
Number of Teeth
(mm)
(mm)
P.C.D. 123.29 129.26 135.23 147.21 159.20
Steel
Plastic
10
N/A
12.7 (Type I) 15.2 (Type II)
10.5
1.18 1
38.1
11 12 13
N/A
N/A
1 Refer to manufacturer’s catalog for Heat-Resistant series data.
Table 4.5 TP Top Chain Special Feature Availability
Top Plate Width (mm)
Standard Low-Friction Heat-Resistant
Anti-Chemical
Plastic Pin
76.2 82.6
N/A
N/A
N/A/
N/A/
N/A/ Consult Manufacturer N/A/ Consult Manufacturer N/A/ Consult Manufacturer
101.6
N/A/
N/A/
N/A
N/A
114.3
N/A/
N/A/
N/A
N/A
127.0
N/A/
N/A/
N/A
N/A
Note: Two symbols in one cell stand for Type I / Type II.
: Available
Sprockets For TP Type II Top Chains, use spockets for TTU type. Twelve-tooth split sprockets made of engineered plastic (P.D. 147.21) are also 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. When operating in high temperatures, use steel sprockets. If the temperature is higher than 150°C, contact the manufacturer. Chains for Special Applications RS2040P chain series, with a top plate width of 50 mm, has a pitch of 25.4 mm. This is smaller than standard Top Plate Chain, which has a pitch of 38.1 mm. With RS2040P, you can use smaller sprockets with 19 teeth (9.5 effective teeth, P.D. 78.23) and select a base material that meets the specific operating conditions, for example, electroconductive, chemical-resistant, super chemical-resistant, or heat-resistant.
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