2 - 1 Guide Rail The guide rail consists of the conveyor frame and liner. The liner sider with the top chain to minimize frictional resistance and wear so the chains are protected and driving power can be minimized.
2 - 3 Slack side guide rail arrangement
2 - 2 Location of guide rails and sprocket When the chain engages the sprocket, the chain itself moves up and down slightly due to the polygonal of the sprocket. Therefore, the guide rail on the loaded side must be positioned so that the chain is horizontal when at the highest level. Guide rail installa- tion dimension “A” is determined from the following equation. A = (Pitch diameter of sprocket/2) + B (inch)
Chain Type
B
C
TS, TRU, TKU, TN, TNU
0.433 0.157 0.197 0.157
TT, TTU
1.496
TP-I
TP-11, TPU, TTP, TTPF
2 - 4 Connection of additional conveyors If a conveyor is too long, the chain tension will increase and chain strength will not be sufficient. In such cases, additional conveyors should be used.
Chain Type
h
H
Guide Rail Inside Width Chain Type
TRU TPU
0.260 0.236
1.181 1.024
W
Chain Type
W
TS-P
1.300 1.594 1.772
TP
1.772 1.772 1.496
TS-SS, TS-CS
TTP
1 - Slack of 3.5 - 5.5 inches during operation is needed under the drive sprocket. 2 - Engagement angle must be more than 150° between the drive sprocket and chain. 3 - The radius R (inches) of the guide rail must be larger than the radius of chain back-bend given in the table below.
TT
TN
Type
Back-bend radius
Type
Back-bend radius
TS
13 12
2040P
18
TRU, TKU
TP, TTP, TPU
2 4 2
TT
7 5
TN, TNU
40P 60P
TTU
18
4 - Guide rails must have sloped ends to prevent interference with the chain.
Locations of the chain and the guide rail are very important for a smooth transition between conveyors. Two parallel chains must be positioned at the same height, or the output chain must be positioned slightly higher than the receiving chain. The guide rail must be shaped such that transition of goods can be accomplished smoothly.
Curved Movement Chain
Chain Type
W1
W2
W3
t1
t2
W4
W5
t3
TRU TPU TNU
1.752 1.772 1.496 1.752 1.752 1.772 1.654
1.890 1.772 1.496
1.220 1.772 1.496
0.689 0.472 0.709
0.472 0.472 0.709
1.220 1.890
1.220 1.890
0.472 0.472
TO TU
TKU TTU
1.890
1.417
0.748
0.531
1.654
271
272
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