Chain/Sprocket, Raised Floor System, Building Constructional Component
Chain/Sprocket, Raised Floor System, Building Constructional Component
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| Attachment | Cutting and Joining | Lubrication (Oiling) |
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| Maintainance and Inspection | Identifying and Correcting Problems | Selection of Transmission Roller Chain |
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Incorrect sprocket attachment can have a major impact on the smooth operation of the roller chain, and can cause eccentric load on the chains, greatly shortening their service life. The general attachment and alignment methods and allowable values are presented below.
How to Align Sprockets |
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(1) Parallelism of Shafts and Allowable Tolerance
(A-B)/L in right figure must be adjusted to keep +-(1/300). Straight edge can be used to measure relatively short center distance, while tape measure can be used for longer distance.
(2) Align Sprocket and Allowable Tolerance
Clearance (a) in right figure must be adjusted to allowable level shown in below table,by measuring with straight edge on machined side teeth surfaces of paired sprockets.
If center distance is too long, measure with piano wire, revolving sprockets to get consistent value.
Allowable Tolerance for Sprockets Alignment
How to Install Roller Chain |
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Roller chains don't need initial tensioning which belts needs.
Appropriate chain slack (h) generally is 4% of center distance (l).
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Shaft Positioning and Tension |
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Recommendable center distance for (1) A, B, C, is less than 30 ~ 50 times of chain pitch. (in the case speed is not constant, less than 20 times) |
