Technical Data
Drive Con gurations
The following are permissible con gurations for roller chain
drives:
Horizontal Drives
A. Slack adjusted. Generally the slack is on the bottom
side.
B. When the chain slack is on the upper side, a chain
tensioner is used.
C. For short center distances (less than 20 pitches) shaft
centers may be adjustable
D. A chain tensioner is required when center distances
are long (greater than 50 pitches).
Inclined Drives
E. Inclined operation should be no greater than 60
without a chain tensioner.
F.
A tensioner is required if too much slack causes the
chain to fall off the large sprocket at the bottom.
Vertical Drives
G. When the large sprocket is on the bottom, a chain
tensioner is suggested so that the chain does not fall
off the sprocket.
H. When the small sprocket is on the bottom use of a
chain tensioner is required.
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