Applications
Guide Roller Attachment
Type Guide
HPwith guide Curved chain Threaded
Extended pin Stay-pin.
roller.
roller.
with guide extended
with clip.
roller.
pin.
Symbol
GR
HP-GR
CU-GR
EN
EC
ST
Spec
Thread for tool
Install tool attachment with clips.
Suitable for conveying on the pins.
Guide roller prevents meandering.
attachment with nuts.
Free Flow Chain
Type Double
Top roller
OBR with
strand
with guide attachment
top roller.
attachment.
guide.
Symbol
TR
TG
SG
Spec Wide-top
For longer
For longer
roller width.
conveyor line. conveyor line.
Figure 2.31 (ii) Other Types of Attachments
2.5 Special Attachments These made-to-order products require careful consideration. Should a manufacturer supply them, or should you make them in house? Here are some points to weigh: High Accuracy The most common requirement is the height from the guide rail to the upper edge of the A or K attachment. The “ground upper surface” type of Plus α Alpha attachments has high accuracy. The tolerance is approximately 0.2 mm, depending on the chain size and manufacturer. For standard attachments, the tolerance range is wider: about two to three times that of the Plus α Alpha attachments. During normal service, the chain will wear, and the height will change.
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