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EZ ALIGN
™
RED
PRECISION LASER ALIGNMENT OPERATING INSTRUCTIONS
PULLEY ALIGNMENT
There are three basic parameters that describe
pulley misalignment. These include vertical
angularity, horizontal angularity, and axial offset,
and may occur in any combination.
There are several pulley alignment methods. The
most common include the straightedge or string
methods, in which the straightedge or strings
must touch the two edges of each pulley face
simultaneously (four-point contact for drives with
two pulleys). The pulleys should be rotated half a
turn and checked again. Since a string can bend
around corners, it is not easy differentiating
between axial offset and horizontal angularity when
only three-point contact is made. A straightedge or
string also cannot always detect twist angle.
Vertical Angularity
Axial Offset
Horizontal Angularity
Straight-Edge Method
By contrast, the Gates EZ Align
™
units mount
magnetically to the face of most pulleys. The
transmitter unit projects a laser line onto the
reflector unit, which is magnetically attached to the
other pulley face. Alignment involves ensuring that
the transmitted and reflected laser lines match
with the respective reference lines.
Stationary Pulley
Laser Transmitter
Reflector
Movable Pulley
String Line Method
