C
LEAR
P
ATH
U
SER
M
ANUAL
R
EV
.
1.97
95
shafts. For a white paper on the topic of shaft alignment, click
here
.
• Use lightweight components. Aluminum couplings,
lower inertia is preferable because it allows the motor (and
ning a
re the shaft.
• Tip: Couplings, pulleys and pinions with circumferential
clamping mechanisms tend not to damage motor shaft, hold
better, and are easier to replace than those that use set screws.
performance,
ted
• Don’t over tighten belts. Always read the belt
arPath
n-
ciprocating, precision
positioning motion applications.
ations where
al
• Avoid direct loads. In general, ClearPath motors are not
designed for connection to direct loads (e.g. direct connection to
a grinding wheel). However, direct connection may make sense
if the load is of low-mass and balanced, as with small mirrors
for laser applications.
pinions, and pulleys add significantly less inertia to the motion
system than steel parts of the same size. In most applications,
attached mechanics) to accelerate harder and move and settle
faster.
• Avoid using set screws. Coupling devices with set screws are
prone to failure and often become the weak link when joi
motor to a load. Set screws deform the metal around the
screw’s point of contact, often resulting in a raised bur on the
shaft that can make it hard to remove and replace the coupling
element. Set screws also tend to slip and sco
• Clamp close to the motor. For maximum
secure pulleys and pinions as close to the motor face as
practical. This effectively reduces the lever arm (and associa
bearing load) for applications with a side load.
manufacturer’s guidelines for proper belt tension, but never
exceed the ClearPath specification for maximum side load.
Overly tight belts put undue stress on the motor shaft and
bearing systems that can result in premature bearing and shaft
failure.
• Avoid using shaft keys when possible. Although Cle
includes a keyway feature on the shaft, Teknic does not
generally recommend the use of keys. Keys tend to cause ru
out and backlash errors, particularly in re
• Note: Keys should be considered for use in applic
coupling slip could result in a dangerous or hazardous
condition. Also, key use may be appropriate for unidirection
applications (where the motor always spins in the same
direction) as these applications are less prone to key-related
lash problems.
T
EKNIC
,
I
NC
.
F
AX
(585)784-7460
V
OICE
(585)784-7454
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