Page 5
STEP 6: SLIDE ENCODER ON SHAFT
Carefully slide the encoder all the way down until the tether rests on
the motor face without any stress on the tether. Do not tighten the
shaft clamp on the encoder yet
STEP 7A: SECURE TETHER TO MOUNTING FACE (MOTOR
MOUNT)
Rotate the tether arm until it is at the correct orientation and is aligned
with the mounting holes on the the motor or equipment. Install one
steel washer on both sides of the nylon washer. Fasten the tether arm
to the motor or machine housing using the supplied 3/8” bolt (4.5” C-
face applications) or 1/2” bolt (8.5” C-face applications). Ensure that
there is no stress or flexing of the tether arm when secured.
STEP 7B: SECURE TETHER TO MOUNTING FACE (FAN COVER
MOUNT)
Slide and insert the T-bolt as shown in the figure into the fan cover.
Use the supplied insulating hardware and washers as shown. Tighten
the jamnut to firmly secure the tether.
STEP 8: TIGHTEN ENCODER CLAMP ONTO MATING SHAFT
Check to make sure that the tether is still in its “unstressed” condi-
tion. Adjust position of encoder on shaft if necessary and then tighten
the shaft clamp on the encoder. Tighten clamp to stated torque value
provided on encoder datasheet (50-55 in-lbs.).
NOTE: ENCODER MODELS WITH SPLIT CLAMPS HAVE TWO SCREWS
TO TIGHTEN DOWN. PLEASE ENSURE THAT BOTH SCREWS ON THE
CLAMP ARE TIGHTENED DOWN SECURELY. YOU MAY HAVE TO RO-
TATE THE SHAFT TO TIGHTEN BOTH SCREWS DOWN.
STEP 9: GOOD INSTALLATION CHECK POINT
Follow the 3 step installation check to ensure a good installation thus
far. Refer to figure above for key reference dimensions
A. Check clearances from mounting face.
Ensure you have a
minimum clearance of 1/16” between the encoder shaft and any non-
rotating surface closest to the encoder shaft
B. Check tether installation.
Make sure that the tether is unstressed.
There should be no visible bending or deflection on any surface of the
tether. Visible tether deflections should be corrected immediately. If
the tether is bent or distorted, DO NOT USE, and call the factory for a
replacement tether. Tether installation is critical to the long life of the
bearings and improper tether installation will lead to excessive bear-
ing loads and encoder failure.
C. Check wobble of encoder housing.
Turn the shaft by hand and
make sure that the shaft turns freely and does not produce excessive
runout/wobble of the encoder. Most encoder installations will have
wobble arising from shaft tolerances. Measure the wobble on the
visible back face of the encoder. A wobble of less than 0.007” TIR will
not have any adverse effect on encoder performance. In general, the
lower the TIR of runout, the better.
"C"SIZE
TOLERANCES UNLESS
INDICATED:
C D.T.C.
TITLE
DRAWING NUMBER
UL
RoHS
REACH
CE
CSA
TUV
ATEX
TM
27-DEC-2019
HT55_MOUNT
1 OF 2
-
RELEASED:
DATE:
/
/
SHEET REV
CHECKED:
DATE:
APPLICATION:
27-DEC-2019
PRO/E MODEL: HT55_MOUNT
.005
.01
1/4
DRAWN:
DATE:
X
X
FINISH:
HT55_MOUNT
1:4
.XXX
.XX
ANGLES
FILE NAME:
SCALE:
COMPLIANCE REQUIRED
MATERIAL:
UNITS: INCH
REV
ECN
DATE
APPROVED
MOUNTING HOLE
FLAT STEEL WASHER
FLAT NYLON WASHER
FLANGED NYLON WASHER
FLAT STEEL WASHER
HEX BOLT
MOUNTING FACE OF MOTOR
TETHER
