9
Mounting Considerations
The HEDS-654x/HEDL-654x must be aligned with respect to the optical center (codewheel shaft) as
indicated in the following figure.
2 SCREW MOUNTING
M2.5 (2-56 UNC-2B)
2 PLCS – EQUALLY
SPACED ON
46.00 (1.811) DIA.
BOLT CIRCLE
2.62
(0.103)
24.38
(0.960)
0.25 (0.010) A
—A—
MOTOR SHAFT CENTER
ALIGNMENT BOSS
26.010/25.984
(
1.024/1.023)
5.7 (0.225) TALL MAX.
0.15 (0.006) A
17.27
(0.680)
ALIGNING PINS
2.39/2.34 DIA. – 0.76 HIGH
(0.094/0.092–0.030)
0.25 (0.010) x
15.88
(0.625)
45° CHAMFER
2 PLACES
0.15 (0.006) A
TYPICAL DIMENSIONS IN MILLIMETERS AND (INCHES).
If neither locating pins nor locating boss are available, then a centering tool supplied by Agilent can be used
(HEDS-6510).
The following figure shows how the main encoder components are organized.
Encoder Mounting and Assembly
EXPLODED VIEW
HP [ HEWLETT-PACKARD ]
