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MIL-DTL-81963 Servocomponents, Precision Instrument, Rotating, Common Requirements And Tests, General Specification ForThis specification covers common requirements and tests for analog, digital and analog/digital precision instrument rotating servocomponents \(synchros, electrical resolvers, electrical, linear resolvers, transolvers, shaft angle encoders, servomotors, tachometer-generators, servomotor-tachometer generators, stepping motors, and gear heads\). This specification will be used with the applicable general specification, which covers a particular class of servocomponents \(for example, synchros\), together with the documents and the specification sheet that cite MIL-DTL-81963 as a direct reference detailing the specific requirement for the individual servocomponent.

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MIL-DTL-81963C

10-32UNF-2B

X .75 DEEP 3 HOLES

SUPPORT

8 - 32 UNC - 2A W/NUT

.150 � CLEARANCE HOLE

6.875

IN BASE (4 PLACES)

PLATE

BASE

45�

.25

.375

.75

.25

.75

4.625

3.12

.150 � THRU BASE

9.00

COUNTERSINK TO

8 - 32 UNC - 2B X .38 DEEP

.284 � ( 2 HOLES )

IN BASE ( 2 PLACES)

BASE AND SUPPORT

.150 � CLEARANCE HOLE THRU SUPPORT

MATERIAL: LAMINATED PHENOLIC

COUNTERSINK TO .284 � (4 PLACES)

Inches

0.150

3.81

0.250

6.35

0.284

7.21

0.375

9.53

0.750

19.04

3.120

79.25

4.625

117.48

6.875

174.63

9.000

228.60

NOTES:

1. Dimensions are in inches. Metric equivalents are given for general information only.

2. Unless otherwise specified, tolerances shall be:

2 place decimals � .02

3 place decimals + .010 -.000

3. Three (3) threaded holes equally spaced on a diameter appropriate for the mounting hardware

used.

4. Mounting hardware clamp assembly, as specified in MS17183 or equivalent, dimensioned for the

particular servocomponent.

FIGURE 15. Structureborne noise test fixture - Continued.