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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
C
.44
C/2
.22
8-32 UNC-2B X .25 DEEP
(2 PLACES)
Ø A THRU
X
C
A
B
D
+
+
C/2
Ø B .188 DEEP
.188
SEE NOTE 3
PLATE
MATERIAL: 7/16" STOCK ALUMINUM
ALLOY, ASTM 209
FINISH: ANODIZE PER MIL-A-8625,
TYPE II, CLASS 2 BLACK
.50
PLATE
x
F
SUPPORT
BASE
+
+
45°
J
H/2
H
.25
E
K
.44
H
(SEE NOTE 5)
G
8-32 UNC-2B X .25 DEEP
IN BASE (2 PLACES)
.150 Ø CLEARANCE HOLE THRU SUPPORT
BASE AND SUPPORT
MATERIAL: LAMINATED PHENOLIC COUNTERSINK TO .284 Ø (4 PLACES)
Table of lettered dimensions
SIZE
A
B
C
D
E
F
G
H
J
K
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
23
2.001
2.260
6.00
4.75
4.875
6.892
9.00
0.75
0.25
1.00
(50.83)
(57.40)
(152.4)
(120.7)
(123.8)
(175.1)
(228.6)
(19.05)
(6.35)
(25.4)
31
2.751
3.110
8.25
4.75
4.875
6.892
9.00
0.75
0.25
1.00
(69.88)
(78.99)
(209.6)
(120.7)
(123.8)
(175.1)
(228.6)
(19.05)
(6.35)
(25.4)
37
3.376
3.635
10.12
9.75
10.250
14.495
20.00
2.00
0.50
2.00
(85.75)
(92.33)
(257.0)
(247.7)
(260.4)
(368.2)
(508.0)
50.8)
(12.7)
(50.8)
FIGURE 4. Standard test fixture for servocomponents size 23 and larger.
31



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