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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

.040

0.0625

0-80 UNF-2B

0-80 UNF-2A

Developed

Dimensions of mounted

Weight

Mounting

torque

� 3 percent

radius

dial weights

oz-in

Inch

ounces

Inch (mm)

(mm)

.02

.062

.262

.078

.033

.600 (15.24)

(1.57)

(6.65)

(1.98)

.03

.062

.325

.078

.050

.600 (15.24)

(1.57)

(8.26)

(1.98)

.04

.157

.242

.171

.067

.600 (15.24)

(3.99)

(6.15)

(4.34)

.05

.150

.267

.171

.083

.600 (15.24)

(3.81)

(6.78)

(4.34)

.06

.125

.324

.141

.100

.600 (15.24)

(3.175)

(8.23)

(3.58)

.07

.125

.346

.141

.117

.600 (15.24)

(3.175)

(8.79)

(3.58)

.08

.125

.373

.141

.133

.600 (15.24)

(3.175)

(9.47)

(3.58)

.09

.236

.288

.250

.150

.600 (15.24)

(5.99)

(7.32)

(6.35)

.10

.236

.300

.250

.166

.600 (15.24)

(5.99)

(7.62)

(6.35)

.20

.351

.350

.250

.333

.600 (15.24)

(8.92)

(8.89)

(6.35)

.50

.180

.597

.203

.500

1.000 (25.4)

(4.57)

(15.16)

(5.16)

NOTES:

1. Unless otherwise specified, dimensions are in inches. Tolerances shall be:

� .005 inch on decimals.

� 1 degrees on angles.

Metric equivalents are given for general information only.

2. Material: Brass, ASTM B21/B21M, copper alloy, UNS C46200

3. This table contains examples of torque developed; other values may be obtained as required.

FIGURE 6. Weights for mechanical breakaway torque tests.