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National Stock Number:
3020-01-239-4227
Federal Supply Class:
3020
National Item Identification Number:
012394227
Description:
GEAR CLUSTER
Detail:
A cylindrical item having a full 360 degree (6.282 radians) complement of teeth on two or more surfaces. It may be a one-piece casting or composed of two or more separate items firmly held together by welding, rivets, pins, or the like, to form a single unit. It is designed to mount on a shaft. For items consisting of a shaft with an integral complement(s) or gear teeth, see GEARSHAFT (as modified). Excludes GEAR SUBASSEMBLY, SPEED DECREASER.
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Manufacturer Information:
| 014304-501 | 59027 | MEGGITT DEFENSE SYSTEMS, INC. DBA MEGGITT WESTERN DESIGN | | 014304-501 | 62228 | MEGGITT DEFENSE SYSTEMS, INC. |
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Techincal Specification:
| ATTACHMENT METHOD | MOUNTING HOLE | | BORE NOMINAL DIAMETER | 1.162 INCHES FIRST END | | BORE NOMINAL DIAMETER | 1.3115 INCHES SECOND END | | BORE STYLE | PLAIN BOTH ENDS | | CONSTRUCTION | SOLID | | DESIGN TYPE | SPUR ALL GEARS | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4140 OVERALL | | NOMINAL OUTSIDE DIAMETER | 1.917 INCHES FIRST GEAR | | NOMINAL OUTSIDE DIAMETER | 3.169 INCHES SECOND GEAR | | NOMINAL OVERALL LENGTH | 0.750 INCHES | | SPECIAL FEATURES | 3 HOLES 0.169 IN. DIA.; 1 HOLE 0.410 IN. DIA.; HEAT TREAT TO RC31-36 PER MIL-H-6875(140-160 KSI TENSILE STRENGTH); GEAR NO. 1 DATA: TOOTH FORM=FULLDEPTH,NO. OF TEETH=21,DIAMETRAL PITCH=1.2,PITCH DIA.=1.7500,PRESSURE ANGLE=20 DEG.,ADDENDUM=0.0833,ROOT DIA.=1.542,MAX. TOOTH THK.=0.1289,PIN DIA.=0.1440,TESTING PRESSURE(OZ)=29-35,CENTER DISTANCE RADIUS=0.8739,MAX. TOOTH-TOOTH COMPOSITE ERROR=0.00146,MAX. TOTAL COMPOSITE ERROR=0.00351,NO. OF TEETH MATING GEAR=70; GEAR NO. 2 DATA: TOOTH FORM=FULL DEPTH,NO. OF TEETH=21,DIAMETRALPITCH=7.257,PITCH DIA.=2.8937,PRESSUREANGLE=20 DEG.,ADDENDUM=0.1378,ROOT DIA.=2.549,MAX. TOOTH THK.=0.2145,PIN DIA.=0.24686,TESTING PRESSURE(OZ)=33-39,MAX. TOOTH-TOOTH COMPOSITE ERROR=0.00170,MAX. TOTAL COMPOSITE ERROR=0.00569,NO. OF TEETH MATING GEAR=28,NOMINAL CENTER DISTANCE=3.3759 | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | OXIDE OVERALL |
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