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GEAR TESTERS

National Broach Red Ring #GSJ-12, gear noise tester, 12" diameter, 20" centers, rare, 1950' s

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National Broach Red Ring #GSJ-12, gear noise tester, 12" diameter, 20" centers, rare, 1950' s
NATIONAL BROACH GEAR NOISE TESTER
S/N GSJ-627 YEAR:1950's
DESCRIPTION:
Red Ring sound testing machines run finished production gears in mesh at
controlled speeds in both directions of rotation both with and with-out a
brake load to ascertain the character and volume of the produced sound.
This procedure prevents gears with nicks or objectionable noise
characteristics from being assembled before corrective measures are taken.
Gear tooth contact pattern can also be observed on sound testing equipment
to help analyze causes of specific gear noise.
Red Ring sound testers have two precision spindles, a means of adjusting the
spindle and clamping for accurate center distance setting, a quit
multiple-speed power drive unit and reverse drive, a device for varying
brake loads, and provision for easy loading and unloading.
MACHINE SPECIFICATIONS:
Max. O.D. 12"
Max. Dist. between Centers 20"
No. Spindle Speeds 4
Speed Range (RPM) 750 to 2,250
ADDITIONAL FEATURES:
* Machine is also capable of Lapping
Price..............................................$$Call (Ref. #1153)

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