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Model 12

Model 12
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Catalog excerpts

Tulsa Winch A heavy duty low mount worm gear winch with a 27:1 gear ratio and an improved air-cooled safety brake — automatically engages when power is reversed or removed from winch. Manufactured from an alloy steel forging, ma- chined to close tolerances, ground journals and threads, hardened in a "controlled atmos- phere" furnace for long service life. • WORM GEAR Manufactured from the highest quality bronze alloy, accurately machined to match the worm. • SLIDING CLUTCH Manufactured from manganese alloy steel. Two jaws are matched for complete and even engage- ment with the drum clutch, with reverse draft to eliminate disengagement under load. The worm rotates on deep-groove, heavy duty, radial ball bearings which never require • PRECISION MANUFACTURED Extra long service life and trouble free operation. • NOT APPROVED FOR PERSONNEL LIFTS.

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Installation Drawings Safe Working Capacity Pounds Drum Shaft Drum Barrel Worm Gear RATED LINE PULL IN POUNDS (KILOGRAMS) PER LAYER OF CABLE Cable Size 1st Layer 2nd Layer 3rd Layer 4th Layer CABLE CAPACITY Cable Size IN FEET (METERS) Corrected for 90% Taut Cable 1st Layer 2nd Layer 3rd Layer 4th Layer 5th Layer 6th Layer Worm Angle - (Standing Behind Truck) Input Shaft Location - -Special Units Suffix Number (Units that do not appear in price book) -Design Number Cable Spool O—Over Drum U—Under Drum X—Less Brake Tulsa Winch

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