R. Visconde de Parnaíba, 2482 - Brás - 03044-002 - São Paulo SP Brazil
Phone: (5511) 2692-9717 Fax: (5511) 2695-1988 - info@jfperaita.com.br

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22	Worm gear pair to be used at aerospacial industry, technical information can not be published Worm Material: Titanium 30Rc Worm wheel material: Aluminium
Worm material SAE 1045 Module = Circular Pitch 5/8" Number of starts = 2 right hand Pressure angle = 20° Helical angle = 16°58'51" right hand Pitch diameter = 1.8750 in. Outside diameter = 2.2729 in.	18
20	Worm material SAE 8620 carburized with 60Rc Module = 6.50mm / DP 3.9077 Number of starts = 3 right hand Pressure angle = 20° Helical angle = 16°08'59" right hand Pitch diameter = 3.2677 in. Outside diameter = 3.2677 in.
Worm material 8640 43/47 Rc Wormwheel material: Centrifugal bronze ASTM 271 (Al) Center distance = 12.4929 in. Number of teeths = 54 Number of starts = 3 right hand Pressure angle = 25° Helical angle = 18°49'54" right hand   Outside Diameter (in) Pitch Diameter (in) Wormwheel 22.2815 21.4858 Worm 4.2957 3.5000	1
2	Worm material 4320 58/60 Rc Wormwheel material: Centrifugal bronze SAE65 Center distance = 1.5000 in. Number of teeths = 40 Number of starts = 4 right hand Pressure angle = 20° Helical angle = 16°41'57" right hand   Outside Diameter (in) Pitch Diameter (in) Wormwheel 2.3622 2.2500 Worm 0.8622 0.7500
Worm material 8640 43/47 Rc Wormwheel material: Centrifugal bronze SAE65 Center distance = 2.0866 in. Number of teeths = 24 Number of starts = 4 left hand Pressure angle = 20° Helical angle = 12°15'53" left hand   Outside Diameter (in) Pitch Diameter (in) Wormwheel 2.5591 2.3622 Worm 2.0079 1.8110	19
3a	Worm material 4320 58/60 Rc Wormwheel material: Centrifugal bronze BZ 12 Center distance = 4.0000 in. Number of teeths = 30 Number of starts = 5 right hand Pressure angle = 25° Helical angle = 31°56'30" right hand   Outside Diameter (in) Pitch Diameter (in) Wormwheel 6.7335 6.3126 Worm 2.1083 1.6874
Worm material 8640 28/30 Rc Wormwheel material: Centrifugal bronze SAE65 Center distance = 5.5118 in. Number of teeths = 30 Number of starts = 11 right hand Pressure angle = 25° Helical angle = 40°04'11" right hand   Outside Diameter (in) Pitch Diameter (in) Wormwheel 8.1890 7.6772 Worm 3.8583 3.3465	6

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