800.727.5646 atcdigitec.com Digitec Division 758-KB Series Tachometer/Generator // 758-KB Series 337 The 758 Series of tachometers all use a multi-pole cylindrical magnet turning in a wound stator constructed from quality transformer iron lamination. Single phase output current is a sine wave over the speed range of the tachometer. These units have 100 ohm stators and are intended for voltage responsive systems. When greater accuracy is required, use a tachometer having a 32 ohm stator (designation F in the type number) and a frequency responsive indicating system. For speeds over 5,000 rpm, use the bearingless AC generators. Square aluminum mounting pad with a dust proof aluminum alloy housing and 1/4" square drive dog. Mounting pad in accordance with military drawing AND 20005. Two binding posts for electrical connections. Approximate torque: 2.0 oz. in. starting, 2.0 oz. in. running (1000 rpm). Type KB6 same as Type KB3 except method of electrical connection. Instead of binding posts, generator has a binding post cover box and an AN plug connector type AND 10066-12S-3P: The mating socket connector is an AN 3106-12S-3S (not supplied). Type KB30—Same as Type KB3, but with a 3/16" square drive dog. Designed to operate only within protected environments. Pad Mo u nt e d ( A N ) T a c h o m e t er 2.460 (±.101) 2.460 (±.101) 1.39 .85 (±.02) (±.02) 2.82" (±0.01) Dia. NO 10 32 NF 2ATHD .70" (±.01) .70" (±.01) 2.03(±.02) 473 REF. .25 REF. .090 (±.005) .47" (±.05) .250 (±.100 000) .281" 4 HOLES .281"R 1.498" (±.010) (±.000 .002) Dia. .937" (-.005) .937" (-.005) .937" (-.005) .937" (-.005) (±.002) .001 BINDING POST COVER BOX \\\DIMENSIONS (INCHES/MILLIMETERS) \\\SPECIFICATIONS VOLTAGE OUTPUT AT 1000 RPM 10 Volts AC ±1% Per 1000 RPM Open Circuit ACCURACY ±1% EMF LINEARITY Dependent Upon Load and Speed PERMISSIBLE CURRENT DRAIN 150 mA FREQUENCY AT 900 RPM 60 Hz Sine Wave ALLOWABLE END PLAY 0.005" MAX OPERATING TEMPERATURE 250°F INTERNAL RESISTANCE AT 25°C Standard Unit 100 100 ½ ±1% F. Type Unit* 32 ½ ±20% INSULATION Insulation Class 105 ROTOR Alnico V, 8 Poles STATOR 8 Poles BEARINGS Ball TEMPERATURE COEFFICIENT Standard Unit 0.2% Per 10°C Change F. Type Unit* Not Compensated, 0.4% Per 10°C Change MIN. SPEED 500 RPM MAX. TOP SPEED 5000 RPM STARTING TORQUE 2.0-3.0 oz. ins. RUNNING TORQUE AT 1000 RPM 2.3 oz. ins. SHAFT DIAMETER 1/4" Square SHAFT CONNECTION Direct SHAFT LENGTH .47" ELECTRICAL CONNECTION KB3 10-32 Studs KB6 AN Plug Connection MOUNTING Sq. AN Pad ENCLOSURE Dust Resistant MEASUREMENTS KB3 4.74"L x 2.82"H x 2.82"W KB6 5.11"L x 3.38"H x 2.82"W WEIGHT KB3 2.5 Ibs. Approximate KB6 2.6 lbs. Approximate *F-Type generators for use in frequency responsive systems only. any of the above types can be supplied for use in frequency systems \\\ORDERING INFORMATION MODEL NUMBER DESCRIPTION 758-9907000 758 Type KB3 Tachometer for Voltage-Responsive Systems 758-9911000 758 Type KBF3 Tachometer for Frequency-Responsive Systems 758-9908000 758 Type KB6 Tachometer for Voltage-Responsive Systems 0136522-902 758 Type KBF6 Tachometer for Frequency-Responsive Systems 0134277-901 758 Type KB30 Tachometer for Voltage-Responsive Systems 0134277-903 758 Type KBF30 Tachometer for Frequency-Responsive Systems ACCESSORIES AN3106-12S-3S Mating Socket Connector