Serco tek sealedruggedizedseries_specsheet
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This document provides specifications for various DC tachometer generator models from Servo-Tek. It includes information on model numbers, voltages, speeds, dimensions, and other technical specifications. Servo-Tek offers sealed units that are resistant to fluids as well as standard units. The generators are designed to accurately convert rotational speed to an analog voltage signal and operate reliably in various environments.
Serco tek sealedruggedizedseries_specsheet
- 1. Model Number Mounting Weight (Ap- prox) Inertia (Ap- prox) oz-in-sec2 V/1000 rpm RPM (max) Arm Resist (ohms dynamic) Armature Inductance (henrys) Outline Di- mensions Mounting Dimensions Shaft Size ST-7336A-7 Face 3.0 oz 1.32 x 10-4 2.6v 12,000 40Ω 0.024h Fig. 8 Fig. 8 .120 ST-7336A-2 Face 3.0 oz 1.32 x 10-4 7.0v 12,000 350Ω 0.18h Fig. 8 Fig. 8 .120 ST-7336B-1 Face 4.0 oz 2.27 x 10-4 20.8v 8,000 1000Ω 0.56h Fig. 8 Fig. 8 .120 ST-7337A-2 Face 3.0 oz 1.32 x 10-4 7.0v 12,000 350Ω 0.18h Fig. 8 Fig. 8 .187 ST-7337B-1 Face 4.0 oz 2.27 x 10-4 20.8v 8,000 1000Ω 0.56h Fig. 8 Fig. 8 .187 SU-7346D-1 Flange 8.5 oz 4.54 x 10-4 45v 5,000 1750Ω 1.00h Fig. 8 Fig. 5 .187 Sealed DC Tachometers 1 to 45 volts/1000 rpm Servo-Tek’s Ruggedized PY Alternative (Up to 50 volts) Sealed Generator Specifications Ruggedized PY Alternatives Servo-Tek ruggedized DC tachometer generators are designed with sturdy aluminum housings and strong mounting flanges. Other features offered include extra-heavy armature shafts and bearings. The mechanical flexibility of the ST-13212 allows for the internal tachometer to be repaired or replaced, without having to replace the expensive anodized casting. The ST-13212 supplies outputs from 2.6 to 50v/1000 rpm and runs at speeds up to 5000 rpm. The shaft size is 5/16” in diameter. The ST-12970 comes equipped with a silicone rubber coupling. It allows the unit to be driven by a motor shaft with 0.167” wide slot. The ST-12970 is also available with outputs up to 24v/1000 rpm and designed to run at high speeds. Maximum Driving Torque for sealed units is 0.7 oz-in Most units listed above are normally in stock SERVO-TEK ® DC Tachometer Generators Sealed Units Servo-Tek manufactures a complete line of sealed units which are resistant against the harmful effects of fluids. These units employ a one-piece housing, a special shaft seal, and a form-fitted rubber boot on the terminal end. Servo-Tek sealed units meet electrical specifications after storage at 49ºC with 95% relative humidity for 24 hours. These units are capable of enduring vibration with amplitudes up to 0.03” total excursion at frequencies from 4 Hz to 55 Hz in each of three mutually perpendicular axes with no evidence of physical damage. These units are available with a low ripple output up to 30v/1000 rpm. ST-7337A-2N and ST-7337B-1 ST-13212 and ST-12970 ELECTROMATE Toll Free Phone (877) SERVO98 Toll Free Fax (877) SERV099 www.electromate.com sales@electromate.com Sold & Serviced By:
- 2. Model # “L” “F” “P” “N” “S” XX-740A 1.701 OMIT OMIT OMIT 0.120 ± .001 XX-740B 2.138 OMIT OMIT OMIT 0.120 ± .001 XX-780B 2.193 0.375 0.062 0.157 0.187 ± .001 XX-780D 3.253 0.375 0.062 0.157 0.187 ± .001 XX-797A 1.701 0.187 0.187 0.110 0.120 ± .001 XX-7103A 1.756 0.375 0.062 0.157 0.187 ± .001 XX-7107D 3.253 OMIT OMIT OMIT 0.187 ± .001 XX-7123A 1.756 OMIT OMIT OMIT 0.187 ± .001 XX-7123B 2.193 OMIT OMIT OMIT 0.187 ± .001 XX-7356F 1.701 OMIT OMIT OMIT 0.120 ± .001 XX-7360F 1.756 0.375 0.062 0.157 0.187 ± .001 Model # “L” “F” “P” “N” XX-757A 2.240 0.375 0.062 0.157 XX-757B 2.677 0.375 0.062 0.157 XX-796B 2.677 OMIT OMIT OMIT XX-7483H 2.677 0.375 0.062 0.157 Model # “T” “L” “E” “S” SS-779E 1.687 1.479 0.375 ± .015 0.120 ± .0005 SS-7251E 1.687 1.479 0.562 ± .015 0.187 ± .0002 Model “L” “F” “P” “N” “S” ST-7336A 1.867 OMIT OMIT OMIT 0.120 ± .001 ST-7336B 2.304 OMIT OMIT OMIT 0.120 ± .001 ST-7337A 1.875 0.375 0.062 0.157 0.187 ± .001 ST-7337B 2.312 0.375 0.062 0.157 0.187 ± .001 Model “L” “E” “F” “N” “S” XX-7114B 2.193 0.562 0.437 0.157 0.187 ± .001 XX-7114D 3.253 0.562 0.437 0.157 0.187 ± .001 XX-7146A 1.701 0.562 0.437 0.110 0.120 ± .001 Model # “L” SM-762A 2.520 SM-762B 2.957 Figure 10 Instrument/Industrial Configuration Figure 11 Industrial Configuration Figure 8 Sealed ConfigurationFigure 7 Aircraft Configuration Figure 12 E-Series Tachometers Figure 9 Flat Shaft Configuration Figure 1 SA Face Mount Figure 2 SB Flange Mount Figure 3 SD Modified Synchro Figure 4 SM Aircraft Mount Figure 5 SU Large Flange Mount Figure 6 SS Synchro Mount Mounting and Outline Dimensions ELECTROMATE Toll Free Phone (877) SERVO98 Toll Free Fax (877) SERV099 www.electromate.com sales@electromate.com Sold & Serviced By:
- 3. Technical Data An Industry Standard for over fifty years. Servo-Tek DC tachometer generators provide a convenient and economical means of converting rotational speed into an isolated analog voltage signal suitable for remote indication and control. While this catalog contains information on our most popular models, we also manufacture countless specials. Construction Most of our DC generators are housed in aluminum casings protected in accordance with Mil-C-5541 or Mil-A-8625 or high performance plastics. Alnico permanent magnets are used. Armature shafts are stainless-steel, and rotate on fully-shielded stainless-steel ball bearings. Commutators are manufactured from an alloy containing at least 90% silver. Armature laminations are wound with Isomid insulated wire, over Teflon slot insulation. The entire armature is then baked, resulting in a NEMA Class H insulation system. Linearity Linearity at any speed is better than 0.1% of the output at that rpm. Bidirectional Operation All Servo-Tek DC tachometer generators operate in either rotational direction. That direction can be determined by output voltage polarity. Output (in either direction) is held to a tolerance of 0.25% of the average output. DC Tachometer Generators Stability Optimum brush and commutator combination gives 0.1% stability. Highly stable output gives no evidence of long-term drift. Breakdown Voltage Servo-Tek DC tachometer generators are factory tested with an ac potential of 1250 volts rms applied for one second between (either) terminal and shaft. E-Series units are tested with 500 volts. Temperature Range Most of our units are designed for continuous operation in ambient temperatures ranging from -55ºC to +100ºC. Voltage output at 25ºC will not deviate by more than 0.01% per degree of change within the range of -20ºC to +75ºC. All units are temperature compensated, with the exception of D-Series and E-Series units. Ripple The ripple rms value will not exceed 3% of the DC value at any speed in excess of 40 rpm on standard units. On the low ripple units, the ripple rms value will not exceed 1.5% of the DC value. A peak to peak ripple of 1.5% is available on some models. Brush Life Brushes and commutators are matched for long life and stability. SERVO-TEK ® ELECTROMATE Toll Free Phone (877) SERVO98 Toll Free Fax (877) SERV099 www.electromate.com sales@electromate.com Sold & Serviced By: