HYSTERESIS DYNAMOMETERS MAGTROL offers 3 types of dynamometer brakes to absorb load: Hysteresis (HD  Series), Eddy-Current (WB Series) and Magnetic Powder (PB Series). Each type of Dynamometer has advantages and limitations and choosing the correct one will depend largely on the type of testing to be performed. With over 50 standard models to choose from, Magtrol Sales professionals are readily available to assist in selecting the proper Dynamometer to meet your testing needs. FEATURES ▪ 16 Standard Models with Maximum Torque from 2.5 oz·in to 500 lb·in (18 mN·m to 56.5 N·m) ▪ 14 High Speed Models Available ▪ Hysteresis Braking System: provides precise torque loading independent of shaft speed ▪ Motor Testing: from no load to locked rotor ▪ Standard Torque Units SI (English & Metric available upon request) ▪ Accuracy: ± 0.25 % (full scale) ▪ Air Flow Sensor: For protection against overheating and operator error ▪ Base Plates: available in long or short versions ▪ Custom Dynamometers: for special torque and speed requirements Hysteresis Brake Dynamometers (HD Series) are versatile and ideal for testing in the low to medium power range (maximum 14  kW intermittent duty). With a Hysteresis Braking system, the Dynamometers do not require speed to create torque, and therefore can provide a full motor ramp from free-run to locked rotor. Brake cooling is provided by convection (no external source), by compressed air or by dedicated blower, depending on the model. All Magtrol Hysteresis Dynamometers have accuracy ratings of ± 0.25 % (full scale) depending on size and system configuration. Magtrol motor test systems can be found in test labs, at inspection stations, and on the manufacturing floors of most of the world’s leading manufacturers, users and certifiers of small to medium sized electric, pneumatic and hydraulic motors, as well as internal combustion engines. Magtrol supplies motor test systems for a wide array of industries including: Appliance, Automotive, Aviation, Computer, HVAC, Lawn and Garden, Medical and Dental, Electric Motor, Office Equipment and Power Tools. To better integrate dynamometers into systems, Magtrol offers both long and short base plates. The shorter base plate facilitates easier motor mounting when used with T-slot tables and Magtrol Adjustable Motor Fixtures, where as the long base plates are better suited for table top testing. © 2021 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications wit

HD SERIES DYNAMOMETER SELECTION Magtrol’s Hysteresis Dynamometers cover a wide range of Torque, Speed and Mechanical Power ratings. To select the appropriate size Dynamometer for your motor testing needs, you will need to determine the Maximum Torque, Speed and Power applied to the Dynamometer. MAXIMUM TORQUE The Magtrol Hysteresis Absorption Dynamometer will develop braking torque at any speed point, including low speed and stall conditions ("0" rpm). It is important to consider all torque points that are to be tested, not only rated torque, but also locked rotor and breakdown torque. Dynamometer...

HD SERIES SYSTEM CONFIGURATIONS OPEN LOOP SYSTEMS Magtrol offers both open loop manual test systems and PCbased closed loop test systems. A typical open loop system will consist of a Dynamometer and a Magtrol DSP 7000 Dynamometer Controller in Open-Loop configuration. A Magtrol Single or Three-Phase Power Analyzer, which allows for the capturing of volts, amps, watts and power factor, can be included as an option. An open loop system is often used for quick pass  fail /  testing on the production line or at incoming inspection. Magtrol’s DSP  7000 Dynamometer Controller provides pass  fail testing...

HD SERIES SPECIFICATIONS HYSTERESIS DYNAMOMETER RATINGS MAXIMUM SPEED e) TORQUE MEASURE UNIT a) CODE MAXIMUM TORQUE RANGE DRAG TORQUE DE-ENERGIZED AT 1 000 rpm NOMINAL INPUT INERTIA BRAKE COOLING METHOD Convection Blower a) All -5C dynamometers are 5 Volt Output. Please, contact our sales representative for 6C (English units), 7C (Metric units) or 8C (SI units) specifications. c) Requires air cooling provided by user. Regulator and filter package is provided as standard b) Operating at the continuous power rating for periods of up to 4 hours is acceptable. However, operating for extended periods...

HD SERIES DIMENSIONS HD-100 / 400 / 500 HD-100 / 400 / 500 SERIES WITH LONG BASE PLATE E NOTE: Original dimensions are in English units. Dimensions converted to Metric units have been rounded and are for reference only. a) These dimensions represent the distance between mounting holes. There are four (4) mounting holes on each base plate. b) Shaft Flats are not available on high speed models. NOTE: 3D STEP files of most of our products are available on our website: www.magtrol.com ; other files are available on request. © 2021 MAGTROL | Due to continual product development, Magtrol reserves the...

HD SERIES DIMENSIONS HD-100 / 400 / 500 HD-100 / 400 / 500 SERIES WITH SHORT BASE PLATE Fig. 4: HD-400 Dynamometer with short base plate NOTE: Original dimensions are in English units. Dimensions converted to Metric units have been rounded and are for reference only. a) These dimensions represent the distance between mounting holes. There are four (4) mounting holes on each base plate. b) Shaft Flats are not available on high speed models. NOTE: 3D STEP files of most of our products are available on our website: www.magtrol.com ; other files are available on request. © 2021 MAGTROL | Due to continual...

HD SERIES DIMENSIONS HD-700 HD-700 SERIES WITH LONG BASE PLATE HD-700 SERIES WITH SHORT BASE PLATE NOTE: Original dimensions are in English units. Dimensions converted to Metric units have been rounded and are for reference only. MODELS units HD-700 SERIES WITH LONG BASE PLATE HD-700 HD-710 HD-705 HD-715 HD-700 SERIES WITH SHORT BASE PLATE HD-700 HD-710 HD-705 HD-715 a) These dimensions represent the distance between mounting holes. There are four (4) mounting holes on each base plate. b) Shaft Flats are not available on high speed models. NOTE: 3D STEP files of most of our products are available...