EDDY-CURRENT 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 ▪ 13 Models with Maximum Torque: 300 mN·m ... 560 N·m (42 oz·in ... 413 lb·ft) ▪ Braking Power: 500 W ... 140 kW ▪ Stable Braking Torque, without Shock ▪ Low Moment of Inertia ▪ Low Residual Torque ▪ Operating Direction CW / CCW ▪ Braking Torque Measurement Integrated ▪ High Rotational Speed ▪ Integrated Optical Speed Sensor ▪ Special designs available upon request Eddy-Current Brake Dynamometers (WB Series) are ideal for applications requiring high speeds and also when operating in the middle to high power range. Eddy-Current Brakes provide increasing torque as the speed increases, reaching peak torque at rated speed. The dynamometers have low inertia as a result of small rotor diameter. Brake cooling is provided by a water circulation system, which passes inside the stator to dissipate heat generated by the braking, providing high continuous power ratings (max. 140  kW). WB  Series Dynamometers integrate a torque measuring system with an accuracy ratings of ± 0.3 % to ± 0.5 % full scale, depending on size and system configuration. Mounted on test benches, the WB  Series Eddy-Current Dynamometers allow performance and reliability testing on driving elements such as servomotors, micromotors for cameras, fans, drills, combustion engine, pumps, pneumatic equipment, hydraulic transmission systems, gas turbines, spindles, compressors and motors for domestic appliances. EDDY-CURRENT DYNAMOMETER OPERATING PRINCIPLES The WB Eddy-Current Dynamometers develop their full power at high rotation speeds. The WB Series is particularly intended for motors which rotate at high speeds, up to 65 000 rpm (up to 100 000 rpm with WB 23 / 27; see specific datasheet). The braking torque depends on the rotation speed. OPTICAL SPEED SENSOR Each WB Series Dynamometer has an optical speed sensor delivered as standard. WB 2.7 & WB 43 has an optical speed sensor with a 30 PPR (Pulses Per Revolution) encoder; WB 65, WB 115 & WB 15 has an optical speed sensor with a 60 PPR encoder. © 2021 MAGTROL | Due to continual product development, Magtr

WB SERIES DYNAMOMETER CONFIGURATIONS The Dynamometers can be complemented by various electronic modules such as the DES Series (Power Supply), TSC 401 (Torque/Speed Conditioner) and DSP  7000 (High Speed Programmable Dynamometer Controller). accurate torque and speed measurement with high noise immunity. For a dynamic, high-precision system, the torque transducer can be mounted in line between the unit under test and the dynamometer, providing a torque accuracy of 0.1 %. Magtrol also offers In-Line Torque Transducers (TS Series or TM Series) or Torque Flange (TF Series) for extremely TS / TM...

WB SERIES WB 2.7 TORQUE-SPEED-POWER CURVES 15 915 rpm Torque [mN∙m] © 2021 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning.

WB SERIES WB 65 & WB 115 TORQUE-SPEED-POWER CURVES 2 865 rpm © 2021 MAGTROL | Due to continual product development, Magtrol reserves the right to modify specifications without forewarning.

WB SERIES WB 2.7 DIMENSIONS T (removable calibration arms) Cooling water connection ø6 mm b) CAUTION: All WB Series Dynamometers must be water cooled. NOTE: Original dimensions are in metric units. Dimensions converted to English units have been rounded up to 4 decimal places. a) For calibration in N·m with weight in kg 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 right to modify specifications

WB SERIES WB 43 DIMENSIONS T (removable calibration arms) Reference surfaces Cooling water connection ø10 mm CAUTION: All WB Series Dynamometers must be water cooled. NOTE: Original dimensions are in Metric units. Dimensions converted to English units have been rounded up to 4 decimal places. a) 255 mm for a calibration in N·m with weight in kg (use outer groove); 250 mm for calibration in N·m with weight in N (use inner groove) c) Shaft of high speed version (HS) is ø12 h6, smooth (without key) with a different length. For more information, please contact our sale service. NOTE: 3D STEP files...

T (removable calibration arms) Reference surfaces Cooling water connection ø10 mm CAUTION: All WB Series Dynamometers must be water cooled. NOTE: Original dimensions are in metric units. Dimensions converted to English units have been rounded up to 4 decimal places. a) 510 mm for a calibration in N·m with weight in kg (use outer groove); 500 mm for a calibration in N·m with weight in N (use inner groove). c) Shaft of high speed version (HS) is ø12 h6, smooth (without key) with a different length. For more information, please contact our sale service. NOTE: 3D STEP files of most of our products...

T (removable calibration arms) Reference surfaces Cooling water connection ø15 mm CAUTION: All WB Series Dynamometers must be water cooled. NOTE: Original dimensions are in metric units. Dimensions converted to imperial units have been rounded up to 4 decimal places. a) 510 mm for a calibration in N·m with weight in kg (use outer groove); 500 mm for a calibration in N·m with weight in N (use inner groove). 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...