AEROTECH BLMH Series Linear Motors
BLMH Series Linear Motors
The BLMH series “U-channel” brushless linear servomotors offer over 70% greater continuous output force (in the same physical envelope) than other manufacturers’ similar models. BLMH series motors feature a high-efficiency magnetic circuit design that provides continuous force ratings to 548.8 N (123.4 lb) and peak forces to 2195 N (493.5 lb). Enhance this extremely high level of performance with special magnet options that increase force and lower heat generation.
Design Features
70% greater continuous output force in the same physical envelope than competitive models
Continuous forces up to 548.8 N (123.4 lb); peak forces to 2195 N (493.5 lb)
Special magnet options available for increased force output
114.1 mm high x 50.8 mm wide cross section
CE approved, follows the EU 2015/863 RoHS 3 directive
BLMH series linear motors are direct drive and consist of a noncontact forcer assembly with Hall-effect devices, a thermal sensor, and “U-channel” magnet track. This design eliminates magnetic attraction to allow for extremely smooth motion and very tight velocity and position control. In addition, backlash, windup, wear and maintenance issues associated with ball screws, belts, and rack and pinions are eliminated.
The BLMH series nonmagnetic forcer eliminates cogging and magnetic attraction to allow for extremely smooth motion and very tight velocity and position control. These linear motors are ideal for any application that requires high speeds with high loads. BLMH series linear motors are forgiving to align, easy to assemble, and keep the magnetic field well-contained. Magnet tracks are stackable for any travel length. They are also suited for industrial usage
BLMH Performance Specifications
| BLMH-142-A | BLMH-142-B | BLMH-262-A | BLMH-262-B | BLMH-382-A | BLMH-382-B | |
| Continuous Force, 1.4 bar, 20 psi(1)(2)(5) | 270.7 N | 437.1 N | 435.8 N | 548.8 N | ||
| Continuous Force, No Forced Cooling(1)(2)(4) | 150.0 N | 266.2 N | 357.9 N | |||
| Peak Force(1)(3)(4) | 1082.7 N | 1748.6 N | 2195.0 N | |||
BLMH Electrical Specifications
| BLMH-142-A | BLMH-142-B | BLMH-262-A | BLMH-262-B | BLMH-382-A | BLMH-382-B | |
| BEMF Constant (Line-Line, Max)(5) | 32.11 V/(m/s) | 64.22 V/(m/s) | 64.42 V/(m/s) | 128.85 V/(m/s) | 45.71 V/(m/s) | 91.42 V/(m/s) |
| Continuous Current, 1.4 bar, 20 psi (Apk )(1)(5) | 9.69 Apk | 4.85 Apk | 7.80 Apk | 3.90 Apk | 10.96 Apk | 6.90 Apk |
| Continuous Current, 1.4 bar, 20 psi (Arms )(1)(5) | 6.85 Arms | 3.43 Arms | 5.52 Arms | 2.76 Arms | 7.75 Arms | 4.88 Arms |
| Continuous Current, No Forced Cooling (Apk )(1)(5) | 5.37 Apk | 2.69 Apk | 4.75 Apk | 2.38 Apk | 9.00 Apk | 4.50 Apk |
| Continuous Current, No Forced Cooling (Arms )(1)(5) | 3.80 Arms | 1.90 Arms | 3.36 Arms | 1.68 Arms | 6.36 Arms | 3.18 Arms |
| Peak Current, Stall (Apk )(2)(5) | 38.76 Apk | 19.38 Apk | 31.20 Apk | 15.60 Apk | 55.20 Apk | 27.60 Apk |
| Peak Current, Stall (Arms )(2)(5) | 27.41 Arms | 13.70 Arms | 22.06 Arms | 11.03 Arms | 39.03 Arms | 19.52 Arms |
| Force Constant, Sine Drive-N/Apk (3)(4)(5) | 27.93 N/Apk | 55.87 N/Apk | 56.04 N/Apk | 112.09 N/Apk | 39.77 N/Apk | 79.53 N/Apk |
| Force Constant, Sine Drive-N/Arms (3)(4)(5) | 39.50 N/Arms | 79.01 N/Arms | 79.26 N/Arms | 158.52 N/Arms | 56.24 N/Arms | 112.47 N/Arms |
| Motor Constant(1)(3)(5) | 14.17 N/√W | 20.24 N/√W | 23.19 N/√W | |||
| Resistance, 25°C (Line-Line)(4) | 3.7 Ω | 14.8 Ω | 7.3 Ω | 29.2 Ω | 2.8 Ω | 11.2 Ω |
| Inductance (Line-Line)(4) | 2.40 mH | 9.60 mH | 4.60 mH | 18.40mH | 1.80 mH | 7.20 mH |
| Thermal Resistance, 1.4 bar, 20 psi(4) | 0.27 °C/W | 0.21 °C/W | 0.18 °C/W | |||
| Thermal Resistance, No Forced Cooling(4) | 0.89 °C/W | 0.58 °C/W | 0.42 °C/W | |||
| Maximum Bus Voltage(4) | 340 VDC | |||||