Electromagnetic Miki Pulley BX series brakes are a power-off, engaged type brake. When the stator is energized, the brake is disengaged allowing free rotation. When no current is applied, compression springs halt the brake rotor thereby stopping the input shaft rotation. This is useful to prevent power failure events. More after the jump.

Of the BX series, the BXR-LE has expanded to 3 additional sizes — so there are six total size configurations from which to choose. These brakes boast advantages including a slim design and high holding torque in a compact package. They provide quiet operation with long service life. This brake was designed for smaller machine and robotic applications, where cantilevered loads can negatively impact operation. The brake’s unique compact and lightweight design optimizes machine design efficiency. With accompanying voltage controller, power consumption is stepped down to 7VDC after a split second of 24VDC for brake actuation.*

When compared to the other BX brakes in the Miki lineup, this revolutionary BXR-LE design provides just one-third power consumption and heat generation in one-half the overall size thickness. Maximum speed is 6,000 rpm.

In addition, the brakes have a static friction torque range of 0.06 Nm to 3.20 Nm … in other words, 0.044 to 2.36 ft-lb.

Ambient operating temperature is -20° to 60° C … in other words, -4° to 140° F.

Applications for the BXR-LE brakes from Miki Pulley

• Pan-tilt brake for security cameras
• Robotic arm joints to stop movement during a catastrophic power failure; Z-axis ball screw brake on CNC machine centers; Z-axis brake
• Internal brake for direct drive servomotors
• Brake for locking sensor alignment

For more information, email jdavidson@mikipulley-us.com.