Miki Pulley Provides BXR-LE Brakes for SCARA Operations

Precise positioning of semiconductor wafers during SCARA assembly operations requires instantaneous braking and holding power while minimizing heat in the system. The latest compact and slender Miki Pulley BXR-LE brake models provide the needed perfectly controlled braking in a confined area of the system using minimal power.

Cycle time is critical in semiconductor assembly. The BXR-LE braking response and holding power makes it ideal for these high-speed applications. The Miki Pulley BXR-LE brake is a power-off engaged brake that holds a semiconductor wafer in place. For subsequent operations, the brake is energized which disengages the rotor disc for the next assembly operation. The BXR-LE brake uses 24 VDC for a split second to overcome compression spring inertia to open the brake, then consumes only 7 VDC by utilizing the BEM power control module. 

Because these semiconductor assembly operations are fully automated for long-term operation, dependable, maintenance-free braking is essential for their uninterrupted operation. That is where Miki Pulley’s BXR-LE brakes excel for semiconductor assembly as well as bio-med and packaging applications using SCARA automation.

When compared to most other electric brakes, the BXR-LE design provides just one-third power consumption and heat generation in one-half the overall size thickness.

Specifications are:

? Maximum RPM: 6,000

? Static friction torque range: 0.044 ft.lb. to 2.36 ft.lb. (0.06 Nm to 3.20 Nm) 

? Ambient operating temperature 14°F – 104°F (-10°C to 40°C)