Product Description:

The BL4-D100A is a servo motor built by Okuma as part of the BL Servo Motors series. Designed for use in numerically controlled machine tools, the unit converts amplifier commands into controlled torque and speed at the motor shaft. By returning motion feedback to the controller and responding quickly to changing commands, it supports accurate positioning in machining centers, transfer systems, and other automated equipment. Because it belongs to a modular product line, it can be used with matching Okuma drive components without requiring custom wiring changes.

The motor supports a single controlled axis, indicated by an axis count of 1, and it uses a three-phase supply carried on 3 input lines. Electrical compatibility spans from 180 V AC to 220 V AC, allowing the same motor to operate on common low-voltage industrial power systems. The windings can accept a line current of 100 A, so the connected drive must be sized to supply that value reliably during operation. Power and feedback leads are routed through a sealed conduit, which helps protect the cable path and keeps routing organized inside the machine enclosure. Four M6 threaded mounting points secure the frame to the machine base, and the 80 mm spacing between those fasteners helps maintain alignment during rapid reversals.

The motor has an overall length of 482 mm from flange to tail and a maximum body height of 197 mm, giving it a compact profile for installations with limited clearance around adjacent axes. A mounting hole pitch of 450 mm between the primary mounting surfaces allows the unit to fit standardized brackets with minimal adjustment during assembly. Even with its laminated core and resolver installed, the assembly weighs 6 kg, which helps limit the load placed on support structures and moving machine members. The compact envelope also helps simplify integration where cable bends, guarding, and nearby mechanical components leave little free space around the motor body.