KDA 3.1-150-3-LPI-W1 Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Bosch Rexroth Indramat KDA 3.1-150-3-LPI-W1 is a spindle drive from the KDA Spindle Drives series, designed for forced cooling with a mounted heatsink blower operating at 220V and 50-60Hz. This drive features a rated current of 150 Amps, a DC supply voltage of 300 VDC, and supports incremental encoder output and SERCOS interface for speed command values.
Internal Product Review
The KDA 3.1-150-3-LPI-W1 spindle drive from Bosch Rexroth Indramat delivers high-performance operation with a 150 A rated current and a 300 VDC supply voltage. Forced cooling via a mounted heatsink blower ensures stable thermal management in demanding applications. Incremental encoder output allows for precise spindle feedback, making this model ideal for advanced automation environments.
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Product Description:
The KDA 3.1-150-3-LPI-W1 belongs to the KDA Spindle Drives series manufactured by Bosch Rexroth Indramat. As a closed-loop spindle drive, it regulates torque and speed for high-speed machining spindles by converting common DC-bus energy into a controlled three-phase output. The control platform links directly to motion controllers, allowing coordinated spindle positioning during tool changes and constant-surface-speed cutting operations within CNC and general automation lines. In multi-axis cabinets, it operates from a shared power architecture, which reduces the need for a separate spindle power source and keeps spindle control integrated with the rest of the drive system. This helps the spindle respond smoothly to changing load conditions during acceleration, deceleration, and steady operation.
This version handles a nominal output of 150 A while drawing power from a 300 VDC intermediate circuit. Thermal energy is removed by a mounted heat sink blower, and air is driven across the aluminum fins by forced cooling so the drive can deliver full current without derating. The blower itself accepts an auxiliary supply of 220 V/50-60 Hz, which keeps heat removal separate from the main DC-bus power path. Velocity references reach the regulator through the SERCOS interface, enabling synchronized setpoint updates and diagnostic feedback in distributed control architectures. Because the cooling air is directed over the heat sink rather than through the control section, thermal loading can be managed without changing the electrical control path. This arrangement supports stable spindle regulation during rapid speed changes and sustained machining duty.
Operation is permitted in ambient temperatures from 5 to 45 °C and at installation altitudes up to 1000 m above sea level without performance adjustment. For downstream position controllers, the drive retransmits actual speed through an incremental encoder output, which supports phase alignment in multi-device systems. A second encoder input is available for spindle or auxiliary motor feedback, extending closed-loop regulation to an external axis when required. These feedback paths allow higher-level controls to monitor spindle behavior while coordinating it with related machine motion.
