KDA 3.1-050-3-DPI-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 3.1-050-3-DPI-W1 is a spindle drive from the KDA Spindle Drives series. It operates with a rated current of 50 Amps and uses a mounted heatsink blower for forced cooling. This drive features a second encoder input for spindle or motor feedback and supports digital 16-bit parallel speed command values.
Internal Product Review
The KDA 3.1-050-3-DPI-W1 spindle drive from Bosch Rexroth Indramat delivers dependable performance with a rated current of 50 A and a DC supply voltage of 300 VDC. Forced cooling is achieved through a mounted heatsink blower powered by a 220V AC source, supporting continuous operation in demanding environments. With incremental encoder output and digital 16-bit speed command value, this unit stands out for precise spindle control in industrial applications.
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Product Description:
The KDA 3.1-050-3-DPI-W1 is a spindle drive manufactured by Bosch Rexroth Indramat and assigned to the KDA Spindle Drives series. It is intended to power and control high-speed machine-tool spindles, supplying the current, voltage, and feedback processing needed for accurate cutting speeds and stable surface quality in industrial automation equipment. The unit uses the series 3 hardware platform and is mounted vertically inside sealed electrical enclosures. It is commonly used where spindle speed must remain stable during rapid load changes in production machines and machining centers. Bus bars or line reactors are provided separately as part of the machine power system.
Internally, the drive draws its logic and power-stage supply from a stabilized DC link rated at 300 VDC. Under continuous operation, it can deliver up to 50 A to the motor phases, so cabinet conductors and protective devices must be selected for that load. Heat from the power electronics is removed by forced cooling, and the mounted blower is supplied from an auxiliary line rated at 220 V, 50–60 Hz. This cooling arrangement is intended for ambient air temperatures from 5 to 45 °C, which covers normal indoor industrial conditions without requiring a separate liquid-cooling circuit.
The controller exchanges velocity commands through a digital 16-bit parallel interface, providing fine speed resolution for tapping, drilling, and grinding cycles. Position verification for higher-level CNC or PLC hardware is available through the built-in incremental encoder output. A configurable second encoder input supports direct spindle feedback or feedback from a separate axis motor, depending on the machine layout. Operation is permitted up to 1000 m above sea level; above that altitude, additional derating is required. Separate command and feedback channels allow the drive to fit systems that need coordinated spindle control with repeatable speed regulation.
