KDA 2.1-100-3-DQS-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 2.1-100-3-DQS-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 100 Amps and a DC supply voltage of 300 Volts. It features forced cooling via a mounted heatsink blower and operates in ambient temperatures from 5 to 45 degrees Celsius. The drive supports a 16-bit parallel digital speed command value and includes a serial RS 232 C interface.
Internal Product Review
The KDA 2.1-100-3-DQS-W1 spindle drive from Bosch Rexroth Indramat features a reliable forced cooling system using a mounted heatsink blower, suitable for environments up to 45°C ambient temperature. With its 100 A rated current and digital 16-bit parallel speed command capability, this drive delivers precise and efficient performance for demanding spindle applications. The inclusion of a serial RS 232 C interface adds flexibility for integration.
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Product Description:
The KDA 2.1-100-3-DQS-W1 spindle drive is produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. As a dedicated spindle drive, it converts DC link energy from an external supply into three-phase output for high-speed motor control in CNC machines and other automated cutting systems. By managing torque and speed with closed-loop precision, the unit allows machining centers to maintain surface finish quality and tool life while reducing cycle time.
The drive draws its main power from a DC link rated at 300 VDC; this is the required input for the internal switching stage and must be supplied by a compatible converter module. A continuous output capacity of 100 A permits the spindle motor to accelerate heavy tool holders without current foldback. The controller interprets a 16-bit parallel digital speed command, so numerical control systems can load precise setpoints with a resolution of 65,536 steps. Thermal stability is supported by a mounted heat sink blower that directs airflow across the semiconductor stack, and the fan itself is powered from a separate 220 V, 50/60 Hz source so cooling remains independent of the DC bus. Independent fan power helps the unit stay cooled during long roughing passes or rapid spindle reversals.
The drive operates between 5 °C and 45 °C, allowing installation on factory floors that are conditioned only for personnel comfort. Altitude is restricted to 1000 m above sea level; beyond this height, derating is required because thinner air reduces convective heat removal. An integrated RS-232-C serial interface offers parameter backup and diagnostic readout without removing the unit from the cabinet, supporting preventive maintenance routines. Air is forced through the heat sink channels by forced cooling, keeping internal temperatures below operating limits even when the equipment cabinet lacks auxiliary ventilation.
