SR-B4.0172.060-00.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-B4.0172.060-00.000 is a synchronous servo motor in the SR Synchronous Servo Motors series, featuring a 142 mm flange size and a mass of 19 kg. It offers a rated speed of 6000 revolutions per minute and a locked-rotor torque of 17 Nm. This motor uses a resolver feedback device with a resolution of 8192 increments per revolution and has a shaft size of 24 x 50 mm with a keyway and feather key style.
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Product Description:
The SR-B4.0172.060-00.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SR Synchronous Servo Motors series. It serves as a compact rotary actuator that supplies closed-loop torque and speed control in industrial automation systems. Its responsive design supports conveyors, pick-and-place arms, and high-cycle packaging lines that require accurate positioning and rapid changes in motion.
The motor supports a rated speed of 6000 rpm, allowing rapid reversals and constant-velocity segments in tight motion profiles. A torque constant of 0.65 Nm/A links drive current to shaft torque, simplifying controller gain settings. The square mounting interface uses a 142 mm flange for stable attachment to compatible machine surfaces. The motor has an active length of 309 mm, permitting installation in medium-frame machines without additional spacers. Rotor inertia is limited to 40 × 10⁻⁴ kg·m², allowing acceleration commands to reach the load quickly with limited overshoot. Mechanical output passes through a 24 × 50 mm shaft fitted with a keyway and feather key, providing positive engagement with a coupling or driven component. A resolver at the non-drive end supplies rotor-position feedback with a precision of ±10 angular minutes, supporting smooth commutation throughout the operating range. The power leads terminate at a size 1.5 connector, providing a secure and compact electrical connection.
During startup or stall conditions, the winding can accept 26 A RMS and develop a locked-rotor torque of 17 Nm. This torque helps prevent axis drift while clamps close or tooling seats against the workpiece. The motor weighs 19 kg, providing thermal mass that supports intermittent overload conditions without forced cooling. The resolver provides a feedback resolution of 8192 increments per revolution, enabling precise velocity regulation at low shaft speeds. Its feedback signal also allows the connected drive to monitor rotor movement and correct deviations during demanding motion cycles.
