SR-B4.0230.060-14.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SR-B4.0230.060-14.000 is part of the SR Synchronous Servo Motors series and features a shaft diameter of 24 mm with a flange size of 142 mm. It has a rated speed of 6000 min-1 and a torque constant of 0.88 Nm per ampere. The motor is equipped with a resolver encoder type offering an encoder resolution of 8192 increments per revolution.
Internal Product Review
The SR-B4.0230.060-14.000 is a Bosch Rexroth Indramat synchronous servo motor with a resolver encoder and 8192 incr./rev. feedback resolution. Rated speed of 6000 min-1 and locked-rotor torque of 22 Nm support fast, controlled motion in demanding servo axes. A 24 VDC holding brake with 18 Nm torque adds valuable axis retention, making this motor a strong choice for precise positioning service.
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Product Description:
The SR-B4.0230.060-14.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat and supplied within the SR Synchronous Servo Motors series. Designed for CNC axes, packaging machinery, and assembly gantries, the unit transforms three-phase drive power into tightly regulated shaft motion. Its permanent-magnet rotor works with stator windings optimized for rapid acceleration, providing a compact actuator that integrates directly with Rexroth digital drives for closed-loop positioning.
An integrated holding brake operates at 24 VDC and draws 0.7 A when engaged, allowing the control relay and power supply to be sized for reliable shaft holding during standstill. The brake can withstand up to 18 Nm of counter-torque when energized, preventing loads from driving the motor backward on vertical axes. Position feedback is supplied by a resolver that provides 8,192 increments per revolution, allowing the drive controller to execute indexed moves with fine angular resolution. Mechanical coupling to surrounding equipment uses a 142 mm square flange that aligns the motor with compatible gearboxes and linear modules.
The winding has a torque constant of 0.88 Nm/A, so output torque increases in proportion to the commanded phase current. Under rated excitation, the rotor reaches 6,000 rpm, requiring connected mechanical components to tolerate the resulting surface speed and bearing loads. In stall conditions, the stator can accept 25 A and produce up to 22 Nm without shaft rotation. The selected drive and motor cables must accommodate these short-term electrical and mechanical loads. Power is routed through a four-core motor lead with conductors measuring 6.0 mm². The brake contributes 3.1 × 10-4 kg·m² of inertia, while the rotor contributes 54 × 10-4 kg·m². A 24 mm keyed shaft provides positive engagement with a compatible coupling, pulley, or gearbox input while supporting rapid acceleration of the connected mechanism.
