8JAS42.R0035D000-0 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation 8JAS42.R0035D000-0 is part of the 8JS Synchronous Motors series and has a nominal power of 1004 W and a nominal speed of 3500 RPM. The motor features a self-cooling system, a smooth shaft end, and an angled swivel connector. It has an encoder system with a resolver for position feedback and weighs 3.39 kg.
Internal Product Review
The 8JAS42.R0035D000-0 is a B & R Automation 8JS synchronous motor with self-cooling and a resolver encoder. A 3500 RPM nominal speed paired with 2.74 Nm nominal torque supports smooth, responsive servo-axis performance. The angled swivel connector adds installation flexibility, making the motor a strong fit for compact motion systems.
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Product Description:
The 8JAS42.R0035D000-0 is a synchronous servo motor produced by B&R Automation for the 8JS Synchronous Motors series. Designed for fixed-frame mounting inside compact machinery, the unit supplies controlled shaft motion to indexing tables, pick-and-place heads, and similar axes in automated production cells. It receives modulated three-phase current from a matching drive controller and converts that energy into rotary movement through its five-pole-pair electromagnetic stack.
At its rated operating point, the motor delivers 1004 W of mechanical output while turning at 3500 rpm and producing a nominal torque of 2.74 Nm. These three values represent the continuous operating capacity that the drive can sustain without excessive heating. Peak conditions allow up to 13.1 Nm, giving the motor extra capacity for acceleration or sudden load changes. The phase resistance is 7.78 Ω, and the nominal current of 2.18 A provides a baseline for drive sizing. A stall torque of 3.42 Nm is available when the shaft is held stationary. The stator inductance of 26.8 mH shapes the current rise time for smooth vector control.
Dynamic response is influenced by a rotor inertia of 1.5 kg·cm², which keeps start-stop cycles quick while still damping minor disturbances. The relationship between current and motion is represented by a torque constant of 1.26 Nm/A and a back-EMF voltage constant of 80.9 V/1000 rpm. These parameters allow the controller to predict torque and manage regenerated energy accurately. With a mass of 3.39 kg, a size code of 4, and a length code of 2, the motor can be installed on light-duty machine frames. The smooth shaft end simplifies coupling to compatible mechanical components. Because the motor has no oil seal or holding brake, external sealing or a mechanical lock must be provided when the application requires either feature. The self-cooling housing removes heat without auxiliary blowers, and the cabling exits through an angled swivel connector to accommodate tight panel layouts.
