8JSA42.E7035D200-0 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation 8JSA42.E7035D200-0 is a synchronous motor in the 8JS Synchronous Motors series. It features a nominal power of 1004 W, a nominal speed of 3500 RPM, and a nominal torque of 2.74 Nm. This motor has a flange mounting style, a smooth shaft end, weighs 3.39 kg without the brake, and uses self-cooling.
Internal Product Review
The 8JSA42.E7035D200-0 is a B & R Automation 8JS series synchronous motor with self-cooling and flange mounting. The optical EnDat 2.1 multi-turn encoder and ±20 arcsec precision support accurate feedback and refined motion control. Nominal output of 1004 W and maximum torque of 13.1 Nm give the motor excellent servo performance for dynamic axes.
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Product Description:
The 8JSA42.E7035D200-0 synchronous motor is produced by B & R Automation for the 8JS Synchronous Motors series. It serves as a compact rotary actuator for automated axes. The unit has motor size 4 and motor length 2, and it attaches through a flange mount so the smooth shaft can couple directly to gearheads or pulleys. Power and feedback conductors exit through an angled swivel connector, while self-cooling fins keep internal heat within operating limits. At 3.39 kg, the unit suits small pick-and-place heads, and its design omits an oil seal for applications in which a sealed gearbox is already present.
The motor produces a nominal output of 1004 W when the shaft turns at 3500 rpm and delivers 2.74 Nm of torque. At a phase current of 2.18 A, the windings have a resistance of 7.78 Ω. The stator inductance is 26.8 mH, which affects current rise times in the drive control loop. Five pole pairs establish the relationship between electrical frequency and mechanical speed, while the rotor inertia of 1.5 kg·cm² supports fast acceleration without overloading the servo amplifier. For position feedback, an optical EnDat 2.1 encoder supplies 2,048 lines and 13/12-bit single-turn data with a precision of ±20 arcseconds. It records absolute position across 4,096 revolutions, eliminating the need for homing after a power cycle.
The shaft can produce a peak torque of 13.1 Nm for short periods and sustain 3.42 Nm of torque at stall without thermal damage. A voltage constant of 80.9 V/1000 rpm helps ensure that the selected drive bus voltage accommodates the required back electromotive force. When power is removed, the standard holding brake clamps the rotor with 5.3 Nm of torque, preventing drift on vertical axes. The multi-turn EnDat feedback retains position information between operating cycles, while the swivel connector supports compact cable routing in rapid tool changers and small palletizers.
