PMA240-1150B-02 Pacific Scientific
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The Pacific Scientific PMA240-1150B-02 is a brushless servomotor in the PMA Brushless Motors series, featuring a continuous stall torque of 2.6 Nm and a peak torque of 9.6 Nm. This motor has a 24V brake, a 70 mm motor body square, and weighs 3.5 kilograms. It uses a closed keyway shaft with key fitted and has a rotor inertia of 0.072 kgm^2 x 10^-3.
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Product Description:
The PMA240-1150B-02 is a brushless servomotor designed and manufactured by Pacific Scientific. The unit converts electrical energy from a matched drive into precisely metered mechanical rotation, allowing automated axes to position loads quickly and repeatably in packaging lines, material handling stations, and other motion-control assemblies. It is suited to servo systems that need controlled acceleration, stable low-speed motion, and repeatable stopping during indexing, transfer, and positioning tasks. It belongs to the PMA Brushless Servomotors family, a product group built for high torque density in compact mounting dimensions.
A brake coil rated for 24 V operates a spring-applied holding brake that helps the motor maintain shaft position when power is removed. At stall, the windings can continuously deliver 2.6 Nm of torque without exceeding thermal limits, giving stable force for dwell periods and low-speed indexing. For short bursts, output rises to a peak of 9.6 Nm, enabling rapid acceleration of moderate inertial loads during start-stop motion. The square stator frame measures 70 mm on each side, which keeps the magnetic circuit in a compact footprint that fits common metric mounting patterns. Dynamic response is influenced by a reflected rotor inertia of 0.072 × 10⁻³ kg·m², supporting tight velocity loops and responsive changes in commanded speed.
The motor uses a shaft with a closed keyway with a fitted key, which transmits torque without slip and helps keep a mounted hub aligned during operation. The laminated core uses stack length code 4, increasing copper volume and flux path so the motor can reach rated torque without external cooling in typical servo duty. Overall mass is limited to 3.5 kg, which reduces the load added to moving carriages and supports use on axes where motor weight directly affects acceleration and settling behavior. The relatively low mass also helps when the motor is mounted on cantilevered slides or other moving members.
Frequently Asked Questions about PMA240-1150B-02:
Q: Does the PMA240-1150B-02 motor come with a brake system?
A: This model is equipped with a 24V brake for holding applications.
Q: What is the continuous stall torque of the PMA240-1150B-02 motor?
A: The PMA240-1150B-02 has a continuous stall torque rating of 2.6 Nm.
Q: What is the peak torque provided by the PMA240-1150B-02 brushless motor?
A: This motor offers a peak torque output of 9.6 Nm during operation.
Q: What type of shaft configuration does the PMA240-1150B-02 motor use?
A: The shaft on the PMA240-1150B-02 features a closed keyway with a key fitted for secure mechanical coupling.
Q: What are the physical dimensions of the PMA240-1150B-02 motor body?
A: The motor body of the PMA240-1150B-02 measures 70 mm square.
