What are Gimbals?

Gimbals are electromechanical positioning systems designed to provide controlled angular motion about one or more rotational axes. They are used to stabilize, point, or track payloads such as antennas, optical sensors, cameras, or communication terminals. A gimbal assembly typically consists of structural frames, precision bearings, drive motors, encoders or resolvers, and control electronics that enable accurate angular positioning and dynamic stabilization under varying operational conditions.

In aerospace and defense applications, gimbals are engineered to maintain line-of-sight stability despite platform motion and environmental disturbances. Performance depends on structural rigidity, actuator bandwidth, feedback sensor resolution, and mechanical balance. Proper integration requires alignment with payload center of gravity, electrical interface compatibility, and control loop tuning to ensure smooth motion, minimal jitter, and long-term mechanical reliability.

Key specifications of Gimbals

• Mass: Mass represents the total weight of the gimbal assembly, including structural frames, bearings, motors, sensors, and control electronics. System mass affects platform structural loading, dynamic response, and mounting requirements. Lower mass reduces inertial loading on the host platform, while higher mass may provide improved stiffness and stability depending on design.
• Wind Resistance: Wind resistance defines the gimbal’s ability to maintain pointing stability and structural integrity under aerodynamic loading. This parameter influences torque requirements, motor sizing, and structural reinforcement. Adequate wind resistance ensures stable tracking performance in high-dynamic or outdoor environments.
• Wind Inductance: Wind inductance refers to the inductive characteristic of the gimbal’s drive motor windings. It influences current response time, torque control bandwidth, and motor drive stability. Proper inductance matching with the motor controller ensures smooth actuation, minimizes current ripple, and enhances dynamic performance.
• Torisol Stiffness: Torisol stiffness defines the torsional rigidity of the gimbal structure and mounting interfaces. Higher torsional stiffness improves resistance to mechanical deflection under load, reduces vibration-induced pointing error, and enhances control loop stability. Structural stiffness is critical for maintaining angular precision during dynamic maneuvers.
• Payload Capacity: Payload capacity specifies the maximum mass and associated moment that the gimbal can support while maintaining performance specifications. This parameter determines compatibility with sensors, antennas, or optical systems. Payload capacity influences motor torque requirements, bearing selection, and structural reinforcement.
• Angular Velocity: Angular velocity defines the maximum rotational speed achievable about the controlled axes. It determines tracking responsiveness, target acquisition speed, and maneuver capability. Higher angular velocity capability requires appropriate motor sizing, encoder resolution, and control loop bandwidth to maintain stability and precision.

The Largest Database of Gimbals

SatNow has listed Gimbals from the leading manufacturers and made them searchable by specification. You can enter the key parameters and the search tool will scan catalogs from the leading manufacturers to identify products that meet your spec. Once you find Gimbals that meet your requirement, you can view product information, download datasheets or request quotations. Quotation requests will be routed to the manufacturer of the product who will get back to you directly. The quotation will also be routed to distributors of the product in your region.