Extra Light Torque Tube Type Airframe Control Bearing Open Type Single Row Ball Bearing 0.75 In x 1.875 In x 0.281 In For Non Aircraft Use, Lightweight Open Ball Bearing With 24 Balls, Low Friction, High Precision Replacement Part

B539 Light Torque Tube Bearing 1 pc 3/4 x 1-7/8 x 9/32 in
✔️ 1 pc pack, 3/4 x 1-7/8 x 9/32 in, open type, 24-ball

The B539 is an extra-light duty airframe control bearing used to guide torque tubes and control linkages in small aircraft, drones, and RC models. It helps maintain precise alignment while keeping weight down in lightweight airframes.

✅ Size: 3/4 in x 1-7/8 in x 9/32 in (19.05 x 47.63 x 7.14 mm)
✅ Radial load: 3750 lbf (16.7 kN)
✅ Thrust load: 1700 lbf (7.56 kN)
✅ Type: Open, single-row, full-complement 24-ball bearing
✅ Lubrication: chromium alloy, high-carbon steel preservative (cadmium-free)
✅ Pack: 1 bearing

💡 What is a pillow block bearing used for in airframe control applications?

In handy setups, these bearings keep control rods and torque tubes aligned and moving smoothly.

- Ideal for lightweight model aircraft, RC planes, and drones
- Helps maintain precise alignment under varying loads
- Supports open-type, single-row ball bearings for steady motion