WLtoys K170 Bearing Set 01 - 1.5x4x1.1mm (2pcs) for Main Rotor Head

Restore Ultra-Smooth Blade Pitch and Rotor Stability

Worn or "notchy" bearings in the rotor head cause the main blades to track poorly, leading to erratic flight and excessive vibration. This WLtoys K170 Bearing Set 01 solves the problem of mechanical friction at the pivot point of your blade grips. By ensuring the feathering shaft rotates without resistance, these 1.5mm bearings restore the precise cyclic control needed for stable, high-performance scale flying. Ships worldwide.

Product Highlights

• Precision Size (1.5 x 4 x 1.1 mm): Specifically engineered for the K170 rotor head assembly to ensure a zero-slop, perfect fit.

• High-Speed Performance: Designed to handle the rapid oscillations and high RPMs of a brushless-powered 4-channel rotor system.

• Premium Steel Construction: Built with high-grade steel to resist the centrifugal forces applied to the main blades during flight.

• Durable 2-Piece Set: Provides a complete replacement for a single flight axis, ensuring balanced performance on both blade grips.

Compatibility

For the WLtoys K170 UH-60L 4CH Brushless RC Helicopter only.
Full model page (specs & photos):
https://kadstoylover.com/en-us/products/wltoys-k170-uh-60l-2-4ghz-4ch-brushless-military-rc-helicopter

What’s in the Box

• 1 x Bearing Set 01 (1.5 x 4 x 1.1 mm)

Install Tips

• Bearing Orientation: Ensure the bearing is pressed fully and flatly into the blade grip housing; any tilt will cause the rotor to bind.

• Cleaning the Spindle: Before installation, wipe the spindle (feathering) shaft clean of old debris to ensure it slides through the 1.5mm inner diameter smoothly.

• Zero-Force Press: Never use a hammer or heavy force; use a small hex driver to gently push the outer race of the bearing into its seat.

Support & Warranty

• Expert help to choose the right WLtoys K170 spare parts
• 3-month warranty on manufacturing defects
• Ships worldwide

Other Related Parts

Need gears, shafts, servos, LEDs, batteries and more? Browse the full WLtoys K170 spare parts collection:
https://kadstoylover.com/collections/wltoys-k170-rc-helicopter-spare-parts-accessories