Hard Aluminum Main Shaft Locking Collar for WLtoys K170 UH-60L (ϕ6.5mm)

Eliminate Vertical Shaft Play and Pitch Inconsistency

A loose or slipping locking collar allows the main shaft to move up and down, which leads to erratic pitch changes and poor altitude hold. This WLtoys K170 Locking Collar set solves the problem of "mechanical slop" in the drivetrain. Made from high-grade hard aluminum alloy, it provides a much more secure grip on the shaft than plastic alternatives, ensuring your rotor head remains perfectly positioned for stable, predictable flight. Ships worldwide.

Product Highlights

• Hard Aluminum Alloy Construction: Designed for maximum durability and resistance to stripping, providing a rock-solid lock on the central drive shaft.

• Precision Dimensions: Specifically sized at ϕ6.5*2.5*3.5mm for a perfect fit on the K170 main shaft.

• Symmetrical Dual Screw Holes: Features 2mm threaded holes positioned symmetrically to provide balanced clamping force and prevent shaft vibration.

• Critical Flight Component: Essential for maintaining the correct distance between the main gear and the swashplate for accurate 4CH cyclic control.

Compatibility

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

What’s in the Box

• 1 x Main Shaft Locking Collar Set

Install Tips

• Removing "Slop": When installing, push the main shaft upward while sliding the collar down against the top bearing to ensure there is zero vertical movement.

• Thread Locker: Apply a tiny amount of blue (medium) thread locker to the $2\text{ mm}$ set screws to prevent them from vibrating loose during high-RPM brushless operation.

• Balanced Tightening: Tighten the two screws incrementally and alternately (a little on one side, then the other) to ensure the collar clamps evenly onto the shaft.

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://www.kidstoylover.com/collections/wltoys-k170-rc-helicopter-spare-parts-accessories