WLtoys K170 Bearing Set 02 - 2.5x6x1.8mm (2pcs) for Main Drive Shaft

Eliminate Drivetrain Drag and Improve Flight Efficiency

If your helicopter is making a high-pitched grinding sound or battery life is dropping, the main shaft bearings may be worn. This WLtoys K170 Bearing Set 02 solves the problem of friction in the central drivetrain. These 2.5mm bearings support the main shaft, and when they spin freely, the brushless motor works more efficiently, resulting in cooler temperatures, quieter operation, and longer flight times for your Black Hawk. Ships worldwide.

Product Highlights

• Perfect Main Shaft Fit (2.5 x 6 x 1.8 mm): Manufactured to factory tolerances to support the K170 central shaft without vertical or horizontal play.

• Shielded Protection: Equipped with metal shields to protect the internal balls from dust and hair, which is vital for maintaining smoothness in outdoor environments.

• Reduced Vibration: High-precision manufacturing eliminates shaft wobble, preventing the "Toilet Bowl Effect" and keeping your gyro stabilized.

• Long-Life Lubrication: Pre-greased with high-speed synthetic oil to provide immediate "out of the box" performance and durability.

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 02 (2.5 x 6 x 1.8 mm)

Install Tips

• Frame Alignment: When installing into the main frame, ensure the bearings are seated completely flush against the frame supports to keep the shaft perfectly vertical.

• Shaft Inspection: Inspect the main shaft for any wear marks or scores where the old bearings were sitting; if the shaft is worn down, consider replacing it along with the bearings.

• Maintenance: A single drop of thin bearing oil every 20-30 flights will help maintain the 1.8mm width race and extend the life of the drivetrain.

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