Precision Metal Main Shaft Ball Bearings Set for RC ERA C170 Apache

Eliminate Rotor Head Axial Play, Stop High-Frequency Friction Drag, and Prevent Power Loss During High-RPM 3D Stunt Flight

The main shaft bearings are the critical contact points that support the spinning drive core, converting raw motor torque into smooth lift while minimizing rotational friction. For a high-performance 1:48 scale military model like the RC ERA C170 Longbow Apache, performing aggressive flips and rolls puts immense radial and axial pressure on these microscopic balls. Over time, crash impacts, dirt infiltration, or grease drying out will cause internal bearing play, leading to an audible metallic grinding noise, erratic swashplate shaking, and excessive battery drain due to motor drag. This factory-original double-shielded bearing set replaces your gritty or seized components immediately, restoring a whisper-quiet drivetrain, maximizing flight times, and ensuring ultra-smooth gyro stabilization readings.  Ships worldwide.

Product Highlights

• Premium High-Carbon Chrome Steel: Forged from high-grade industrial steel alloy to resist tracking wear, flattening, or deformation under high-G 3D aerobatic maneuvers.

• Double-Shielded Anti-Dust Metal Seals: Equipped with dual-sided steel structural walls to lock in factory lubrication while blocking fine grass clippings, dust, and moisture from destroying the race track.

• Ultra-Low Internal Friction Coefficient: Engineered to spin with zero rotational resistance, reducing core thermal buildup in your brushless motor and smoothing out cyclic controls.

• Perfect Millimeter Dimensional Consistency: Machined to exact factory specifications for a seamless press-fit into the internal chassis bearing pockets without inducing slop or binding.

Compatibility

For the RC ERA C170 1:48 Scale Longbow Apache RC Helicopter only.
Full model page (specs & photos):

https://www.kidstoylover.com/products/rc-era-c170-1-48-scale-longbow-apache-rc-helicopter

What’s in the Box

• 1 x RC ERA C170 Bearings Set

Install Tips

• Extracting Worn Internal Bearings: Disassemble the main rotor head and pull out the center drive shaft; use a small hex driver tool to gently tap the old, gritty bearings outward from their molded seats in the internal chassis main frame.

• Seating the Replacement Ball Bearings: Wipe the frame bearing pockets clean of old grease residue; press the new silver shielded bearings completely flat and square into the upper and lower chassis housings, applying gentle, even pressure only to the outer metal race to avoid denting the shield.

• Reinserting the Drive Spindle Axle: Slide your straight main shaft down through both installed bearings; it should slide smoothly through the center bores with zero lateral rocking or sticking points.

• Pre-Flight Friction and Runout Diagnostics: Spin the main gear assembly manually before fastening your outer fuselage skin; ensure the entire mechanical stack rotates freely and coasting continuously for a few seconds without catching, securing rock-steady hover stability for your next tactical mission.

Spare Parts & Accessories

Find remote control，battery，USB，carcase clips，screwdriversand more in the dedicated parts collection

https://www.kidstoylover.com/collections/rc-era-c170-rc-helicopter-spare-parts-accessories

Support & Warranty

• 3-month warranty on manufacturing defects
• Ships worldwide