Blade Main Shaft Bearing, 4x7x2mm for 120 SR (BLH3128)
$7.99
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Blade Main Shaft Bearing, 4x7x2mm for 120 SR (BLH3128)
$7.99
Precision Fit
Direct Factory Replacement Part
Ultra Smooth
Reduces Main Shaft Friction
Exact Sizing
Standard 4x7x2mm Precision Dimensions
Essential Helicopter MaintenanceKeep Your Heli Flying Smoothly
Restore peak performance to your micro rotorcraft with the authentic Main Shaft Bearing 4x7x2: 120SR. Engineered to deliver ultra-low friction, this precision ball bearing ensures maximum flight stability and optimal power transfer from your drivetrain.
Quality Replacement EngineeringPrecision Performance for Smooth Flights
When performing routine maintenance on your Blade 120 SR RC Helicopter, high-grade replacement parts are essential for flight performance. The Main Shaft Bearing 4x7x2: 120SR offers an exact drop-in fit to replace worn or damaged stock components. Built to handle continuous high-speed rotation, this durable RC helicopter part reduces drag across the main shaft assembly, extending overall motor life and preserving flight efficiency.
Detailed Technical SpecificationsExact Sizing and Compatibility Data
Compatible Vehicles
Blade 120 SR (BLH3100) (helicopter)
Part Type
Main Shaft Bearing
Material
High-Grade Steel
Placement/Position
Main Rotor Shaft
Dimensions
4 x 7 x 2 mm
Weight
0.1 oz / 2.8g
Key Component FeaturesEngineered for Long Lasting Reliability
Direct CompatibilityPerfect factory fit for the Blade 120 SR helicopter
Low Friction DesignMinimizes rotational drag for smoother flight
Durable ConstructionCrafted from quality steel for lasting performance
Easy MaintenanceDrop-in design makes replacements quick and easy
Standard DimensionsPrecision 4mm x 7mm x 2mm sizing
Frequently Asked QuestionsEverything you need to know
Is the Main Shaft Bearing 4x7x2: 120SR an original replacement part?
Yes, the Main Shaft Bearing 4x7x2: 120SR is a precision replacement part designed specifically for exact fit and performance in compatible micro RC helicopters.
What are the exact dimensions of the Main Shaft Bearing 4x7x2: 120SR?
The Main Shaft Bearing 4x7x2: 120SR features an inner diameter of 4mm, an outer diameter of 7mm, and a width/thickness of 2mm.
How do I know when to replace my Main Shaft Bearing 4x7x2: 120SR?
You should replace the Main Shaft Bearing 4x7x2: 120SR if you notice slop or play in the rotor shaft, unusual vibration during hover, or audible grinding during flight operation.