STEAM AK4209

Name: Wenzhou Xinyue Technology Innovation Co,ltd STEAM AK4209
Brand: Xinyue

The STEAM AK4209 is a matte-black metal main gear center hub for AK420 helicopters. Its thickened aluminum center ring helps prevent gear wobble during high-speed rotation, while a sprag bearing locks the main shaft. The supplied components include two flange bearings and four socket head cap screws.

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Product overview

The STEAM AK4209 is a matte-black metal main gear center hub for the AK420 helicopter. Its thickened aluminum center ring helps prevent main gear wobble during high-speed rotation. A sprag bearing locks the main shaft with three times the locking force of an ordinary needle-type one-way bearing, helping prevent shaft slipping. Upper and lower flange bearings facilitate installation.

The supplied components comprise one 14×28.5×17.5mm metal main gear center hub, one Φ8×Φ14×10mm sprag bearing, two Φ8×Φ14×4mm flange bearings and four M2.5×5mm socket head cap screws.

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Specifications

STEAM AK4209 specifications
Specification	Value & conditions
Model	AK4209
Product type and finish	AK420 metal main gear center hub, matte black
Helicopter compatibility	AK420 helicopter
Center ring construction	Thickened aluminum center ring
Main shaft locking mechanism	Sprag bearing locks the main shaft
Locking force	3 times the locking force of an ordinary needle-type one-way bearing
Main shaft slip prevention	Helps prevent main shaft slipping
Main gear stabilization	Thickened aluminum center ring helps prevent main gear wobbleDuring high-speed rotation.
Installation feature	Upper and lower flange bearings facilitate installation
Metal main gear center hub	14×28.5×17.5mm ×1Included equipment.
Sprag bearing	Φ8×Φ14×10mm ×1Included equipment.
Flange bearings	Φ8×Φ14×4mm ×2Included equipment.
Socket head cap screws	M2.5×5mm ×4Included equipment.