500PRO Main Gear Case Set by Align

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This is a replacement main gear case for the Align 500E, 500ESP, 500E PRO and 500EFL PRO helicopters. This part is designed to prevent locking of the Main drive shaft. This mounts on the main drive gear and supports the One way bearing.


  • (1) 10x14x12mm HF1012 One-way bearing
  • (1) 14x17x40x9mm Main gear case
  • (4) T3x6mm Hex socket self tapping screws
  • (1) 7x10x12.6x27.25mm One-way bearing shaft
  • (1) 10x13x0.8mm Washer

This product was added to our catalog on November 9, 2011.