Gravity Outlet Gates


TCC IV Series- Long Travel


TCC IV Series- Long Travel

Replacement Gates

The SelfLOK® gravity discharge gates provide reliable performance under a variety of demanding applications. The gates are suitable for most bulk commodities and provide the following features:

Operating Advantages

  • Lock engages automatically
  • Operable from either side of the car
  • Available in bolt-on or weld-on applications

Available Sizes

  • 24 x 48
  • 13 x 24
  • 13 x 42


The BackLOK™ assembly retrofit kit is designed to upgrade older Miner discharge gates to automatic locking and unlocking operation. In addition to upgrading the gate to conform to AAR-S233-92 specifications, the kit provides:

  • A cost-effective method to upgrade a SelfLOK® to an AutoLOK™ II
  • All new operating parts
  • Operation from both sides of the gate
  • New handles with 1 ½" square drive opening
  • Eliminates the need to manually unlock and lock the gates at unloading sites


Miner’s AutoLOK™ II is the most widely specified outlet gate in the industry. The AutoLOK II is easy to open and close and stays locked. With tight tolerances and full perimeter seals, the AutoLOK II prevents leakage–making it perfect for dry bulk commodity materials. The AutoLOK II meets all GEAPS and AAR S-233-92 specifications to improve unloading operations in a wide variety of demanding applications.

Gate sizes and commodity are representative only.

13 x 42 (cement, sand, powder commodities)
13 x 42 Low-Profile (cement, sand)
15 x 48 Ultra-Low Profile (cement, sand)
30 x 30 (grain, soda ash, potash)
28 x 36 (general service)
24 x 48 (general service)
24 x 54 Low-Profile (sand)
42 x 42 (DDG, grain)
42 x 52 (DDG)

Contact your Miner Sales Manager to determine the best fit for your application.