10.20.2025 - 1 - Rotating Biological Contactor (RBC) gear box repair/replacement - Oakridge WWTP

WWTP has two RBCs, gear box of one RBC is making a knocking noise.  Here is the spec on the existing drive:

Browning Rotating Biological Contactor Drives Cast Iron Rotating Biological Contactor Drive - 415SMT148
Part #:1725050
 
Catalog #:415SMT148

Technical Specifications
Input Torque:36.013 in-Lbs @1750 input rpm, 1 HPRatio:148:1
Input Speed:1750Output Speed:11.8243243243243
Efficiency:80Input Style:Tapered
Mounting Style:Shaft mountGear Type:Helical / spur
Ratio Range:100:1 to 250:1Reducer Size:415
Housing Width (in):15.55 inStandards met:AGMA
Housing Length (in):40.375 inHousing Height (in):26.75 in
Drive Type:Rotating Biological Contactor DriveOutput Bore:Tapered Bushing
Reduction:TripleMaximum Output RPM:8
Maximum Output Size (in):4.9375 inHousing Material:Cast Iron
Output Shaft:ShaftOutput Torque Rating (in-lb):4264.02 in-Lbs @1750 input rpm, 1 HP in/lbs

General Specifications
UPC:662289871674Weight:1,076.00 LB
Packaged Length:26.00 INPackaged Width:32.00 IN
Packaged Height:20.00 INHTC:8483.40.1000
Country of Origin:United States of America

We would like to have this RBC gear box repaired or replaced.