These features make the A Series gearbox ideal for easy Marley® replacement and reliable cooling tower operation.
- Direct replacement design supports Marley® right angle gearbox interchange.
- Identical mounting dimensions reduce the need for tower structure modifications.
- Matching gear housing foot patterns simplify installation and alignment.
- Same input shaft diameters and keyways allow existing couplings and drive shafts to remain in use.
- Reduction ratios stay within ±2% of Marley® gearbox ratios.
- Close ratio matching helps avoid costly fan blade pitch adjustments.
- Double reduction gearing supports high-torque cooling tower fan applications.
- Spiral bevel gear stage delivers smooth right angle power transmission.
- Factory noise and vibration testing supports dependable gearbox performance.
These specifications define the A Series gearbox’s replacement compatibility, performance capacity, and operating requirements.
- Product Series: Amarillo A Series Double Reduction Gearbox
- Gear Drive Type: Double Reduction Right Angle Gear Drive
- Manufacturer: Amarillo Gear Company
- Primary Use: Cooling Tower Fan Drive Replacement
- Replacement Type: Direct Marley® Right Angle Gearbox Replacement
- Compatible Replacement Models: A20, A22, A27, A32, A34, A36, A38/A40
- Marley® 32 and 3200 Series Replacement: Amarillo A32
- Marley® 34 and 3400 Series Replacement: Amarillo A34
- Marley® 36 and 3600 Series Replacement: Amarillo A36
- Marley® 38 and 3800 Series Replacement: Amarillo A38
- Ratio Accuracy: Within ±2% of catalog ratios
- Service Factor: 2.0 for cooling tower fan service
- Rating Standard: AGMA and CTI recommended service ratings
- Motor Speed Rating Basis: 60-cycle electric motor speeds
- Bearing Life: L10a life exceeding 100,000 hours under nominal operating conditions
- Housing Type: Heavy-Duty Cast Housing
- Factory Testing: Noise and Vibration Testing Under Load Profiles up to 500 HP
Estimated Price Range: $20,011.99 to $35,781.99
