- Parts & Renewals
- Cooling Tower Products
- Pumping Applications
- Marley® Drop-In
- Spiral Bevel Gears
The Single Reduction “A” Series Gear Drives for cooling towers from Amarillo Gear Company are designed as direct replacements for the Marley® Cooling Tower line of right angle drives. Since there are no differences in the critical mounting dimensions, the “A” Series will make Marley® gear drive replacements easy. Gear housing foot patterns are identical, eliminating expensive gear drive mechanical support modifications.
The input shaft diameters and keyways are the same, so existing couplings and drive shafts do not have to be replaced. All service ports are also easily accessible. Reduction ratios are within ±2% of the Marley® reduction ratios, eliminating the need to make costly fan pitch adjustments.
Amarillo “A” Series Model replaces
20, 20T, 1800, 2000*
*= Provide Amarillo Gear Company with dimensions of the input and output shafts for possible interchange modifications to the Amarillo “A” Series model selected.
All ratios shown in the catalog are reducing and defined as the ratio of the input speed to the output speed. Ratios shown are exact within ±2%. For your particular model and ratio, please contact the factory to confirm selection and availability.
AGMA and CTI recommend a minimum service factor of 2.0 for gear drives in cooling tower fan service when driven by electric motors or steam turbines. All ratings are service ratings and include a 2.0 service factor unless otherwise noted. Ratings listed in the catalog are for 60 cycle electric motor speeds. Ratings for speeds less than 1,750 rpm are proportional to the rated speed. Contact the factory for recommendations when the driver speed exceeds 1800 rpm or falls below 450 rpm.
Normal rotation is both shafts clockwise as shown in the illustrations in the catalog. Occasional use with both shafts rotating counterclockwise is permissible (unless the gear drive is equipped with Amarillo Gear’s optional non-reverse backstop).
All Amarillo Single Reduction “A” Series Gear Drives drives may be furnished, upon request, with a cylindrical output shaft (no-taper). Please contact factory for pricing and availability.
Rotational schemes with the shafts rotating in opposite directions are available on special order.
Marley® typically has offered up to three output shaft lengths for the Series 20, 22, 2000, and 2200. All typically feature a ½” per foot taper. They are noted as either Standard (which is generally the same as the Amarillo “A” Series standard catalog offering), Type CC (which is slightly extended in length), and Type CC2 (greatly extended in length). If you do not know which output shaft your gear box has, please complete the worksheet below and contact Amarillo Gear for proper selection or provide a certified dimensional print of your existing gear drive. A dimensional print of an Amarillo “A” Series drive with proper output shaft dimensions can be provided before ordering if requested.
Length of taper (D)________________ Keyway size (F)______________________
Small end diameter (E1)____________ Keyway parallel to centerline or taper_______
Large end diameter (E2)____________ Overall Height (C)_____________________
Amarillo Gear Company LLC (“Amarillo”) warrants that the Amarillo Right Angle Fan Drive (“Product”) will be free from defects in material and workmanship for a period ending on the earlier to occur of twelve months from the date of installation or eighteen months from date of shipment from Amarillo’s factory.
This Limited Warranty shall be void if the Product is not installed, operated, serviced and maintained in accordance with Amarillo’s published instructions for the Product or if transmitted loads are not within the published limits for the Product. In addition, this Limited Warranty shall be void if the Product is in any way subjected to: (i) improper storage; (ii) accident, damage, abuse or misuse; (iii) abnormal operating conditions or applications; or (iv) repair or modification by Buyer or any third party without the prior written consent of Amarillo.
With respect to any defect in material or workmanship covered by this Limited Warranty, if Buyer notifies Amarillo of such defect in writing within the warranty period, Amarillo will repair or replace, at its sole option, any such defective Product or part. This shall be Buyer’s exclusive remedy. Any claims not made within the warranty period are deemed waived by Buyer. Before returning any Product or part hereunder, Buyer must contact Amarillo for a Return Goods Authorization number and to arrange for transportation. Amarillo will not pay any transportation costs incurred without its prior approval.
In no event will Amarillo be liable, whether in tort, contract or otherwise, for any bodily injury, death or property damage resulting from or in any way arising out of any goods or services provided by Amarillo or their sale, use or manufacture. Amarillo shall be not liable for any costs for removal or re-installation of the Product. IN NO EVENT SHALL AMARILLO BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES.
No change in any provision in this Limited Warranty may be made without the prior written agreement of an authorized officer of Amarillo.
THIS IS AMARILLO’S ONLY WARRANTY. AMARILLO MAKES NO OTHER WARRANTY OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR ANY PARTICULAR PURPOSE ARE HEREBY DISCLAIMED AND EXCLUDED BY AMARILLO.