SPX Proof in Performance

Marley® Geareducer®

Lower Maintenance Costs

Marley® System 5™ Geareducers® require only one oil change every 5 years compared to others that require
oil changes multiple times each year.

Long Life Bearings are Standard

All Marley bearings have 100,000 hours minimum L10A service life. Other manufacturers' bearings have half the life of Marley bearings.

Lower Sound

Third party* verification of 5 to 7 dBA reduction compared to other gearbox manufacturers. A 7 dBA reduction translates to 80% lower overall sound.**

Cooler Operating Temperatures

Marley Geareducers have up to 47% greater surface area than other manufacturers, along with larger oil passageways to ensure maximum service life.***

Integral Pinion Shaft

Marley Geareducers have a single piece spiral bevel gear head integrated with the pinion shaft for maximum strength, while other manfucturers will use multiple piece pinion arrangements.

Lower Installation Costs

Marley does not require external vent lines, while others do.

Excellent Availability

Marley stocks over 75 models with over 200 assembled Geareducers ready to ship.

Value Added Options

Low level oil indicator switches, anti-reversing devices, oil seal options.

  *  

National Technical systems (NTS) in 1998. Concurrent testing was conducted on Marley and Amarillo gear speed reducers in accordance with SAE J2101 at various speeds and loads.

 **  

Lw = 10 log 10 (W/10^-12) dB)

***  

Amarillo A36 vs. Marley 36; Amarillo surface area based on actual measurements of case with estimations given to account for curved faces. Result is 5,173 sq. in. surface area for Amarillo A36 vs. 7,586 sq. in. for Marley 36.

Head-to-Head Comparison

Marley   Amarillo®
Marley System 5 Geareducers allow you to operate 5 years before changing the synthetic oil. SINGLE REDUCTION OIL CHANGES Original oil should be replaced after just 500 hours or 4 weeks of operation. Afterwards, intervals of 2 or 3 months may be required for a very moist atmosphere*, resulting in up to $3,636 more in annual oil change costs
Oil should be replaced every 3,000 hours DOUBLE REDUCTION OIL CHANGES Original oil should be replaced after just 500 hours or 4 weeks of operation. Afterwards, intervals of 2 or 3 months may be required for a very moist atmosphere*, resulting in up to $1,419 more in annual oil change costs
Geareducer bearings are all 100,000 hours minimum L10A service life

Bearing life

Meets CTI minimum of 50,000 hours of bearing life**, resulting in up to $15,214 or more in replacement costs
Marley 32.2 is 87 dBA (7 dBA less than the Amarillo A32, which translates to 80% lower sound) GEAR SOUND
(BAsED ON THIRD PARTY TEsT REsULTs) 		Amarillo A32 is 94 dBA
Marley 36 has 47% more surface area and larger oil passageways than the Amarillo A36, to ensure maximum service life Temperature Amarillo A36 has 47% less surface area than Marley 36 along with smaller oil passageways
Marley Geareducers have a single piece spiral bevel gear head integrated with the pinion shaft for maximum strength INTEgRAL PINION Amarillo A36 has a keyed gear for connection to the pinion shaft, resulting in multiple components and increased stress concentrations
Geareducers do not require an external vent line Vent Line An external vent line is required in "wet towers"*
 *   Per Operation and Maintenance Instructions for Amarillo Cooling Tower Drives OMC 1/11
**   Per Amarillo Fan Drive Catalog CT 05/12