A P P L I C A T I O N Air-Cooled Heat Exchanger Belt Drives M A N U A L 17525 September 2005 The Driving Force in Power Transmission®

Table of Contents Description Page ACHE Applications Safety Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Application ‘Alerts’ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3 Preventative Maintenance Tools . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5 ACHE Belt Drives Poly Chain GT2 Belt Specifications . . . . . . . . . . . . . . . . . . . . . . . . .6 Poly Chain GT2 Standard Lengths . . . . . . . . . . . . . . . . . . . ....

Safety Policy WARNING! Be Safe! Gates belt drive systems are very reliable when used safely and within Gates application recommendations. However, there are specific USES THAT MUST BE AVOIDED due to the risk of serious injury or death. These prohibited misuses include: Primary In-Flight Aircraft Systems Do not use Gates belts, pulleys or sprockets on aircraft, propeller or rotor drive systems or in-flight accessory drives. Gates belt drive systems are not intended for aircraft use. Lift Systems Do not use Gates belts, pulleys or sprockets in applications that depend solely upon the belt to raise/lower,...

ACHE Application 'Alerts' Air-Cooled Heat Exchangers are pres- ent in many industries including Power Maximizing belt life means avoiding the following pitfalls: Incorrect installation practice, weak framework, and loose mounting bolts are common contributors to drive misalign- ment. See that bolts are properly secured and that the motor does not move. Ensure proper tracking of a belt drive by aligning the sprockets after ten- sion has already been applied to the belt. Make sure the entire belt width is riding on the sprocket. Use a laser alignment device or straight edge to align the sprockets....

ACHE Application ‘Alerts’ Improper Belt Tension: Field problems are often related to belt tension. Low belt tension can result in self-tensioning or ratcheting. With self-tensioning, the belt’s teeth begin to show hook wear. With ratcheting, the tensile members are compressed and weakened. Tooth shear or straight-across breaks are often the end result of low belt tension. Ensure proper tension is applied during installation. The use of a Sonic Tension Meter is recommended for quick and accurate tension measurements. Additional Recommendations: • Check tension, alignment, and inspect the hardware...

Possible Remedy Unusual noise Misaligned drive Too low or high belt tension Backside idler Worn sprocket Bent guide flange Belt speed too high Incorrect belt profile for the sprocket Subminimal diameter Excess load Correct alignment Adjust tension to recommended value Replace sprocket Replace sprocket/flange Redesign drive Use proper Gates Poly Chain* GT®2 and PowerGrip® Redesign drive using larger diameters Redesign drive for increased capacity Tension loss Weak support structure Excessive sprocket wear Fixed (nonadjustable) centers Excessive load Use alternate sprocket material Use inside idler...

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Gates Poly Chain® GT 2 Belt System Specifications To satisfy a wide range of loads, speeds and applications, Poly Chain GT2 Belts and Sprockets are made in a selection of sizes, capacities and The three principal dimensions of a belt are: pitch pitch length width Belt pitch is the distance in millimeters between two adjacent tooth centers as measured on the pitch line of the belt. Belt pitch length ism the total length (circumference) in millimeters as measured along the pitch line. The theoret- ical pitch line of a Poly Chain GT2 Belt lies within the tensile member. The three principal dimensions...

Gates Poly Chain® GT 2 Belt Standard Line Stock Sizes Dimensions are given in inches and millimeters. Inches are shown in black type. Millimeters are shown in blue type. JiS^P. The Driving Force in Power Transmission

PowerGrip® GT 2 Belt Drives Gates 8mm, 14mm pitch PowerGrip® GT®2 belts have helically-wound fiberglass tension members embedded in a Neoprene®* body with the belt teeth faced with a tough wear-resistant nylon fabric. The three principal dimensions of a belt are Pitch Pitch Length Width Belt pitch is the distance in millimeters between two adjacent tooth centers as measured on the pitch line of the belt. Belt pitch length is the total length (circumfer- ence) in millimeters as measured along the pitch line. The theoretical pitch line of a PowerGrip® GT2 belt lies within the tensile member. The...

PowerGrip® GT 2 Belt Drives The following tables list the stock PowerGrip" GV2 belts and their dimensions. 8mm Pitch PowerGrip® GT®2 Stock Belt Lengths 14mm Pitch PowerGrip® GT®2 Stock Belt Lengths 8MGT Stock Belt Widths 14MGT Stock Belt Widths JiS^P. The Driving Force in Power Transmission

ACHE PowerGrip® GT 2 Belts PowerGrip GT2 ACHE belts are available in 14mm pitch. A single twist cord helps prevent the belt from moving downward on vertical shaft ACHE applications. Stock belts are constructed with a "Z" twist tensile member. Standard Tensile Member Belts are normally produced with an "S" and "Z" twist cord construction (right and left hand) for neutral tracking. Neutral tracking does not mean the belt will run in the center of the pulley/sprocket, but rather lessens the side thrust. "Z" Twist (Left) Tensile Member Designed for special tracking purposes so belt will ride to one...

ACHE Sprockets Q.D. Air-Cooled Heat Exchanger (ACHE) Sprockets ACHE sprockets are lighter weight than standard TL sprockets. The reduced length through bore allows for closer mounting of the sprocket on the shaft, reducing overhung loading. QD bushing designs allow for easier installa- tion of horizontal drives where overhead mounting is necessary. The 'F' series sprockets are designed for speeds 14mm Pitch Poly Chain" GT"2 ACHE - Q.D. Sprockets For 20mm Poly Chain" GT 2 Belts Taper-Lock* sprockets are also available for most sizes and widths. JiS^P. The Driving Force in Power Transmission