We recommend you consider the following points when selecting the proper gearmotor:
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SELECTION
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1.
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If you can accurately measure or calculate the required horsepower, select a motor frame as close as possible to the calculated value.
If the motor is too large, the corresponding gear reducer may also be larger than necessary. As such, the cost increases unnecessarily, and the extra power could damage the machinery because of over-loading.
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2.
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Determine the proper service factor from the AGMA load tables.
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3.
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Select the proper gear reducer size from the above two points, taking into consideration the output power shown in the tables.
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MOTOR
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4.
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Consult MEP if you have unusual conditions, such as ambient temperatures above 40ºC (104ºF), or special applications, such as those found in the food processing industry.
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5.
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If the motor is subject to frequent starts and stops, consult MEP to determine whether or not you need a higher insulation class or an auxiliary blower.
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GEAR REDUCER
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6.
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All MultiGear™ units come permanently filled with synthetic oil for an ambient temperature range of -40ºC (-40ºF) to 80ºC (176ºF).
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7.
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Check if the overhung load (OHL) on the reducer shaft is within the published rating. Make sure that you mount the sprocket or sheave as close as possible to the output shaft's shoulder.
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8.
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Consult MEP if there is a combination of OHL and high thrust forces.
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MOUNTING
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9.
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Design a solid, rigid mount. Construct a base plate with the same thickness as the diameter of the mounting bolts used to secure the gear reducer. A solid base reduces unnecessary strain on the reducer parts. Use shims if the base is uneven.
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LOCATION
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10.
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If you intend to use the machinery outside, in a washdown application, or in a wet environment, order a washdown/outdoor duty motor. A typical motor will not be adequate because moisture can cause bearing and winding failures. Whereas, MultiGear™ motors are ideally suited for these demanding situations. Standard features include TEFC enclosure, IP55 protection with shaft seals at both ends, Class F insulation, stainless steel hardware, stainless steel shaft, and epoxy paint.
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MAINTENANCE
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11.
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Often ignored yet extremely important is the ability for a unit to withstand the rigors of time. Maintenance can be costly and time-consuming. All MultiGear™ assemblies (motor and gearbox) are lubricated for life. In addition, motors are easily replaced in the field, with no loss of lubricant. This can significantly reduce your maintenance time and costs.
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