Frequently Asked Questions
Do you have questions about our products or services? Below are some of our most commonly asked question.
What is the shock load capacity of the precision Cyclos?
The Servo 100, Servo 6000, and Fine Cyclo reducers can withstand momentary shock loads as high as 500% of the rated torque.
How can I be sure that a Paramax is right for my application?
Please consult a Sumitomo Sales Representative. They will review your application and provide an optimum Paramax selection.
What are backstops?
Backstops are safety devices and have to be inspected at regular time intervals. The periodical inspection is to be carried out by authorized personnel. The frequency of the inspection depends on the type of application. Please refer to the P4 service manual for recommended inspection intervals
What's new about the P4 Single Stage shaft height and why is this important?
The P4 Single Stage gear units have been designed with an enlarged housing and an increased shaft height. The vast cooling surface raises the thermal rating and the larger oil sump assures a longer oil life. In combination with the service cover, a cooling coil can be fitted, without having to disassemble the complete gear unit.
The increased shaft height also results in the input shaft being better positioned versus the shaft height of the electric motor.
As such, motor and gear unit will be equally affected by thermal expansion and the static alignment is not disturbed during operation.
What kind of torque arm do you supply? At what position should it be mounted?
The standard torque arm assembly is shown in the Dmensions section of our catalog. The torque arm should be mounted at 90 degrees to a line from the point of attachment to the reducer and the center of the output bore with up to 30 degrees plus or minus variance. It should always be mounted in tension, not compression. A bracket type torque arm is also offered as a non-stock option.
Why is a Taper-Grip® bushing used? What is its material?
The Taper-Grip® bushing is integral to the Cyclo® HBB and provides for easy mounting and removal to and from the shaft of the driven machine. Because it requires no keyway, the shaft isn't weakened and maximum torque is transmitted. With the added strength of steel, the Taper-Grip® bushing can be used in reversing and/or high start-up applications. The steel Taper-Grip® bushing can be used on all
Taper-Grip® products.
What are the thermal limitations of the Cyclo® HBB?
The Cyclo® speed reducer, by virtue of its smooth, almost frictionless operation (unlike traditional helical gears), has a thermal rating that far exceeds its mechanical capacity and all but eliminates the conventional limitations due to heat.
What are the standard input speeds?
In general terms, the speeds are 1750 and 1165 RPM. The selection tables in our catalogue are based on 1750 RPM. When other input speeds are used, the horsepower and torque ratings will vary.
What do I do if my application has particularly severe operating conditions?
The standard ratings for Cyclo® HBB are based on 10-hour daily service under conditions of uniform loads (equivalent to AGMA service factor 1.0). By following the product selection process outlined in our catalog, you will determine and apply the Service Factors to compensate for severe operating conditions.
What are service factors and how are they used?
In general, reducers and gearmotors are rated for specific conditions and operating requirements of the application by the use of AGMA-defined Service Factors. There are three AGMA load classifications for reducers: uniform (U), moderate shock (M), and heavy shock (H). Refer to our catalogue for a list of AGMA load classifications. These Service Factors are used in the product selection process to adjust for the specific conditions and operating requirements of your application.