HSM Shaft Mounted Speed Reducer - Sumitomo Drive Technologies

6
How to Select
How to select an HSM Speed Reducer
Step 1: Collect data about your application
Before starting you need to know the:
• Application (e.g. Conveyor, Mixer, etc.)
• Hours of Operation per day
• Motor Horsepower (HP)
• Desired Output Speed
Step 2: Find the Load Classification of your application
Use the AGMA Load Classification Tables on page 8, based on the application
and number of working hours per day.
Step 3: Select an HSM Speed Reducer Unit Size
Refer to the Speed Reducer Selection Tables for your Classification (I, II or
III). Select the Unit Size based on the application’s Motor Horsepower (HP)
and Output Speed (RPM). Determine the Unit Size and the Nominal Ratio.
Step 4: Select a Bushing
Use the tables on the right to configure a Bushing model number.
How to select an CEMA Screw Conveyor Drive (Optional)
How to select a Belt Drive (from third-party vendor)
Step 1: Calculate the Input Shaft Speed
Multiply the Output Speed by the Exact Ratio
(from page 53 or 55,
based on Speed Reducer Size)
Output Speed x Exact Ratio = Input Shaft Speed Example: 48 x 23.235 = 1211 RPM
Step 2: Calculate the Belt Drive Ratio
Divide the Motor Speed by the Input Shaft Speed.
Note: The selection table ratings are based on a starting load or
momentary overload of:
2 times for Class I
2-3 times for Class II
4 times for Class III
If the application peak loads will exceed these values, select a Speed
Reducer from the next higher class of service, or consult Sumitomo
for exact Power Ratings data.
To select a Screw Conveyor Drive Shaft Assembly and Mounting
Adapter, you will need to know the Unit Size (from Step 3 above)
and the Screw Diameter for your application.
Refer to the Screw Conveyor Selection Table (page 48)
to make this
selection, and to determine the Shaft Diameter (for installation purposes).
Motor Speed/Input Shaft Speed = Belt Drive Ratio Example:1750 / 1211 = 1.45:1
Use this selection data to
specify a Belt Drive from
a belt drive vendor
Step 3: Determine the Minimum Input Shaft Sheave Diameter
Refer to the Sheave Diameter Table on page 50. Based on the HSM Speed Reducer Unit Size selected, and the Output Speed RPM.