The HDR Series worm gear reducers are
used in low to moderate horsepower
applications to reduce speeds and increase
torque. Worm gear reducers are available in
direct or indirect drive, direct drive models
are 56C or 145TC flange mount with either right, left
or dual output shafts or a hollow bore
output. The indirect drive models are shaft
input-shaft output boxes for use with
sprocket or pulley drive systems. They
provide an effective low cost solution to
speed reduction and increased torque, with
higher tolerances for shock loading than
helical gear reducers.
In order to select a gearbox
you will need to determine the required
torque and service factor for the application.
Click on "Specs" above for a table that will assist in
determining the service factor. For service
factors above 1.0, multiply the required
torque by the service factor.
Use the Part Number Builder (below the ordering table) to find additional models
† All dollar amounts on this site are shown in US currency. Note: Mounting base comes complete with bolts. Ordering Example: (1) HDRS133-5/1-R 5:1 ratio, 350 RPM shaft input-shaft output gearbox with 1.33" box size, $116.00
Part Number Builder
Build Your Part Number Below
Input Type select from: F for Flange Input S for Shaft Input
Box Size - Distance From Center Line of Input Shaft to Center Line of Output Shaft select from: 133 for 1.33in 154 for 1.54in 175 for 1.75in 206 for 2.06in 237 for 2.37in 262 for 2.62in 325 for 3.25in
Ratio select from: -5/1 for 5 to 1 -10/1 for 10 to 1 -15/1 for 15 to 1 -20/1 for 20 to 1 -30/1 for 30 to 1 -40/1 for 40 to 1 -50/1 for 50 to 1 -60/1 for 60 to 1
Output Type select from: -R for Right-Hand Shaft -L for Left-Hand Shaft -DE for Dual Shaft -H for Hollow Bore
Input Flange Type select from: Nothing(leave field blank) for Shaft Input -56C for 56C Flange -145TC for 145TC Flange
Note: All combinations may not be valid, check spec sheet for valid part numbers.
HDR Series - Installation-Maintainance Manual