HEDCON® Worm Drive & Reducer
High-efficiency, high-strength double-enveloping worm reducer
- Low friction coefficient on the gearing for high efficiency.
- Powered by long-lasting worm gears.
- Minimum speed fluctuation with low noise and low vibration.
- Lightweight and compact Worm drive relative to its high load capacity.
| Output Shaft | Hollow shaft, Solid shaft |
| Output Shaft Direction(s) | Horizontal, vertical upward, vertical downward |
| Frame Size | 11 sizes |
| Reduction Ratio | 5:1 - 100:1 |
| Rated Torque | Up to 726,646 lb-in (82,100 N⋅m) |
726,646
lb-in
Maximum Rated Torque
11
sizes
Available
Long
life
Powered by long-lasting worm gears
Product Features
High Load Capacity
The hourglass worm gear allows the entire tooth surface on the worm to engage effectively against a larger area of the wheel gear, resulting in greater load capacity.
High Efficiency
This worm drive is highly efficient resulting from the large angle between the line of contact and the sliding direction. As such, a lubricant film is easily formed on the tooth surface, resulting in a small friction coefficient on the gearing.
Long Life
The wheel is manufactured of high quality carburized steel material and special phosphor-bronze casting to provide high wear and seizure resistance, resulting in long product life.
Low Noise / Low Vibration / Minimum Speed Fluctuation
With more gear teeth in mesh, as well as a precise tooth profile, quiet operation is achieved while attaining less speed fluctuation.
Compact and Lightweight
High-rated value and compact worm gear design relative to its high load capacity.
Self-Locking Feature
When the reduction ratio surpasses 50, safety is ensured through our self-locking feature, in combination with the motor brake.
Precision Level (Low Backlash)
Can be manufactured to low backlash specifications.
Direct Connection to Cyclo Reducer
Higher reduction ratios can be manufactured with our Cyclo® Reducer connected directly at the input stage.
I don’t like the turnbuckle torque arms and sometimes have reversing applications they don’t work well for, do you have another option?
Yes, we have 6 different torque arm options to make your installation easy.
What if I need to change the backstop rotation?
No problem, your Sumitomo rep can assist with that, we can instruct you how, or you can send it to us to do.
Can I adjust the speed with a direct drive like I can with a belt drive?
Not by changing a sheave size since that component is eliminated, but there are things to consider…
- How often are you really changing the speed?
- The flexibility of changing a sheave size also puts your system at risk. Are you overspeeding beyond the reducer's capabilities? Are you slowing down too much and causing the backstop spragues to drag and wear?
If you are utilizing a VFD, that can control your speed.
- If you find out you truly need to change your speed, our BBB is the only direct drive on the market that has a Cyclo cartridge that could be changed to change your overall speed eliminating the need for a whole new reducer. Work with your Sumitomo rep to consider this.
I don’t have a very long shaft, can I still replace a belt drive with a direct drive?
Yes, if our standard Taper Grip Bushing requires more shaft than you have, we have a new Taper Grip Bushing option that needs an average of ½ the shaft length. When we size up the reducer you need, we can tell you how much shaft length you need for both options.
What should be some features or upgrades I should consider for the Aggregate, Sand and Cement industries?
Taconite Seals, Severe Duty or Desiccant Breather