Helical Shaft Mount (HSM)
Helical Shaft-Mounted Speed Reducer (HSM) is one of the most popular products in our portfolio.
Helical Shaft Mount (HSM)
- Keyless Taper-Grip® Bushing
- 25-Degrees Pressure-Angled Gears
- Integrated Backstop Option
- Heavy Duty Roller Bearings for Maximum Strength and Extended Life
- Available with CEMA Screw-Conveyor Drive Option
| Output | Taper-Grip® Bushing and Parallel Bore |
| Mounting | Hollow Shaft |
| Sizes | 13 frame sizes |
| Ratio | 5:1 to 25:1 |
| Power Range | 1/4 to 300HP (0.20kW to 220kW ) |
| Torque Capacity | Up to 389,432 lb-in (44,051 N.m) |
| Motor Standard | CE, JIS, NEMA, IEC, UL, CSA |
Helical Shaft-Mounted Speed Reducer (HSM)
Helical Shaft-Mounted Speed Reducer (HSM) features patented keyless, steel Taper-Grip® bushing for easy mounting.
IT'S ALL IN THE GEARS!
LESS WEIGHT, MORE TORQUE
Documents
FAQ
Do you have questions about the Helical Shaft Mount (HSM)? Below are some of our most commonly asked questions or you can view our Support area under Knowledge for more frequently asked questions and answers.
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
What accessories are used with the Helical Shaft Mount and what application do they work best with?
There are many accessories for use with the Helical Shaft Mount (HSM). Our patented Taper Grip Bushing is well suited for any application. A motor mount, backstop, torque arm, ABS belt guard, belts, breathers, sheaves and harsh duty seals are all accessories that work well with the HSM for any application. Also available are screw conveyor shafts, screw conveyor adaptor kits and screw conveyor seal kits.
Are HSMs suitable for mixer applications?
Yes, only if the mixer’s impeller is not attached to a long shaft. The impeller is subjected to radial loads, and the HSM bearings provide the shaft support. The HSM’s compact bearing span makes it unsuitable for supporting radial loads applied at long distances from the reducer.
Are non-standard bores available for the Taper Grip® bushing?Are non-standard bores available for the Taper Grip® bushing?
Yes. Consult your Sumitomo representative for the availability of your bore size.
Are HSM reducers suitable for outdoor use?
Yes. Provide as much information as possible to your Sumitomo representative when discussing outdoor HSM applications. Corrosive, abrasive, hot, and cold environments each require a different type of optional seal.