Helical Shaft Mount (HSM)

Helical Shaft-Mounted Speed Reducer (HSM) is one of the most popular products in our portfolio.

Sumitomo 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	0.20kW to 220kW
Torque Capacity	up to 44,051 N.m
Motor Standard	CE, JIS, NEMA, IEC, UL, CSA

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Helical Shaft-Mounted Speed Reducer (HSM)

Helical Shaft-Mounted Speed Reducer (HSM) features patented keyless, steel Taper-Grip® bushing for easy mounting and as well as traditional keyed hub option

IT'S ALL IN THE GEARS!

0.01 %

Warranty Claims

1 Million +

Units Sold

80 Years

of Experience

LESS WEIGHT, MORE TORQUE

Intergral Pinion

Robust, integrated input shafts and pinions providing reliability and durability

Taper Grip Bush

Simple keyless mounting and easy removal

Case Design

Gear case is manufactured from grey cast iron, and is precision bored and doweled to ensure accurate assembly.

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.

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. Contact your local representative for more information.

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?

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.