Hyponic^® uses hypoid gearing, which is more efficient than worm gearing and quieter than bevel gearing. It is superior within the right-angle drives.

Selection is based on the actual horsepower and/or torque requirements at the output shaft.  The Hyponic® speed reducer has particularly high efficiencies over a wide range of reduction ratios, which frequently permits the use of reduced input power requirements (smaller HP motor) without sacrificing output shaft torque.  The selection procedures in our catalog will guide you in choosing the most efficient reducer for your application.

In general, reducers and gearmotors are rated for specific conditions and operating requirements of the application by the use of AGMA-defined Service Factors.  There are three AGMA load classifications for reducers: uniform (U), moderate shock (M) and heavy shock (H), and three AGMA load classifications for gearmotors: I, II, and III. Refer to our catalog for a list of AGMA load classifications. These Service Factors are used in the product selection process to adjust for the specific conditions and operating requirements of your application.

To select the proper reducer for your application, you will need to know:Application: type of driven machine
Hours of operation per day
Motor horsepower (HP) and speed (RPM)
Loading Conditions
Mounting Position 
Ambient environment (altitude, dusty, chemical, explosive, water) 
Ambient temperature and humidity 
You must also note any special environment factors or operation requirements. This information will ve important in determining your application's service factor.

The standard ratings for Hyponic^® are based on 10-hour daily service under conditions of uniform loads (equivalent to AGMA service factor 1.0).  By following the product selection process outlined in our catalog, you will determine and apply the Service Factors to compensate for severe operating conditions.

In general terms, the speeds are 1750 and 1450 RPM.  The selection tables in our catalog are based on 1750 RPM.  The reducer selection tables show ratings at 1750 RPM for Quill models, and 1750 and 1450 for C-face models.

The Hyponic^® speed reducer, by virtue of its smooth, almost frictionless operation (unlike traditional helical gears), has a thermal rating that far exceeds its mechanical capacity and all but eliminates the conventional limitations due to heat.

The Hyponic^® is standardly supplied as a shaft mount with a keyed hollow bore.  Options are available for a solid shaft with feet and a flange mounting configuration.  Since the Hyponic^® is grease lubricated as standard, it can be mounted in any position 
without modifications.

Hyponic^® speed reducers provide 250% momentary intermittent shock load capacity.  For applications with shock loads greater than 250%, consult a Sumitomo Application Engineer.

When mounting a pulley, sprocket, or sheave, mount as close to the unit housing as possible; never mount beyond the midpoint of the shaft projection to avoid undue bearing load and shaft deflection.  Never overtighten belts or chains.  Careful and accurate installation is essential for best results and trouble-free operation.  Before installing, the shafts should be checked to make sure they are parallel and level.  After mounting, alignment should be checked with a string or straight edge held against the sides of the sprocket or pulley base.  Couplings should be properly aligned to the limits specified by the manufacturer.  Check alignment prior to initial startup on coupled Hyponic® units.

The direction of shaft rotation on Hyponic reducers varies according to frame size and ratio.  Please refer to the Appendix in our catalog for specific data on the shaft rotation of various models.

Shaft tolerances will depend on the type of load and shock load of the application.  Shaft tolerance recommendations are included in the Appendix of our catalog.

A torque arm assembly is offered as an option.  The standard torque arm assembly and standard mounting positions are shown in the Appendix of our catalog.

A hypoid reducer is more efficient than the traditional worm gear reducer.  The reason why a hypoid gear is more efficient than a worm gear is due mainly to two factors:  gear tooth profile and the material it is made of.  Hypoid gear is all-steel, while worm gear uses steel and a bronze wheel (that will wear down).  Click here to learn more.

Yes, loads imposed on the slow speed shaft will vary according to the method used to connect the shaft to the driven machine.  Frequently, in addition to the torsional forces, radial (overhung) and thrust loads are applied to the slow speed shaft at the same time.  For example, coupling connections normally involve torsional forces only.  However, when power is transmitted through spur gears, belts, pulleys, or chains, both torsional and radial forces may be present.  When driving through helical or bevel gears, all three conditions (torsional, radial, and thrust load) may be referred to the reducer shaft.  The slow speed shaft and bearings must have sufficient strength to withstand these loads, and it is necessary to determine the allowable limits for each condition.  The Special Load Guidelines section in the Appendix of our catalog explains how to calculate the overhung load (radial) applied to the output shaft.

The reducer’s radial load capacities are calculated at the midpoint of the slow speed shaft extension.  Radial load capacities decrease if the center of the load is moved farther from the reducer and the values obtained must be adjusted accordingly.  Refer to the Special Load Guidelines section in the Appendix of our cagtalog for load location factors.

The Hyponic^® motor cannot be replaced because the hypoid gear is controlled as a set with the motor shaft. Contact our Aftermarket Department for replacement service.

Hyponic^® uses hypoid gearing, which is more efficient than worm gearing and quieter than bevel gearing. It is superior within the right-angle drives.