Elevator Leg Spout Capacities

When determining the required diameter of spouting, consider the following: Material flow characteristics, moisture content, cleanliness of material (no trash), spouting angle, speed of material entering the spout, possible bottlenecks created by distributors, elbows or other devices in the system.

'*Note: The above information should be used as a guideline suggestion only.  No liability is assumed for its use. All considerations mentioned above will alter spout capacity and must be allowed for. Spouting for ground feed and other fluffy materials should not be set at less than 50 degrees. Some of these materials have unusual characteristics. Spouting for almost all materials should be vented if the spout angle is 55 degrees or more.

Hydraulic Motor Size vs. RPM Calculation:

Some useful formulas are listed below for figuring out how to size a hydraulic motor for your auger or other grain handling equipment.

                Gallons per minute of supply x 231
RPM =   Cubic inches of motor displacement

                                 Gallons per minute x 231
Motor cubic inches =              RPM

                            RPM x cubic inches of motor displacement
GPM required =                          231


PTO Shaft
A common question is, "How long can I expect my PTO shaft to last?"  While there are many factors that contribute to that answer, there are a few rules of thumb that should be kept in mind.

Grease! Grease! Did I mention grease?  The more often the better.  The number one thing you can do to extend the life of your PTO shaft is to grease it often.  Want to make sure it gets done?  Hang a grease gun on the equipment with a PTO shaft.

Some information regarding how operating angle contributes to the life expectancy of a PTO shaft:
At 540 RPM and transmitting 40 HP, a category 4 PTO shaft at 22 degrees has a 12% decrease in life expectancy when the angle is changed by 3 degrees.
At 540 RPM and transmitting 24 HP, a category 3 PTO shaft at 22 degrees has a 22% decrease in life expectancy when the angle is changed by 6 degrees.