The reason for this is because the minor diameters are easier to control than the major diameters. But a spline that sees low torque with lots of load. A spline that sees high torques and only a few load cycles should probably be analyzed for root shear. Depending upon the loading and life cycle requirements required of the spline, your analysis techniques will differ.
Note how the profile is designated as a 'bottom fit' spline. Designing a spline joint is not as simple as it might seem at first. I have experience with this particular 16 teeth profile to suit 3.500" shafts as it's quite common in the mining machinery sector.īelow is a spec I came up with for the shaft to mate with a class B hub (to slide when not under load). Then, based on the manufacturing methods and finished machining tolerances that those methods can achieve, you decide the final machined tolerance the manufacturer is to adhere to.Īs a basic guide I start off by referencing the 'ISO Limits & Fits' data and then refine that to suit the application. You use the internal specs (class A, B or C) as a guide for the basic dimensions. So you need to rely on experience and engineering skills to tolerance the dimensions for the shaft. It offers no recommendations for the shaft. SAE Code Shaft Diameter (D) Shaft Length (SL) Shaft Extension (TL) Key Width Spline Details. T series motor with parking brake utilizes brake pads that rotate at six times the speed of the output shaft, thereby giving the brake a 6:1 mechanical advantage. The SAE standard is derived from the tight & consistent tolerances that can be achieved when using a broach for manufacturing the internal profile. 7/8-14 UNF SAE O-Ring Port 22.6 Cubic Inch Displacement Per Rev description. Unfortunately I only have 'recommended' dimensions for the SAE 10 spline. Look at any other straight-sided spline standard that exists worldwide and it will give you dimensions for the shaft.BS, ISO, DIN, AUS, etc. The overall rugged and compact design of the Heco Model 16 provides for a long service life in a small package.You're working with one of the silliest standards an American institution has come up with.
This is significantly higher than many other power transmission systems decreasing running costs. Heco gear reducers are also highly efficient providing at least 96% efficiency. In addition Heco planetaries can be supplied with input mounting for most hydraulic motors on the market. Shop Martin TS824 at, which includes B Gear Style, 20° Pressure Angle, 24 Teeth, 8 Diametral Pitch, 3 in Pitch Diameter, 1.5 in Face Width, Reborable, w/o Keyway. We offer many different configurations to meet the needs of most industrial and mobile applications. Use of gearr reducers can eliminate components such as chain reductions, drive shaft, and load bearing axles. The Heco Model 16 is a planetary gear reducer that allow the user many more optons when designing a power train compared to other conventional systems.
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