All-Steel Hypoid Gears
In comparison, worm gear drives use softer, bronze gearing, which shortens service life, and they operate at efficiencies that decline as ratio increases. Hypoid-gearing...
Right-Angle Gearboxes Using Hypoid Gears
Still using a worm gear and trying to improve the overall efficiency of your system? Purchasing a high efficiency NEMA premium motor may improve...
Gear Accuracy Vs. Manufacturing Costs
The required gear accuracy is directly related to the costs of manufacture. The highest accuracy available by current processes is considered to be AGMA...
Pay Attention to the Teeth During Sequence of Operations
When the face width exceeds 24 inches, a minimum of three supporting ribs or webs is required. The rim thickness must provide full support...
Properly Designed Blanks
When a gear is produced by machining it must begin with a blank that is properly designed and produced in full accordance with the...
Cycloidal teeth must not only be accurately spaced and shaped; their wheel centers must...
In 1900, Wilfred Lewis discussed gear tooth forms at an ASME meeting: "About 30 years ago, when I first began to study the subject,...
The spiral tooth form, as with the helical gear, provides a smoother and higher...
An analogy can be drawn between a spur and helical gear and the straight and spiral bevel gear. The pitch surfaces and the conjugate...
There are four standardized AGMA systems of bevel gear tooth proportions: 20° straight bevel,...
In this month’s edition of Tooth Tips, let’s take a look at bevel gears at angles other than 90º.
When the sine of the angle...
The choice of straight bevel tooth forms limited to those forms that can be...
Continuing our discussion of bevel gears, let's take a look at the design of the straight bevel tooth. In Figure 1, it can be...
Accurate thickness, taper, gear blanks, proportions, other specifications necessary for maximum gear performance
Gear Blanks
Bevel gears are almost always produced from shaped blanks. Therefore, more care and attention has to be taken in the selection of the...
Bevel gears, pressure angles and their relationship
In this edition of “Tooth Tips,” I’d like to examine straight-tooth bevels, the oldest form of a true bevel gear. It is one of...
Exploring bevel gears and techniques for producing gears to exact specification
For some hundreds of years angled gearing has been used to transmit power between non-parallel shafts. In those olden days the power sources were...
Even environment and location are important to determine application stresses on gears
It was once a simple matter to select a gear reducer from a catalog. In order to allow for the application and the inaccuracy...
An increasing demand for minimal backlash has been created by the precision required for...
In the present day a precision reducer's backlash is typically three to six arc minutes, and on an eight-inch pitch diameter that is a...
When considering the gear mesh, backlash is high on the list of misunderstandings
Among the many considerations when considering the gear mesh, backlash is high on the list of misunderstandings. Backlash has a cyclically fluctuating value between...
Proper lubrication reduces frictional resistance and heat, improves the gear efficiency
Critical to a gear's operation is the lubrication type and method of application. Lubrication is a science and for new applications consulting with the...
Worm gear tooth forms, including the five standardized forms produced by milling or grinding...
There is a wide choice in tooth forms, each form with its own share of merits and demerits depending on the application. Several forms...
Requirements for more-intricate gear designs call for a knowledge of the best manufacturing processes...
The gear blank design is frequently influenced by the cost. The ideal blank is finished with the final bore perpendicular to the face and...
As gear requirements grow more intricate, a knowledge of the best processes for different...
The universal demand for gears necessitates that they be produced in many geometric forms, numerous materials, and in a wide range of quality levels...
Wrapping up a discussion of the different types of worm gears and the wide...
In the early part of the 1920s the automobile reached high production rates using rear axle drives with worm gear ratios of 4:1 and...
