From MICROMO

earhead Construction and Use

Spur Gear Type Gearheads
Direction of Rotation
Planetary Gears

Spur Gear Type Gearheads

Spur gear type gearheads are probably the best possible choice for relatively low torque applications. They tend to be less expensive than comparably sized planetary gearheads and are likely to be quieter in operation as well. Engineers designing high accuracy positioning servos are occasionally surprised to find that many of the small gearhead series supplied by MicroMo use non-integer gear ratios, This fact is often discovered after the engineer has repeatedly tried to reconcile motor encoder counts with gearhead shaft position only to find a small but persistent position error. At first glance, the use of non-integer gear ratios appears to have no apparent purpose (with the possible exception of frustrating servo designers). There is a fundamentally sound reason for designing gearheads with such gear ratios, however, and the servo designer who has sufficient information will generally have no problems using them.

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Product Announcements
Thomson Industries Inc. - GEARHEAD EXPRESS
True Planetary® gearheads, shipped within 24 hours Thomson Micron TRUE planetary gearheads from Thomson are used in high precision motion control applications that require a high torque to... (read more)
DieQua Corporation - High Torque Servo Gearheads
The WATT Drive series provides economical motion control with a variety of inline and right angle helical, helical bevel, and helical worm designs. (read more)
maxon precision motors, inc. - Right Angle Spiroid® Gear
Designed to achieve maximum torque in minimum space maxon precision motors is pleased to announce the newest addition to our family of motion control products, the 22mm and 32mm right angle... (read more)
CGI, Inc. - 6 Tips to Read when you Need a Planetary Gearhead
When designing a motor into a motion control system, all too often the benefits of a gearhead are realized much too late. Designing in a gearhead at the end of the project will many times cause delay... (read more)
Electromate - Bayside NE34 - Spur Gearhead Products
Bayside's NEMA gearheads feature a high efficiency spur gear design, in a light, compact package. Designed to mount directly to the face of NEMA face stepper and servo motors, NEMA gearheads are ideal... (read more)
Electromate - NEW High Precision Zero-Backlash Mini Gearhead
The CSF-XHF Size 11 gearhead from Harmonic Drive LLC delivers 1.5 arc-min positional accuracy in a package size that is just 43mm (square) x 38mm long. (read more)
CGI, Inc. - Victory Planetary Gearheads
Victory Planetary Gearheads, Class-leading performance in a value-priced package. We've engineered a High Torque Gearhead and made it available at a lower price point. And you still get high quality... (read more)
 

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