MOTION SYSTEMS HANDBOOK
Spiroid® gear
Worm gear
Spiroid® or Helicon® gear Helicon® gear Hypoid gear
Spiral bevel gear
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list their mounting options as well as dimensional information in catalogs and websites. Lubricant, seals and motor integration: Most manufacturers can ship gearboxes filled with lubrication. However, they default to shipping units empty to let users fill them on site. For applications where there is a vertical shaft down, some manufacturers recommend a second set of seals. Because many gearboxes eventually mount to a C-frame motor, many manufacturers also offer to integrate motors onto gearboxes and ship assemblies as single units. Work with consultants and even use custom gear designs if the application needs a unique motorgearbox combination. Some combinations are more efficient. Getting a pre-engineered geamotor ensures that the motor-gearbox combination will perform to specification. Also remember that today’s custom and standard gearing aren’t mutually exclusive. Where fully custom gearboxes aren’t feasible (if quantities aren’t high enough, for example) consider working with manufacturers that sell gearboxes built to order from modular subcomponents. Otherwise, look for manufacturers that leverage the latest CAD and CAM software and machine tools to streamline postprocessing work and reduce the cost of one-offs. One final tip: Once the gearmotor has been chosen and installed in the application, perform several test runs in sample environments that replicate typical operating scenarios. If the design exhibits unusually high heat, noise or stress, repeat the gear-selection process or contact the manufacturer.
1. Spiroid and Helicon brand gearing operate on non-intersecting and non-parallel axes. Compared to traditional right-angle bevel and worm gearing, the gearcenterline offset of Spiroid and Helicon branded gearing allows for more tooth-surface contact and higher contact ratios. This boosts torque capacity and smooths motion transmission. Spiroid gearsets deliver ratios from 3:1 to 300:1 and beyond. 2. Lubricated for life with Beacon 325 premium grease, Zero-Max Crown drives feature heat-treated AGMA Class 10 spiral-bevel gears. This combination of bearing design and lubrication formulation ensures long-term, maintenance free operation for high performance, industrial applications. The drives feature long-life, precision-hardened and ground ball bearings that handle speeds to 2,000 rpm in most environments. 3.The WITTENSTEIN XP+ planetary gearbox is specially designed output for transmitting extremely high torque and can withstand high tilting torques. The output pinion on the version shown here engares a rack.
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4. Input and output on coaxial gearboxes are on the same axis. Image courtesy Neugart USA
DESIGN WORLD — MOTION
Gearing – Motion Control HB 08.18 V3 FINAL.indd 90
8 • 2018
motioncontroltips.com | designworldonline.com
8/22/18 2:24 PM