Update your files quickly and easily.

March 1, 2009
Get your next project off to a fast start, no matter what it entails, by collecting design-oriented information now. Send in your response card (stitched

Get your next project off to a fast start, no matter what it entails, by collecting design-oriented information now. Send in your response card (stitched into your copy of MSD) or visit www.motionsystemdesign.com and click on Reader Service under RESOURCES to get the latest literature on these products and solutions to make your next design a success.

ACCESSORIES: Seals

Gaskets fill space between two clamped components, while elastomeric static seals rest in grooves on one component or the other to ensure tight mating. Mechanical packing, contacting radial lip, as well as non-contacting labyrinth and visco seals are dynamic seals that keep lubricants in and foreign particles out. Placed between components that move relative to one another, they are subject to wear and dynamic forces.

Special textures and helices on dynamic seals can actually pump lubricants back to their origin. Nitrile seals are low in cost; neoprene is weather-resistant; ethylene propylene resists even powerful acids and alkalis. However, excessive heat causes most synthetics to dry, crack, and fail.

ACCESSORIES: Springs and dampers

Rings and springs hold components on shafts or in a housing. Under constant loading, both can also act as spacers to compensate for radial and axial dimensional variation and to isolate vibration.

Rings and springs increase precision and predictability of load-deflection curves. By taking up additional clearance in bearings and other components, springs also decrease wear and increase life. Other uses include oil dams and oil-slinger rings.

Sponsored Recommendations

Sept. 16, 2025
From robotic arms to high-speed conveyors, accuracy matters. Discover how encoders transform motor control by turning motion into real-time datadelivering tighter speed control...
Sept. 16, 2025
Keep high-torque gearboxes running efficiently with external lubrication and cooling systems delivered fast. Flexible configurations, sensor-ready monitoring, and stocked options...
Sept. 16, 2025
Now assembled in the U.S., compact P2.e planetary gear units combine maximum torque, thermal efficiency, and flexible configurations for heavy-duty applicationsavailable faster...
Sept. 16, 2025
Safety in automation goes beyond fences and emergency stops. Learn how functional safety actively monitors and controls motiondelivering smarter protection, greater flexibility...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!