Life Improvement of Plain Airframe Bearings by Preventing Contamination

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-13-C-0262
Agency Tracking Number: N131-016-0366
Amount: $79,995.00
Phase: Phase I
Program: SBIR
Awards Year: 2013
Solicitation Year: 2013
Solicitation Topic Code: N131-016
Solicitation Number: 2013.1
Small Business Information
SAFE, Inc.
5032 S. Ash Avenue, Ste. 101, Tempe, AZ, -
DUNS: 116749289
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Lance Labun
 Project Manager
 (480) 820-2032
Business Contact
 John Backus
Title: Finance/Contracts
Phone: (480) 820-2032
Research Institution
Safe, Inc. proposes a physical shield to protect spherical bearings from the abrasive particulate. Since many rotorcraft rod-ends are installed in exposed locations, sand and dirt cause damage to the spherical bearings and their liners. By preventing these particulate from contacting the spherical ball, the shield will prevent much of the contamination damage that shortens bearing life on rotorcraft. By allowing inspection without removal or with partial removal, the shield will further reduce maintenance requirements. Incorporation of the shield concept into future bearing production can lead to increased shield life and further reduce costs. Safe"s strategy is to select a shield material that will minimize heat build-up due to hysteresis and also enable heat dissipation for whatever heat is developed due to flexure. The shield material will be selected for inherent temperature resistance and in particular, a material that is chemically stable will be chosen. In order to minimize the weight and volume of the bearing shield, Safe has created a concept which remains close to those bearing surfaces which require protection. This design strategy will minimize the impact of the shield on the assembly weight, on the flexural resistance, and on the overall bulk of the assembly.

* information listed above is at the time of submission.

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