Predicting Life on Through Hardened Steel Rack and Pinion for Jacking Applications in the Offshore Industry


It is well known in the industry that, according to AGMA and ISO gear calculation methods, the contact stresses in rack and pinion systems for jack up applications exceed the permissible limits by a factor of 3 to 6. However, these applications have been in service without any failures for more than 20 years. This paper will outline the process of the analytical evaluation of a specific design and validate it with systems currently in service.
ISBN: 1-55589-736-9
Pages: 14
Authors: Adrian Nowoisky
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