SYMPOSIA PAPER Published: 01 January 1978
STP46077S

Temporary Viscosity Loss and its Relationship to Journal Bearing Performance

Source

To determine the correlation between journal bearing performance and viscosity loss in a capillary, viscosities of eleven base oil-polymer blends were measured in a high-shear, pressurized capillary viscometer (High-Shear Capillary Viscometer, HSCV) at shear rates from 100 to nearly 1 000 000 s-1. Although low-shear kinematic viscosities do not predict bearing performance differences found by Rosenberg with the same oil blends, HSCV viscosities at shear rates near 500 000 s-1 correlate well with the bearing performance data. Differences among polymers are strongly related to molecular weight.

Author Information

McMillan, Michael, L.
General Motors Research Labs
Murphy, Chester, K.
General Motors Research Labs
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Details
Developed by Committee: D02
Pages: 63–77
DOI: 10.1520/STP46077S
ISBN-EB: 978-0-8031-6761-2
ISBN-13: 978-0-8031-6697-4