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Homework1_brg_solnF07

# Homework1_brg_solnF07 - Homework#1 Name Calculate the load...

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Homework #1 Name_________________________ Calculate the load capacity and drag torque for a 50 mm diameter, 55 mm long bearing that has a radial clearance of 0.1 mm, a minimum clearance of 0.025 mm that is rotating at 3000 rpm. The lubricant is SAE 30 oil supplied at 65 C. Use the flat bearing model and assume no side flow. Si viscosity 2.20E-02 Pa s 65C speed 3000 rpm radius 25 mm h1 0.1 mm h2 0.025 mm L 39.269908 25%,mm Length 55 mm surf speed 7.8539816 m/s
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Unformatted text preview: slope 0.0019099 load/m 52949.366 N/m load 2912.2151 N drag/m-175.9829 N/m drag-9.679058 N torque-0.241976 N m ⎥ ⎦ ⎤ ⎢ ⎣ ⎡ ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + − + ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ − = ⎥ ⎦ ⎤ ⎢ ⎣ ⎡ ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + − − ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ = 2 1 2 1 2 1 2 1 2 1 2 1 2 3 ln 2 2 / 2 ln 6 / h h h h h h U width Drag h h h h h h U width Load α µ...
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• Fall '07
• EISCHEN
• International System of Units, mm mm Mm

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