Life expectancy-nomogram of control unit faceing radial bearing Life expectancy-nomogram of axial bearing S1 S2 S3 x F r S1 Pressure difference: Δp = 150 bar Axial bearings are not able to receive any radial force. In order to determine service life of bearing, draw a horizontal line from the Y-axis Δp =150 bar to speed curven = 2000 rpm. By drawing a vertical line from intercept point S1 to the X-axis, you can determine the service life of the bearingLh10by approx. 60,000 hours. Gap: X = non-existent Speed: n = 2000 rpm Given: Radial load: F = non-existent Wanted: Service life radial bearing. Graph to determine service life of axial bearing: Pressure difference: Δp = 150 bar Given: Radial load: F = 0,75 kN Gap: X = 18mm Wanted: Service life radial bearing Graph to determine service life of radial bearing: To determine service life of bearing, use radial load F = 0,75 kNand gapX = 18 mm in order to find intercept point S1. By usingS1, r draw a vertical line to pressure curvesΔp = 150 bar. From this, intercept point S2can be determined. By drawing a horizontal line to speed curven = 2000 rpm, intercept point S3 is found. By drawing a vertical line fromS3 to the x-axis, you can determine the service life of the bearingLh10by approx. 127,950 hours. Speed: n = 2000 rpm 10 www.jbj.co.uk/hydraulic-motors.html #DriveLineHarmony LSHT Hydraulic Motors AE3 Series Characteristics Graphs 2 All parameters at u = 32 mm /s; Θ = 40°C; outlet = pressureless
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