Series 90 Axial Piston Pumps Technical Information Features and options

Adding tandem mounted auxiliary pumps and/or subjecting pumps to high shock loads may result in excessive loading of the mounting flange. The overhung load moment for multiple pump mounting may be estimated as shown in the accompanying figure.

Overhung load example

Estimating overhung load moments

W = Weight of pump (kg)

L = Distance from mounting flange to pump center of gravity (m)

(refer to pump installation drawings)

MR = G R (W 1L1 + W2L2 + ... + W nLn)

MS = G S (W 1L1 + W2L2 + ... + W nLn)

Where:

MR = Rated load moment (N•m)

MS = Shock load moment (N•m)

GR = Rated (vibratory) acceleration (G’s) * (m/sec²)

GS = Maximum shock acceleration (G’s) * (m/sec²)

* Calculations will be carried out by multiplying the gravity (g = 9.81 m/sec²) with a given factor. This factor depends on the application.

Allowable overhung load moment values are shown in the accompanying table. Exceeding these values requires additional pump support.

Allowable overhung load moments

3 -POSITION (FNR) ELECTRIC CONTROL