Operating temperatures consistently above 160°F promote chemical reactions that change the properties of the oil. Effects of high temperature are listed below: 1. Oxidation of…
Typical construction for cylinders used in industrial applications is shown in Fig. 7.18. The seals are a key feature, as is the rod wiper. Dirt…
Standard cylinders are not designed to take a side load. Care must be taken to ensure that binding does not occur during extension or retraction.…
Cylinder manufacturers typically classify their products as heavy duty, medium duty, and light duty. Pressure ratings up to 6000 psi are available. Some manufacturers build…
The types of cylinders are: Double-acting (Fig. 7.14a) Single-acting, spring return (Fig. 7.14b) Double-rod (Fig. 7.14c) Tandem (Fig. 7.14d) Telescoping (Fig. 7.14e) The double-rod cylinder…
When cylinders are connected in series, it is necessary to provide a feature for rephasing these cylinders when they are fully retracted. Otherwise, leakage will…
When cylinders reach the end of their stroke, the pressure rises quickly, creating a shock wave in the hydraulic circuit. Cushioning is done to reduce…
Before beginning our discussion of closed-loop hydrostatic transmissions, it is necessary to first learn how a servo-controlled pump operates. A variable displacement axial piston pump…
A configuration where all four wheels are powered is shown in Fig. 6.18. A single pump provides flow to four motors. This machine can be…
The vehicle shown in Fig. 6.17 has three wheel motors supplied by the same pump. In the design of such a vehicle, care must be…