Cylinders allow hydraulic systems to utilize linear motion and force without mechanical gears or levers by transferring the pressure from fluid via a piston to the point of operation. Hydraulic cylinders are at work in both industrial applications (hydraulic presses, cranes, forges, packing machines), and mobile apps (agricultural machines, construction equipment, marine equipment). And, when compared with pneumatic, mechanical or electric systems, hydraulics may be simpler, stronger, and offer greater power. For instance, Furniture Hydraulic Cylinder has about 10 times the power density of an motor unit of comparable size. Hydraulic cylinders are also available in a remarkable array of scales to meet a variety of application needs.
Choosing the right cylinder for an application is critical to attaining maximum performance and reliability. This means considering several parameters. Fortunately, an assortment of cylinder types, mounting techniques and “rules of thumb” are offered to help.
The three most frequent cylinder configurations are tie-rod, welded and ram styles. Tie-rod cylinders use high-strength threaded steel tie-rods, typically on the outside the cylinder housing, to offer additional stability. Welded cylinders feature a heavy-duty welded cylinder housing with a barrel welded directly to the end caps, and require no tie rods. Ram cylinders are only the things they appear to be-the cylinder pushes straight ahead using very high pressure. Ram cylinders are used in heavy-duty applications and more often than not push loads instead of pull.
For all sorts of cylinders, the crucial measurements include stroke, bore diameter and rod diameter. Stroke lengths differ from less than an inch to many feet or maybe more. Bore diameters may range from an inch approximately greater than 24 in., and piston rod diameters range between .5 in. to greater than 20 in. In practice, however, the choice of stroke, bore and rod dimensions may be limited by environmental or design conditions. For instance, space might be too limited for your ideal stroke length. For tie-rod cylinders, increasing the dimensions of the bore means increasing the number of tie rods needed to retain stability. Enhancing the diameter of the bore or piston rod is an ideal approach to compensate for higher loads, but space considerations might not allow this, whereby multiple cylinders may be required.
Mounting methods also play a crucial role in cylinder performance. Generally, fixed mounts on the centerline from the cylinder are ideal for straight line force transfer and avoiding wear. Common kinds of mounting include:
Flange mounts-Quite strong and rigid, but have little tolerance for misalignment. Experts recommend cap end mounts for thrust loads and rod end mounts where major loading puts the piston rod in tension. Side-mounted cylinders-Very easy to install and service, however the mounts create a turning moment since the cylinder applies force to some load, increasing deterioration. To prevent this, specify a stroke a minimum of provided that the bore size for side mount cylinders (heavy loading has a tendency to make short stroke, large bore cylinders unstable). Side mounts must be well aligned and the load supported and guided.
Centerline lug mounts -Absorb forces on the centerline, but require dowel pins to secure the lugs to prevent movement at higher pressures or under shock conditions. Pivot mounts -Absorb force on the cylinder centerline and allow the cylinder change alignment in a single plane. Common types include clevises, trunnion mounts and spherical bearings. Because these mounts allow a cylinder to pivot, they must be used with rod-end attachments which also pivot. Clevis mounts can be utilized in any orientation and are generally appropriate for short strokes and small- to medium-bore cylinders.
Operating conditions-Cylinders must match a certain application with regards to the quantity of pressure (psi), force exerted, space requirements imposed by machine design, and so forth. But knowing the operating requirements is simply half the challenge. Cylinders also must withstand high temperatures, humidity and even salt water for Hydraulic Power Station Price. Wherever temperatures typically rise to greater than 300° F, standard Buna-N nitrile rubber seals may fail-choose cylinders with Viton synthetic rubber seals instead. While in doubt, assume operating conditions will be more rugged than they appear at first glance.
Fluid type-Most hydraulics use a type of mineral oil, but applications involving synthetic fluids, like phosphate esters, require Viton seals. Yet again, Buna-N seals might not be adequate to deal with synthetic fluid hydraulics. Polyurethane is additionally incompatible with higher water-based fluids including water glycol.
Seals -This is among the most vulnerable element of R8 Hydraulic Hose. Proper seals is able to reduce friction and wear, lengthening service life, as the wrong type of seal can result in downtime and maintenance headaches.
Cylinder materials -The sort of metal utilized for cylinder head, base and bearing can easily make a significant difference. Most cylinders use SAE 660 bronze for rod bearings and medium-grade carbon steel for heads and bases, that is adequate for most applications. But stronger materials, such as 65-45-12 ductile iron for rod bearings, provides a sizable performance rldvub for tough industrial tasks. The type of piston rod material may be important in wet or high-humidity environments (e.g., marine hydraulics) where17-4PH stainless-steel might be stronger compared to the standard case-hardened carbon steel with chrome plating utilized for most piston rods.
Yongxiang Hydraulic Equipment Co., Ltd locates in Yangzhou, CN, and it covers an area of 143,500 square feet. Winning customer trust with innovation, Yongxiang has been aiming to provide customers with safe and reliable hydraulic products, services, on-time delivery, and customer satisfaction while ensuring employee safety, fostering employee relations and driving efficiency improvements.
Jiangsu Yongxiang Hydraulic Equipment Co. Ltd
Factory: Wujian Industrial Park, Jiangdu District, Yangzhou, CN
Office: 3107# No.2 Building, Global Financial Center, Wenchang East Road, Yangzhou, CN
E-mail: [email protected]