Tag Archives: hollow hydraulic ram

China Double acting jacks hollow 50ton 100ton long ram horizontal hydraulic jack hydraulic cylinder bore

Design Amount: QB45/10
Type: Hydraulic Jack
Min Peak: 45mm
Max Peak: 212mm
Capability (Load): >50T
Packaging Details: Picket scenario, or as per requirement.

Merchandise Identify: Hydraulic jack
Hydraulic jack is composed of a casing, a huge piston, a small piston, a wrench, a gas tank and the like which is scaled-down in measurement and can make more functioning capacity. Hydraulic jack is specially employed in areas with slim place, and it is gentle and versatile, with large top pressure.


Model

Load(T)
Stroke
(mm)
Working pressure
(Mpa)
Physique height
(mm)
OD
(mm)
Rod diameter
(mm)
Stretch height
(mm)
QB45/10

ten

10

one-sixty three

45

64


30

55
QB45/20
twenty
fifty five
75
QB45/thirty
thirty
65
a hundred
QB45/40
40
75
a hundred and twenty
QB63/20

twenty

twenty

one-sixty three

sixty five

eighty five


45

85
QB63/thirty
thirty
75
105
QB63/forty
40
eighty five
a hundred twenty five

*30tons, Agricultural machinery spare elements flail mower hammer blades 50tons, 100tons, 200tons. get in touch with us for information.

Packaging & ShippingRegular packing: Wooden case, as for every need.
Delivery time: Inside of 7 days right after obtaining the payment.

Connected productClick photo for far more information.

hefty equipment pushing jack hydraulic torque wrench plate heat exchanger wrench
Our Providers

Our group
PAILIEN machinery production co., LTD.(http://www.sdpailien.cn) is a organization specializing in making substantial-top quality splitting rock device, wall chopping machine, wall cutter device, Mini Micro High Energy Long Lifespan r Higher Torque Minimal Sounds DC Brushed Planetary Equipment Motor For Robot Toy hydraulic rope saw equipment, electric powered wire sawing equipment, device-mounted hydraulic splitting machine and so on.
Our business has 200 staff, 20 engineers and 5 senior engineers, 15000 sq. CZPT workshop located in the biggest substantial-tech industrial park in DeZhou, ZheJiang province, China.
Sincerely welcome you to come to China and pay a visit to our factory for prolonged-expression cooperation.

Consumer Reading
Q1. What is the payment phrase? A: 1. T/T. 2. L/C at sight. 3. West Union.
Q2. What’s about the MOQ?
A: No limitation about the moq. 1 set can take pleasure in wholesale price tag.
Q3. What is the shipping and delivery time? A: Widespread kind for tiny sum usually 7-fifteen days.
Tailored kind for massive volume will require about twenty five days.
This fall. Can I Mark my own brand name on the equipment? A: Yes, heavy responsibility automobile components & equipment,boat add-ons,trailer spindle but you have to provide your authority of brand to us.
Q5. Can I get a sample? A: Sure, sample can custom made as your request.

hydraulic cylinders

The Basics of Hydraulic Cylinders

Basically a hydraulic cylinder is a mechanical actuator which can be used for giving unidirectional force. It has various applications in civil engineering, construction equipment, manufacturing machinery and elevators.

Single acting vs double acting

Generally speaking, single acting and double acting hydraulic cylinders function differently. Double acting cylinders have two ports, and apply pressure on both sides of the piston. Single acting cylinders have a single port.
Hydraulic cylinders are used in a wide variety of applications, including manufacturing machinery, construction equipment, and civil engineering. Their main use is on mobile equipment such as graders and excavators. They are also used in reciprocating engines and hydraulic rams.
Single acting hydraulic cylinders are generally smaller and more compact than double acting cylinders. They are also simpler in design and require less maintenance. They are suitable for heavy-duty applications such as lifting and ejecting parts from conveyor belts. They are also cheaper to manufacture. However, they have a limited range of motion, and have limited power and control.
Double acting cylinders, on the other hand, offer more flexibility, faster operation, and greater power. They are also better suited for applications that require precise retraction control. They are more durable than single acting cylinders, and are commonly used in heavy industrial applications. They also have more design variation.
In order to determine whether you need a single acting or double acting cylinder, you should first consider your power requirements. Single acting cylinders are better suited for applications that require only a small amount of force, but require several stroke cycles. Double acting cylinders are suited for applications that require more force, but require a higher number of stroke cycles.
Single acting cylinders are more economical to buy and install, but they are not as compact as double acting cylinders. They are also not as reliable as double acting cylinders. In addition, they may require a second port to convert a single acting cylinder into a double acting cylinder.

Piston rod

During the design phase of a hydraulic cylinder, many factors must be considered. These include the function, materials, and the environment in which the cylinder will be used.
The most important part of the hydraulic cylinder is the rod. It performs the reciprocating motion and is attached to the piston by threads. It also acts as the structural component of the cylinder.
The rod itself is made from chrome plated steel and is usually 10 to 30 millimeters thick. It is plated with a thick layer of chromium to increase wear resistance and temperature resistance. The rod also has an o-ring on its end to prevent the high-pressure oil from escaping.
The rod is connected to the piston by a backup ring and two o-rings. The o-rings keep the rod centered in the barrel, while the backup rings protect the o-rings from escaping when high pressures are applied from the opposite side.
The most important feature of the piston rod is its buckling resistance. The rod may be solid, hollow, or heat-treated. The buckling resistance of a rod depends on its length and its diameter. The longer the rod, the less force it needs to withstand a buckling load.
Another important feature of the rod is its slenderness ratio. This ratio is calculated by measuring the effective length of the rod. This ratio is usually calculated by using Euler’s theory.
The cylinder head is another important part of the hydraulic cylinder. The head has ports that allow hydraulic fluid to enter and exit the barrel. It also has a check valve to prevent oil from leaking out.
The cylinder head also serves as a mechanical stop for the piston. It has two seals: a gland seal and an internal seal. The gland seal prevents the high-pressure oil from escaping, while the internal seal ensures that the o-ring seal is in place.hydraulic cylinders

Welded body vs flanged connection

Generally, there are two kinds of connections for hydraulic cylinders: flanged and welded body. The flange connection is usually used in applications where there is exceptionally high pressure. A welded body connection can be used in places where space is limited. It also improves the overall appearance of the equipment.
Hydraulic cylinders are used in a variety of applications, including earth moving equipment, metal sheet shearing machines, and hydraulic bending machines. They are also used in particle board making hot press machines. The majority of hydraulic cylinders are made from alloy steel combinations.
These materials are prone to rusting, especially when used in humid environments. They may also require coating to prevent corrosion. Hydraulic cylinders can be made of stainless steel or alloy steel. Stainless steel is usually used in marine environments because of its corrosion resistance.
Hydraulic cylinders come in a variety of designs, including single acting cylinders, double acting cylinders, and telescopic cylinders. Single acting cylinders are designed for pushing motion, while double acting cylinders are designed for a linear motion. They are available with threaded, socket weld, or welded body connections.
The rod of a hydraulic cylinder operates outside of the barrel, pushing hydraulic fluid inside the barrel. The piston rod needs to be protected from wear, and the outer diameter of the piston rod is usually coated with a corrosion-resistant surface.
Hydraulic cylinders are typically made of carbon steel, stainless steel, or alloy steel. There are a variety of coatings available, including chrome (nickel) plating, laser cladding, and hard chrome plating.
The most important seal in hydraulic cylinders is the rod seal. This seal needs to be slow to wear, and it needs to be able to resist multiple rod movements. It must also be able to remove contaminants from the hydraulic fluid.

Pneumatic actuators vs hydraulic actuators

Compared to hydraulic actuators, pneumatic actuators are cheaper and less powerful. However, they offer higher uptime and increased productivity. This makes them a good choice for light to medium duty applications.
Pneumatic actuators use air pressure instead of hydraulic fluid, and they provide a reliable motion that is ideal for window manufacturing. They have a simple design that reduces maintenance. They can be used in various applications, including food production, automotive manufacturing, and industrial machinery.
Hydraulic actuators are better suited for heavy duty applications. They can handle higher pressures and generate more force than pneumatic actuators. But they can leak fluid, which can invite contamination. They can also be noisy, without the use of noise-reducing equipment.
Hydraulics also require pumps and reservoirs for fluid. There are also valves, pistons, and companion parts to maintain the system. It is important to check for leaks and maintain the system.
Hydraulic actuators are used in heavy construction equipment, nail guns, precision drills, and moving machinery. Hydraulic cylinders provide 25 times the force of pneumatic cylinders.
Hydraulic systems can be a good choice for heavy duty applications, but they can also cause more problems. For example, the pressures can be very high, and they can leak fluid. Hydraulics require regular maintenance, which increases the overall cost of ownership. They can also lead to contamination of the internal working parts of the system.
The biggest advantage of hydraulic actuators is their ability to create and hold torque. It’s important to monitor the temperature of the fluid to avoid leaks. If there is a leak, the fluid can be contaminated and damage internal working parts.
Hydraulic actuators require more care and maintenance, and they may be more expensive than pneumatic actuators. The cost of maintenance may also affect the lifespan of the device.hydraulic cylinders

Cushioned vs non-cushioned cylinders

Depending on the application, cushioned hydraulic cylinders can be used as a cost-effective and useful tool for reducing shock loads. The cushioning can take a variety of forms, from external shock absorbers to internal cushions.
Cushioning is the process of decelerating the cylinder rod near the end of its stroke. This reduces vibration and reduces stresses on components. However, too much cushioning can reduce the efficiency of the machine, especially for pneumatic cylinders.
The cushioning effect is achieved by restricting the flow of hydraulic fluid exiting the cylinder port. This is achieved through a small orifice that allows the flow to be controlled. The smaller the orifice, the more controllable the cushioning effect.
A typical example is a double-acting cylinder with double-sided cushioning. The cylinder is constructed with a check valve oriented from port A to port B. This valve is set to operate from a minimum of 10 millimeters before the end of the stroke.
The cushioning effect can be regulated externally with an adjustable screw. In order to determine the amount of cushioning required, it is important to consider factors such as cylinder size, stroke, and application.
In addition to being able to control the flow of hydraulic fluid, the cushioning effect can also be used to protect the entire system. It can be used to restrict the exiting flow of hydraulic fluid so that the incoming flow can reach maximum pressure.
Cushioning can be used in conjunction with other methods to reduce shock loads. For example, a fast start-up method can reduce the impact force of the cylinder. A cushion design can also increase the rate at which fluid returns to the cylinder when it leaves the cushion.
China Double acting jacks hollow 50ton 100ton long ram horizontal hydraulic jack     hydraulic cylinder boreChina Double acting jacks hollow 50ton 100ton long ram horizontal hydraulic jack     hydraulic cylinder bore
editor by czh 2023-06-27

China Hot selling Single Acting Hollow Plunger Hydraulic Jack Cylinder Hydraulic RAM Cylinder with Great quality

Product Description

 

RCH series single acting hollow plunger hydraulic jack cylinder

 

Feature of hydraulic cylinder

1.Hollow plunger design allows for both pill and push forces.

2.Single-acting spring return. 

3.Baked enamel finish for increased corrosion resistance. 

4.Collar threads for easy fixturing. 

5.stable quality ,lowest price and considerate service; 

6. Spindle possesses automatic retraction function; 

7. Painted surface corrosion and beautiful; 

8. The Hollow plunger cylinders allows for both pull and push forces. 

9. Every type contains a 3/8 fast connector.

 

Parameter of hydraulic cylinder

Item No. RCH-2050 RCH-25710 RCH-3050 RCH-35710 RCH-6050 RCH-65710 RCH-10075
Output(T) 20 20 30 30 60 60 100
Stoke(mm) 50 100 50 100 50 100 75
Effective area(cm2) 22.9 22.9 36.29 36.29 67.89 67.89 94.98
Oil Capacity(L) 0.16 0.32 0.25 0.5 0.45 0.9 1.2
Height of products(mm) 153 217 153 217 164 231 254
Extended height(mm) 214 328 214 328 225 342 340
Outside(mm) 98 98 115 115 155 155 180
Bore die(mm) 73 73 88 88 125 125 140
Principal Dia(mm) 54 54 68 68 93 93 110
Thead for input oil-port(ZG) 27 27 34 34 54 54 79

Saddle protrusion form  

plgr(mm)

3/8″ 3/8″ 3/8″ 3/8″ 3/8″ 3/8″ 3/8″
Weight(kg) 7.2 10 10 13.4 17.2 23.2 41

 

Worm Shafts and Gearboxes

If you have a gearbox, you may be wondering what the best Worm Shaft is for your application. There are several things to consider, including the Concave shape, Number of threads, and Lubrication. This article will explain each factor and help you choose the right Worm Shaft for your gearbox. There are many options available on the market, so don’t hesitate to shop around. If you are new to the world of gearboxes, read on to learn more about this popular type of gearbox.
worm shaft

Concave shape

The geometry of a worm gear varies considerably depending on its manufacturer and its intended use. Early worms had a basic profile that resembled a screw thread and could be chased on a lathe. Later, tools with a straight sided g-angle were developed to produce threads that were parallel to the worm’s axis. Grinding was also developed to improve the finish of worm threads and minimize distortions that occur with hardening.
To select a worm with the proper geometry, the diameter of the worm gear must be in the same unit as the worm’s shaft. Once the basic profile of the worm gear is determined, the worm gear teeth can be specified. The calculation also involves an angle for the worm shaft to prevent it from overheating. The angle of the worm shaft should be as close to the vertical axis as possible.
Double-enveloping worm gears, on the other hand, do not have a throat around the worm. They are helical gears with a straight worm shaft. Since the teeth of the worm are in contact with each other, they produce significant friction. Unlike double-enveloping worm gears, non-throated worm gears are more compact and can handle smaller loads. They are also easy to manufacture.
The worm gears of different manufacturers offer many advantages. For instance, worm gears are 1 of the most efficient ways to increase torque, while lower-quality materials like bronze are difficult to lubricate. Worm gears also have a low failure rate because they allow for considerable leeway in the design process. Despite the differences between the 2 standards, the overall performance of a worm gear system is the same.
The cone-shaped worm is another type. This is a technological scheme that combines a straight worm shaft with a concave arc. The concave arc is also a useful utility model. Worms with this shape have more than 3 contacts at the same time, which means they can reduce a large diameter without excessive wear. It is also a relatively low-cost model.
worm shaft

Thread pattern

A good worm gear requires a perfect thread pattern. There are a few key parameters that determine how good a thread pattern is. Firstly, the threading pattern must be ACME-threaded. If this is not possible, the thread must be made with straight sides. Then, the linear pitch of the “worm” must be the same as the circular pitch of the corresponding worm wheel. In simple terms, this means the pitch of the “worm” is the same as the circular pitch of the worm wheel. A quick-change gearbox is usually used with this type of worm gear. Alternatively, lead-screw change gears are used instead of a quick-change gear box. The pitch of a worm gear equals the helix angle of a screw.
A worm gear’s axial pitch must match the circular pitch of a gear with a higher axial pitch. The circular pitch is the distance between the points of teeth on the worm, while the axial pitch is the distance between the worm’s teeth. Another factor is the worm’s lead angle. The angle between the pitch cylinder and worm shaft is called its lead angle, and the higher the lead angle, the greater the efficiency of a gear.
Worm gear tooth geometry varies depending on the manufacturer and intended use. In early worms, threading resembled the thread on a screw, and was easily chased using a lathe. Later, grinding improved worm thread finishes and minimized distortions from hardening. As a result, today, most worm gears have a thread pattern corresponding to their size. When selecting a worm gear, make sure to check for the number of threads before purchasing it.
A worm gear’s threading is crucial in its operation. Worm teeth are typically cylindrical, and are arranged in a pattern similar to screw or nut threads. Worm teeth are often formed on an axis of perpendicular compared to their parallel counterparts. Because of this, they have greater torque than their spur gear counterparts. Moreover, the gearing has a low output speed and high torque.

Number of threads

Different types of worm gears use different numbers of threads on their planetary gears. A single threaded worm gear should not be used with a double-threaded worm. A single-threaded worm gear should be used with a single-threaded worm. Single-threaded worms are more effective for speed reduction than double-threaded ones.
The number of threads on a worm’s shaft is a ratio that compares the pitch diameter and number of teeth. In general, worms have 1,2,4 threads, but some have three, five, or six. Counting thread starts can help you determine the number of threads on a worm. A single-threaded worm has fewer threads than a multiple-threaded worm, but a multi-threaded worm will have more threads than a mono-threaded planetary gear.
To measure the number of threads on a worm shaft, a small fixture with 2 ground faces is used. The worm must be removed from its housing so that the finished thread area can be inspected. After identifying the number of threads, simple measurements of the worm’s outside diameter and thread depth are taken. Once the worm has been accounted for, a cast of the tooth space is made using epoxy material. The casting is moulded between the 2 tooth flanks. The V-block fixture rests against the outside diameter of the worm.
The circular pitch of a worm and its axial pitch must match the circular pitch of a larger gear. The axial pitch of a worm is the distance between the points of the teeth on a worm’s pitch diameter. The lead of a thread is the distance a thread travels in 1 revolution. The lead angle is the tangent to the helix of a thread on a cylinder.
The worm gear’s speed transmission ratio is based on the number of threads. A worm gear with a high ratio can be easily reduced in 1 step by using a set of worm gears. However, a multi-thread worm will have more than 2 threads. The worm gear is also more efficient than single-threaded gears. And a worm gear with a high ratio will allow the motor to be used in a variety of applications.
worm shaft

Lubrication

The lubrication of a worm gear is particularly challenging, due to its friction and high sliding contact force. Fortunately, there are several options for lubricants, such as compounded oils. Compounded oils are mineral-based lubricants formulated with 10 percent or more fatty acid, rust and oxidation inhibitors, and other additives. This combination results in improved lubricity, reduced friction, and lower sliding wear.
When choosing a lubricant for a worm shaft, make sure the product’s viscosity is right for the type of gearing used. A low viscosity will make the gearbox difficult to actuate and rotate. Worm gears also undergo a greater sliding motion than rolling motion, so grease must be able to migrate evenly throughout the gearbox. Repeated sliding motions will push the grease away from the contact zone.
Another consideration is the backlash of the gears. Worm gears have high gear ratios, sometimes 300:1. This is important for power applications, but is at the same time inefficient. Worm gears can generate heat during the sliding motion, so a high-quality lubricant is essential. This type of lubricant will reduce heat and ensure optimal performance. The following tips will help you choose the right lubricant for your worm gear.
In low-speed applications, a grease lubricant may be sufficient. In higher-speed applications, it’s best to apply a synthetic lubricant to prevent premature failure and tooth wear. In both cases, lubricant choice depends on the tangential and rotational speed. It is important to follow manufacturer’s guidelines regarding the choice of lubricant. But remember that lubricant choice is not an easy task.

China Hot selling Single Acting Hollow Plunger Hydraulic Jack Cylinder Hydraulic RAM Cylinder     with Great qualityChina Hot selling Single Acting Hollow Plunger Hydraulic Jack Cylinder Hydraulic RAM Cylinder     with Great quality