China OEM 2 Levers Handle Control Spool Valve Hydraulic Directional Monoblock Valve drive shaft bushing

Product Description

Company information
 

GUORUI HYDRAULIC

GRH specialized in providing hydraulic components and solutions for hydraulic systems

 

With continuous improvement and enthusiasm over the past 30 years, CZPT has developed into an emerging

Power in the fluid power industry since it was established in 1986.

Research and development are the driving force that facilitates GRH’s ability to create new products.Standards of TS16949 and ISO14000 are our guiding principles.Employees’ capabilities and creativity are major factors that differentiate CZPT from our competitors.

GRH designs and produces Hydraulic Gear Pumps & Motors, Monoblock Valves, Sectional Stack Valves, Proportional Valves and Flow Dividers.These products are used on industrial machinery, construction equipment, agricultural equipment and material handling applications.GRH is also willing to work with our customers to develop specialized products for their special needs.Our customers can count on GRH’s extensive system design and application experience when they are designing their hydraulic systems.

GRH has designed and developed a series of load sensing proportional stackable valves which provides an improvement in valve operating performance and system efficiency.

GRH (ZheJiang )  – International Sales Office

GRH (ZheJiang )  –  Manufacturing Facility and Domestic Sales Office

Production Description

Major Technical Data
Rated flow rate: 45 L/min
Maximum flow rate: 55L/min
Maximum pressure at P port: 310 bar
Maximum pressure at A/B port: 310bar 
Maximum pressure at T port: 25 bar
Internal leakage(at 70 bar):A/B to T 30-35 cc/min
Temperature range of the hydraulic oil  
with NBR(BUNA–N)seals: -20ºC-80ºC
with FPM(VITON)seals -20ºC-100ºC
Spool stroke(1/2 position): +7/-7mm
With floating function (1/2 and F position) +7/-7-9mm
Recommend temperature range: -40ºC-60ºC

Packaging & Shipping

Our Services
 

GRH now has more than 3 hundred employees with 51 technical workers of all kinds. Its enterprise fixed assets is RMB 40 2 million with a space covering 22000 square meters. There are about 208 machines , outputting hydraulic components about 1.6 million pieces.

GRH has 4 centers and 4 branch plants
Design center, sales center, administration center and testing center
Gear pump and motor plant, hydraulic valve plant, heat treatment plant and system plant.

GRH will work together with the customers to create a better future

Partnership

FAQ

 
A: 1.Hydraulic system
   2.Agriculture machine
   3.Constraction machine
   4. Automobile:
   5.Local distributors
 
 
Q: What Is The Payment Terms.
A:Full order: 30% as deposit, the balance before shipment;
Small order /sample order: full payment in advance;
 
 
Q: Can I Mark My Own Brand On The Pump?
A: Yes. Full order shold mark your brand and code;
 
 
Q: What is our main export market?
A: America(45.5%):The United States, Canada, Argentina, Brazil 
Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.
Asia(18.5%):Korea,singapore,India,Turkey,Iran, Vietnam, Saudi Arabia, Syria, Israel, Lebanon
Others(5.8%):

 

Details:

luminum body / full aluminum /full cast iron
 
Port: BSP,NPT,UNF etc
 
Shaft: Tang claw shaft,Tappered key shaft, spline shaft 
 
Front cover: 4-bolt rectangular flange,4-bolt square flange, 2-bolt SAE flange
 
Application: construction machine, agriculture machine,hydraulic system
 
Valve option: Pressure Relieve Valve,Flow Contro valve
 
Shaft seal: V(-10ºC~120ºC),H(-40ºC~80ºC),T(3~6bar), N(3~10bar)

 

Welcome to China,  Welcome to ZheJiang , welcome for your visit!  

 

 

                                                                    GRH TEAM

Color: Black
Name: 70L/Min Two Spools Hydraulic Monoblock Valve
Material: Cast Iron
Warranty: One Year
Transport Package: All Goods Are in Our Standard Packing
Specification: CE
Samples:
US$ 69/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

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Customized Request

splineshaft

What Are the Advantages of a Splined Shaft?

If you are looking for the right splined shaft for your machine, you should know a few important things. First, what type of material should be used? Stainless steel is usually the most appropriate choice, because of its ability to offer low noise and fatigue failure. Secondly, it can be machined using a slotting or shaping machine. Lastly, it will ensure smooth motion. So, what are the advantages of a splined shaft?
Stainless steel is the best material for splined shafts

When choosing a splined shaft, you should consider its hardness, quality, and finish. Stainless steel has superior corrosion and wear resistance. Carbon steel is another good material for splined shafts. Carbon steel has a shallow carbon content (about 1.7%), which makes it more malleable and helps ensure smooth motion. But if you’re not willing to spend the money on stainless steel, consider other options.
There are two main types of splines: parallel splines and crowned splines. Involute splines have parallel grooves and allow linear and rotary motion. Helical splines have involute teeth and are oriented at an angle. This type allows for many teeth on the shaft and minimizes the stress concentration in the stationary joint.
Large evenly spaced splines are widely used in hydraulic systems, drivetrains, and machine tools. They are typically made from carbon steel (CR10) and stainless steel (AISI 304). This material is durable and meets the requirements of ISO 14-B, formerly DIN 5463-B. Splined shafts are typically made of stainless steel or C45 steel, though there are many other materials available.
Stainless steel is the best material for a splined shaft. This metal is also incredibly affordable. In most cases, stainless steel is the best choice for these shafts because it offers the best corrosion resistance. There are many different types of splined shafts, and each one is suited for a particular application. There are also many different types of stainless steel, so choose stainless steel if you want the best quality.
For those looking for high-quality splined shafts, CZPT Spline Shafts offer many benefits. They can reduce costs, improve positional accuracy, and reduce friction. With the CZPT TFE coating, splined shafts can reduce energy and heat buildup, and extend the life of your products. And, they’re easy to install – all you need to do is install them.

They provide low noise, low wear and fatigue failure

The splines in a splined shaft are composed of two main parts: the spline root fillet and the spline relief. The spline root fillet is the most critical part, because fatigue failure starts there and propagates to the relief. The spline relief is more susceptible to fatigue failure because of its involute tooth shape, which offers a lower stress to the shaft and has a smaller area of contact.
The fatigue life of splined shafts is determined by measuring the S-N curve. This is also known as the Wohler curve, and it is the relationship between stress amplitude and number of cycles. It depends on the material, geometry and way of loading. It can be obtained from a physical test on a uniform material specimen under a constant amplitude load. Approximations for low-alloy steel parts can be made using a lower-alloy steel material.
Splined shafts provide low noise, minimal wear and fatigue failure. However, some mechanical transmission elements need to be removed from the shaft during assembly and manufacturing processes. The shafts must still be capable of relative axial movement for functional purposes. As such, good spline joints are essential to high-quality torque transmission, minimal backlash, and low noise. The major failure modes of spline shafts include fretting corrosion, tooth breakage, and fatigue failure.
The outer disc carrier spline is susceptible to tensile stress and fatigue failure. High customer demands for low noise and low wear and fatigue failure makes splined shafts an excellent choice. A fractured spline gear coupling was received for analysis. It was installed near the top of a filter shaft and inserted into the gearbox motor. The service history was unknown. The fractured spline gear coupling had longitudinally cracked and arrested at the termination of the spline gear teeth. The spline gear teeth also exhibited wear and deformation.
A new spline coupling method detects fault propagation in hollow cylindrical splined shafts. A spline coupling is fabricated using an AE method with the spline section unrolled into a metal plate of the same thickness as the cylinder wall. In addition, the spline coupling is misaligned, which puts significant concentration on the spline teeth. This further accelerates the rate of fretting fatigue and wear.
A spline joint should be lubricated after 25 hours of operation. Frequent lubrication can increase maintenance costs and cause downtime. Moreover, the lubricant may retain abrasive particles at the interfaces. In some cases, lubricants can even cause misalignment, leading to premature failure. So, the lubrication of a spline coupling is vital in ensuring proper functioning of the shaft.
The design of a spline coupling can be optimized to enhance its wear resistance and reliability. Surface treatments, loads, and rotation affect the friction properties of a spline coupling. In addition, a finite element method was developed to predict wear of a floating spline coupling. This method is feasible and provides a reliable basis for predicting the wear and fatigue life of a spline coupling.
splineshaft

They can be machined using a slotting or shaping machine

Machines can be used to shape splined shafts in a variety of industries. They are useful in many applications, including gearboxes, braking systems, and axles. A slotted shaft can be manipulated in several ways, including hobbling, broaching, and slotting. In addition to shaping, splines are also useful in reducing bar diameter.
When using a slotting or shaping machine, the workpiece is held against a pedestal that has a uniform thickness. The machine is equipped with a stand column and limiting column (Figure 1), each positioned perpendicular to the upper surface of the pedestal. The limiting column axis is located on the same line as the stand column. During the slotting or shaping process, the tool is fed in and out until the desired space is achieved.
One process involves cutting splines into a shaft. Straddle milling, spline shaping, and spline cutting are two common processes used to create splined shafts. Straddle milling involves a fixed indexing fixture that holds the shaft steady, while rotating milling cutters cut the groove in the length of the shaft. Several passes are required to ensure uniformity throughout the spline.
Splines are a type of gear. The ridges or teeth on the drive shaft mesh with grooves in the mating piece. A splined shaft allows the transmission of torque to a mate piece while maximizing the power transfer. Splines are used in heavy vehicles, construction, agriculture, and massive earthmoving machinery. Splines are used in virtually every type of rotary motion, from axles to transmission systems. They also offer better fatigue life and reliability.
Slotting or shaping machines can also be used to shape splined shafts. Slotting machines are often used to machine splined shafts, because it is easier to make them with these machines. Using a slotting or shaping machine can result in splined shafts of different sizes. It is important to follow a set of spline standards to ensure your parts are manufactured to the highest standards.
A milling machine is another option for producing splined shafts. A spline shaft can be set up between two centers in an indexing fixture. Two side milling cutters are mounted on an arbor and a spacer and shims are inserted between them. The arbor and cutters are then mounted to a milling machine spindle. To make sure the cutters center themselves over the splined shaft, an adjustment must be made to the spindle of the machine.
The machining process is very different for internal and external splines. External splines can be broached, shaped, milled, or hobbed, while internal splines cannot. These machines use hard alloy, but they are not as good for internal splines. A machine with a slotting mechanism is necessary for these operations.

China OEM 2 Levers Handle Control Spool Valve Hydraulic Directional Monoblock Valve   drive shaft bushing	China OEM 2 Levers Handle Control Spool Valve Hydraulic Directional Monoblock Valve   drive shaft bushing
editor by CX 2023-11-15

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