China Professional Direction Control Unit Orbitrol 100 100cc Tractor Parts Opsc with Best Sales

Product Description

Direction Control Unit Orbitrol 100 100cc Tractor Hydraulic Spare Parts

Hydraulic Steering Unit 10 series is integral hydraulic steering unit, the valve body of rotary valve is integral structure, then the steering unit can integrate with cartridge valve, such as the pressure control valve of the integral system.
Hydraulic Steering Unit 10 series is widely used in the steering control system of different kinds of engineering vehicles, such as the steering system of many kinds of industrial and agricultural mobile machinery forklift, loader, road roller, tractor, combine harvester, and the ship CZPT etc. The steering unit can control the steering cylinder with bigger resistance force by inputting minor force; It’s easier , flexible and reliable; The integral check valve can prevent the system pressure oil from anti-vibration , and prevent from “hit-hand” during the steering operation; Integral pressure control valve can control the operation pressure and the shock pressure of the steering system.

Product detail:


101s ON/OR for hydraulic systems where oil is supplied by a fixed-displacement pump. The range is wide and flexible, characterised by: • Low steering torque, 0.5 Nm to 1.8 Nm in normal steering situations • Low noise level and wide control range • One or several built-in valve functions: pressure relief, shock, suction, and/or nonreturn in pump connection • Port threads as required, to DIN, ISO, SAE or JIS standards.

101s is available in versions “Open Center Reaction” or “Open Center Non Reaction” (OR or ON) and with displacements from 40 to 500 cm3 /rev. 101s is also available in a “Closed Center Non Reaction” (CN) type. CN steering units are for constant-pressure systems with variable pump flow. In neutral position, the CN unit shuts off oil flow between pump and tank. CN units are available with displacements from 50 to 400 cm3 /rev.





Parameters Series
Function code 1,2,4 1,4
Displacement (mL/r) 50 63 80 100 125 160 200 250 280 315 400
Rated Flow (L/min) 5 6 8 10 12.5 16 20 25 28 32 40
Max.input pressure(Mpa) 17.5
Relief Valve Pressure Settings ( MPa) 06,07,08,10,12,14,15,16,17.5
Shock Valve Pressure Settings ( MPa) 12,13,14,16,18,20,21,22,23.5
Max.cont.back pressure 2.5
Weight(kg) 5.75 5.81 5.89 5.96 6.1 6.3 6.5 6.73 6.91 7.1 7.5
Dimension L (mm) 130 132 134 137 140 145 150 156 161 166 176


Model :

 Elephant Fluid Power  Danfoss  M+S
 101S-1-80  OSPC80ON  HKUS80/4
 101S-1-100  OSPC100ON  HKUS100/4
 101S-1-125  OSPC125ON  HKUS125/4
 101S-1-160  OSPC160ON  HKUS160/4
 101S-1-200  OSPC200ON  HKUS200/4
 101S-1-250  OSPC250ON  HKUS250/4
 101S-1-315  OSPC315ON  HKUS315/4
 101S-1-400  OSPC400ON  HKUS400/4
 101S-1-500  OSPC500ON  HKUS500/4
 101S-1-630  OSPC630ON  HKUS630/4
 101S-1-800  OSPC800ON  HKUS800/4
 101S-1-1000  OSPC1000ON  HKUS1000/4

Product application:


01S Hydraulic steering unit is widely used in the steering control system, such as the steering system of many kinds of industrial and agricultural, mobile machinery forklift,loader,roadroller,tractor,comebine harvester, etc.



Common causes of failure and troubleshooting:


ProbleM Causes Troubleshooting
Oil leakage on the joint surface between the steering unit rear cover, stator and valve body rear cover stator bolt looseness (or uneven force), or O-rings damaged Evenly tighten the bolt, replace the seal
Oil leakage at steering shaft Excessive wear or damage of the seal ring at the shaft of steering unit Replace new seal
feels light when turn the steering wheel slowly, feels heavy when turn the steering wheel quickly Insufficient oil supply from the oil pump to the steering unit Check whether the oil pump is working properly (including liquid level, oil pump efficiency, pipeline smoothness, etc.)
There is foam in the oil, irregular sound, the steering wheel turns and the cylinder does not move There is air in the steering system

Eliminating the air in the system,

Check the suction pipe leaks or not, Or if the return nozzle is below the liquid level

Heavy steering continues to occur The oil in the tank is below the specified position Add oil to prescribed height
Oil viscosity is too high Use oil as required
Fast and slow steering wheels are both heavy, and there is no pressure on steering Check valve of the P and T fails

Check the ball.

If the steel ball is missing, then insert the steel ball;

If the ball gets stuck dirty, it should be cleaned;

In both cases, it is necessary to check the effectiveness of the sealing tape recovery.

No load or light load turns light, increase load turns to heavy Relief valve is of system’s pressure lower than required value Adjust the pressure of the relief valve to the specified value (but not more than 16 MPa)
Relief valve stucked by dirt, Or spring failure,Or seal is damaged Clean the relief valve (check the effectiveness of the sealing tape), or replace the spring or sealing ring
Steering wheel cannot be automatically centered Spring broken or deformation Replace with new spring
Steering wheel rotates or swings left and right automatically Rotor and the linkage shaft are in the wrong position

Stop immediately!

Align the rotor and linkage shaft

Can not reach an end position Low pressure on relief valve Properly increase the pressure of the safety valve (it is best to adjust with a pressure gauge)

After turning to the end, the steering wheel can still be easily turned

Low pressure on shock valves Properly increase shock valves pressure (it is best to adjust with a pressure gauge)
when machine is off, turn the wheel, cylinder not move radial clearance or axial clearance is too large between radial and stator Replace rotor and stator
Low viscosity of oil Change oil
Slow cylinder action shock valves failure (ball caught by dirty, or spring failure, or seal damage) Clean shock valves, replace spring or seal
Pressure of Steering system not CZPT to be adjusted Spring broken Replace the spring
Safety valve sealing quality is not high Replacement parts
Spool blocked Take out, check, and refurbish
Poor spool action Check whether the spool is blocked
Spring bent or too soft Replace the spring
Oil is not clean and the spool hole is blocked Replace clean oil and clear spool holes

The Mechanical Advantage of a Pulley

A pulley is an important tool for many tasks. The advantage that it offers over a hand-held mechanism is its mechanical advantage. In this article, we’ll discuss the types of pulleys and their applications. We’ll also look at the types of compound pulleys. And, of course, there’s a little bit about the mechanical advantage of a pulley. This article will help you decide whether this tool is right for your needs.

Mechanical advantage of a pulley

A pulley has a mechanical advantage over a lever because it is able to produce more force over longer distances. The mechanical advantage of a pulley sounds brilliant and could produce energy. But what exactly is this mechanical advantage? Let’s take a look. First, consider how a pulley works. A rope supports a 100kg mass, which requires 500 newtons of force to lift. If the rope supports a 100kg mass, 2 sections of rope can support that load. Using a pulley, you can lift the same weight with half the force.
A pulley’s ideal mechanical advantage is the ratio of the force applied to the total length of the rope. The larger the radius, the greater the mechanical advantage. A pulley made up of 4 rope segments has an ideal mechanical advantage of four. Therefore, a four-segment pulley would multiply the force applied by four. As the numbers on the rope segments are smaller than the total length of the rope, it would be better to use a compound pulley.
The mechanical advantage of a pulley can be calculated by using the T-method. The first step in calculating the mechanical advantage of a pulley is defining the force you need to lift. Then, divide that force by 2 to calculate the amount of force you need to lift the load. Once you know this amount, you can design a pulley to meet your needs. That way, you can achieve the perfect balance between the 2 types of pulleys.

Types of pulleys

The main function of the pulley is to change the direction of the force. The mechanical advantages of a single pulley are two. Ideally, 2 pulleys should have 2 or more mechanical advantages. The mechanical advantage of compound pulleys can be increased to 2 or more. The number of pulleys that make up the composite pulley will determine the mechanical advantage. Certain types of pulleys are combined in 1 housing.
A stepped pulley is a set of pulleys with stepped surfaces. Each face is anchored to the mid-axis in an ordered sequence. This design gives these pulleys their name. They are used to increase and decrease the speed of the driven pulley. Step pulleys are usually used in pairs. They can be straight or stepped, but usually come in pairs.
The 3 main types of pulleys are pulleys, rope pulleys, and chain pulleys. Pulley Pulley systems use mechanics to lift and lower heavy objects. The Greek historian Plutarch credits the invention of the pulley to Archimedes of ancient Sicily. The Mesopotamians used rope pulleys to lift water around 1500 BC, and Stonehenge is said to have been built using a rope pulley system.

Application of pulley system

The advantages of using a pulley system are numerous. The ability to lift heavy objects is a good example. The pulley system makes it easy for people to lift blocks and other large objects. It can be used in many different applications, from utility elevators to construction cranes. In addition, it is widely used on sailing boats. If you want to learn more about the benefits of a pulley system, keep reading!
You can use the pulley system to water flowers or water plants. Some of them even lowered the pot to make cleaning easier. Pendant lights are another great place to install a pulley system. Climbing and fishing are just some of the activities that utilize the pulley. They are great for fishing and gardening. And since they are so versatile, you can use the pulley system anywhere.
To get the most out of your pulley system, you must choose a product that has all of the above attributes. A high-quality pulley must have a large pulley diameter and be made of sturdy materials. The cables must also be properly supported in the pulleys to ensure a long service life for your investment. A good cable should have minimal cracks and be lubricated. These factors are the most important considerations when choosing a pulley system for your needs.

composite pulley

Composite pulley systems combine 2 or more movable pulleys. These systems maximize the force to move the weight and can also change direction so they can be used to lift weights. Composite pulley systems can be as simple or as complex as your needs. For example, a pulley pulley system uses multiple pulleys on each axis. This method is often used for hoisting building materials.
A compound pulley system has 2 or more rope segments, each of which is pulled up on a load. It can increase lift by making objects move faster. These systems are common on large sailboats and construction sites. Composite pulleys are also available for larger boats. Due to their versatility, they are versatile tools for construction sites and large sailboats. If you have their app, you should consider buying one.
The main advantage of composite pulleys is their versatility. You can use them to lift weights or use them to save energy. Composite pulleys are especially useful for lifting heavy objects. For example, you can tie a paper clip to the end of the rope and pull it up. The flag is then lifted into the air with the help of compound pulleys. Composite pulleys are a great invention and they are often used in construction.

security considerations

There are several safety considerations to consider when using pulleys. The first is Secure Workload (SWL). This value is a general guideline for the maximum weight a pulley can safely handle. It varies according to the height and angle of the pulley. Besides SWL, there are some other factors to consider. Consider each 1 before deciding on the pulley that best suits your needs.
Another safety consideration is the weight of the load. Since the highs of the pulley are higher than the lows, it doubles in weight. The weight of the high point should not exceed 4 kN. The safety factor is calculated by multiplying the strength of the pulley by the weight of the load. Secondary COD has a safety factor of 10:1 and bulletproof primary anchors should be used with pulleys.
If using a chain hoist, you must be trained in the appropriate type of lifting. It is important not to hang on the top hooks of the structure, nor to overload or rig the hooks with multiple slings. You should also avoid corroded or damaged chains, as they can cause the crane to jam or overload. A worn chain can even cause the load to drop.

Components of a pulley system

Proper design of the pulley system can increase the life of the cables and pulleys. Larger diameter cables should be selected as they are more durable than smaller diameter cables. The cables should also be supported in the pulley grooves. The pulley must be designed to be compatible with the cable and its lubrication should be optimal. Proper lubrication of cables and pulleys will ensure maximum durability and longevity.
The first type of pulley is called a fast pulley. These pulleys are used for quick start and stop of the machine. These pulleys are usually mounted in pairs on the countershaft of the machine. One pulley is tightly mounted on the machine shaft, while the other pulley is fitted with a free-spinning mechanism. When the machine is running, the belt is mounted on the tensioner pulley, and when it is stopped, the belt slides on the independent pulley.
Composite pulley sets reduce the overall effort required by reducing the size of the pulley. These are usually attributed to Archimedes. Flat pulleys are often used in flat belt driven transmission systems. These are used in high-speed, low-power applications. Flat pulley idlers are also used on the back of traditional V-belts.

China Professional Direction Control Unit Orbitrol 100 100cc Tractor Parts Opsc     with Best SalesChina Professional Direction Control Unit Orbitrol 100 100cc Tractor Parts Opsc     with Best Sales