Product Description

Product Description

Powerful performance
1. CZPT brand diesel engine: equipped with CZPT brand 4-cylinder 4-stroke vertical water-cooled diesel engine, which achieves high torque output while adopting a miniaturized design. Sufficient power and strong tractive force make the power reserve of the machine sufficient for heavy-duty operations.
2. Excellent air intake system: 4-valve technology (4-cylinder 16-valve), combined with central injection system and turbocharging device, achieves high-efficiency and energy-saving effects while ensuring high power output.

Fast and efficient control
1. Front and rear shuttle reversing: It is convenient for the driver to switch forward and backward, especially in Oda Express, narrow road sections or when using a loader.
2. Independent, wet PTO clutch: Hydraulic control mode, the user does not need to step on the main clutch, and the PTO clutch can be connected or disconnected with a gentle pull of the right hand.
3. Centralized setting of the main control handles: The main and auxiliary transmissions, hydraulic output, force position adjustment, PTO and other operating handles are centrally set on the right side of the operating handle, which enables the driver to control the tractor more conveniently.
Comfortable ride
1. Spacious and comfortable driving space: the cab with good sealing performance can isolate the noise to the greatest extent in the noisy working environment, so that the driver can work in a relatively quiet and comfortable environment, thereby reducing the driver's fatigue. . The flat floor design and the centralized setting of the main handles make the operation more convenient and comfortable for the driver, thereby reducing the labor intensity of the driver to a great extent.
2. Air-conditioning: M854-KQ/M854-KQS and M954-KQ models are equipped with air-conditioning cab, which can provide users with a relaxed and comfortable working environment whether it is cold or hot.

Company Profile

HangZhou Zhonghe international trade Co., ltd. is an enterprise specializing in the import and export of new and used tractors and harvesters. The company is located in HangZhou City, ZheJiang Province. The company has been engaged in agricultural machinery sales for more than 20 years. In 2571, we sell all kinds of agricultural machinery more than 2000 sets,including many world famous brands and domestic brands. The sales increases by 30% every year. Our company is becoming bigger and stronger step by step.
The company not only has rich sales experience, but also experienced after-sales team. It completely realizes the remote solution of the technical fault of the product. Patient after-sales service is the company's business purpose. After years of efforts, the company has many stable long-term partners. Because of the trust of our customers, the company is getting better and better.

We have a strong technical team, can be customized according to the customer's requirement
Our procurement staff purchase various brands of different types of agricultural machinery throughout the country every year. The company's perennial stock of vehicles is up to several thousands. After receiving the customer's deposit, the company can arrange  the delivery in the first time, to ensure that customers receive vehicles in the shortest time.

We support all kinds of payment methods, T/T, LC, credit card, etc

 

Packaging & Shipping

1. Professional sales staff provide you with one-stop agricultural machinery and equipment service solutions.
2. Repair replacement and return guarantee are provided together with the tractor, so that you have no worries after purchase.
3. A complete after-sales service system provides services for global agents and relieves the worries of agents.
 

FAQ

Q1. How do you ensure your quality?
We have 2 QC managers whom work on this field more than 15 years, they can test the tractors parts by parts, our working attitude is carefully, strictly and seriously  ;
Q2. Whether you could make our brand on your products?
Yes. We can print your Logo on both the products and the packages if you can meet our MOQ.
Q3. Whether you could make your products by our color?
Yes, The color of products can be customized if you can meet our MOQ.
Q4.How to guarantee the quality of your products?
1.Strict detection during production.
2.Strict sampling inspection on products before shipment and intact product packaging ensured.
 

###

Drive Type 4WD
Rated Power 64 KW
Place of Origin Suzhou
Video outgoing-inspection: PROVIDED
Brand Name KUBOTA
Model Number M854K
Applicable Industries: Farms
Weight 3035 KG
Year of Manufacture 2018
Rated revolving speed ( rpm ) 2500
SIZE 4445*2215*2605
Number of cylinder 4
Tire Specifications 12.4-24/16.9-30
Wheel Base 2350
Transmission Box 12F+12R
Min. Ground Clearance 485mm

###

Drive Type 4WD
Rated Power 64 KW
Place of Origin Suzhou
Video outgoing-inspection: PROVIDED
Brand Name KUBOTA
Model Number M854K
Applicable Industries: Farms
Weight 3035 KG
Year of Manufacture 2018
Rated revolving speed ( rpm ) 2500
SIZE 4445*2215*2605
Number of cylinder 4
Tire Specifications 12.4-24/16.9-30
Wheel Base 2350
Transmission Box 12F+12R
Min. Ground Clearance 485mm

Screw Shaft Types

If you're looking for a screw shaft, but aren't sure which type to buy, you're in luck. In this article, we'll talk about the different types, including Threaded shank, Round head, and Machined. Once you've read it, you'll know which type to buy. Then, you can decide whether you want a ball screw nut or a threaded shank.

Machined screw shafts

Besides the standard stainless steel shaft, manufacturers also provide a variety of other materials, such as titanium, bronze, and brass. In addition to stainless steel, manufacturers also provide a variety of top-coating options, including zinc, brass, and chromium. Aluminum screws are not particularly durable and are easily affected by weather. Most screw shafts feature self-locking mechanisms. They are especially useful in C-clamps, vises, and screw-top container lids.
For applications where accuracy is vital, a ball screw shaft needs to be annealed. A heat treatment can be performed on the ball screw shaft to ensure that both ends are heated evenly. In this process, the shaft will be more durable, while maintaining its high-precision properties. These screw shafts are a key component in computer-controlled motion-control systems, wire bonding, and other industries that require high-precision and high-quality performance.
Depending on the material used, screw shafts can be made of stainless steel or titanium. High-precision CNC machines and lathes are typically used to manufacture screw shafts. Various shapes and sizes are available, each with a specific application. Whether you need a small or large screw, you can find one to fit your needs. And since each size requires a different material, your choice of material is important as well.
In general, the materials used for machining screw shafts are steel, stainless steel, titanium, brass, bronze, and aluminum. Metals that resist corrosion are also commonly used. Other materials for screw shafts are Teflon, nylon, and nylon. You can also find threaded screw shafts in materials such as porcelain, glass, and ceramic. If you want to use your screws in a unique material, consider purchasing a customized one.
screwshaft

Ball screw nuts

If you have a screw shaft, the last thing you want to worry about is the ball nut slipping off. To prevent this, you can place a temporary stop in the shaft's grooves to ensure that the ball nut does not slide off. When you remove the stop, you can then install the ball screw nut. But, before you can install the ball screw nut, you have to make sure that you have a good grip on the shaft.
When selecting ball screw nuts, it's important to consider how much preload you need to apply to avoid excessive backlash. Preloading eliminates this problem by making the ball nut compact. It also prevents backlash, which is lost motion caused by clearance between the ball and nut. Backlash disrupts repeatability and accuracy. This is where spacer preloading comes in. You can insert a spacer between the two ball nuts to transmit the force to the nut. However, you should keep in mind that this method reduces the load capacity of the ball screw.
The critical speed of a screw is the maximum rotating speed before it whips. This critical speed is influenced by several factors, including the diameter of the screw shaft, the number of support elements, and the material. By adjusting these factors, you can reduce the number of components used and the amount of time it takes to assemble the screw shaft. In addition, you can also reduce the number of components and avoid stacking tolerances. However, the critical speed of plastic nuts is limited due to sliding friction.
The ball screw nut has several characteristics that make it unique. Its most prominent feature is the presence of ball bearings. These balls help reduce friction between the screw nut and the shaft. Without ball bearings, the friction would be too high to function properly. Another important characteristic is the groove profile of the nut and ball. These two features ensure that the ball and the nut meet at two points. You'll be amazed by the results of the work of these ball screw nuts.
screwshaft

Threaded shank

Wood screws are usually not fully threaded because the shank has an unthreaded portion at the top. This shoulder part forces the screw to compress two pieces of wood, which prevents the screw from overheating and compromising the materials strength. As the screw is threaded partially up, it is not as difficult to remove as a fully threaded screw. However, it is important to note that a wood screw will not hold as tightly as one with a fully threaded shank.
In addition to being universal, screw threads can be of different sizes. For example, a M8 screw has a thread pitch of 1.25 mm. To avoid confusion, screw thread pitches are commonly given with a multiplication sign. For example, M8x1 means that the screw is eight mm in diameter but has a thread pitch of one mm per 360-degree rotation. Those who are not familiar with these dimensions may find it confusing.
The OD of the threaded portion of a bolt is generally smaller than the OD of the nut. If the shank is too deep for the nut to fit, the threads may bottom out. This is why it's important to use a thread-cutting bit with a small thread diameter. You can use a micrometer or caliper to measure the thread diameter. This tool will also allow you to easily identify which screw size fits where and how well.
The metric system is the most widely used. Fasteners with DIN numbers are generally metric in size. This makes them very useful for industrial settings. You can find metric-sized screws anywhere, as long as you buy them from a reputable manufacturer. These fasteners also come with a dog point, which is used for safety wire. If the screw needs to be replaced, the shank can be drilled with a hole for a safety wire or for a dog-point.

Round head

A round head screw is the most common type used for machine screws. Other common types include truss head, flat head, and hexed head. Each has a different profile and are used for different purposes. A round head screw is typically wider than a flat or a hexed head, and has a slightly rounded surface. These screws are useful for projects involving sheet metal or sheet-metal parts. Round heads are usually slightly wider than a hex head screw, and they may also be used as a substitute for washers in certain applications. However, truss heads are not necessary for every project.
A wood screw has a smooth shank that protrudes above the surface of the material it is attaching. A metal screw has a threaded shaft that is fully threaded from head to point, and a fully threaded shaft provides more bite. Two common head styles are round head and pan head. If the task requires the screw to be flush or countersunk, the round head will be the best choice.
Another type is the Reed & Prince screw drive. These are similar to Phillips screws but have a 75-degree V shape. They are commonly used in marine hardware and are also known as BNAE NFL22-070. This type is also used for steel plate hangers. In addition to round head and pan head screws, there are a variety of other screw types. You can even get a head with a slotted head if you know where to look.
Screw diameters are specified according to the ISO 261 or ISO 262 standards. An M8 screw has a diameter of 8.25 mm. The M8 screw has a pitch of 1.25 mm, which is equivalent to one mm per 360 degrees. There are several other standard screw sizes and thread diameters available. You can find them all by consulting the relevant standards. But remember, the metric system is the most popular.
screwshaft

Self-locking mechanism

A self-locking mechanism for a screw shaft is a device that secures the screw to its supporting member in a failure position. The locking mechanism provides a positive connection between the screw shaft and the control surface during normal operation, and locks the screw to its supporting member when the screw fails. Previous attempts to solve this problem have typically used secondary nuts with free play on the screw, which were intentionally designed to jam when loaded. However, such a device can be unreliable, which is why the present invention offers a more robust and reliable locking mechanism.
The self-locking function of a screw depends on several factors, including its pitch angle and the coefficient of friction of the threads. The angle of friction must be less than the tangent of the material pairing to prevent untightening of the screw. Screws with self-locking mechanisms have an efficiency e lower than 50%, which is less than half. Self-locking screws also have the benefit of being less efficient than a standard screw.
Unlike a normal screw, a self-locking screw can be turned in either direction. The nut 22 rotates with the screw shaft, and the member 23 is translated in an axial direction. Regardless of the direction of the rotation of the screw, this axial translation will result in the opposite moment to that input moment. While screw self-locking mechanisms are typically less expensive, they are more reliable and durable.
Another important feature of self-locking screws is that they are not susceptible to independent loosening. The screw cannot rotate without a certain amount of torque. In addition, a self-locking screw shaft must have a small wedge with a smaller half-angle than the arctangent of the static friction. This means that the torque applied by the driver must be greater than the torque needed to overcome the friction.