Product Description

Product Description

Can be customized according to the needs of various trailers, Factory direct sales, big discount.

Detailed Photos

Product Parameters

  

Type	Rear tipper trailer			Tire model
Specifications	Loading capacity	Axle	Number of tires	1100R20 1200R20 12R22.5 (Other Size / Single Super Tire Contact with Supplier)
20-100ton(capacity can be customized)	27/40CBM   60 ton	3 Axle	12
	45CBM     60-80ton	4 Axle	16
	55CBM     60-80 ton	5 Axle	20
	65CBM    60-100 ton	6 Axle	24

 

Total height	3000mm -3500mm
Height of breast board	1800mm-2500mm
Dimensions(LxWxH)	6500 to 17500mm x 2500mm-2550 x 1500mm-4000mm
Cylinder	Haiwo brand
Axle and Brand	13T/16T/18T Leitewei , (2/4 axle,fuhua/BPW to choose)
Tire brand	12r22.5  (Chengshan, Xihu (West Lake) Dis. and other 3-Pack tires)
Axle spacing	1310mm
Tare weight	4tons to 12 tons
Rims	8.5-20, 9.0-20
Brake System	Double line pneumatic braking system with CZPT emergency relay valve
Front axle lifting	1/2/3/4 axle Optional
Plate spring	Ten pieces 13mm(widen)
Suspension System	Heavy machinery suspension / air suspension
Main Beam	Height 500mm Q345 carbon steel,thickness 10mm(height Optional)
Up and down the wing	Upper16mm,lower18mm ,Middle web10mm(Optional)
Kingpin	2′ or 3.5′ interchangeable,(50.mm-90mm interchangeable)
Landing Gear	28 Tons ,Two speed manual (Yost or CZPT Can be choose)
Electrical System	1.Voltage: 24v  2. Receptacle: 7 ways (7 wire harness) German standard
Lights and Reflectors	Rear light, rear reflector, turn indicative light, side reflector, fog lamp, number plate light
Painting	Shot blast to SA 2.5 Standard prior to application of primer, polyurethane top coat. Total DFT not less than 100μm;Any color will be available
Tool Box	One tool box with a set of standard trailer tools
Spare Tyre Carrier	One piece or 2 pieces
Packing	Polish with wax before shipping
Color	All colors can be customized

 

 

Packaging & Shipping

1.The trailer is waxed before it is packed to prevent seawater from corroding the trailer surface.

2.We will choose the most suitable transportation method for customers and reduce the transportation costs of customers.
 

Company Profile

ZheJiang CZPT Special Vehicle Co., Ltd. is located in HangZhou City, ZheJiang Province. We operate in good faith and specialize in R & D, mass production, retail sales of semi-trailer and other transportation equipment. With international advanced and first-class integrated production line, special trailer development team and the combination of Chinese and foreign technology, various types of trailers (such as bulk cement tank trailer, retractable semi-trailer, detachable gooseneck trailer, modular hydraulic trailer, etc.) can be customized. Based on the rich traffic advantages and resources in Central China, letway is committed to providing global customers with high-quality and cost-effective transportation equipment.

Our Advantages

Price advantage:
We sell in factories without middlemen, so our price will be better than that of trading companies

Quality advantage:
From the moment the customer places an order, we will be equipped with a professional team. Professional personnel are responsible for the design, production, tracking and transportation. We adopt the principle of responsibility system, and the quality can be guaranteed.

Professional advantages:
We have our own R & D team and design team. Our team has received professional training and good education, and is skilled in using CAD, SW and other drawing tools

Service advantages:
The staff will give the most favorable and accurate quotation to the customer within 2 hours according to the customer’s requirements, make the most appropriate purchase scheme for the customer, and formulate the perfect solution according to the customer’s after-sales demand within 10 hours.
 

FAQ

1.What is the delivery date?
It usually takes 15 to 25 days of receiving the deposit.

2.Payment and mode of transportation?
We accept both T/T and D/P .
Bulk, rolling, loading, land transportation, I will actively provide customers with cheaper transportation.

3. If Our Vehicle/Trailer Can Couple With Your Tractor Head ?
– 90% Of The Truck In The Market Can Coupling With Our Vehicle, As Howo, Shacman, Beiben, Volve…
– If Other Brand Truck Head, Please Inform Our Sales Manager Before Order Placing.

4.Can you satisfy my special requirement?
Definitely!We can make the trailers or trucks based on your requirement.

Screw Shaft Features Explained

When choosing the screw shaft for your application, you should consider the features of the screws: threads, lead, pitch, helix angle, and more. You may be wondering what these features mean and how they affect the screw’s performance. This article explains the differences between these factors. The following are the features that affect the performance of screws and their properties. You can use these to make an informed decision and purchase the right screw. You can learn more about these features by reading the following articles.

Threads

The major diameter of a screw thread is the larger of the 2 extreme diameters. The major diameter of a screw is also known as the outside diameter. This dimension can’t be directly measured, but can be determined by measuring the distance between adjacent sides of the thread. In addition, the mean area of a screw thread is known as the pitch. The diameter of the thread and pitch line are directly proportional to the overall size of the screw.
The threads are classified by the diameter and pitch. The major diameter of a screw shaft has the largest number of threads; the smaller diameter is called the minor diameter. The thread angle, also known as the helix angle, is measured perpendicular to the axis of the screw. The major diameter is the largest part of the screw; the minor diameter is the lower end of the screw. The thread angle is the half distance between the major and minor diameters. The minor diameter is the outer surface of the screw, while the top surface corresponds to the major diameter.
The pitch is measured at the crest of a thread. In other words, a 16-pitch thread has a diameter of 1 sixteenth of the screw shaft’s diameter. The actual diameter is 0.03125 inches. Moreover, a large number of manufacturers use this measurement to determine the thread pitch. The pitch diameter is a critical factor in successful mating of male and female threads. So, when determining the pitch diameter, you need to check the thread pitch plate of a screw.

Lead

In screw shaft applications, a solid, corrosion-resistant material is an important requirement. Lead screws are a robust choice, which ensure shaft direction accuracy. This material is widely used in lathes and measuring instruments. They have black oxide coatings and are suited for environments where rusting is not acceptable. These screws are also relatively inexpensive. Here are some advantages of lead screws. They are highly durable, cost-effective, and offer high reliability.
A lead screw system may have multiple starts, or threads that run parallel to each other. The lead is the distance the nut travels along the shaft during a single revolution. The smaller the lead, the tighter the thread. The lead can also be expressed as the pitch, which is the distance between adjacent thread crests or troughs. A lead screw has a smaller pitch than a nut, and the smaller the lead, the greater its linear speed.
When choosing lead screws, the critical speed is the maximum number of revolutions per minute. This is determined by the minor diameter of the shaft and its length. The critical speed should never be exceeded or the lead will become distorted or cracked. The recommended operational speed is around 80 percent of the evaluated critical speed. Moreover, the lead screw must be properly aligned to avoid excessive vibrations. In addition, the screw pitch must be within the design tolerance of the shaft.

Pitch

The pitch of a screw shaft can be viewed as the distance between the crest of a thread and the surface where the threads meet. In mathematics, the pitch is equivalent to the length of 1 wavelength. The pitch of a screw shaft also relates to the diameter of the threads. In the following, the pitch of a screw is explained. It is important to note that the pitch of a screw is not a metric measurement. In the following, we will define the 2 terms and discuss how they relate to 1 another.
A screw’s pitch is not the same in all countries. The United Kingdom, Canada, and the United States have standardized screw threads according to the UN system. Therefore, there is a need to specify the pitch of a screw shaft when a screw is being manufactured. The standardization of pitch and diameter has also reduced the cost of screw manufacturing. Nevertheless, screw threads are still expensive. The United Kingdom, Canada, and the United States have introduced a system for the calculation of screw pitch.
The pitch of a lead screw is the same as that of a lead screw. The diameter is 0.25 inches and the circumference is 0.79 inches. When calculating the mechanical advantage of a screw, divide the diameter by its pitch. The larger the pitch, the more threads the screw has, increasing its critical speed and stiffness. The pitch of a screw shaft is also proportional to the number of starts in the shaft.

Helix angle

The helix angle of a screw shaft is the angle formed between the circumference of the cylinder and its helix. Both of these angles must be equal to 90 degrees. The larger the lead angle, the smaller the helix angle. Some reference materials refer to angle B as the helix angle. However, the actual angle is derived from calculating the screw geometry. Read on for more information. Listed below are some of the differences between helix angles and lead angles.
High helix screws have a long lead. This length reduces the number of effective turns of the screw. Because of this, fine pitch screws are usually used for small movements. A typical example is a 16-mm x 5-inch screw. Another example of a fine pitch screw is a 12x2mm screw. It is used for small moves. This type of screw has a lower lead angle than a high-helix screw.
A screw’s helix angle refers to the relative angle of the flight of the helix to the plane of the screw axis. While screw helix angles are not often altered from the standard square pitch, they can have an effect on processing. Changing the helix angle is more common in two-stage screws, special mixing screws, and metering screws. When a screw is designed for this function, it should be able to handle the materials it is made of.

Size

The diameter of a screw is its diameter, measured from the head to the shaft. Screw diameters are standardized by the American Society of Mechanical Engineers. The diameters of screws range from 3/50 inches to 16 inches, and more recently, fractions of an inch have been added. However, shaft diameters may vary depending on the job, so it is important to know the right size for the job. The size chart below shows the common sizes for screws.
Screws are generally referred to by their gauge, which is the major diameter. Screws with a major diameter less than a quarter of an inch are usually labeled as #0 to #14 and larger screws are labeled as sizes in fractions of an inch. There are also decimal equivalents of each screw size. These measurements will help you choose the correct size for your project. The screws with the smaller diameters were not tested.
In the previous section, we described the different shaft sizes and their specifications. These screw sizes are usually indicated by fractions of an inch, followed by a number of threads per inch. For example, a ten-inch screw has a shaft size of 2” with a thread pitch of 1/4″, and it has a diameter of 2 inches. This screw is welded to a two-inch Sch. 40 pipe. Alternatively, it can be welded to a 9-inch O.A.L. pipe.

Shape

Screws come in a wide variety of sizes and shapes, from the size of a quarter to the diameter of a U.S. quarter. Screws’ main function is to hold objects together and to translate torque into linear force. The shape of a screw shaft, if it is round, is the primary characteristic used to define its use. The following chart shows how the screw shaft differs from a quarter:
The shape of a screw shaft is determined by 2 features: its major diameter, or distance from the outer edge of the thread on 1 side to the inner smooth surface of the shaft. These are generally 2 to 16 millimeters in diameter. Screw shafts can have either a fully threaded shank or a half-threaded shank, with the latter providing better stability. Regardless of whether the screw shaft is round or domed, it is important to understand the different characteristics of a screw before attempting to install it into a project.
The screw shaft’s diameter is also important to its application. The ball circle diameter refers to the distance between the center of 2 opposite balls in contact with the grooves. The root diameter, on the other hand, refers to the distance between the bottommost grooves of the screw shaft. These are the 2 main measurements that define the screw’s overall size. Pitch and nominal diameter are important measurements for a screw’s performance in a particular application.

Lubrication

In most cases, lubrication of a screw shaft is accomplished with grease. Grease is made up of mineral or synthetic oil, thickening agent, and additives. The thickening agent can be a variety of different substances, including lithium, bentonite, aluminum, and barium complexes. A common classification for lubricating grease is NLGI Grade. While this may not be necessary when specifying the type of grease to use for a particular application, it is a useful qualitative measure.
When selecting a lubricant for a screw shaft, the operating temperature and the speed of the shaft determine the type of oil to use. Too much oil can result in heat buildup, while too little can lead to excessive wear and friction. The proper lubrication of a screw shaft directly affects the temperature rise of a ball screw, and the life of the assembly. To ensure the proper lubrication, follow the guidelines below.
Ideally, a low lubrication level is appropriate for medium-sized feed stuff factories. High lubrication level is appropriate for larger feed stuff factories. However, in low-speed applications, the lubrication level should be sufficiently high to ensure that the screws run freely. This is the only way to reduce friction and ensure the longest life possible. Lubrication of screw shafts is an important consideration for any screw.