Product Description

Product Description

Features of Iseki T954 tractor
Equipped with a high-performance diesel engine, it adopts a Per-kins vertical water-cooled 4-stroke 4-cylinder, a large-displacement high-performance diesel engine with a total displacement of 4400cc and 98.6 horsepower. Low fuel consumption, low vibration, low noise, high reliability, strong power, can easily cope with continuous operation of various loads. The fully open engine hood is adopted, and the maintenance of the engine before and after operation is simple and convenient.
Equipped with a cab with excellent sound insulation, it can work in a comfortable environment and greatly reduce the operator’s fatigue. The cab is equipped with heating and cooling air conditioners, which can maximize the comfort of the operator when working, no matter in spring, summer, autumn or winter.

1. No clutch switching
The forward and reverse of the machine can be simply completed by operating the orange handle on the left side of the steering wheel. In addition, the machine has a clutchless operation function, so it can easily handle the operation in the corners of the field.

2. Premium seats with shock absorption
The high-grade seat with shock absorption ensures long-term comfortable work, and the seat back, forward and backward movement and height of the seat can be adjusted freely, ensuring that the operator is in the most comfortable position at any time. condition to operate the machine.

3. Equipped with air conditioner
The T954 with a cab is equipped with a manual air conditioner. It is easy to switch between air conditioning and heating, and the temperature setting is also very simple. No matter spring, summer, autumn or winter, it can ensure comfortable work.

4. Large Dashboard
A large instrument panel is designed in front of the seat, and the operation status of the machine is clearly visible at a glance, which is convenient for the operator to confirm, thus ensuring safe operation.

5. Large mirrors
Large mirrors are used to provide good rear visibility, making it easy for the operator to confirm the situation behind.

6. Hatchback rear window
The hatchback window is adopted, so the situation behind the vehicle can be seen at a glance when reversing, making it easy to confirm.

7. Super hydraulic lifting force
Strong hydraulic lifting force: 3300kgf, even heavy work machinery can easily handle it.

8. Multi-speed transmission (F12/R12)
The multi-speed transmission with 12 forward and 12 backward speeds is adopted, and the multi-speed transmission adjustment can be perfectly adapted to any operating conditions.

9. Independent PTO (Power Take Off)
The walking part is equipped with an independent PTO clutch, which can be switched in or out of PTO mode with a single touch. In addition, the PTO can continue to work even when the machine is stopped, so it can effectively prevent the grass from clogging the machine when the forage work is performed.

10. Large capacity fuel tank (100L)
Equipped with a 100L large-capacity fuel tank, it can ensure long-term contact operations.

11. External hydraulic pressure (makes 3-way valve possible)
The external hydraulic standard is a 1-port valve, and the external hydraulic pressure of this machine can reach a maximum of 3-port valve, which can be suitable for any working machine.

12. Herringbone pattern tires (standard configuration)
Equipped with open herringbone pattern tires, it can be used in both water and dry fields, which enables the machine to exert its high adhesion and greatly improve the walking performance.

 

Detailed Photos

 

FAQ

Q1. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages
before you pay the balance.
Q2. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q3. How about your delivery time?
A: Generally, it will take 15 days after receiving your advance payment. The specific delivery time depends
on the items and the quantity of your order.
Q4: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them,
no matter where they come from.

An Overview of Worm Shafts and Gears

This article provides an overview of worm shafts and gears, including the type of toothing and deflection they experience. Other topics covered include the use of aluminum versus bronze worm shafts, calculating worm shaft deflection and lubrication. A thorough understanding of these issues will help you to design better gearboxes and other worm gear mechanisms. For further information, please visit the related websites. We also hope that you will find this article informative.
worm shaft

Double throat worm gears

The pitch diameter of a worm and the pitch of its worm wheel must be equal. The two types of worm gears have the same pitch diameter, but the difference lies in their axial and circular pitches. The pitch diameter is the distance between the worm’s teeth along its axis and the pitch diameter of the larger gear. Worms are made with left-handed or right-handed threads. The lead of the worm is the distance a point on the thread travels during one revolution of the worm gear. The backlash measurement should be made in a few different places on the gear wheel, as a large amount of backlash implies tooth spacing.
A double-throat worm gear is designed for high-load applications. It provides the tightest connection between worm and gear. It is crucial to mount a worm gear assembly correctly. The keyway design requires several points of contact, which block shaft rotation and help transfer torque to the gear. After determining the location of the keyway, a hole is drilled into the hub, which is then screwed into the gear.
The dual-threaded design of worm gears allows them to withstand heavy loads without slipping or tearing out of the worm. A double-throat worm gear provides the tightest connection between worm and gear, and is therefore ideal for hoisting applications. The self-locking nature of the worm gear is another advantage. If the worm gears are designed well, they are excellent for reducing speeds, as they are self-locking.
When choosing a worm, the number of threads that a worm has is critical. Thread starts determine the reduction ratio of a pair, so the higher the threads, the greater the ratio. The same is true for the worm helix angles, which can be one, two, or three threads long. This varies between a single thread and a double-throat worm gear, and it is crucial to consider the helix angle when selecting a worm.
Double-throat worm gears differ in their profile from the actual gear. Double-throat worm gears are especially useful in applications where noise is an issue. In addition to their low noise, worm gears can absorb shock loads. A double-throat worm gear is also a popular choice for many different types of applications. These gears are also commonly used for hoisting equipment. Its tooth profile is different from that of the actual gear.
worm shaft

Bronze or aluminum worm shafts

When selecting a worm, a few things should be kept in mind. The material of the shaft should be either bronze or aluminum. The worm itself is the primary component, but there are also addendum gears that are available. The total number of teeth on both the worm and the addendum gear should be greater than forty. The axial pitch of the worm needs to match the circular pitch of the larger gear.
The most common material used for worm gears is bronze because of its desirable mechanical properties. Bronze is a broad term referring to various copper alloys, including copper-nickel and copper-aluminum. Bronze is most commonly created by alloying copper with tin and aluminum. In some cases, this combination creates brass, which is a similar metal to bronze. The latter is less expensive and suitable for light loads.
There are many benefits to bronze worm gears. They are strong and durable, and they offer excellent wear-resistance. In contrast to steel worms, bronze worm gears are quieter than their counterparts. They also require no lubrication and are corrosion-resistant. Bronze worms are popular with small, light-weight machines, as they are easy to maintain. You can read more about worm gears in CZPT’s CZPT.
Although bronze or aluminum worm shafts are the most common, both materials are equally suitable for a variety of applications. A bronze shaft is often called bronze but may actually be brass. Historically, worm gears were made of SAE 65 gear bronze. However, newer materials have been introduced. SAE 65 gear bronze (UNS C90700) remains the preferred material. For high-volume applications, the material savings can be considerable.
Both types of worms are essentially the same in size and shape, but the lead on the left and right tooth surfaces can vary. This allows for precise adjustment of the backlash on a worm without changing the center distance between the worm gear. The different sizes of worms also make them easier to manufacture and maintain. But if you want an especially small worm for an industrial application, you should consider bronze or aluminum.

Calculation of worm shaft deflection

The centre-line distance of a worm gear and the number of worm teeth play a crucial role in the deflection of the rotor. These parameters should be entered into the tool in the same units as the main calculation. The selected variant is then transferred to the main calculation. The deflection of the worm gear can be calculated from the angle at which the worm teeth shrink. The following calculation is helpful for designing a worm gear.
Worm gears are widely used in industrial applications due to their high transmittable torques and large gear ratios. Their hard/soft material combination makes them ideally suited for a wide range of applications. The worm shaft is typically made of case-hardened steel, and the worm wheel is fabricated from a copper-tin-bronze alloy. In most cases, the wheel is the area of contact with the gear. Worm gears also have a low deflection, as high shaft deflection can affect the transmission accuracy and increase wear.
Another method for determining worm shaft deflection is to use the tooth-dependent bending stiffness of a worm gear’s toothing. By calculating the stiffness of the individual sections of a worm shaft, the stiffness of the entire worm can be determined. The approximate tooth area is shown in figure 5.
Another way to calculate worm shaft deflection is by using the FEM method. The simulation tool uses an analytical model of the worm gear shaft to determine the deflection of the worm. It is based on a two-dimensional model, which is more suitable for simulation. Then, you need to input the worm gear’s pitch angle and the toothing to calculate the maximum deflection.
worm shaft

Lubrication of worm shafts

In order to protect the gears, worm drives require lubricants that offer excellent anti-wear protection, high oxidation resistance, and low friction. While mineral oil lubricants are widely used, synthetic base oils have better performance characteristics and lower operating temperatures. The Arrhenius Rate Rule states that chemical reactions double every ten degrees C. Synthetic lubricants are the best choice for these applications.
Synthetics and compounded mineral oils are the most popular lubricants for worm gears. These oils are formulated with mineral basestock and four to six percent synthetic fatty acid. Surface-active additives give compounded gear oils outstanding lubricity and prevent sliding wear. These oils are suited for high-speed applications, including worm gears. However, synthetic oil has the disadvantage of being incompatible with polycarbonate and some paints.
Synthetic lubricants are expensive, but they can increase worm gear efficiency and operating life. Synthetic lubricants typically fall into two categories: PAO synthetic oils and EP synthetic oils. The latter has a higher viscosity index and can be used at a range of temperatures. Synthetic lubricants often contain anti-wear additives and EP (anti-wear).
Worm gears are frequently mounted over or under the gearbox. The proper lubrication is essential to ensure the correct mounting and operation. Oftentimes, inadequate lubrication can cause the unit to fail sooner than expected. Because of this, a technician may not make a connection between the lack of lube and the failure of the unit. It is important to follow the manufacturer’s recommendations and use high-quality lubricant for your gearbox.
Worm drives reduce backlash by minimizing the play between gear teeth. Backlash can cause damage if unbalanced forces are introduced. Worm drives are lightweight and durable because they have minimal moving parts. In addition, worm drives are low-noise and vibration. In addition, their sliding motion scrapes away excess lubricant. The constant sliding action generates a high amount of heat, which is why superior lubrication is critical.
Oils with a high film strength and excellent adhesion are ideal for lubrication of worm gears. Some of these oils contain sulfur, which can etch a bronze gear. In order to avoid this, it is imperative to use a lubricant that has high film strength and prevents asperities from welding. The ideal lubricant for worm gears is one that provides excellent film strength and does not contain sulfur.