Product Description

About us

HangZhou Sirui Precision Manufacturing Technology Co., Ltd is an integrated service company dedicated to product development, production and sales as well as CNC machining,we can not only supplying our customers stable quality products, but also more excellent service. 

We have 2 senior R & D engineers, quality inspection and skilled workers 31 people. The founders have 15 years of manufacturing experience and 10 years of design and development experience. Any of your ideas, designs, prototypes or samples, we will make it.       Welcome to offer a trial order with your drawings! You can send us the drawing in PDF, CAD, STEP etc. 

Mainly used in aerospace, auto parts, medical instruments, communications, rail transit equipment industry, new energy series equipment, agricultural machinery,industrial electrical equipment, electronics, household appliances,etc.

FAQ 
1. How long and how can I get quotation from your company? 
We will reply you in 2 hours if getting detailed information during working days. 
In order to quote you as soon as possible, please provide us the following information together with your inquiry. 
    1). Detailed drawings (CAD/PDF/DWG/IGS/STEP/JPG) 
    2). Materials required 
    3). Surface treatment 
    4). Quantity (per order/per month/annual) 
    5). Any special demands or requirements, such as packing, labels,delivery,etc. 

2: What shall we do if we do not have drawings?
Please send your sample to our factory, then we can do the reverse engineering or provideyou better solutions. Please send us pictures or drafts with dimensions (Length, Height, Width),CAD or 3D file will be made for you if placed order.
 
3.  How do you control the quality? 
(1) Material inspection--Check the material surface and roughly dimension. 
(2) Production first inspection--To ensure the critical dimension in mass production. 
(3) Sampling inspection--Check the quality before sending to the warehouse. 
(4) Pre-shipment inspection--100% inspected by QC assistants before shipment. 
 
4.  What will you do if we receive poor quality parts? 
Please kindly send us the pictures, our engineers will find the solutions and remake them for you asap. 
 
5. If I need urgent delivery, can you help? 
Of course!  You need to tell us the delivery time when placing the order, and we will do our best to adjust the production schedule. 
 
6.  Can you provide samples? 
We can offer free samples for small existing parts, but for big and high-value products, samples will be charged. 
 
7. How about the transportation? 
You can choose any mode of transportation you need, sea delivery, air delivery or express delivery. 
 
8.  How about the lead time? 
Generally, 1-2 weeks for samples, 3-4 weeks for mass production. 
 
9. How about the payment terms? 
For new customers, we prefer to use T/T in advance.  We can accept L/C, D/P for old customers. 
 
10. Can we sign NDA? 
Sure.  We never divulge any customer's information to anyone else.

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What is a drive shaft?

If you notice a clicking noise while driving, it is most likely the driveshaft. An experienced auto mechanic will be able to tell you if the noise is coming from both sides or from one side. If it only happens on one side, you should check it. If you notice noise on both sides, you should contact a mechanic. In either case, a replacement driveshaft should be easy to find.

The drive shaft is a mechanical part

A driveshaft is a mechanical device that transmits rotation and torque from the engine to the wheels of the vehicle. This component is essential to the operation of any driveline, as the mechanical power from the engine is transmitted to the PTO (power take-off) shaft, which hydraulically transmits that power to connected equipment. Different drive shafts contain different combinations of joints to compensate for changes in shaft length and angle. Some types of drive shafts include connecting shafts, internal constant velocity joints, and external fixed joints. They also contain anti-lock system rings and torsional dampers to prevent overloading the axle or causing the wheels to lock.
Although driveshafts are relatively light, they need to handle a lot of torque. Torque applied to the drive shaft produces torsional and shear stresses. Because they have to withstand torque, these shafts are designed to be lightweight and have little inertia or weight. Therefore, they usually have a joint, coupling or rod between the two parts. Components can also be bent to accommodate changes in the distance between them.
The drive shaft can be made from a variety of materials. The most common material for these components is steel, although alloy steels are often used for high-strength applications. Alloy steel, chromium or vanadium are other materials that can be used. The type of material used depends on the application and size of the component. In many cases, metal driveshafts are the most durable and cheapest option. Plastic shafts are used for light duty applications and have different torque levels than metal shafts.

It transfers power from the engine to the wheels

A car's powertrain consists of an electric motor, transmission, and differential. Each section performs a specific job. In a rear-wheel drive vehicle, the power generated by the engine is transmitted to the rear tires. This arrangement improves braking and handling. The differential controls how much power each wheel receives. The torque of the engine is transferred to the wheels according to its speed.
The transmission transfers power from the engine to the wheels. It is also called "transgender". Its job is to ensure power is delivered to the wheels. Electric cars cannot drive themselves and require a gearbox to drive forward. It also controls how much power reaches the wheels at any given moment. The transmission is the last part of the power transmission chain. Despite its many names, the transmission is the most complex component of a car's powertrain.
The driveshaft is a long steel tube that transmits mechanical power from the transmission to the wheels. Cardan joints connect to the drive shaft and provide flexible pivot points. The differential assembly is mounted on the drive shaft, allowing the wheels to turn at different speeds. The differential allows the wheels to turn at different speeds and is very important when cornering. Axles are also important to the performance of the car.

It has a rubber boot that protects it from dust and moisture

To keep this boot in good condition, you should clean it with cold water and a rag. Never place it in the dryer or in direct sunlight. Heat can deteriorate the rubber and cause it to shrink or crack. To prolong the life of your rubber boots, apply rubber conditioner to them regularly. Indigenous peoples in the Amazon region collect latex sap from the bark of rubber trees. Then they put their feet on the fire to solidify the sap.

it has a U-shaped connector

The drive shaft has a U-joint that transfers rotational energy from the engine to the axle. Defective gimbal joints can cause vibrations when the vehicle is in motion. This vibration is often mistaken for a wheel balance problem. Wheel balance problems can cause the vehicle to vibrate while driving, while a U-joint failure can cause the vehicle to vibrate when decelerating and accelerating, and stop when the vehicle is stopped.
The drive shaft is connected to the transmission and differential using a U-joint. It allows for small changes in position between the two components. This prevents the differential and transmission from remaining perfectly aligned. The U-joint also allows the drive shaft to be connected unconstrained, allowing the vehicle to move. Its main purpose is to transmit electricity. Of all types of elastic couplings, U-joints are the oldest.
Your vehicle's U-joints should be inspected at least twice a year, and the joints should be greased. When checking the U-joint, you should hear a dull sound when changing gears. A clicking sound indicates insufficient grease in the bearing. If you hear or feel vibrations when shifting gears, you may need to service the bearings to prolong their life.

it has a slide-in tube

The telescopic design is a modern alternative to traditional driveshaft designs. This innovative design is based on an unconventional design philosophy that combines advances in material science and manufacturing processes. Therefore, they are more efficient and lighter than conventional designs. Slide-in tubes are a simple and efficient design solution for any vehicle application. Here are some of its benefits. Read on to learn why this type of shaft is ideal for many applications.
The telescopic drive shaft is an important part of the traditional automobile transmission system. These driveshafts allow linear motion of the two components, transmitting torque and rotation throughout the vehicle's driveline. They also absorb energy if the vehicle collides. Often referred to as foldable driveshafts, their popularity is directly dependent on the evolution of the automotive industry.

It uses a bearing press to replace worn or damaged U-joints

A bearing press is a device that uses a rotary press mechanism to install or remove worn or damaged U-joints from a drive shaft. With this tool, you can replace worn or damaged U-joints in your car with relative ease. The first step involves placing the drive shaft in the vise. Then, use the 11/16" socket to press the other cup in far enough to install the clips. If the cups don't fit, you can use a bearing press to remove them and repeat the process. After removing the U-joint, use a grease nipple Make sure the new grease nipple is installed correctly.
Worn or damaged U-joints are a major source of driveshaft failure. If one of them were damaged or damaged, the entire driveshaft could dislocate and the car would lose power. Unless you have a professional mechanic doing the repairs, you will have to replace the entire driveshaft. Fortunately, there are many ways to do this yourself.
If any of these warning signs appear on your vehicle, you should consider replacing the damaged or worn U-joint. Common symptoms of damaged U-joints include rattling or periodic squeaking when moving, rattling when shifting, wobbling when turning, or rusted oil seals. If you notice any of these symptoms, take your vehicle to a qualified mechanic for a full inspection. Neglecting to replace a worn or damaged u-joint on the driveshaft can result in expensive and dangerous repairs and can cause significant damage to your vehicle.

editor by czh