China high quality Powder Metallurgy Sintered Stainless Steel Gear for Automobile Parts with Good quality

Product Description

Iron alloy base sintered oil sleeve bushing by powder metallurgy

Material Iron powder, alloy powder,precious metal powder
Technology Sintering – Powder Metallurgy
  Certificate ISO9001/TS16949
Surface Treatment High frequency quenching, oil impregnation,CNC,vacuum cleaning,polishing,
Apperance No crumbling, cracks, exfoliation, voids, metal pitting and other defects
Process Flow
Powder mixing – Forming – Sintering – Oil impregnation – Sizing -Ultrasonic cleaning – Steam oxidation – Oil impregnation – Final inspection – Packing
Application Motorcycle parts, auto parts, Power Tools parts, Motor parts, electric Bicycle,

Production process of powder metallurgy
Powder mixing – Forming – Sintering – Oil impregnation – Sizing -Ultrasonic cleaning – Steam oxidation – Oil impregnation – Final inspection – Packing

A trained, qualified, and dedicated work force

  1. Engineering is our strength – we will help your designers convert your parts to cost-effective powdered metal parts.
  2. Every employee is trained to a standard of excellence.

Quality is designed into the process

  1. Consistent and committed attitude to quality first.

Critical characteristics are measured and controlled using the latest statistical methods

  1. Quality is always the first priority.
  2. Our subcontractors are held to the same high standards.


Application: Motor, Electric Cars, Motorcycle, Machinery
Hardness: Hardened Tooth Surface
Gear Position: Internal Gear
Manufacturing Method: Sintered Gear
Toothed Portion Shape: Spur Gear
Material: Stainless Steel
US$ 0/Piece
1 Piece(Min.Order)

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automobile gear

How does a synchronized transmission system operate in manual cars?

A synchronized transmission system is a key component of manual transmissions in cars. Here’s a detailed explanation:

1. Purpose of Synchronized Transmission:

The purpose of a synchronized transmission system is to facilitate smooth and effortless shifting between gears in a manual transmission. It ensures that the rotational speeds of the input shaft (connected to the engine) and the output shaft (connected to the wheels) match before engaging the selected gear.

2. Synchronizer Rings:

The synchronized transmission system utilizes synchronizer rings, also known as synchro rings or blockers, to achieve synchronization. These rings are mounted on the transmission’s main shaft and are responsible for equalizing rotational speeds between the input and output shafts.

3. Cone Clutch Design:

The synchronizer rings feature a cone clutch design. When the driver selects a gear using the gear lever, the synchro ring corresponding to that gear slides over the gear’s dog teeth on the output shaft. The synchro ring and the dog teeth have matching cone-shaped surfaces.

4. Friction and Synchronization:

As the synchro ring engages with the dog teeth, it creates friction between the cone surfaces. This friction helps equalize the speeds of the input and output shafts. The synchro ring synchronizes the rotational speeds of the selected gear and the output shaft, allowing for smooth gear engagement.

5. Blocking and Engagement:

Once the rotational speeds are synchronized, the driver can easily engage the selected gear by pressing the clutch pedal and shifting the gear lever. The synchro rings facilitate the engagement by temporarily blocking the dog teeth on the output shaft, allowing the gears to mesh smoothly without grinding or clashing.

6. Double-Clutching:

In some older manual transmissions or vehicles with non-synchronized transmissions, a technique called double-clutching is required for smooth gear engagement. Double-clutching involves an additional step of disengaging the clutch after shifting out of the current gear, briefly engaging the clutch to match the engine speed with the transmission speed, and then shifting into the desired gear while the clutch is disengaged again. This technique is not necessary in modern synchronized transmissions.

7. Benefits of Synchronized Transmission:

The synchronized transmission system offers several benefits, including:

  • Smooth shifting: The synchronizer rings enable seamless and smooth gear shifts, enhancing the overall driving experience.
  • Reduced wear and tear: By equalizing rotational speeds before gear engagement, the synchronized transmission system minimizes wear and tear on the gears, synchro rings, and other transmission components.
  • User-friendly operation: Synchronized transmissions are user-friendly, allowing drivers to shift gears effortlessly without the need for complex techniques like double-clutching.

In summary, a synchronized transmission system in manual cars utilizes synchronizer rings with cone clutch design to synchronize the rotational speeds of the input and output shafts. This enables smooth gear engagement and seamless shifting between gears, providing a user-friendly and efficient driving experience.

automobile gear

Can you explain the concept of downshifting and upshifting in an automobile?

Downshifting and upshifting are fundamental concepts in operating a manual transmission vehicle. Here’s a detailed explanation:

1. Upshifting:

Upshifting refers to the process of shifting to a higher gear while driving. It involves moving the gear lever from a lower-numbered gear to a higher-numbered gear. The purpose of upshifting is to increase the vehicle’s speed while maintaining fuel efficiency and reducing engine RPM. Upshifting is typically done as the engine reaches its optimal RPM range or when the vehicle has gained sufficient speed in the current gear.

2. Downshifting:

Downshifting is the opposite of upshifting and involves shifting to a lower gear. It requires moving the gear lever from a higher-numbered gear to a lower-numbered gear. Downshifting is used to decrease the vehicle’s speed, increase engine RPM, and provide more power when needed, such as during overtaking, ascending steep hills, or slowing down. It allows the engine to operate at a higher RPM range, providing better acceleration and engine braking.

3. Rev Matching:

When downshifting, an important technique called “rev matching” is often employed. Rev matching involves synchronizing the engine speed (RPM) with the rotational speed of the transmission and wheels for a smooth gear engagement. By blipping the throttle or “heel-and-toe” technique, the driver matches the engine RPM to the desired speed in the lower gear before engaging the clutch and shifting down. Rev matching minimizes drivetrain shock, reduces wear on the clutch, and ensures a seamless transition between gears.

4. Benefits of Downshifting:

Downshifting offers several benefits, including:

  • Improved acceleration: Downshifting to a lower gear provides more power and torque, allowing for quicker acceleration when needed.
  • Engine braking: By downshifting and utilizing engine braking, drivers can slow down the vehicle without relying solely on the brakes. This can help maintain control, reduce brake wear, and prevent overheating of the braking system on long descents.
  • Responsive driving: Downshifting allows drivers to have better control over the vehicle’s speed and responsiveness, especially in situations where immediate power is required.

5. Automatic Transmissions:

While the concept of upshifting and downshifting primarily applies to manual transmissions, modern automatic transmissions also incorporate similar principles. Automatic transmissions automatically shift gears based on factors such as vehicle speed, engine load, and driver input. They can upshift and downshift to optimize fuel efficiency, provide smooth acceleration, and deliver appropriate power based on driving conditions.

In summary, upshifting involves shifting to a higher gear to increase speed and maintain fuel efficiency, while downshifting involves shifting to a lower gear to decrease speed, increase power, and utilize engine braking. Downshifting offers benefits such as improved acceleration, engine braking, and responsive driving. Understanding the concept of shifting gears is essential for manual transmission operation and can enhance the driving experience and control over the vehicle.

automobile gear

Can you explain the role of gear ratios in an automobile transmission?

Gear ratios play a crucial role in an automobile transmission. Here’s a detailed explanation:

In an automobile transmission, the gear ratio refers to the ratio of the rotational speed of the engine’s input shaft to the rotational speed of the transmission output shaft, which is connected to the wheels. Different gear ratios are achieved by using gears of varying sizes.

1. Speed and Torque Conversion: The primary function of gear ratios is to convert the engine’s high rotational speed and low torque into lower rotational speed and higher torque at the wheels. Lower gear ratios (such as first or second gear) provide high torque multiplication, which is useful for starting the vehicle or climbing steep hills. Higher gear ratios (such as fifth or sixth gear) allow the engine to operate at lower speeds while maintaining higher vehicle speeds, providing better fuel efficiency and reduced engine wear.

2. Acceleration and Power: By selecting the appropriate gear ratio, the transmission enables the driver to control the vehicle’s acceleration and power delivery. Lower gear ratios provide quick acceleration by multiplying the engine’s torque output. During rapid acceleration, the transmission may stay in lower gears to keep the engine operating within its optimal power band. Higher gear ratios are used for cruising at higher speeds, where less torque is needed to maintain the vehicle’s momentum.

3. Engine Performance: Gear ratios are crucial for optimizing engine performance. Engines have a specific range of speeds called the power band, where they deliver the most power efficiently. By selecting the right gear ratio, the transmission keeps the engine operating within its power band, ensuring optimal performance and responsiveness. This improves the overall driving experience and allows the engine to operate at its most efficient point, resulting in better fuel economy.

4. Load and Terrain Adaptation: Different gear ratios allow the vehicle to adapt to varying loads and terrains. When encountering uphill gradients or carrying heavy loads, lower gear ratios are used to provide the necessary torque for overcoming resistance. Conversely, on flat roads or when the vehicle is lightly loaded, higher gear ratios are utilized to maintain speed while reducing engine RPM and improving fuel efficiency.

5. Gear Shifting: The availability of different gear ratios facilitates gear shifting in manual transmissions. As the vehicle accelerates, the driver can shift to higher gears to reach higher speeds while maintaining optimal engine performance. Similarly, when decelerating or coming to a stop, downshifting to lower gears allows for engine braking and better control of the vehicle.

6. Mechanical Advantage: Gear ratios provide a mechanical advantage by multiplying the engine’s torque output. Lower gear ratios offer higher torque multiplication, enabling the vehicle to overcome resistance and handle demanding tasks. This mechanical advantage is particularly useful during towing, off-road driving, or situations requiring increased traction.

Overall, gear ratios in automobile transmissions enable the engine’s power and torque to be transmitted to the wheels efficiently. They allow for speed and torque conversion, adaptation to different driving conditions, optimization of engine performance, and control over the vehicle’s acceleration and power delivery.

China high quality Powder Metallurgy Sintered Stainless Steel Gear for Automobile Parts with Good qualityChina high quality Powder Metallurgy Sintered Stainless Steel Gear for Automobile Parts with Good quality
editor by CX 2023-09-25