
61500040014 HOWO Shaanxi Leo100693A Exhaust Valve Spring Lower Seat
Product Model: 490B-03007-JDDiesel engine spring seat
We have continuously improved the quality of our 4g64 forklift engine, mast bearing for heli forklifts, Forklift Hydraulic Transmission over the years by increasing our independent innovation and applying standards and technologies to the process of product production. We take first place as the goal and starting point of all our work, and take innovation as our responsibility to challenge the impossible. The company has strong technical strength, complete processing and manufacturing methods, rich experience in production and management and a reliable product quality assurance system. We have a strong production capacity, and guaranteeing the delivery time is our eternal commitment to our customers.
Product Title: Valve Spring Seat
Product Model: 490B-03007 for Xinchai 490B Engine
Products Photos


Products Parameters
|
Item |
Description |
|
Product Name |
Valve Spring Seat |
|
P/N |
490B-03007 |
|
Applied Model |
Xinchai 490B Diesel Engine |
|
Net Weight (kg) |
0.4 |
|
Gross Weight (kg) |
0.95 |
|
Qty per Carton |
8 Only / combination |
|
Carton Size (cm) |
10*10*10 |
Products Description
The Primary Function of the Valve Spring Seat:
The valve spring seat plays a critical role in ensuring that the valve closes accurately and tightly, preventing bounce during engine vibrations, thereby maintaining good sealing performance. Together with the lower seat, the seat applies the tension of the valve spring to the valve mechanism, ensuring airtightness between the valve and the valve seat.
Specifically, the functions of the valve spring seat include:
1. Preventing Spring Displacement and Wear:
The seat is designed to keep the spring stable, preventing displacement and wear, which ensures the reliable return of the valve.
2. Increasing the Natural Frequency of the Valve Spring:
By increasing the wire diameter, reducing the coil diameter, or employing dual valve springs, the stiffness of the valve spring is increased, enhancing its stability and reducing the likelihood of valve float at higher engine speeds.
3. Eliminating Gaps:
The pre-load applied during the installation of the valve spring overcomes the inertial forces encountered during valve closure, eliminating gaps between the components of the valve train and ensuring the precision and timing of valve movements.
4. Sealing Performance:
The seat, through its inner conical surface, forms a precise fit with the conical surface of the valve head, contributing to the sealing of the cylinder. It also bears the heat transferred from the valve, helping to maintain the stability of the engine's internal operations.
All our employees are determined to make their due contributions to the development of China and even the world 61500040014 HOWO Shaanxi Leo100693A Exhaust Valve Spring Lower Seat industry through their own efforts. Not proud, not complacent, we strive to do well. We are aware that the construction of corporate culture is a long-term systematic project, which should be promoted persistently and consistently.
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