Nov. 04, 2024
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In the world of machine shops, precise and reliable machine tools are essential to ensure high-quality repairs.
Engine valve grinding is an important process that requires extremely accurate and powerful equipment.
When purchasing a valve grinding machine, the rebuilder must carefully consider a number of extremely important parameters, such as
This decision-making phase is critical to the modern engine rebuilder&#;s ability to make the best choice and purchase the valve grinder that best meets their operational needs.
Therefore, The Ultimate Tooling presents the most authoritative and accurate buying guide to date, comparing the best valve grinders on the automotive repair market.
In this guide, we will review and compare four of the best engine valve grinders available today:
We will review their features, strengths and available options to help the operator select the valve grinder that best meets the needs of his shop.
Valve grinding is a key process in maintaining optimal engine performance. This process restores the valve surface, ensuring a perfect seal in the combustion chamber and improving engine efficiency.
A well-ground valve reduces the risk of compression loss, minimizes fuel consumption and extends engine life. In a machine shop, having quality valve grinding equipment is essential to ensure accurate and reliable operations while maintaining high service standards.
The purpose of this technical guide is to provide a detailed and comparative overview of the best valve grinders available on the market. We will analyze four top models: the Comec RV516, Kwik-Way SVS II Deluxe, PEG RV and PEG RV .
Each section of the article will provide a general description, examine the technical specifications, and review the optional equipment and accessories available for each machine.
The goal is to help professionals make an informed choice by identifying the valve grinder that best meets their specific operational needs, thereby improving the efficiency and quality of their work.
Additionally, a handy table compares the various technical data of each model, allowing the reader to easily compare the main specifications of each machine, providing a clear and immediate view of their features and potential applications.
The Comec RV516 represents excellence in the field of valve grinding machines, specifically designed to meet the needs of the most demanding machine shops. This model is known for its sturdy construction and its ability to work on a wide range of engine valves, making it a versatile choice for a large variety of jobs.
The RV516 is an advanced valve grinder that uses a centerless system to ensure perfect concentricity between the valve head and stem. This feature eliminates the need to change collets or spindles, making the valve grinding process more efficient and accurate.
In addition to the centerless system, the Comec RV516 is equipped with a grinding wheel dressing device with micrometer adjustment to ensure optimum grinding wheel roughness at all times.
The valve rolling system is realized by three motorized rollers, the top of which is inclined to automatically pull the valve to an adjustable limit switch, ensuring a uniform valve length without the need of any manual adjustment.
The machine is also equipped with a coolant system, complete with removable pump and settling tank, which helps keep temperatures under control during the grinding process, preventing thermal deformation and improving finish quality.
The Comec RV516 offers a wide range of equipment and accessories to increase its performance and to adapt it to the different needs of machine shops.
The standard equipment includes a grinding wheel, a grinding wheel dressing device, a diamond dresser, a coolant system with pump and settling tank, one liter of emulsifiable oil and service wrenches. These items ensure that the machine is ready to work efficiently and accurately right from the first day of use.
To further enhance the performance of the Comec RV516, several optional extras and accessories are available. These include a rocker arm grinding device, a valve clamping collet for valves with a stem diameter of 3-4-5 mm, a Ø 215×35×76 mm grinding wheel, a Ø 100 mm secondary grinding wheel and a diamond dresser.
It is also possible to equip the machine with a halogen lamp for better lighting and a sheet metal base for greater stability.
The RV516 is also available in the version RV516.ASM, equipped with a secondary grinding wheel for end facing and chamfering stems.
The Kwik-Way SVS II Deluxe is a high-end valve grinder, extremely popular among the most demanding professionals in the industry for its solid construction and reliable performance. Manufactured in the United States, this model is designed to provide superior precision and performance when grinding engine valves.
The Kwik-Way SVS II Deluxe is renowned for its ruggedness and ability to work on a wide variety of valve sizes. With a cast iron body, this machine is designed to effectively absorb vibration, ensuring stability and precision machining.
The wheel holder head slides on ground dovetail guides that provide wide travel and make it easy to machine very long valves, up to 385 mm.
This rugged and precise design makes the Kwik-Way SVS II Deluxe an ideal choice for shops that require high precision and accurate machining.
The Kwik-Way SVS II Deluxe is equipped with a pneumatic system that allows valves to be locked and unlocked quickly, increasing operating efficiency and reducing setup time.
The machine features a variable spindle speed that can be easily adjusted to suit different materials and valve sizes, and is equipped with a cooling system with a 3.8 liter capacity tank.
Standard equipment on the Kwik-Way SVS II Deluxe includes a 5&#; (178 mm) main grinding wheel, a 5&#; (76 mm) secondary grinding wheel, a spindle assembly device, a grinding wheel sharpening device, a balancing wheel sharpening device, a splash guard, and various accessories for machine maintenance and operation.
Among the available options we can find the standard Ø 4÷14 mm chuck, the increased diameter Ø 11÷21 mm valve chuck and the high performance Ø 4÷14 mm chuck. An adapter for small diameter valves Ø 3÷6 mm is also available.
Various grinding wheels with different grits are also available for standard machining and stem finishing.
In addition, the diamond dressing system for the secondary grinding wheel, grinding fluid in 3.8-liter and 19-liter sizes, and a sheet metal cabinet can be added.
For more information, please visit Valve Facing Machine.
The PEG RV is a valve grinder that combines versatility and innovation, making it an excellent choice for machine shops that require precision and ease of use.
This model is designed to handle a wide range of applications, from small to large valves, in a simple and effective manner.
The PEG RV features the ability to machine valves with stem diameters ranging from 4 to 16 mm and valve heads up to 100 mm in diameter.
The machine is designed for reliable performance and long life, thanks to the high quality materials used in its construction, such as steel for the main structure and aluminum for the moving parts.
Its compactness makes it suitable even for workshops with limited space, without compromising the quality of the work.
The PEG RV comes standard with a grinding wheel, a wheel dressing device, a diamond dresser, and a built-in coolant system with a 5-liter tank.
Standard accessories also include a variety of service wrenches, a valve stop system, an adjustable light and a low voltage control panel.
Several options and accessories are available to complete the valve grinder. These include a modular sheet metal base, variable speed grinding wheel rotation, a rocker arm grinding device, and grinding wheels of various grits and materials for different types of valves.
For greater versatility and precision in grinding operations, a diamond dresser for the grinding wheel and a valve drive wheel can also be added.
The PEG RV is a high-end valve refacer designed specifically for machining large engine valves up to Ø 200 mm.
It is ideal for workshops working on large engines, such as those in the marine or railway industries, where high precision and accuracy equipment is required.
The PEG RV is designed to provide stability and reduced vibration to improve the quality of work when grinding large valves. It is built with a solid construction using high quality materials such as cast iron for the base and aluminum for the moving parts ensuring durability and maximum strength even during heavy use.
The PEG RV comes standard with a high precision self-centering chuck, a standard grinding wheel, a grinding wheel dressing device, a diamond dresser and a built-in coolant system.
The machine is also equipped with a variable speed drive for grinding wheel and valve rotation, a variety of service wrenches, an open-end wrench, a valve stop system, an adjustable light and a low voltage control panel.
Various options and accessories are available to complete the PEG RV . It includes a composable sheet metal base, a rocker arm grinder, and a variety of grit and material grinding wheels to process different types of valves.
A diamond dresser for the grinding wheel and a valve drive wheel can also be added to enhance the versatility and precision of the grinding process.
To help you choose the best valve grinding machine, we have created a comparison table that summarizes the main technical specifications of the models analyzed. This table allows you to quickly compare the main features of each machine, giving you a clear and immediate overview of their capabilities and possible applications.
DATARV516KWIK-WAY SVS IIRV RV U.M.Min.- Max. valve stem diameterØ 4÷16Ø 4÷14Ø 4÷16Ø 15÷40mmMin.- Max. valve stem length55÷÷÷÷180mmMin.- Max. head valve diameterØ 12÷114Ø 101Ø 13÷100Ø 15÷200mmMin.- Max. valve angle0÷60°13÷62°20÷60°20÷60°°Grinding wheel rotation speedRpmMain grinding wheel diameterØ 215Ø 178Ø 175Ø 175mmSecondary grinding wheel diameterØ 100Ø 76//mmValve rotation speed÷÷50RpmGrinding wheel motor power0,550,370,370,37kWSpindle motor power0,,060,050,1kWPneumatic requirements/4,5//BarElectrical requirements400 &#; 50 &#; 3 230 &#; 50 &#; &#; 50 &#; &#; 50 &#; &#; 50 &#; 1V &#; Hz &#; PhDimensions70×60××60××60××62×55cmWeightKgThe main differences between the models are their processing capabilities and the technologies used.
The comparison table and specification evaluation help identify the valve grinder best suited to the specific needs of each workshop, improving the efficiency and quality of the work performed.
Having provided this broad overview, the reader now has an important set of benchmark data to guide him in selecting the right valve grinding machine for his specific needs and capable of delivering the required performance.
Below, we offer some practical advice to further assist the modern engine rebuilder in selecting the best valve grinder for his workshop.
When considering the purchase of a valve grinding machine or other machine tool, it is important to consider several key factors:
The specific needs of your workshop will determine which model of valve grinding machine is best suited. Here are some recommendations based on different operating situations:
By carefully considering these factors and the specific needs of your shop, you can select the engine valve refacer that will best meet your needs and ensure efficient, high-quality work.
Choosing the right engine valve grinder for your shop&#;s needs is critical to ensuring efficiency and precision in grinding operations. Each model analyzed offers specific advantages and unique features to meet the needs of each engine rebuilder.
Our technical guide has compared the key features of the best valve grinders available on the market, providing a comprehensive overview of their capabilities to help the reader make a choice during the purchasing process.
For more information, contact The Ultimate Tooling using the appropriate button below. Our team of experts is here to help you select the valve grinder that best meets your needs and ensures your shop operates at its full potential.
And don&#;t forget to share this article on various social networks to help your colleagues find out which valve refacing machine best suits their needs.
The Valve Grinder's spring-loaded vacuum pump securely holds valves during checking and lapping operations.
The Valve Grinder is the ideal tool for lapping burned valves as it provides firm but flexible hold. The grease-resistant handle is designed to spin easily between your hands, while the pad is moulded from durable tread rubber providing flexibility without loss of grip. The suction pad can be attached to a valve with a single plunger stroke with the handle in-built spring-loaded vacuum pump. 19mm and 32mm suction pads supplied for use with most engine and automotive valves.
Key features:
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