Your Professional Auto Copper Parts Supplier
Established in 2004, plant area 45000㎡, 2019 turnover is 220 million CNY. Zycalloy is committed to the development of copper alloy materials to meet the needs of industrial progress of special copper alloy.The types include complex brass, aluminum bronze, tin bronze, tin-lead bronze, silicon brass,manganese brass, and lead free copper. In the domestic copper alloy industry our materials stand in a leading position.Also supply the service of developing the copper alloy material according to the special requirements of customers.
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Cooper BushingWidely used in a variety of light industry, large, heavy machinery, copper bushing is an important component of the machinery. The advantages of copper bushings are reflected in the high hardness,...read more
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Valve Guide PipeValve guide is the guiding device for the valve of automobile engine, the valve guide is to guide the valve and make the heat on the valve stem to be transferred to the cylinder head through the...read more
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Cooper Thrust BearingIn the structure of automotive turbocharger, copper thrust bearing is very important, it not only directly affects the reliability and service life of the supercharger structure, but also the...read more
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Floating BearingFloating bearings are key moving parts of the turbocharger, and their structure is related to the reliability and durability of the turbocharger's operation. Floating bearings are commonly made of...read more
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Compressor Swash PlateCompressor swash plate is an important component in the automotive air conditioning system, using the rotary movement of the swash plate to compress the refrigerant, so as to achieve the cooling...read more
Why Choose Us
Quality Control
Zycalloy strictly carry out the ISO9001 and IATF16949 standards for the operation and management.
R&D Capability
In recent years, the company has researched and developed a total of 21 new products and processes, including 9 government projects, which have won the third prize of scientific and technological achievements, and 21 patents on leading products, one of which is a patent for invention. The company also carries out targeted R&D work every year according to product positioning and customers' needs.
Industry Status
Zycalloy has become the most reliable copper alloy material supplier for many European and American companies in mainland China. In some projects, it has also developed new copper alloys with European and American customers to meet more stringent application and environmental standards.
High Quality
Our products are manufactured or executed to very high standards, using the finest materials and manufacturing processes.
Auto Copper Parts
Types of Valve Guide Pipe

01
Bronze Valve Guides
Bronze valve guides have been used for a long time, and many engine designs still use them. A common alloy for bronze guides is a mix of copper, tin, and phosphorous called SAE 660. This material offers good wear resistance and helps lubricate the valve stems.

02
Bimetallic Valve Guides
Bimetallic valve guides have a steel outer part and a bronze inner part. The outer steel section gives extra strength and stops the guide from bending or breaking, while the inner bronze section still allows for good lubrication.

03
Plastic Valve Guides
Some modern engines, especially smaller and more fuel-efficient ones, use plastic valve guides. These guides are made of a special long-lasting nylon material designed to handle the heat of valve motion.

04
Tungsten Carbide Valve Guides
Tungsten carbide is a super-tough material that can withstand a lot of stress without wearing out. Some high-performance or heavy-duty engines may use tungsten carbide valve guides since they are likely to last a long time under extremely demanding conditions.
Functions of Valve Guide
Valve guide maintains precise alignment of the valve, positioning the valve head accurately with the valve seat for a tight seal.
By keeping the valve stem centered, the valve guide creates a consistent, low-friction interface, reducing metal-on-metal contact and increasing the durability of both valves and the guides.
During the combustion process, the valves reach extremely high temperatures. The valve guides transfer some of the heat from the valve stem to the cylinder head, helping to prevent the valves from overheating or deforming.
Characteristics of Floating Bearing
Material
Typically crafted from leaded bronze or aluminum, these materials are chosen for their strength, endurance, and ability to tolerate high temperatures.
Design
These bearings feature a unique construction with two bushes, positioned at each end of the bearing housing, allowing the shaft to pass through. This design permits the bushes to rotate within their housing, effectively creating a ‘bearing within a bearing’ scenario.
Clearances
Engineered with precise inner and outer clearances between the shaft, bearing, and housing, these specifications are crucial for enhancing the bearing’s load-carrying capacity and introducing damping to the system.
Lubrication
Essential for the longevity and functionality of the bearings, oil flow between the bearing and its housing is maintained to avert metal-on-metal contact and to incorporate damping features for better performance.
Specifications
Material
Valve guides can be made from different materials, each with its own features and advantages. The most common options are cast iron, which is a type of iron that contains carbon, and various types of alloys, such as copper-nickel, bronze, or beryllium-bronze alloys.
Inner diameter
The inner diameter of the guide must match the diameter of the valve stem to ensure proper fit and function. Valve guides generally have an up-to-0.5-inch inner diameter. In particular, semi-finished products of cast iron may have an inner diameter of 7/16".
Length
The length of the valve guide affects the support it gives to the valve stem. Longer guides may provide better alignment but can increase wear. Valve guides typically range from 0.5 to 2 inches in length.
Coating
Some valve guides have special coatings to improve their performance or longevity. For instance, manganese phosphate may be used to enhance wear resistance or reduce friction, while chrome plating can provide a smoother surface for the valve stem to glide on.
Specification of Floating Bearing
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Item |
Value |
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Type |
Pillow Block |
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Applicable Industries |
Hotels, Garment Shops, Building Material Shops, Manufacturing Plant, Machinery Repair Shops, Food & Beverage Factory, Farms, Restaurant, Home Use, Retail, Food Shop, Printing Shops, Construction works , Energy & Mining, Food & Beverage Shops, Advertising Company |
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Brand Name |
LZC |
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Model Number |
BF |
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Place of Origin |
China |
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Guangdong |
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Precision Rating |
P6 |
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Size |
0.68kg-2.12kg |
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Type |
Pillow Block |
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System |
Linear Motion System |
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Precision Rating |
C7 |
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Core Component |
Bearing |
Technical Specification
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Particulars |
Specification |
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Bore |
4 - 20(Mm) |
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Outer Diameter |
8 - 30(Mm) |
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Length |
25 - 200(Mm) |
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Brand |
AECO, ARROW |
Usage scenarios of Valve Guide Pipe
Aerospace: The aerospace industry extensively employs high-performance valve guides in aerospace vehicles' engines, turboprop, and aircraft.
Power Generation: Power plants, such as those that produce hydroelectric power, rely on water turbine generators that extensively use valve guides. Valve guides used in power generation have to guarantee uninterrupted and smooth power delivery.
Marine: The marine industry also uses valve guides in ships and other sea vessels. Ships mainly use high-strength steel or titanium alloy valve guides due to their corrosion resistance properties.
Heavy Machinery: Heavy machinery, like those used in the mining industry, utilizes durable polyurethane valve guides. Mining industries require heavy machinery that can withstand wear and tear from frequent use.
Motorcycle Manufacturing: Motorcycle manufacturing companies need valve guides for their engines. They look for valve guide suppliers that can meet their required MOQ.
Packaging & Shipping

FAQ
We're professional auto copper parts manufacturers and suppliers in China, specialized in providing high quality OEM service. We warmly welcome you to buy customized auto copper parts from our factory.
Compressor Swash Plate, Valve Guide Pipe, Cooper Thrust Bearing-
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