Speical Steel Items

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Company is committed to the development of self-lubricating bearing technology for a long time, to provide customers with appropriate solutions. Main products: oil-free lubricated bearings, mold guide standard parts, punching mold wedge, inlaid solid sliding bearings, boundary lubricated bearings, water lubricated bearings and other full series of sliding bearings.Jiashan Ramshin Precision Machinery Co., Ltd. is located in the core area of changjiang River Delta city group in China, close to Shanghai, with obvious transportation advantages, which has laid a good foundation for export.

RAM-HT Spring Steel Rolling Bushing

The RAM-HT sleeve bushing is made of high quality 65Mn spring steel as the basic material. After pressing the spring steel plate, it is rolled with a high-strength forming mold. The inner part of the

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Why Choose Us

Production Market
Our products are exported to Germany, Japan, South Korea, Italy, Sweden, Russia, the United States, Spain, Thailand, the United Kingdom, Brazil, Argentina, etc.

Product Application
We Our products are used in Automobile stamping die, automobile transmission parts, brake system, truck boggie axle, construction machinery, construction machinery, agricultural machinery, fluid transmission, wind power generation, photovoltaic power generation, iron and steel metallurgy, industrial automation, food machinery, office equipment and so on.

After sales service
Quality confirmed in one month, if point any quality in one month, we will bear the lost the quality problems.

Durability
Our self-lubricating guide bushing is made from high-quality materials, which enhance their wear resistance and durability. As such, you can expect them to withstand extreme pressure and temperatures without suffering damage.

Types of RAM-HT Spring Steel Rolling Bushing

Steel spring bushings
These bushings come with a steel case, making them highly durable. They are ideal for heavy-duty applications like mining and construction equipment.

Bronze spring bushings
These bushings are made using bronze, which is a copper alloy. Bronze bushings have high corrosion resistance and are, therefore, ideal for applications in marine and chemical environments.

Graphite spring bushings
Graphite bushings combine graphite's properties, which offer self-lubricating features, with other materials like metal or plastic. The resultant bushings have self-lubricating properties, which eliminate the need for regular maintenance.

Plastic bushing
A plastic steel spring bushing is made from plastic, often nylon. It is lightweight and has high corrosion resistance. Plastic bushings have good wear resistance properties, making them suitable for various applications, including manufacturing processes and textile machinery.

Specification of RAM-HT Spring Steel Rolling Bushing

Performance Index	Data
Product Name	RAM-HT Spring Steel Rolling Bushing
Hardness	42~48HRC
Max dynamic Load	250N/mm²
Max Linear Velocity	0.1m/s
Max PV Value	1.5 N/mm².m/s
Working Temperature Limit	-100~+350ºC
Linear Expansion Coefficient	1.1×10-5/ºC

Application of RAM-HT Spring Steel Rolling Bushing

Automotive: Used in suspension systems of heavy-duty vehicles, such as trucks with trailers, to reduce friction and wear.

Industrial Machinery: Serve as guides and wear-resistant components in moving parts.

Hydraulic Cylinders: Facilitate smooth movement and reduce wear in hydraulic systems, aiding in braking and preventing sudden stops.

Construction Equipment: Provide durability and longevity in heavy-duty machinery such as loaders, piling machines, excavators, and their attachments, as well as cranes and aerial platforms.

Mining Equipment: Used in drilling machines, perforation equipment, and machinery for both underground and surface operations.

Agricultural Machinery: Employed in tractors and farming machinery, including specialized machines for olive cultivation and forestry.

Bearing Rings: Used in various applications requiring durable and wear-resistant components.

Hydraulic Pumps: Serve to protect the shaft of the pump in contact with the seal and also function to prevent oil leakage. Integral in ensuring smooth operation and longevity.

Lifting Machines: Provide essential support in various lifting applications.

Amusement Machines: Used in rides and other amusement equipment.

Viticulture and Olive Cultivation Machinery: Essential in specialized agricultural machinery.

Specialized Work Machines: Used in trenchless machines for asphalt, municipal machinery, railway machines, and more.

Technical details of RAM-HT Spring Steel Rolling Bushing

Hardness	HRC 42-48
MAx static load	650N/mm²
Max Dynamic load	100N/mm²
Max Speed	0.1m/s
Max. Temperature	200°C
Friction Coefficient (oil condition)	≤0.18

Structure

Structure	PTFE with lead/Cu/Fibre : 0.01-0.03mm
	Porous bronze : 0.2-0.3mm
	Steel backing : 0.7-2.3mm
	Tin-plating 0.005mm or copper plating 0.008mm

Packing & Shipping

Inner Packing
For small products: 100pcs-200pcs per sealed plastic bag.
For bigger products: 2pcs-10pcs per plastic film roller (depends on the product size)

Outer Packing&Shipment Packing
8pcs-300pcs per carton (depends on the product size)
18-24 cartons per wood case or pallet, shockproof and safe for transportation.

FAQ

Q: What are the advantages of bushings?

A: They have important functions such as reducing part wear, increasing service life, decreasing noise, and reducing power consumption, and are used in machinery, speed applications, automotive projects, and even aerospace.

Q: What is the advantage of providing a bush in a bearing?

A: Bearing bush are essential components used to reduce friction and support loads in various industrial applications. Their advantages, such as low friction, self-lubrication, and cost-effectiveness, make them an attractive choice for many engineers and designers.

Q: What is the difference between a bushing and a roller bearing?

A: The motion provided by bearings is generally smoother than bushings, overcoming static friction by rolling instead of sliding. They tend to be more precisely built with tighter tolerances for a better fit than bushings, reducing sloppiness and backlash.

Q: Is spring steel heat resistant?

A: During the processing of this alloy, the spring steel is cold-drawn into a wire and heat-treated to achieve excellent strength and resistance to high temperatures. Additionally, alloy steel springs like chrome silicon spring steel are excellent at resisting shock loading and cyclic fatigue failure.

Q: What is the temperature limit for spring steel?

A: Using stainless spring steels has ballooned in recent years. Several new compositions are now available to withstand corrosion. These materials can be used for high temperatures up to 650°F.

As one of the most professional speical steel items manufacturers and suppliers in China, we're featured by cheap products and good service. Please rest assured to wholesale good quality speical steel items from our factory. For custom service, contact us now.

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