SPF Bushings Graphite CuZn25Al5 Brass Bushing bronze case with graphite nests Bronze Bushing Saves You Time & Money In Research, Design & Production Costs. E-mail Now! Wide Variety & Selection. Oilless Bushing & Bearings. Expert Customer Service.

SPF Bushings, made from Graphite CuZn25Al5 Brass Alloy, are precision-engineered components designed to offer exceptional wear resistance and self-lubricating properties. The unique combination of graphite, copper, zinc, and aluminum in the alloy creates a highly durable and low-friction surface, ensuring smooth and efficient operation in various industrial applications.

The self-lubricating nature of these bushings eliminates the need for regular lubrication, significantly reducing maintenance requirements and operational costs. The graphite content acts as a natural lubricant, providing a constant lubricating film that reduces friction and wear.

The CuZn25Al5 Brass Alloy material is chosen for its excellent corrosion resistance and mechanical properties, ensuring a long service life even in harsh environments. The bushings' precision manufacturing guarantees a perfect fit and optimal performance in high-wear applications.

Wh used in machinery, equipment, or vehicles, SPF Bushings Graphite CuZn25Al5 Brass Alloy provide a reliable and cost-effective solution for maintaining smooth and efficient operation. They are an ideal choice for industrial applications that require high wear resistance and self-lubricating properties.

Oilless Bushing & Bearings - Graphite CuZn25Al5 Brass Bushing
Oilless Bushing & Bearings - Bronze Case with Graphite Nests
Oilless Bushing & Bearings - Bronze Bushing Saves Time & Money
Oilless Bushing & Bearings - Wide Variety & Selection
Oilless Bushing & Bearings - Expert Customer Service

SPF-0610
SPF-0612
SPF-0810
SPF-0812
SPF-0815
SPF-10080
SPF-100100
SPF-1010
SPF-1012
SPF-1015
SPF-1017
SPF-1020
SPF-12080
SPF-120100
SPF-1210
SPF-1212
SPF-1215
SPF-1220
SPF-1225
SPF-1230
SPF-13080
SPF-130100
SPF-1310
SPF-1312
SPF-1315
SPF-1320
SPF-1325
SPF-1330
SPF-14080
SPF-140100
SPF-1415
SPF-1420
SPF-1425
SPF-150100
SPF-150120
SPF-1510
SPF-1512
SPF-1515
SPF-1520
SPF-1525
SPF-1530
SPF-160100
SPF-160120
SPF-1612
SPF-1615
SPF-1618
SPF-1620
SPF-1623
SPF-1625
SPF-1630
SPF-1635
SPF-1640
SPF-1815
SPF-1820
SPF-1825
SPF-1830
SPF-1835
SPF-1840
SPF-2015
SPF-2020

Centrifugally cast, custom machined bronze bushings, washers, wear plates. Lead-free. Bushing Type: Bronze Bushings, Bronze Plate

Cast Bronze C93200 Sleeve (Plain) Bearings Online Sale

Standard Graphite Plugged Bronze Sleeve Bushing

The standard graphite plugged bronze sleeve bushing is to open cavities of appropriate size and orderly arrangement on the metal friction surface of the bearing matrix, and then embed a molded solid lubricant with unique self-lubricating properties in the cavities (the solid lubricant area is generally 25% of the friction area -35%) and made of self-lubricating bearings.

The base body of the standard graphite plugged bronze sleeve bushing should be determined according to the working conditions of the bearing itself. The more commonly used materials are high-strength brass, tin bronze, castings and so on. There are two main types of embedded solid lubricating materials, one is natural black lead, artificial graphite, and MoS2 synthesis, and the other is synthesized with as the matrix. According to the bearing's own operating conditions, the combination of different metal substrates and embedded solid lubricants can ensure that the product can meet the special needs of various temperature, load, motion and media operating conditions, while ensuring stable and reliable operation.

1. No need for oil supply device, oil injection hole, oil groove processing

2. Reduction of operating costs

3. Design time reduction

4. Lubricant recycling and environmental protection

Self Lubricating Bushings, Oilless Bush Supplier From China

We are a leading manufacturer and supplier of Oilless Bushing and our product is composed of good quality.

The oilless bushing, integrated into solid lubricants without oil, is a new type of solid copper alloy, which is homogeneously integrated with a solid lubricant in its body.

It breaks the limit of the general bearing, the lubrication of which depends on the oil film.

So it is suitable for high temperatures, heavy use, corrosion protection, or when oil is difficult to import.

Its performance doubles on both hardness and wear-friction.

Now it is widely applied in successive casting machines, steel rollers in metallography, mineral machines, ships, steam turbines, hydraulic turbines, and plastic injection molding machines.

JDB bronze graphite bush (oilless) sleeve bushing 50 x 62 x 50 mm long

Oilless Flange Sleeve Bearing Bushing, JDB material is made of strong cast bronze based metal with special solid lubricants embedded. The base metal with stands high load and the solid lubricants provide for self-lubrication. Oilless Flange Sleeve Bearing Bushing shows excellent performance without pre-lubrication under conditions of extreme high/lower temperature with low speed. This material provides a maintenance-free bearing solution, particularly for high load, intermittent of oscillating motion.

Oilless Flange Sleeve Bearing Bushing can be applied under dry, high temperature, high pressure, corrosive, water or other chemical environments when no oil can be introduced.

Oilless Flange Sleeve Bearing Bushing is widely be used in automotive product line, water engineering, dam gate, plastic industries, successive casting machines, steel rollers in metallurgy industry, mineral machines, ship turbo generators, hydraulic turbines and injection molding machines.

Oilless Bushing - Select, configure, order. Viiplus delivers punctually and offers fair prices.

Our oilless bushings are the perfect solution for projects where lubrication cannot easily be provided or where conventional lubricants may carbonise.

Contact Us - Oilless Bushing Supplier
To make an inquiry about or request for a catalog of oilless bushings bearings, contact today!

(Bronze with graphite embedded)

Oilless Bushing Defined (What is oilless bushing?)

A oilless bushing, or more commonly sliding bearing and slide bearing, is the simplest type of bearing, comprising just a bearing surface and no rolling elements.

Oilless bushing can refer to ball bearings or just "rings" that do not require periodic lubrication - because a lubricant such as powdered graphite is incorporated into the material the bearing is made of. These are also known as Embedded Graphite Bronze Bushes and have 20-25% graphite inserts on the walls / surface which provide lubrication at all times which also reduces the coefficient of friction.

These oilless bushings are suitable for dry environments where contamination is a risk, wet applications where there is high humidity and applications where the bearing is in an inaccessible location.

Oilless Bushing, Maintenance-free Sleeve Bushing

We are leading manufacturer and supplier of Oilless Bushing and our product is made up of good quality.

The oilless bronze bushing is a new type made of a strong copper alloy and is embedded uniformly in its solid lubricant housing.

Oilless Bushes are suitable for high temperatures, heavy loads, corrosion or places where oil is difficult to introduce.

Specify Part No. by required I.D., O.D., and Length. (e.g.) I.D. is 50mm, O.D. is 62mm, and length is 50mm.

-Oilless Bronze Bushings - Copper Alloy Straight, Standard

Oilless Bushings Materials

Material: High Tensile Brass Alloy
Solid Lubricant Embedded

Oilless Bushings Feature

●Oilless bushing serviceable without the need for lubrication.

●Oilless bushing Demonstrates high performance under high-load and low-speed operations.

●Oilless bushing Demonstrates superior wear resistance in applications where oil film is seldom produced such as reciprocating motions, oscillation, frequent starts, and stops, etc.

●Oilless bushing has superior chemical resistance and corrosion resistance.

●Standard Oilless bushings products are available in various sizes.

Oilless Bushings Technical Data

Please check the type/dimensions/specifications in the Oil-Free Bushings - Graphite Bronze Bushing Products - Copper Alloy Straight, Standard series.

Oilless Bushing Specification

Straight Oilless Bushings Service

*The values in parentheses are static bearing pressures, which are the bearing pressures in applications with no motion or very small
motion (≦0.0017m/s[0.1m/min]).

Oilless Bushing Machining Accuracy

Classes here are in the JIS standard. This product demonstrates satisfactory performance at the slide surface roughness of Rz6.3 to 12.5μm.

Oilless Bushing (Bushing Inner Diameter 50mm) Size Model

Oilless Bushing Size Tolerance

●Applicable to the rotation, oscillation, and reciprocating motion.
●Do not use this underwater.
●63mm I.D bushing can be used as an intermediate trunnion
bushing for hydraulic cylinders.

Graphite plugged bronze sleeve JDB1/2/3/4/5

Alloy materials

Material alloy chemical composition

Technical Parameters

Metric sized oilless bronze bushing

Oilless Bushing Size Sheet

*The I.D. tolerance after press fitting is for reference only.

(e.g.) I.D. is 50mm, O.D. is 62mm, and length is 50mm.

*The dimensional tolerances are the values measured at +25℃.

Oilless Bushing Avalibility

Metric oilless bushing and imperial oilless bronze bushing made to order: standard bushing forms in special dimensions, half-bushings, special shapes obtained by stamping or deep drawing, customized bushing designs

Oilless Bushing Typical Application

The product is widely used in continuous casting rolling machine, mining machinery, shipping machinery, turbine, injection machinery, auto mould
and so on.

1. Oilless bush use for high load low speed and self-lub. like dam gate and water gate bushes, hydraulic turbine bushes etc.
2. Oilless bushing use for high temp. such as iron and steel factory machines and so on.
3. Oilless graphite bronze bushing use for Automobile production, like assembly lines, press lines, conveyor lines and so on.
4. Oilless bronze bushing use for heavy duty machineries like steel rolling mills, injection machines, press dies etc.
5. Oilless bushes also use for chemical machines, food processing machines, paper mills, textile machines etc.

Oilless Bushing Used In Injection Molding Machine

● Oilless bushes for toggle link

Oilless Bushings Application For Moulding

-Injection Moulding

1. Guide Bushes

2. Ejector Guide Bushes

3. Guide Rail

4. Guide Block

5. Lower Plate

6. Guide Bushes

7. Formwork Bushes

-Cam Flange Die

1. Wear Plate

2. Cam Stroke Plate

3. Cam Upper Plate

4. Cam Side Block

5. Cam Side Plate

6. Cam Positive Return Plate

7. Guide Post Bushes

8. Cam Stroke Plate

Viiplus Oilless Bronze Bushing Used In Many Application

Whatever the bronze oilless bushing material & specification, whatever the oilless bush standard shape or size, if it's physically possible, we can make it.

Viiplus is one of the most experienced oilless bushing suppliers, if you want to download the oilless bush catalogue, Contact Us Now!

Beyond Grease: A Deep Dive into Oilless Bushings & Why Viiplus Leads the Way

Friction is the enemy of efficiency. In countless machines, from massive industrial equipment to intricate automotive components, the constant battle against wear and tear dictates performance, longevity, and maintenance costs. Traditionally, grease and oil have been the go-to solutions, but they come with their own set of challenges: frequent re-lubrication, potential contamination, environmental concerns, and limitations in extreme conditions.

Enter the world of oilless bushings, also known as self-lubricating bearings or sliding bearings. These innovative components offer a smarter way to manage friction, delivering reliable movement without the need for external lubrication.

At Viiplus (www.viiplus.com), we don't just supply these components; we engineer solutions. Leveraging deep expertise in metallurgy and tribology (the science of friction, wear, and lubrication), we've become a leading name in sliding bearing technology. But what exactly are oilless bushings, and why should they be on your radar? Let's dive deeper.

What Exactly Are Oilless Bushings? The Science of Self-Lubrication

Unlike traditional ball or roller bearings that rely on rolling elements and require constant lubrication films, oilless bushings operate on the principle of sliding motion. Their "magic" lies in their material composition and structure, designed to provide their own lubrication at the bearing surface. This can be achieved through several key technologies:

1. Solid Lubricants Embedded: Materials like graphite, MoS₂, or PTFE are embedded directly into the metallic matrix (often bronze) of the bushing. As the shaft rotates or slides, a minuscule amount of this solid lubricant is transferred to the mating surface, creating a low-friction film.

2. Porous Metal Structures: Sintered bronze or iron materials are created with microscopic pores. These pores are vacuum-impregnated with oil during manufacturing. In operation, slight heating causes the oil to expand and seep onto the bearing surface, providing lubrication. When it cools, the capillary action draws the oil back in, creating a closed-loop system.

3. Layered Composites: These often feature a strong backing (like steel), an intermediate sintered layer (like bronze), and a low-friction overlay (often PTFE-based). The PTFE layer provides the primary sliding surface, offering extremely low friction.

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Contrasting Logic: Oilless vs. Traditionally Lubricated Bearings

The Tangible Benefits: Why Make the Switch?

Choosing oilless bushings isn't just about eliminating grease guns. It's about unlocking significant operational advantages:

• Drastically Reduced Maintenance: This is the most obvious benefit. No re-greasing means less labor, less scheduled downtime, and simplified maintenance protocols. Imagine the savings across a factory floor!

• Enhanced Reliability: Lubricant starvation is a major cause of bearing failure. Self-lubricating bearings ensure consistent lubrication, leading to predictable performance and longer service life, especially in hard-to-reach locations.

• Superior Performance in Harsh Conditions: Oilless bushings excel where traditional lubricants fail:

  • High Temperatures: Certain types can operate at temperatures far exceeding the limits of conventional greases.

  • Low Temperatures: No grease means no stiffening or freezing issues.

  • Contaminated Environments: The absence of sticky grease reduces the ingress of dirt, dust, and debris.

  • Vacuum or Underwater: Ideal for applications where liquid lubricants are impractical or impossible.

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• Cost Savings (Total Cost of Ownership): While the initial purchase price might sometimes be higher, the TCO is often significantly lower due to savings on lubricants, labor, downtime, and potential component failure replacement.

• Environmental Friendliness: Eliminating oil and grease leakage prevents contamination of products, machinery, and the environment. Crucial for industries like food processing, pharmaceuticals, and textiles.

• Compact & Simplified Designs: Without the need for lubrication systems (nipples, lines, reservoirs), machine designs can be more compact and streamlined.

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Exploring Viiplus's Portfolio: Finding Your Solution

Viiplus offers a comprehensive range of self-lubricating bearings designed to meet diverse application needs. Understanding the different series helps in selection:

• JDB Series (Graphite Plugged Bronze): Excellent for high-load, low-speed applications, intermittent motion, and high temperatures. The graphite plugs provide continuous solid lubrication. Ideal for heavy machinery, molds, and hydraulic components.

• SF Series (PTFE-Based Composite): Typically metal-backed (SF-1: steel, SF-2: steel/bronze) with a PTFE-based lining. Offers very low friction, good wear resistance, and suitability for dry running or marginal lubrication. Common in automotive, office equipment, and hydraulics.

• JF Series (Bimetal Bushings): Combines a steel backing with a sintered bronze or lead-bronze lining. Good load capacity and fatigue strength. Often used with grease or oil but can operate marginally lubricated. Found in engines, chassis parts, and agricultural machinery.

• FB Series (Wrapped Bronze): Often made from bronze strip, sometimes with lubrication pockets or through-holes. A cost-effective solution for medium loads and speeds, typically requiring initial greasing but offering extended re-lubrication intervals.

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Quick Comparison Chart (General Guide):

(Note: This is a simplified guide. Always consult specific product data sheets or Viiplus experts for precise application requirements.)

Uncertain which material or type suits your project? Our Bushing Material Selection Guide is designed to help, or Contact Us for a Free Quote and Expert Advice.

Why Partner with Viiplus? Expertise Meets Quality

Choosing the right supplier is as critical as choosing the right bushing. Here’s why companies worldwide trust Viiplus:

• Deep Expertise: Our foundation in metallurgy and tribology, coupled with a talented R&D team, means we understand the science behind reliable movement. We don't just sell; we solve friction challenges.

• Uncompromising Quality: We employ advanced manufacturing techniques (including sand casting, centrifugal casting, metal casting, investment casting) and a rigorous quality management system, ensuring every bushing meets the highest standards.

• Comprehensive Range: From standard metric sizes in JDB, SF, JF, and FB series to custom solutions including cylindrical, flange, double flange bushings, wear plates, and guide rails – we have the portfolio to match your needs.

• Global Reach, Seamless Logistics: Based in China, we ship sliding bearings worldwide. Our professional team handles customs clearance efficiently, ensuring smooth, timely delivery with all necessary documentation.

• Customer-Centric Approach: We believe in ethical practices and building trust. We offer flexible production (single units to large series), competitive pricing, and  online support.

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