The rolled bronze bushing, featuring diamond indents and constructed from CuSn8 and CuSn6.5P materials, is a precision-engineered component designed for optimal performance in metric sleeve applications. The unique combination of these high-quality bronze alloys offers exceptional wear resistance, corrosion resistance, and mechanical strength.

The diamond indents provide enhanced lubrication and wear reduction, ensuring smooth and efficient operation. These indents also improve the bushing's ability to retain lubrication, reducing the need for frequent re-lubrication and extending the bushing's lifespan.

The rolled bronze bushing's metric sleeve design ensures a precise fit within the application, minimizing clearance and maximizing performance. The CuSn8 and CuSn6.5P materials, known for their durability and reliability, are chosen specifically for their ability to withstand high loads and frequent motion.

Wh used in heavy machinery, motor vehicles, or other industrial applications, this rolled bronze bushing with diamond indents offers a robust and long-lasting solution for reducing friction and wear. Its precision manufacturing, high-quality materials, and lubrication-enhancing features ensure reliable and efficient performance in various metric sleeve applications.

Self-lubricating Bronze Bearing Diamond Indentations, Sliding Bearing, Plain Bearing, Bronze bushings-Chinese Manufacturer - Export Wrapped Bronze Bush Sleeve Bushing to the world.

BRONZE WRAPPED BEARINGS DIAMOND OIL HOES CUSN8 & C...

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Rolled Bronze bushings with Diamond Indents

Factory customized Copper wrapped bushings

VIIPLUS rolled (wrapped) bushings is produced with diamond-shaped lubrication indents on the bearing surface(s). These bushings are ideally suited for thin-wall applications. The indents provide lubricant reservoirs that allow for excellent and prolonged service.

For applications that are sealed or difficult to maintain, we also manufacture this product with self-lubricating graphite filled diamond or circular indents.

They are light-weight and compact and are available as sleeve bushings, flange bearings, washers and plates. They are produced in both inch and metric sizes.

• Metric Sleeves
• Metric Flanges

Bronze rolling bearing, with tin bronze alloy CuSn8/ cusn6.5p as the material, the surface of the rolling diamond oil hole, plays the role of oil storage, it has good fatigue strength and bearing capacity, corrosion resistance, wear resistance.
Widely used in agricultural machinery, construction machinery, construction machinery, and other high-load low-speed occasions.
(also called FB090)

bronze wrapped bushing flange size self-lubricatin...

Application Characteristics

1. Save a lot of copper material and time of copper sleeve manufacturing:
2. Lightweight and low cost compared with axle sleeve and rolling bearing made by vehicle;
3. Various oil grooves can be processed on the friction surface, and oil holes can store certain grease so that the time of oil filling is 5 times longer than that of a copper sleeve;
4. Extremely high bearing capacity, especially suitable for rough friction surface;
5. High heat dissipation, small expansion coefficient, stable service condition and long service life.

Technische Daten

• Wrapped bronze sliding bearing
• Low-maintenance
• With lubrication pockets

Properties

• High load capacity and stability at low abrasion, suited for rough operation, corrosion-resistant.

Materials

• CuSn8P

Lubrication Free with Excellent Wear Resistance

Material Properties

• Specific load capacity static≤ 120 [N/mm2]
• Specific load capacity dynamic≤ 40 [N/mm2] at max. 2.0 m/s
• Sliding speed≤ 2.0 [m/s]
• Friction value ***0.08 [µ] to 0.25 [µ] depending on lubrication
• Temperature strain– 100 [°C] to + 200 [°C]
• Max. PV-value2,8 [N/mm² x m/s]

Mechanical Behavior
Type	Tensile Strength	Elongation	Yield Strength
BRONZE BUSHING CUSN8 090	450	55	250
BRONZE BUSHING CUSN8 092	300	55	250
BRONZE BUSHING CUSN8 08G	420	5	230
BRONZE BUSHING CUSN8 09G	450	10	250
Physical Properties
Type	Specific Gravity	Linear Expansion	Heat Conductivity	Electric rate	Elastic Modulus
		0C10-6/0C	CW0/m.k	Cm/onm.mm2	KN/mm2
BRONZE BUSHING CUSN8 090	8.9	18.2	60	6.5	115
BRONZE BUSHING CUSN8 092	8.9	18.2	60	6.5	115
BRONZE BUSHING CUSN8 08G	7.8	22	70	7.8	108
BRONZE BUSHING CUSN8 09G	8	18.2	60	6.5	115
Friction Performance
Type	Max.Dynamic Load	Max.Speed (no, oil)	Max.Speed (oil)	Temp.
	(N/mm2)	(no oil)(m/s)	(oil )(m/s)
BRONZE BUSHING CUSN8 090	75	/	2.5	-80～+200
BRONZE BUSHING CUSN8 092	60	/	2.5	-100～+200
BRONZE BUSHING CUSN8 08G	65	0.4	4	-100～+260
BRONZE BUSHING CUSN8 09G	65	0.2	4	-100～+260
Bearing Hardness
Type	Item	Hardness
BRONZE BUSHING CUSN8 090	(Standard)	90～120
BRONZE BUSHING CUSN8 092	(Special)	125～155
BRONZE BUSHING CUSN8 08G	(Standard)	60～90
BRONZE BUSHING CUSN8 09G	(Standard)	90～120
BRONZE BUSHING CUSN8 B090	(Standard)	70～100
Bearing Material
Type	Item	Material	Composition %
			CU	SN	Pb	Zn	P	(Other)
BRONZE BUSHING CUSN8 090	(Standard)	CuSn6.5P		6～7	—	—	0.1～0.25	≤0.1
BRONZE BUSHING CUSN8 092			(Remainder)
	Ⅰ(SpecialⅠ)	CuSn8P		7～9	—	—	0.01～0.35	≤0.2
			(Remainder)
	Ⅱ(SpecialⅡ)	H68(CuZn31Si)	66～70	—	≤0.8		—	≤0.5
						(Remainder)
BRONZE BUSHING CUSN8 08G	(Standard)	CuSn10Pb10+Gr		9～11	9～11	—	—	≤0.5
			(Remainder)
BRONZE BUSHING CUSN8 09G	(Standard)	CuSn6.5P+Gr		6～7	—	—	0.1～0.25	≤0.1
			(Remainder)
	(Special)	CuSn8P+Gr		7～9	—	—	0.01～0.35	≤0.2
			(Remainder)
BRONZE BUSHING CUSN8 090 oil lubricating holes
Type	Thickness	Oil Depth
BRONZE BUSHING CUSN8 090	1mm	0.3～0.4mm
	1.5mm	0.4～0.5mm
	2mm	0.5～0.6mm
	2.5mm	0.6～0.7mm
BRONZE BUSHING CUSN8 09G	0.65mm	0.15～0.3mm
BRONZE BUSHING CUSN8 08G	1mm	0.3～0.4mm
	1.5mm	0.4～0.5mm
	2mm	0.4～0.5mm
	2.5mm	0.4～0.5mm

Tolerance Details

• Housing ØH7
• Bushing inner-Ø after mountingH9
• Shaft tolerancef7 to h8

Maintenance

it is a low-maintenance bronze sliding bearing. Primary lubrication is necessary. Oil or grease lubrication is possible. Due to lubrication pockets, clearances are reduced to a minimum.

Range Of Application

• Hydraulic Systems: Bushing for Valves and Rotary Actuator, Bushing for Gear Pumps, Bushing for Cylinders, Bushings for Shock absorber, Bushing for Lucas Hydraulic Pump,
• Food Processing: Bottling Machine, Bottle Washer, Automatic Bag Maker, Dairy Processors, Meat Choppers, Mixers
• Automobiles: Suspension Bushings, Steering, Brake Bushings, Clutch, Transmission Bushings
• Railroad Cars: Side Thrust absorber, Automatic Doors Bushings
• Ships: Steering Linkages, Hatch Covers, Pulley Blocks Bushings
• Aircraft: Control Linkage, Shock absorber bushings, Actuator Valves bushings, winches
• Printing: Offset Printer, Gravure Printer, Mail Printer, Automatic Ticket Bender, AutomaticBook Binder
• Textile Industry: Spinning frame, Yarn Twister, Sheet Roller, Winders

Caption

Special dimensions are available on request

About 85%of our products are export to North American, European Union, South East Asia countries.

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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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