The RG7 Bronze Sleeve Bushings, crafted from leaded gunmetal (CC493K CuSn7Zn4Pb7), are precision-made machine parts designed for exceptional performance and durability.

The unique composition of this bronze alloy, which includes copper, tin, zinc, and lead, offers superior wear resistance and corrosion protection, ensuring long-term reliability in various industrial applications. The bushings' sleeve design provides a secure and stable fit, minimizing friction and maximizing efficiency.

RG7 Bronze Sleeve Bushings are widely used in machinery, equipment, and other industrial systems where precision and durability are paramount. Wh used in rotating shafts, bearings, or other critical components, these bushings ensure smooth operation and extended service life.

Manufactured to meet strict quality standards, these machine parts are guaranteed to provide consistent performance and reliability. With their exceptional material properties and precision engineering, RG7 Bronze Sleeve Bushings are an ideal choice for demanding industrial applications.

Bronze Sleeve Bushings Gun Metal Bronze Bearing Price. Other cast bronze bushing dimensions on request. All rg7 bronze bushings with a bore diameter> 14 mm incorporate an axial lubrication groove! Get your groove type!

Gun metal, also known as red brass in the United States, is a type of bronze – an alloy of copper, tin, and zinc.

Material : RG7 BRONZE BUSHING (GC-CuSn7ZnPb as per DIN 1705) or CuSn7Zn4Pb7-C ( CC493K) as per EN 1982

Finish Size/(Base size Ø)

RG7 / CC493K bronze round bar

Dimension, RoHS compliant, REACH. CuSn7Zn4Pb7-C Rg7 BRONZE BEARING

Cast bronze bushing & bearings material bronze rg7
Solid Bronze bushings

RG7 Solid Bronze Alloy Bearings
RG7 BRONZE EQUIVALENT RG7 BRONZE EQUIVALENT BUSHINGS CHARACTERISTICS

• Conventional bearing material for lubricated applications in general engineering applications
• RG7 BRONZE BEARINGS APPLICATIONS Industrial – Mechanical handling and lifting equipment, general and special engineering, agricultural equipment, textile machinery, automotive engineering, etc.
• Suitable for oil and grease lubrication

Rg7 is the most common bronze alloy worldwide. The material properties make this alloy well suited for cast bronze bearing and groove bushing!

Solid Bronze Bushing Catalog, Size Chart

solid bronze bushing CuSn7Zn4Pb7 bronze bushing.pd...

Characteristics

Permissible load (dyn/stat), N/mm2 25 / 45

Permissible sliding velocity, m/s 0,5

Friction coefficient m (greased) 0,08 0,15

Temperature range, °C –40 +250

RG7 Bronze Alloy Bearings and Bronze Sleeve Bushings Application recommendations

Shaft tolerance e7 – e8

Housing tolerance H7

Shaft roughness Ra, mm 0 1,0

Shaft hardness, HB 165 – 400

Leaded gunmetal SAE 660 continuous castings bearings and centrifugal castings bushing leaded gunmetal.VIIPLUS as a large stock of bushings and bronze bearing with immediate availability.For pieces with bronze bushings & sliding bearings diameter of ≤ 400 mm. For larger sizes values to be agreed with the order. For small diameter bronze bearings ≥8mm.Get Competitive self-lubricating bronze bushing & gleitlager rate with your best China, Online Support, let viiplus handle your next shipment now.

AVAILABILITY RG7 BRONZE BEARINGS ACCORDING TO rg7 Bearing type made to order: Cylindrical bushes with bronze alloy, special parts according to ISO, DIN or customer design, special alloys

Continuous Casting & Centrifugal Casting

The Most Complete and Flexible
BRONZE AND HIGH TENSILE BRASS FOUNDRY IN CHINA
Contact viiplus and Get a Better bronze bearings prices Rate from China.
Contact us and Reduce bronze gleitlager Your Cost. ... we will always be your best partner for self-lubricating bronze bearings from China. Anywhere you need to send your shipment from China.

CC 493K / RG7 BRONZE BUSHING

Rg7 bronze bearings

Typical Uses

SAE660 has traditionally been used as general utility bearings, bushings and wear plates, and other engineering components requiring good wear resistance and machinability.
SAE660

We supply Cast bronze bearings, RG7, C93200Cusn7zn4pb7 bronze graphite bearings, flange, straight type, wear plate, thrust washer. custom bearings.
Bronze Bearings Datasheets: SAE660 / CC493K offers very good machining properties and reasonable strength and hardness levels. The tin and the lead content in the material also enhances the alloys wear resistance and gives excellent anti-friction qualities. SAE660 / CC493K is not subject to dezincification and offers reasonable corrosion resistance in seawater and brine. This makes it suitable for pump and valve components bearings and bushings having medium loads and speeds with adequate lubrication.
CC493K, Gunmetal,

Gunmetal, Red Bronze etc.

Rg7 is the most common bronze alloy worldwide. The material properties makes this alloy well suited for bearings, valve bushings, bronze wear plates,trust washer and similar bronze parts. Pressure-tight with good dry running properties and easy to machine simply makes this an excellent all around bronze alloy.

Areas of use

Straight & flange bronze standard bearings, sliding bearings, valve bushing, pump housings, water, and steam fitting, and much more.

Bronze prats type

l Flange bearing

l Straight bushing

l Washer

l Plate

l Custom part

Red bronze RG7

Discover our bronze bearing & gleitlager products

Mechanical properties
Yield strength (Rp N/mm²): ≥ 120 N/mm²
Tensile strength (Rm N/mm²): ≥ 260 N/mm²
Elongation in % A5: ≥ 12%
Hardness/Brinell: ≥ 70 HB
Density of ∼ 8.8
Mating material: Min. surface hardness 200HB. Rec. surface roughness < 1 Ra
Characteristics The material is not suitable for welding (lead content). The material is suitable for soldering and brazing. The material is also suitable for bonding.

General Purpose Bushings Corrosion Resistance, Machine Parts, Pump BushingsThrust Washers

C93200 Leaded Tin Bronzes Bushing

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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