The UCP series of outer spherical bearing vertical pillow block sliding bearings with seat offers a robust and reliable solution for various industrial applications. These bearings are designed to handle both radial and axial loads, providing smooth and efficient operation under demanding conditions.

The UCP series features a unique spherical outer surface that allows for easy installation and alignment. The pillow block housing provides stability and support, while the sliding bearing design ensures smooth movement and reduced friction.

The bushing blocks, which form the core of these bearings, are precision-machined to ensure accurate fit and long-lasting performance. They are typically made from high-strength materials such as cast iron or steel, which can withstand heavy loads and harsh environments.

In addition to the bushing blocks, UCP series bearings also include thrust plates. These plates are designed to support axial loads and prevent the bearing from moving in an unwanted direction. They work in conjunction with the bushing blocks to provide a complete solution for rotational and linear motion applications.

The UCP series of vertical pillow block sliding bearings is suitable for a wide range of industrial applications, including pumps, conveyors, fans, and other rotating equipment. They are commonly found in oil and gas, mining, earthmoving, and other heavy-duty industries where reliability and durability are paramount.

With their robust design, precision-machined components, and ability to handle both radial and axial loads, UCP series bearings are an excellent choice for any application requiring smooth and efficient rotational or linear motion.

Pilllow block Sliding Bearing Outer spherical bearing vertical pilllow block with seat

Bushing Blocks and Thrust Plates​ Spherical shaft with outer seat made in china

The outer spherical ball bearing with seat is an inner ring widened deep groove ball bearing with double seal and spherical section on the outer ring
A bearing unit consisting of a bearing seat and a bearing seat. The spherical fit between the bearing and the bearing seat can realize automatic centering to compensate for installation
Errors caused by axial misalignment, long bearing deflection and installation bottom surface deformation.
The outer spherical ball bearing with seat is compact in structure, easy to assemble and disassemble, suitable for simple support, often used in mining and management
Gold, agriculture, chemical industry, transportation machinery, etc.

Definition of pillow block Bearings: a block or standard to support a journal (as of a shaft) : Bearing

Pillow block bearing

A pillow block is a pedestal used to provide support for a rotating shaft with the help of compatible bearings & various accessories. Housing material for a pillow block is typically made of cast iron or cast steel.

UCP series bearings are a series of metric spherical bearings with bearings.

Spherical Pilllow block bearing with seat: UCP,UCF,UCFL,UCT,UCFC UCPH, UCFA UCPA, UCFB, UCHA and other models complete Outer spherical ball bearing is actually a variant of deep groove ball bearing.

Its characteristic is that its outer ring and outer diameter surface are spherical, which can be fitted into the corresponding concave spherical surface of the bearing seat to play the role of centering.

High precision high speed high durability

Outer spherical ball bearing with seat

Spherical bearing with seat is a kind of bearing unit which combines rolling bearing and bearing seat.Most of the outer spherical bearings are made of the outer diameter of the spherical, with spherical bore bearing seat installed tog, a variety of structural forms, versatility and good interchangeability.

At the same time, this kind of bearing in the design also has a certain degree of centrality, easy to install, with a double structure of the sealing device, can work in bad conditions.The bearing block is generally cast.The commonly used seats are vertical seat (P), square seat (F), boss square seat (FS), boss round seat (FC), diamond seat (FL), ring seat (C), slider seat and so on (T).

External spherical bearing with seat is divided into bearing center and bearing seat, in the name of bearing center plus bearing seat, such as with set screw external spherical bearing UC205 with vertical seat called UCP205.Because of the strong interchangeability of the spherical bearing with seat, the bearing center can be assembled at will in the bearing seat of the same specification and different shapes.

Pilllow block Bearings Series

• Outer spherical ball Pilllow block bearing with vertical seat
• Outer spherical Pilllow block bearing with square seat
• Outer spherical ball Pilllow block bearing with diamond seat
• Cylindrical spherical ball Pilllow block bearing with boss
• Outer spherical ball Pilllow block bearing with annular seat
• Outer spherical ball Pilllow block bearing with sliding block seat
• External spherical ball Pilllow block bearing with suspension seat
• External spherical ball Pilllow block bearing with suspension seat
• Outer spherical ball Pilllow block bearing with adjustable diamond seat
• Outer spherical ball Pilllow block bearing with punch seat
• Outer spherical ball Pilllow block bearing with other seats

UCP 204 205 206 207 208 209 210 203 UC201

Pilllow Block Bearing Sizes Table

Dimension specification table of bearing with seat

UCP bearing is also known as vertical seat top wire spherical bearings, some kinds of bearings with seat spherical bearings in the most classical and most commonly used form, suitable for all the transmission device and shaft and installation surface parallel to the mechanical.National label: GB/T7810

Note:

1. The overall dimensions of ucp201-ucp203 in the table are the same;
2. UCP201 has a diameter of 12, UCP202 has a diameter of 15, and UCP203 has a diameter of 17.All diameters above UCP204 are multiplied by the last two digits by 5. For example, UCP204 has a diameter of 20mm and UCP205 has a diameter of 25mm.
3. The first number after UCP is bearing series, 2 is light series and 3 is heavy series.

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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