Selecting the ideal bearing for your specific application can be a challenging task. With an extensive array of bearing types and sizes to choose from, to understand the various options available now!
Bearing maintenance is important to keep bearings running properly in a variety of applications. Our Self-lubricating bearings are oil-free & maintenance-free
Our high-performance bearings are designed and manufactured to meet a range of stringent requirements to ensure they remain efficient at high speeds, high loads, and high precision.
Types Of Spherical Plain Bearings
Radial Spherical Plain Bearing
Radial spherical plain bearings have been meticulously crafted to handle predominantly radial loads, demonstrating excellent adaptability to angular misalignments. These bearings consist of an inner and outer ring, with a spherical sliding surface nestled between them. Due to their exceptional attributes, radial spherical plain bearings find widespread application in scenarios involving oscillating movements, ensuring minimal friction and facilitating smooth motion.
Angular Contact Spherical Plain
angular contact spherical plain bearings. These specialized bearings excel in managing combined loads, adeptly handling both radial and axial components. Featuring a split inner ring and a single-piece outer ring, they possess remarkable load-carrying capacity, especially when confronted with higher axial loads. Compared to their radial counterparts, angular contact spherical plain bearings demonstrate superior capabilities in such demanding situations.
Thrust Spherical Plain Bearing
Lastly, let’s turn our attention to thrust spherical plain bearings. Designed with the explicit purpose of dealing with axial loads, these bearings boast two flat raceways, expertly accommodating a spherical sliding surface in between. Thrust spherical plain bearings prove invaluable in applications characterized by high axial loads or axial misalignment.
Versatile Spherical Plain Bearing
What Are Spherical Plain Bearings?
Spherical plain bearings, also known as spherical plain bushings or spherical plain joints, are self-aligning plain bearings designed to accommodate angular misalignment. They consist of an inner ring, an outer ring, and a spherical sliding contact surface. These bearings are commonly used in applications where misalignment or oscillating movements occur.
A typical spherical plain bearing comprises an inner ring with an inner bore, an outer ring with an outer surface, and a sliding contact surface. The sliding contact surface may be lined with various materials to enhance performance, and one such material is graphite.
Unmatched Durability for Your Machinery
The Role of Graphite in Spherical Plain Bearings
Graphite is a naturally occurring form of carbon known for its lubricating properties. It has a unique layered structure that allows for low-friction movement between surfaces.
Graphite as a Lubricating Material
In spherical plain bearings, graphite is used as a solid lubricating material. It acts as a dry lubricant that reduces friction and wear between the sliding surfaces of the bearing. Graphite’s self-lubricating properties make it an excellent choice for applications where conventional liquid lubricants are not suitable or practical.
Benefit Of Plug Graphite
To begin with, plug graphite offers a highly efficient lubrication mechanism that minimizes reliance on external lubricants. This not only leads to reduced maintenance needs but also extends the overall lifespan of the system. Additionally, graphite demonstrates exceptional resistance to elevated temperatures, making it exceptionally well-suited for demanding environments. Lastly, the inherent self-lubricating properties of graphite significantly diminish the risk of bearing failure caused by insufficient lubrication.
Steel/Copper Alloy，Spherical Bearing Lubrication
The maintenance-free spherical plain bearings sliding contact surfaces have three groups: steel-on-PTFE composite material, steel-on- PTFE fabric, and steel-on-copper alloy. Dynamic load support capability of steel-on- PTFE fabric spherical plain bearings is higher than that of steel-on-PTFE composite material. They have very low friction and can be operated without maintenance.
The permissible operating temperature range for a steel/copper alloy spherical bearing with lubrication is -50°C to +150°C. The bearing consists of a steel outer ring and a bronze alloy inner ring. It is important to ensure proper lubrication of the spherical bearing to maintain its performance within the specified temperature range.
Radial Spherical Plain Bearings Used In Forklift Trucks
Radial spherical plain bearings are utilized in several components of the steering assembly for forklift trucks. These components include the articulated steering axle, drag link, and kingpin. The purpose of these bearings is to enable smooth and efficient movement, allowing for precise steering and maneuverability of the forklift truck.
Textile Industry Solution
In the textile industry, metric radial-type spherical plain bearings are employed in heavy-duty extractors. These bearings serve a specific purpose in this application, namely, to accommodate misalignment in the suspension rods. By utilizing these bearings, the extractor can effectively absorb any misalignment, ensuring smooth operation and reducing stress on the equipment. This helps to maintain the reliability and performance of the extractor in the demanding textile industry environment.
Excavator Bushing
Get the part you need fast from our huge selection of excavator bushings. Specializes in Supplying Heavy Equipment Parts for Heavy Machines. Contact Us Now.
Robot Bearing Bronze
Rotational or swiveling movements of a robot require joints in which robot bearing bronze ensures "smooth" operation and Reduces downtime and avoidable accidents
Cam Unit
Our standard cam units are used to punch, cut, and form sheets and plates. It Change vertical movement into horizontal or inclined movement by the use of inclined wedges and sliding blocks.
Benefits and Advantages of Spherical Plain Bearings with Graphite
High Load Capacity and Durability
Spherical plain bearings with graphite offer exceptional load-carrying capabilities, making them suitable for heavy-duty applications. The robust design and high-quality materials used in their construction ensure long-term durability and reliable performance.
Self-Lubricating Properties
The addition of graphite to spherical plain bearings eliminates the need for continuous lubrication. This feature significantly reduces maintenance efforts and costs associated with bearing lubrication, making them ideal for inaccessible or hard-to-reach areas.
Reduced Maintenance Requirements
With their self-lubricating properties, spherical plain bearings with graphite require minimal maintenance compared to conventional bearings. This advantage translates into increased uptime and productivity in industrial settings.
Enhanced Performance in Extreme Conditions
Graphite’s ability to withstand high temperatures and harsh environmental conditions makes spherical plain bearings with graphite well-suited for demanding applications. They can operate reliably in extreme temperatures, corrosive environments, and areas with high vibration levels.
Applications Of Graphite Plug Spherical Plain Bearings
Spherical Plain Bearing Manufacturer
Experience the pinnacle of quality with our exceptional range of spherical plain bearings. Designed to meet diverse requirements, our bearings are readily available for purchase through our convenient online store. Customization options allow you to tailor the dimensions to your exact specifications. Additionally, we offer prompt delivery of unique designs upon request, showcasing our extensive expertise spanning over four decades in plain bearing technology.
Spherical plain bearings, as machine elements, adhere to stringent industry standards. These bearings facilitate smooth sliding contact between the inner and outer rings. Excelling in rotary, tilting, and swiveling movements, they demonstrate remarkable resilience against shocks, impacts, and vibrations. This makes them a preferred choice for reliable load-bearing and guiding functions.
Spherical Plain Bearing Inner Ring Plugged Graphite Size Chart
| Standard No. | d(H7) | D1(h6) | B | C | D | b | Alignment Angle (°) | Allowable Radial Load (kN) | Allowable Thrust Load (kN) |
|---|---|---|---|---|---|---|---|---|---|
| JQB-015 | 15 | 26 | 12 | 9 | 22 | 4 | 8 | 6.5 | 0.5 |
| JQB-020 | 20 | 32 | 16 | 14 | 28 | 4 | 4 | 12.6 | 1.4 |
| JQB-025 | 25 | 42 | 21 | 18 | 36 | 4 | 5 | 21.8 | 2.5 |
| JQB-030 | 30 | 50 | 27 | 23 | 44 | 4 | 6 | 32 | 3.5 |
| JQB-035 | 35 | 55 | 30 | 26 | 49 | 4 | 5 | 43.7 | 4.8 |
| JQB-040 | 40 | 62 | 33 | 28 | 55 | 4 | 6 | 54.7 | 5.7 |
| JQB-045 | 45 | 72 | 36 | 31 | 62 | 4 | 5 | 69.7 | 7.2 |
| JQB-050 | 50 | 80 | 42 | 36 | 70 | 4 | 5 | 92.4 | 10 |
| JQB-060 | 60 | 100 | 53 | 45 | 90 | 4 | 6 | 143 | 16 |
| JQB-070 | 70 | 110 | 58 | 50 | 99 | 4 | 5 | 181 | 20 |
| JQB-080 | 80 | 130 | 70 | 60 | 115 | 4 | 6 | 254 | 30 |
| JQB-090 | 90 | 140 | 76 | 65 | 125 | 4 | 6 | 313 | 36 |
| JQB-100 | 100 | 160 | 88 | 75 | 145 | 6 | 6 | 544 | 64 |
| JQB-110 | 110 | 170 | 93 | 80 | 155 | 6 | 5 | 642 | 73 |
| JQB-120 | 120 | 190 | 105 | 90 | 170 | 6 | 6 | 797 | 94 |
| JQB-130 | 130 | 200 | 110 | 95 | 180 | 6 | 5 | 880 | 105 |
| JQB-140 | 140 | 210 | 90 | 70 | 180 | 6 | 7 | 668 | 56 |
| JQB-150 | 150 | 220 | 120 | 105 | 200 | 6 | 5 | 1135 | 129 |
| JQB-160 | 160 | 230 | 105 | 80 | 200 | 6 | 8 | 891 | 73 |
| JQB-180 | 180 | 260 | 105 | 80 | 225 | 6 | 6 | 1002 | 74 |
| JQB-200 | 200 | 290 | 130 | 100 | 250 | 6 | 7 | 1434 | 117 |
| JQB-220 | 220 | 320 | 135 | 100 | 275 | 6 | 8 | 1577 | 118 |
| JQB-240 | 240 | 340 | 140 | 100 | 300 | 9 | 8 | 1720 | 118 |
| JQB-260 | 260 | 370 | 150 | 110 | 325 | 9 | 7 | 2075 | 143 |
| JQB-280 | 280 | 400 | 155 | 120 | 350 | 9 | 6 | 2455 | 172 |
| JQB-300 | 300 | 430 | 165 | 120 | 375 | 9 | 7 | 2630 | 172 |
Enhanced ride quality and stability of Your Spherical Plain Bearings
To ensure optimal performance and longevity, the sliding surfaces of spherical plain bearings can be enhanced with various protective measures. These include the application of molybdenum disulfide (MoS2), hard chromium plating, or a bronze liner, effectively reducing wear and friction. Furthermore, both the outer and inner rings can undergo phosphate coating, significantly bolstering their corrosion resistance. For added convenience, these bearings are available with an annular groove and lubrication holes, enabling seamless maintenance. In certain bearing designs, seals can be incorporated to safeguard against contamination, ensuring reliable operation even in challenging environments.
| SIZE | JDB-1 | JDB-2 | JDB-22 | JDB-23 | JDB-3 | DB-4 | JDB-5 |
|---|---|---|---|---|---|---|---|
| GB1776-87 | ZCuZn25 Al6Fe3Mn3 | ZCuSn6Zn6Pb3 | ZCuAl10Fe3 | ZCuSu10P1 | Steel+ ZCuSn6Zn6Pb3 | HT250 | GCr15 |
| ISO1338 | GCuZn25 Al6Fe3Mn3 | GCuSn6Zn6Pb3 | GCuAl10Fe3 | – | Steel+ CuSn6Zn6Pb3 Fe3Ni5 | – | B1 |
| DIN | G-CuZn25 Al5 | GB-CuSn5Zn5Pb5 | GB-CuAl10Ni | GB-CuSn10 | Steel+ CuSn6Zn6Pb3Ni | – | 100Cr6 |
| JIS | HBsC4 | BC6 | AIBC3 | BC3 | BC6 | FC250 | SUJ2 |
| ASTM/UNS | C86300 | C83600 | C95500 | C90500 | C83600 | Class40 | 52100 |
| （BS） | HTB2 | LG2 | AB1 | PB4 | LG2 | – | – |
Discover the Versatility and Performance of Spherical Plain Bearings
Unlock the Power of Plain Bearings
High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.
High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.
High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.