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Are you looking for a possibility to configure your product exactly the way you need it for your application? We will provide you with suitable self-lubricating bearings parts. We offer you a large repertoire of reliable configuration and bushing design. Reduce your process costs with our bushing parts and oilless bearings services. Do you require support? We are happy to help you – feel free to call us. Cost down, life up with self-lubricating metals
Self-lubricating Bearings Services
Trusted & reliable Self Lubricated Bearing Supplier
Trusted handyman services
Self-lubricating bearing bushing components, up to 10-times more abrasion-resistant than regular bearings materials.
Self-lubricating metal bushing for longer life
FAQ – Plain Bearings & Bushings – Applications & Services
Self-lubricating bearings series are made of high-performance metal and are therefore not only lubrication-free, but also extremely light and maintenance-friendly. Various designs are already available in metric size and inches size, but we also produce individual special parts for you.Self-lubricating bearings are suitable for all moving applications – from automotive mass production and special mechanical engineering, from underwater applications to the food or tobacco industry, for resistance to extreme temperatures and chemicals and for simple sheet-metal bushings. In various lengths and sizes are available. I would be happy to answer your questions personally.
“Together with our customers, partners and employees ‘!”
Frequently Asked Questions, Contact a Bearings Expert
Whether you’re interested in end-to-end, fully assembled solutions or looking to build your own customizable project, let us assist you with a solution based on your specific application and requirements. Contact us via email；
Quick and reliable, Delivery service.
FAQ – Bearings & Bushings – Applications & Services
Shopping at viiplus.com, Upon request we can deliver via express or special delivery. Please tell us your delivery time requirements. Order tracking on the Internet. Confirmations by e-mail, Order tracking on the Internet. Ready to ship, Small minimum order value with viiplus.com, No packaging costs. Just order the amount you need. We custom manufacture and deliver with small minimum order quantity. Availability for all standard parts. Calculate service life, configure and design self-lubricating bearing products. Create value through high-performance self-lubricating bearing solutions; Contribute to caring for the planet.
Frequently Asked Questions
Q: What is a Cast Bronze Bearing?
A: A cast bronze bearing is made by pouring molten metal into a spinning mold. This centrifugal casting process creates a dense, uniform structure—ideal for high-strength, cylindrical parts with minimal defects.
Q: What Materials Do You Cast?
A: We specialize in non-ferrous alloys, including bronze, brass, and copper-based materials. If you require a specific alloy, feel free to contact us—we’re happy to explore custom options to suit your needs.
Q: Do You Keep Inventory or Manufacture to Order?
A: Most parts are custom-made to match your exact specifications. However, we do maintain stock of select standard sizes and alloys. Let us know what you’re looking for, and we’ll check availability.
Q: What Are Your Typical Lead Times?
A: Standard lead times range from 4 to 6 weeks, depending on part complexity and quantity. For time-sensitive projects, expedited production may be available.
Q: Do You Offer Machining Services?
A: Yes, we offer comprehensive in-house machining to deliver components in either finished or semi-finished condition, tailored to your requirements.
Q: Can You Help with Design or Material Selection?
A: Absolutely. Our experienced team can support you in refining your design and choosing the right material for optimal performance, cost-effectiveness, and longevity.
Q: Is Delivery Included in Your Pricing?
A: Yes, all standard pricing includes delivery within China. There are no hidden costs.
Q: Do You Offer Emergency or Quick-Turnaround Services?
A: Yes, we prioritize urgent orders and breakdown situations whenever possible. Additional fees may apply for rush services.
Q: Do You Ship Internationally?
A: Yes, we ship worldwide. Delivery times and costs vary by destination—please contact us for a detailed quote.
The plain bearings are built for press-fitting into H7 housing bores. Their outer diameter is intentionally 0.1–0.25 mm larger than the nominal bore, securing them once installed. The inner diameter reaches its final size and tolerance only after the bearing is pressed in.
Why do bushings come in so many materials?
Manufacturers have created a range of bushing materials to meet diverse customer needs.
Self-lubricating bearings are classified into four types: composite, solid-embedded, bimetallic, and special-material. The choice depends on the application and operating conditions.
Solid-embedded self-lubricating bearings (JDB) combine the strength of metal with the maintenance-free qualities of oil-free designs. A metal matrix carries the load while inlaid solid lubricants provide continuous lubrication.
These bearings handle heavy loads, shocks, high temperatures, and reciprocating or oscillating motion where oil films are hard to maintain. They also resist water, acids, and abrasion.
As a result, JDB bearings are widely used in continuous casters, rolling mills, mining and lifting equipment, molds, textile machinery, wind turbines, ships, steam and water turbines, injection-molding machines, and production lines. Their wear resistance is double that of standard sleeves.
Durable Materials: Choosing Self-Lubricating Bearings
There’s no universal “best” self-lubricating plain bearing, and the priciest option isn’t always the most durable. The right bronze oilless bearing depends on your specific application—the more information you share, the more accurately we can balance performance and cost. Submit your dimensions to our product finder and bushing guide, and we’ll take care of the rest.
Chemicals present a major challenge for plain bearings. In the food industry, for example, bearings must withstand disinfectants, cleaners, and coolants. Self-lubricating bearing materials are extensively tested for chemical resistance to ensure reliable use in such environments, with stainless-steel-backed PTFE bushings offering particularly high resistance.
FAQ
1. Packing
We ship in plain cartons by default. With authorization and a registered patent, we can use your branded boxes.
2. Payment
T/T in advance. Preferential terms are available for long-term partners.
3. Delivery terms
EXW, FOB, CFR, CIF, or express services such as FedEx, DHL, and UPS.
4. Lead time
15–25 days after payment; add 10–15 days for non-standard items requiring new tooling.
5. Custom production
Provide a sample or drawing and we will manufacture accordingly. Tooling charges apply only to custom sizes.
6. Samples
Available from stock; buyer covers sample and courier costs.
7. Inspection
All products undergo 100% testing before shipment.
8. Long-term cooperation
• Stable quality and competitive pricing secure your profits.
• We value every customer and aim for lasting, friendly partnerships.
A high-performance metal plain bearing with a homogeneous structure delivers consistent, predictable performance.
Although many engineers still favor deep-groove or plastic bearings and question whether metal or bronze bushings can survive harsh conditions, self-lubricating metal bearings handle extreme temperatures, heavy loads, and high speeds. Their benefits and limitations should therefore be considered objectively.
Composite self-lubricating bearings embed solid lubricants that permanently lower the coefficient of friction. Unlike grease or oil, this lubricant cannot be washed away because it is uniformly distributed through the entire wall thickness. Bearings are available in multiple wall thicknesses, flange sizes, and plate configurations.
Wear inspection of self-lubricating bearings (viiplus.com)
Key factors
• Shaft material: Each shaft–bearing pairing shows distinct wear characteristics; match the shaft to the bearing type.
• Load: Wear rises with higher radial loads or surface pressures. Use bearings designed for the expected load.
• Speed and motion: Increasing speed accelerates wear. Motion type—oscillating, rotary, or linear—also plays a major role.
• Temperature: Within the specified range, temperature has little impact, but exceeding it can rapidly increase wear. Most metal-backed bearings tolerate wide temperature swings, though many materials wear faster as heat rises; some actually wear least at higher temperatures.
• Contamination: Dirt between shaft and bearing promotes wear. Oil-free, self-lubricating bushings reduce the risk of dust scoring.
• Chemicals: Composite bearings resist corrosion and many chemicals, but certain agents can alter their structure, soften them, and boost wear.
Tests with various shafts confirm these influences. The better the application parameters are understood, the more accurately bearing material and service life can be specified; correct material choice is decisive.
declaration of hazardous substances management regulations
All self-lubricating bearings type materials with this mark comply with RoHS directive requirements
RoHS (2011/65/EU)
Directive (EU) 2015/863, published on 4 June 2015, expands RoHS 2.0 by adding four phthalate plasticizers—DEHP, BBP, DBP and DIBP—to Annex II. Each must not exceed 0.1 % in any homogeneous material. Annex II now restricts ten substances: four heavy metals, two brominated flame retardants and the four listed phthalates.
ELV (2000/53/EC)
The ELV Directive promotes recycling of end-of-life vehicles and limits hazardous metals in cars manufactured after July 2003:
• Cadmium (Cd) ≤ 100 ppm (0.01 %)
• Mercury (Hg) ≤ 1000 ppm (0.1 %)
• Lead (Pb) ≤ 100 ppm (0.1 %)
• Hexavalent chromium (Cr VI) ≤ 1000 ppm (0.1 %)
General scope
RoHS governs hazardous substances in electrical and electronic equipment sold in the EU. Because complete elimination is often technically impossible, maximum concentration values are set for lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE). Typical uses include lead in solder or bearings and PBB as a flame retardant; these substances are also common in various metal alloys.
Lightweight construction minimizes material and energy use.
Minimal or no oil is needed, reducing environmental pollution.
An exceptionally smooth, low-friction surface lowers resistance and operating power.
Longer—or eliminated—maintenance intervals cut costs and contamination.
Metal and non-metal composites enhance strength while optimizing wear, extending service life.
Suitable for dust, vacuum, extreme temperatures, radiation, and other harsh conditions, simplifying equipment design and production.
All materials meet RoHS, REACH, and related environmental standards.
Machining of grinding parts and seat holes is easier; heat treatment, surface coatings, and tight tolerances can often be reduced or omitted, saving energy and manufacturing costs.
Compared with traditional bearings, self-lubricating bearings use simpler processes and consume less energy.
In general 500~1000 pcs, but can accept low quantity in some special conditions.
For a quotation, please provide the drawing (PDF or DWG), material, weight, quantity, and any special requirements.
If you lack a drawing, send a sample, product code, or photo, and we will prepare a quote using our self-lubricating bearing expertise.
Always self-lubricating & grease-free
Ready & Waiting To Assist
Cost-effective, Slide bearing technology
Maintenance-free plain bearings
Improved applications and astounded customers，Lowering costs and raising service life with no lubrication and a reduction in maintenance work, everything delivered immediately from stock – that is the core idea and the objective of all self-lubricating bushing & plain bearings. The plain bearings range includes sleeve bearings, flange bearings, thrust washers, and many other designs. Self-lubricating beaeing always offer a solution – either from the catalogue range or as custom-made metal bearing special solution. Small minimum quantity!
Economic bearings bushing, standard wall thickness
High Performance Self-Lubricating, Polymer Bush Supplier
Self-Lubricating produces high-performance polymer bushings for nearly every major industry. Our advanced self-lubricating composite bearings meet the most demanding applications, backed by a tradition of innovation and engineering expertise. We work closely with customers to solve current challenges and anticipate future needs. Economical bearings with standard wall thickness ensure long service life, operate quietly, come in common sizes, and are consistently in stock. Free CAD drawings are available.
“ Sliding bush bearing material and design .!”
Always self-lubricating & grease-free
PTFE Half-Bearings Bushings
Engineered Bearings & Thrust Washer, Half Bushing. Search Engineered Bearings! Driven by our deep R&D capabilities and engineering expertise, we deliver consistent, reliable self-lubricating bearings performance tailored for the application. With a reputation for high quality, service and design, sliding bushing bearings feature precision tolerances, proprietary internal geometries and premium non-lubricating materials. As the name describes, half-bushing are not fully circular, but they are more like half circles. These are used where the load is in one direction and is sufficiently heavy to keep the journal on bushings, such as in railway cars.
Cost-effective, Slide bearing technology
Maintenance-free plain bearings
Engineered Plain Bushing Bearings, Power Transmission Sleeve Bearing Products, Cylindrical Bushes & PTFE Thrust Washers,
We apply our power transmission knowledge to serve our customers’ industrial motion needs more fully. Our diverse and growing offering of self-lubricating bushing, oilless lubrication bearings, sliding bearings products, flange bushing, thrust washer, thrust bearings, and industrial clutches and brakes keep systems running efficiently. And our industrial bearing bushing services return equipment to like-new condition, sustainably. Search Bearing Bushing Products
Reliable & Safe Self-lubricating Bearings Supplier
Customer-Specific Solutions, Personal consultation
The pain bushing promise of quality
