Ningbo XiaYi Electromechanical Technology Co.,Ltd.
| Delivery Time | Within 20-25days after order confirmation |
| Load Capacity P (Dry) | 250N/mm2 (Static Load) |
| Application | hydraulic gear pump |
| Type | Sleeve |
| Packaging Details | Products packed by plastic bag, each bag contain 500pcs or 5kg Max |
| PV Value Limit | 50N/mm2 (Oil Lubrication) |
| Payment Terms | T/T,L/C |
| Inner layer | PTFE |
| Coefficient of Linear Expansion | 12*10 -6/K |
| Supply Ability | 50,000pcs per month |
| Product Name | BUSHING |
| Material of bands | Bronze steel |
| Model Number | SF-2 |
| Brand Name | XIAYI |
| Certification | IATF16949:2016 |
| Place of Origin | NINGBO,CHINA |
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Product Specification
| Delivery Time | Within 20-25days after order confirmation | Load Capacity P (Dry) | 250N/mm2 (Static Load) |
| Application | hydraulic gear pump | Type | Sleeve |
| Packaging Details | Products packed by plastic bag, each bag contain 500pcs or 5kg Max | PV Value Limit | 50N/mm2 (Oil Lubrication) |
| Payment Terms | T/T,L/C | Inner layer | PTFE |
| Coefficient of Linear Expansion | 12*10 -6/K | Supply Ability | 50,000pcs per month |
| Product Name | BUSHING | Material of bands | Bronze steel |
| Model Number | SF-2 | Brand Name | XIAYI |
| Certification | IATF16949:2016 | Place of Origin | NINGBO,CHINA |
| High Light | noise control DU bushing ，quiet damper DU bushing ，stable clearance DU bushing | ||
Designed for damper and pump applications where quiet, stable operation matters, the XIAYI SF-2 DU bushing combines a lead-based PTFE sliding layer with a sintered bronze interlayer and a low-carbon steel backing. The result is controlled clearance, reduced noise and vibration, and dependable dry-running performance that helps equipment run smoother for longer.
Common Concerns and How XIAYI Addresses Them
| Common Concern | How XIAYI Solves It |
|---|---|
| Annoying squeak and vibration during damper operation | Low friction coefficient (0.08~0.20 dry) and a stable transfer film suppress noise and vibration |
| Unstable clearance that causes rattling and uneven wear | Precision flange dimensions and controlled bronze interlayer keep clearance consistent |
| Frequent lubrication and messy grease maintenance | Runs long-term without oil, cutting downtime and keeping the workspace clean |
| Corrosion in harsh chemical or humid environments | Copper or tin plating (0.002mm) provides reliable corrosion resistance |
Specifications
| Parameter | Value |
|---|---|
| Temperature | -195 to +280 °C |
| Max. dry running Pv (short-term operation) | 3.6 N/mm2.m/s |
| Max. dry running Pv (continuous operation) | 1.8 N/mm2.m/s |
| Max. speed (dry running) | 2 m/s |
| Max. speed (hydrodynamic operation) | >2 m/s |
Description
1. Good load capacity and anti-wear performance.
2. Works for a long time without oil.
3. Low friction index.
Flange Bearing Size Range
| Min. ID | Min. OD | Max. ID | Max. OD | Min. FD | Max. FD | Max. Length |
|---|---|---|---|---|---|---|
| 6mm | 8mm | 40mm | 44mm | 12mm | 53mm | 40mm |
| 40mm | 46mm | 95mm | 105mm | 60mm | 144mm | 127mm |
| 25mm | 28mm | 300mm | 305mm | 35mm | 340mm | 90mm |
| 25mm | 28mm | 300mm | 305mm | 35mm | 340mm | 90mm |
| 10mm | 14mm | 120mm | 140mm | 22mm | 170mm | 100mm |
| 6mm | 12mm | 50mm | 60mm | 14mm | 70mm | 70mm |
| 6mm | 12mm | 300mm | 320mm | 35mm | 340mm | 130mm |
I.D. = inner diameter | O.D. = outer diameter | F.D. = flange diameter
Material Advantages
1. PTFE / Pb mixture 0.01-0.03mm provides an excellent initial transfer film.
2. Sintered bronze powder 0.20-0.35mm provides maximum thermal conductivity away from the bearing surface and acts as a reservoir for the PTFE-lead mixture.
3. Low-carbon steel backing gives exceptionally high load carrying capacity and excellent heat dissipation.
4. Copper / tin plating 0.002mm provides good corrosion resistance.
Technical Data
| Performance Index | Data | |
|---|---|---|
| Max load capacity | Static load | 250 N/mm2 |
| Dynamic load | 140 N/mm2 | |
| Max sliding speed | Dry friction | 2.5 m/s |
| Oil lubrication | 5.0 m/s | |
| Max PV value limit | Dry friction | 3.6 N/mm2 m/s |
| Oil lubrication | 50 N/mm2 m/s | |
| Friction coefficient | Dry friction | 0.08-0.20 |
| Oil lubrication | 0.02-0.07 | |
| Working temperature | -195°C ~ 280°C | |
| Thermal conductivity | 42 W/mk | |
| Coefficient of thermal expansion | 11*10-6 /k | |
Applications
Stainless steel bushing is widely used in strong acid and alkali situations, such as the chemical industry, pumps and valves.
Lead-free bearing is widely used in food machinery and pharmaceutical machinery.
Competitive Advantages
| 1. A complete set of testing equipment |
| 2. Rich experience in bushing production |
| 3. Good outsource factory |
| 4. Annual audit of material suppliers |
Packaging & Delivery
Packaging: products packed in plastic bags, each bag containing 500 pcs or 5 kg max, packed in cartons of 20 kg max. Delivered by wooden package or iron cage / pallet as requested. Standard size 800x800x1200, max gross weight 800 kg.
Delivery: within 10-15 days after order confirmation.
Frequently Asked Questions
Q: How does this bushing reduce noise in damper operation?
A: Its low friction coefficient (0.08~0.20 dry) and stable PTFE transfer film dampen vibration and suppress squeak, enabling quieter operation.
Q: What does "stable clearance" mean?
A: The precision flange dimensions and controlled sintered bronze interlayer keep the running clearance consistent, preventing rattling and uneven wear.
Q: What flange sizes are available?
A: Inner diameters range from 6mm to 300mm, outer diameters up to 320mm, and flange diameters up to 340mm. Custom sizes are also available.
Q: Is a lead-free version available?
A: Yes. Lead-free bearings are available and are widely used in food machinery and pharmaceutical machinery.
Q: What is the typical lead time?
A: Delivery is normally within 10-15 days after order confirmation, depending on quantity.
Company Details
Business Type:
Manufacturer
Year Established:
2006
Total Annual:
1500000-5000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Founded in 2006 and headquartered in the strategic port city of Ningbo, China, XIAYI is a premier high-tech manufacturer specializing in the research, development, and production of precision shock absorber components and automated assembly equipment. With nearly two decades of indust... Founded in 2006 and headquartered in the strategic port city of Ningbo, China, XIAYI is a premier high-tech manufacturer specializing in the research, development, and production of precision shock absorber components and automated assembly equipment. With nearly two decades of indust...
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