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CuSn8p (DIN 17662) CuSn6p Material Size Selection Of Plain & Flanged Bronze Bearings For Various Applications

2019-02-27

Enhancing Hydraulic Systems with VIIPLUS CuSn8P & CuSn6P Bronze Bearings: A Technical Guide

In industries where load capacity, corrosion resistance, and minimal maintenance are critical, VIIPLUS CuSn8P (DIN 17662) and CuSn6P bronze bearings offer tailored solutions for hydraulic elevators, freight systems, and heavy machinery. This article delves into material properties, size selection, and application-specific benefits—supported by comparative tables and technical insights to optimize performance and cost efficiency.


Material Comparison: CuSn8P vs. CuSn6P Bronze Alloys

VIIPLUS leverages these alloys for their unique strengths. Below is a detailed comparison:

Property CuSn8P (DIN 17662) CuSn6P
Composition Cu + 8% Sn, 0.1–0.4% P Cu + 6% Sn, 0.1–0.4% P
Tensile Strength 280–340 MPa 250–300 MPa
Yield Strength 120–150 MPa 100–130 MPa
Hardness (HB) 75–95 65–85
Corrosion Resistance Excellent (marine/chemical) Good (general industrial)
Best For High-load hydraulic systems Moderate-load, cost-sensitive

Key Takeaway: CuSn8P excels in extreme environments, while CuSn6P offers a cost-effective solution for standard loads.


Size Selection Guide for Plain & Flanged Bearings

Optimal sizing ensures longevity and performance. Use this matrix based on application:

Application Bearing Type Wall Thickness Shaft Diameter Range Tolerances
Hydraulic Elevators Flanged (VSB-80) 2–5 mm 20–150 mm Housing: H7, Shaft: h8/f7
Freight Platforms Plain Cylindrical 3–6 mm 30–200 mm Housing: H7, Shaft: h8
Aerial Lifts Bimetal (Stainless) 1.5–4 mm 15–100 mm Housing: H7, Shaft: f7
Marine Equipment Corrosion-Resistant 4–8 mm 50–300 mm Housing: H7, Shaft: h8

Critical Tolerances:

  • Housing: H7 (precise press-fit).

  • Shaft: f7 to h8 (surface roughness ≤ Ra 0.8).


Advantages of VIIPLUS Bearings in Hydraulic Elevators

Hydraulic elevators demand reliability under cyclical loads. VIIPLUS oil-free bearings enhance performance:

Factor Traditional Bearings VIIPLUS Self-Lubricating Bearings
Maintenance Monthly greasing required Zero lubrication (graphite/PTFE plugs)
Load Capacity 80–120 MPa 150–180 MPa (CuSn8P)
Service Life 2–3 years 5–8 years
Stability Risk of sway due to wear Reduced gap deviation (<0.1 mm)
Cost Efficiency High long-term maintenance costs 40% lower lifecycle costs

Case Study: A logistics firm retrofitted hydraulic freight elevators with VIIPLUS CuSn8P flanged bearings. Results:

  • Downtime Reduction: 60% fewer maintenance halts.

  • Load Capacity Increase: From 1.5 to 2.2 tons.

  • Safety Compliance: Eliminated grease contamination in food transport units.


Bimetal Bearings (VSB-80 Series): Bridging Durability and Versatility

VIIPLUS bimetal bearings combine steel/bronze backings with self-lubricating layers:

  • Materials: Stainless steel, carbon steel, or bronze backing + PTFE/graphite.

  • Applications:

    • Marine: Rudder bearings (saltwater resistance).

    • Construction: Crane pivot joints (shock load up to 200 MPa).

    • Mining: Conveyor rollers (abrasion-resistant).

Feature VSB-80 Bimetal Bearings Standard Bronze Bearings
Corrosion Resistance High (stainless steel backing) Moderate
Installation Ease Pre-lubricated, press-fit ready Requires post-installation greasing
Temp Range -40°C to +240°C -20°C to +180°C

Installation Best Practices

  1. Surface Prep: Polish shaft to Ra ≤ 0.8 µm.

  2. Press-Fitting: Use hydraulic press (10–30 tons) to avoid deformation.

  3. Post-Installation Check: Verify ID with plug gauge (H9 tolerance).

Common Pitfalls:

  • Misalignment: Causes uneven wear. Use alignment jigs.

  • Excessive Force: Damages thin-walled bearings. Follow VIIPLUS tonnage guidelines.


Conclusion

VIIPLUS CuSn8P and CuSn6P bronze bearings, alongside VSB-80 bimetal variants, redefine reliability in hydraulic systems and heavy machinery. Their self-lubricating design, compliance with DIN/ISO standards, and tailored sizing ensure enhanced performance and cost savings.

Upgrade Your Equipment Today
[Contact VIIPLUS] at +86-0573-84499350 or tiffany@viiplus.com for custom solutions.


Meta Description: Explore VIIPLUS CuSn8P/CuSn6P bronze bearings for hydraulic elevators. Compare materials, sizes, and benefits of self-lubricating vs. traditional bearings.

Keywords: CuSn8P bronze bearings, hydraulic elevator bushings, self-lubricating bearings, VIIPLUS bimetal bearings, DIN 17662 bearings.

By integrating material comparisons, application matrices, and case studies, this guide empowers engineers to optimize hydraulic systems with precision-engineered VIIPLUS solutions.