Unlocking Efficiency: A Technical Guide to C86300/C86200 Bronze Plugged Sleeve Bushings & VIIPLUS Custom Solutions
In industries like papermaking, printing, and heavy machinery, bearing failures due to contamination, high loads, or inadequate lubrication can cripple productivity. Turned bronze plugged sleeve bushings, particularly those made from C86300/C86200 manganese bronze alloys, offer a robust, maintenance-free solution. This guide dives deep into their design, applications, and VIIPLUS’s tailored engineering expertise, supported by technical charts, tables, and industry-specific insights.
C86300 and C86200 are high-strength manganese bronze alloys prized for their wear resistance and load capacity.
| Element | C86300 (%) | C86200 (%) | Role |
|---|---|---|---|
| Copper | 60–66 | 60–66 | Base metal: Corrosion resistance. |
| Manganese | 2.5–5.0 | 2.5–5.0 | Enhances hardness and strength. |
| Zinc | 22–28 | 22–28 | Improves machinability. |
| Iron | 2.0–4.0 | ≤2.0 | Boosts load capacity (C86300). |
| Aluminum | 3.0–7.5 | 5.0–7.5 | Increases heat resistance (C86200). |
Mechanical Comparison:
| Property | C86300 | C86200 |
|---|---|---|
| Tensile Strength | 725 MPa | 655 MPa |
| Yield Strength | 345 MPa | 310 MPa |
| Hardness (HB) | 170–210 | 150–185 |
| Max Temp | 260°C | 200°C |
Best For:
C86300: Extreme loads (e.g., mining crushers).
C86200: Moderate loads with thermal cycling (e.g., hydraulic systems).
Oil grooves ensure even grease distribution, critical for oscillating or rotating motions.
| Groove Type | Design | Best For | VIIPLUS Customization |
|---|---|---|---|
| Helical | Spiral pattern | Continuous rotation | Adjust pitch for speed |
| Circumferential | Ring grooves | Oscillation < 90° | Depth/width tuning |
| Axial | Straight lines | Linear motion | Number of grooves |
| Crosshatch | Grid pattern | High-load, low-speed | Density optimization |
Case Study:
A paper mill reduced bearing failures by 70% using VIIPLUS’s crosshatch-grooved C86300 bushings, designed to handle oscillating dryer rollers.
| Parameter | Standard Flange (mm) | VIIPLUS Custom Options |
|---|---|---|
| Outer Diameter | 20–200 | ±0.05 mm tolerance |
| Bore Diameter | 10–150 | Custom honing for Ra ≤ 0.8 µm |
| Flange Thickness | 5–50 | Reinforced flanges for axial loads |
| Material | C86300/C86200 | Hybrid designs (e.g., graphite plugs) |
Advantages of Customization:
Weight Reduction: Thinner walls for aerospace applications.
Sealing Integration: Flanges with grooves for O-rings in balers.
| Factor | Turned Bronze Bushings | Cast Bronze Bushings |
|---|---|---|
| Precision | ±0.01 mm tolerances | ±0.1 mm tolerances |
| Surface Finish | Ra 0.4–0.8 µm | Ra 1.6–3.2 µm |
| Lead Time | 2–3 weeks (custom) | 4–6 weeks |
| Cost | Higher per unit, lower lifecycle cost | Lower upfront, higher maintenance |
Challenge: Steam, water, and fiber contamination.
VIIPLUS Fix: Graphite-plugged C86300 bushings with helical oil grooves.
Result: 15+ years of maintenance-free operation in dryer sections.
Challenge: Frequent grease washout in baling presses.
VIIPLUS Fix: Self-lubricating flanged bushings with MoS₂ coating.
Result: Zero downtime in newsprint recycling plants.
Challenge: High-speed shaft wear in transfer units.
VIIPLUS Fix: C86200 thrust washers with axial grooves.
Result: 50% reduction in heat generation.
Material Blends: Hybrid C86300-graphite for temperatures up to 300°C.
Geometry Optimization: Laser-machined grooves for adhesive wear reduction.
Global Compliance: Meets DIN 1494, ISO 3547, and ASTM B505.
Self-Lubrication: Graphite transfers to the shaft, forming a 0.03–0.08 friction coefficient film.
Contrast: Traditional bronze bushings require grease every 500 hours; VIIPLUS’s graphite-plugged variants last 20,000+ hours.
C86300/C86200 bronze bushings with optimized oil grooves and flanges deliver unmatched durability in harsh environments. VIIPLUS enhances these benefits through tailored designs, self-lubricating innovations, and industry-proven expertise.
Ready to Solve Your Bearing Challenges?
Contact VIIPLUS for a free technical consultation and custom bushing solutions tailored to your needs.
