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China Suppliers Factory MQ-090 Bronze Wrapped Bushing for Agricultural and Construction Machinery
Application characteristics
- The advantages of light weight and low cost, for compact application, easy fitting;
- Oil pockets stored oil or grease, then the time for apply oil is extended over 5 times than the ones of general copper sleeve;
- Extremely high bearing capacity, especially can match the shafts with rough surfaces;
- High heat dissipation, small expansion coefficient, stable use, long service life;
- Excellent wear resistance with lower friction;
- Chemical resistance.
Material structure
Use high density bronze strips to roll the spherical oil pockets, in order to reduce wear, prolong the use time, good corrosion and protection function.
Jiashan Minqin Oilless Bearing Co., Ltd. a China Bronze Wrapped Bushings Manufacturers, set up May.2007. As professional wholesale Bronze Wrapped Bushings suppliers, Minqin has high-precision equipment, a high level of management team, and a high-quality workforce, and constantly improves the production process and refinement management platform, in strict accordance with the global quality certification system to do every detail for the industry to provide quality MQ-090 MQ-092 Bronze Wrapped Bushing products.
Standard tolerance for MQ-090/092 series bushing (As per to DIN 1494/ ISO3547)
| Standard Dia. | O.D.Size | Housing Bore(H7) | I.D.Size after mounting(H9) | Matching Shaft Diameter (f7 to f8) |
|---|---|---|---|---|
| 10~18 | +0.065 +0.030 |
+0.018 0 |
+0.046 0 |
- 0.016 - 0.043 |
| 18~30 | +0.075 +0.035 |
+0.021 0 |
+0.052 0 |
- 0.020 - 0.020 |
| 30~50 | +0.085 +0.045 |
+0.025 0 |
+0.062 0 |
- 0.025 - 0.064 |
| 50~80 | +0.100 +0.055 |
+0.030 0 |
+0.074 0 |
- 0.030 - 0.076 |
| 80~120 | +0.120 +0.070 |
+0.035 0 |
+0.087 0 |
- 0.036 - 0.090 |
| 120~180 | +0.170 +0.100 |
+0.400 0 |
+0.100 0 |
- 0.043 - 0.106 |
| 180~250 | +0.210 +0.130 |
+0.046 0 |
+0.115 0 |
- 0.050 - 0.122 |
| 250~315 | +0.260 +0.170 |
+0.052 0 |
+0.130 0 |
- 0.056 - 0.137 |
Technical Data
| Max.Loading | Static | 120N/mm² |
| Dynamic load | 40N/mm² | |
| Max.PV limit | Grease lubrication | 2.8N/mm²·m/s |
| Max.Speed | 2.5m/s | |
| Match the axis | Hardness | ≥50HRC |
| Roughness | Ra=0.4~1.0 | |
| Friction Coefficient | 0.05~0.25 | |
| Tensile strength | 470N/mm² | |
| Yield Strength | 280N/mm² | |
| Hardness | 100~120HB | |
| Density | 8.8g/cm³ | |
| Temperature Range | -100℃~+200℃ | |
| Thermal conductivity | 58 W(m·k)﹣¹ | |
| Coefficient of thermal expansion | 18.5×10-6·K﹣¹ |
Frequently Asked Questions
What are the primary advantages of MQ-090 and MQ-092 bronze wrapped bushings?
They offer a lightweight, low-cost solution for compact applications. Their spherical oil pockets store grease/oil, extending lubrication intervals by over 5 times compared to standard copper sleeves. They also provide high load capacity, excellent wear resistance, and chemical stability.
What materials are used in the construction of these bushings?
These bushings are manufactured using high-density rolled bronze strips. The spherical oil pockets are rolled into the surface to reduce friction, prolong service life, and provide outstanding corrosion protection.
What standard specifications do these bushings follow?
The MQ-090 and MQ-092 series bushings are manufactured in strict compliance with the international standard tolerance specifications of DIN 1494 and ISO 3547.
What is the operating temperature range for MQ-090/092 bushings?
These bronze wrapped bushings are designed to perform reliably under extreme temperatures, with an operational range spanning from -100℃ up to +200℃.
What are the load-bearing limits and maximum speed limits?
Under static conditions, the maximum load capacity is 120N/mm², and under dynamic conditions, it is 40N/mm². The maximum speed limit is 2.5m/s under grease lubrication conditions.