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China MQ-090/092 Bronze Wrapped Bushing Suppliers - High Quality FB Series Bushing from Factory
Application Characteristics
- 1 The advantages of light weight and low cost, for compact application, easy fitting.
- 2 Oil pockets stored oil or grease, then the time for apply oil is extended over 5 times than the ones of general copper sleeve.
- 3 Extremely high bearing capacity, especially can match the shafts with rough surfaces.
- 4 High heat dissipation, small expansion coefficient, stable use, long service life.
- 5 Excellent wear resistance with lower friction.
- 6 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 DIN 1494 / ISO 3547)
| 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
| Parameter | Condition | Value |
|---|---|---|
| Max. Loading | Static | 120 N/mm² |
| Dynamic Load | 40 N/mm² | |
| Max. PV Limit | Grease Lubrication | 2.8 N/mm²·m/s |
| Max. Speed | 2.5 m/s | |
| Match the Axis | Hardness | ≥50 HRC |
| Roughness | Ra = 0.4~1.0 | |
| Friction Coefficient | 0.05~0.25 | |
| Tensile Strength | 470 N/mm² | |
| Yield Strength | 280 N/mm² | |
| Hardness | 100~120 HB | |
| Density | 8.8 g/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
Q
What is the MQ-090/092 Bronze Wrapped Bushing used for?
The MQ-090/092 Bronze Wrapped Bushing is designed for applications requiring compact, lightweight, and low-cost bearing solutions. It is ideal for machinery where shaft support, wear resistance, and reduced friction are critical requirements.
Q
How do the oil pockets in the bronze bushing extend lubrication intervals?
The spherical oil pockets are formed by rolling high-density bronze strips. These pockets store oil or grease and release it gradually during operation, extending the lubrication interval to over 5 times that of standard copper sleeves.
Q
What is the maximum operating temperature range for MQ-090/092 bushings?
The MQ-090/092 Bronze Wrapped Bushing can operate reliably within a temperature range of -100℃ to +200℃, making it suitable for both low-temperature and high-temperature industrial environments.
Q
What shaft hardness and surface roughness are recommended for these bushings?
For optimal performance, the mating shaft should have a hardness of ≥50 HRC and a surface roughness of Ra = 0.4~1.0. The bushing is especially capable of matching shafts with relatively rough surfaces.
Q
What standards does the MQ-090/092 series comply with?
The MQ-090/092 series bushings comply with DIN 1494 / ISO 3547 international standards for dimensional tolerances, ensuring compatibility and interchangeability with globally standardized housing and shaft dimensions.
Q
What are the key mechanical properties of the MQ-090/092 Bronze Wrapped Bushing?
Key mechanical properties include a tensile strength of 470 N/mm², yield strength of 280 N/mm², hardness of 100~120 HB, density of 8.8 g/cm³, and a low friction coefficient of 0.05~0.25. These properties ensure high durability, excellent load capacity, and long service life.