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MQ-800 Series Bi-Metal Bushing

MQ-800 Series Bi-Metal Bushing

MQ-800 Bimetal composite bearing with high quality low carbon steel as backing, sintered bronze alloy which with low friction properties (CuPb10Sn10, CuPb6Sn6Zn3, CuPb24Sn4, AlSn20Cu, CuSn10, CuSn6.5P) as the wear-resistant layer;
In the inner bronze alloy surface can be processed with various types of oil grooves, oil hole and oil pockets according to the different working applications, to suitable for the conditions which can not continuously put oils or difficult to apply the grease.
Material can get good bonding strength and the best bearing capacity by two times of sintering.
(also known as JF-800; SJ)

Available types

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  • Parts types for oil pockets of bimetal bushing

  • Parts types for oil pockets of bimetal bushing

  • Parts types for oil pockets of bimetal bushing

  • Composition analysis of alloy

    Inner sintered layer MQ-800
    CuPb10Sn10    		 MQ-810
    CuPb24Sn4    		 MQ-820
    CuPb6Sn6Zn3    		 MQ-830
    CuSn10    		 MQ-840
    CuSn6.5P    		 MQ-850
    AlSn20Cu
    Cu Remainder Remainder Remainder Remainder Remainder 0.7~1.3
    Pb 9.0~11.0 21.0~27.0 2.0~4.0 0.1 0.1 -
    Sn 9.0~11.0 3.0~4.5 5.0~7.0 9.0~10.0 6.0~6.8 17.5~22.5
    Zn 0.5 0.5 5.0~7.0 0.3 0.3 -
    P 0.1 0.1 0.1 0.1 0.1~0.3 -
    Fe 0.5 0.7 0.6 0.5 0.6 0.7
    Ni 0.5 0.3 0.3 0.5 0.5 0.1
    Al - - - - - Remainder
    Other 0.5 0.5 0.5 0.5 0.5 0.5

  • Referance Material Standard Code.

    Material Alloy composition Alloy hardness International standard
    MQ-800 CuPb10Sn10 80~120HB JIS-LBC3. JIS-LBC3. SAE-797. DIN CuPb10Sn. UNS C93700. CLEVITE F100.
    CC495KDAIDO L10. D. A. B. D57. Federal Mogul HF2. Glacier SY. GLYCO66. ACL F100
    MQ-810 CuPb24Sn4 45~70HB JIS-LBC6. JIS-LBC6. SAE-799. GLYCO 68. DAIDO L23. Clacie rsx. ACL F250
    MQ-820 CuPb6Sn6Zn3 70-100HB Din17670
    MQ-830 CuSn10 70-100HB Din G-CuSn10 ;BS PB1
    MQ-840 CuSn6.5P 70-100HB DIN CuSn6(2.1020); JIS H3110
    MQ-850 AlSn20Cu 30~40HB JIS-AJL. SAE-783. GLYCO74. Glacier AS15. ACL820

  • Wall Thickness of No-machinable and Allow-machinable

    Bore of Bushing and Their Tolerances

    Norminal Wall Thickness Tolerances of Wall thickness (non-machinable) Tolerances of Wall thickness (allow-machinable)
    1.0 -0.025 +0.25
    +0.15
    1.5 -0.030 +0.25
    +0.15
    2.0 -0.035 +0.25
    +0.15
    2.5 -0.040 +0.30
    +0.15
    3.0 -0.045 +0.30
    +0.15
    3.5 -0.050 +0.30
    +0.15

  • Technical Data

    Data MQ-800 MQ-810 MQ-820 MQ-830 MQ-840 MQ-850
    Material Steel+
    CuPb10Sn10    		 Steel+
    CuPb24Sn4    		 Steel+
    CuPb6Sn6Zn3    		 Steel+
    CuSn10    		 Steel+
    CuSn6.5P    		 Steel+
    AlSn20Cu
    Alloy layer hardness HB 80~120 45~70 70~100 70~100 70~100 30~40
    Max dynamic Load P N/mm² 150 130 130 130 130 100
    Max.Speed V m/s Grease lubrication 3.5 2.5 2.5 2.5 - -
    Max.PV limit N/mm²·m/s 2.8 2.8 2.8 2.8 2.8 -
    Friction Coefficient u 0.05~0.10 0.05~0.15 0.05~0.15 0.05~0.15 0.05~0.15 -
    Max.Speed V m/s 8 10 5 5 5 15
    Max.PV limit N/mm²·m/s Oil lubrication 10 10 10 10 10 8
    Friction Coefficien u 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.05~0.02
    Max Working temperature ℃ Grease lubrication 150 150 150 150 150 150
    Oil lubrication 250 250 250 250 250 250
    Thermal conductivity W/mk 60 60 60 60 60 47
    Coefficient of linear expansion 18×10-6/K﹣¹ 19×10-6/K﹣¹ 18×10-6/K﹣¹ 18×10-6/K﹣¹ 19×10-6/K﹣¹ 18×10-6/K﹣¹
    Match the axis Hardness HRC ≥53 ≥45 ≥53 ≥53 ≥53 ≥270
    Roughness Ra 0.32~0.63 0.32~0.63 0.16~0.63 0.32~0.63 0.16~0.63 0.16~0.63
    Main Features
    ① Sliding ★★★★★ ★★★★★ ★★★★ ★★★★★ ★★★★ ★★★★
    ② Abrasion Resistance ★★★★★ ★★★ ★★★★ ★★★★ ★★★★ ★★★★
    ③ Hardness ★★★★★ ★★ ★★★★ ★★★ ★★★★ ★★
    ④ Anti-bite Shaft ★★★★ ★★★★★ ★★★ ★★★★ ★★★ ★★★★
    ⑤ Corrosion-resistant ★★★★★ ★★ ★★★★ ★★★★ ★★★★ ★★★
    ⑥ High loading ★★★★★ ★★ ★★★★ ★★★★ ★★★★ ★★★
    ⑦ Anti-fatigue ★★★★★ ★★★ ★★★★ ★★★★ ★★★★ ★★★
    ⑧ Environmental protection x x x ★★ ★★ ★

    *Initial pre-lubrication at assembly is required

    ● Electronic samples         ● Part of the product reference map

Jiashan Minqin Oilless Bearing Co., Ltd. a China Bimetal Bushings Manufacturers, set up May.2007. As professional wholesale Bimetal 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-800 Series Bi-Metal Bushing products.

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Industry Knowledge

Series bi-metal bushings are a type of plain bearing that consists of two different metals, usually steel and bronze, that are bonded together. The steel backing provides strength and rigidity, while the bronze layer provides wear resistance and self-lubrication properties.
The bi-metal construction of these bushings allows for a combination of strength and wear resistance, making them ideal for high-load and high-impact applications. The steel backing provides excellent load-carrying capacity, while the bronze layer provides excellent wear resistance and self-lubrication properties.
Series bi-metal bushings are commonly used in applications such as automotive engines, construction equipment, and industrial machinery. They offer several advantages, including reduced friction and wear, longer service life, and improved performance in harsh and dirty environments.
However, series bi-metal bushings can be more expensive than other types of bearings due to their advanced materials and manufacturing process. They can also be prone to galvanic corrosion, which can occur when two dissimilar metals are in contact with the presence of an electrolyte, such as water or moisture. Proper maintenance and inspection are necessary to prevent corrosion and ensure the optimal performance of these bushings.

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