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  • DQ70BZ02-YM Oil Top Drive
DQ70BZ02-YM Oil Top Drive

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DQ70BZ02-YM Oil Top Drive

① High efficiency and energy saving: The top drive boasts high efficiency and energy savings, making it an ideal fit for the future development trend of green and low-carbon drilling equipment.
② Silent and environmentally friendly: The gearless gearbox and lubrication oil pump operate with virtually no noise. Additionally, the machine employs sealed water-cooling and a hydraulically-powered station positioned below, ensuring that operational noise does not exceed 50 decibels, thereby significantly improving workers’ working environment.
③ Fully explosion-proof: The top drive’s main motor employs a sealed water-cooling technology, with the motor completely enclosed within the top drive housing, enabling true, fully explosion-proof performance.

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  • Product Parameters

    Drive methodAC Variable Frequency Drive (AC VFD)
    Nominal drilling depth (φ114mm drill pipe)7000m
    Rated load4500kN
    Power supply600VAC/50Hz (60Hz optional)
    Rated power of the main motor800 kW (continuous)
    Drilling torque80 kN·m / 95 rpm
    Maximum shackle torque120 kN·m
    Spindle speed range0–220 rpm
    Back clamp gripping range86mm~216mm
    Mud channelΦ75mm
    Mud channel circulation pressure52MPa
    Up (remote control)6 5/8″ API REG 70 MPa
    Next (manual)6 5/8″ API REG 70 MPa
    Hydraulic system working pressure14MPa
    Working height7.1m
    Main body weight18t
    Ambient temperature-20℃~55℃ (optional: -45℃~55℃)

    ① High efficiency and energy saving: The top drive boasts high efficiency and energy savings, making it an ideal fit for the future development trend of green and low-carbon drilling equipment.

    ② Silent and environmentally friendly: The gearless gearbox and lubrication oil pump operate with virtually no noise. Additionally, the machine employs sealed water-cooling and a hydraulically-powered station positioned below, ensuring that the operating noise does not exceed 50 decibels, thereby significantly improving the working environment for employees.

    ③ Fully explosion-proof: The top drive’s main motor employs a sealed water-cooling technology, with the motor completely enclosed within the top drive housing, enabling truly comprehensive explosion-proof performance.

    ④ Reliable performance: By adopting electric direct-drive technology, we’ve streamlined the internal structure of the top drive housing to its simplest form, thereby avoiding major overhauls at the factory caused by failures of even a single small gear or bearing. This maximizes the top drive’s operational reliability and continuous drilling capability.

    ⑤ Convenient Maintenance: In conventional mechanical top drives, metal debris generated by gear meshing contaminates the lubricating oil. However, the DQZ series top drives feature a gearless reduction mechanism and employ oil-immersion lubrication, which can effectively extend the service life of the lubricating oil and reduce the frequency of oil changes.

    ⑥ Precise Control: When the top drive is performing directional drilling or after activating the oscillating torque-reducing function, it is necessary to precisely control the rotation angle and direction of the main spindle.

DQ70BZ02-YM Oil Top Drive


① High efficiency and energy saving: The top drive boasts high efficiency and energy savings, making it an ideal fit for the future development trend of green and low-carbon drilling equipment.
② Silent and environmentally friendly: The gearless gearbox and lubrication oil pump operate with virtually no noise. Additionally, the machine employs sealed water-cooling and a hydraulically-powered station positioned below, ensuring that operational noise does not exceed 50 decibels, thereby significantly improving workers’ working environment.
③ Fully explosion-proof: The top drive’s main motor employs a sealed water-cooling technology, with the motor completely enclosed within the top drive housing, enabling true, fully explosion-proof performance.

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