Heavy‑Duty Transmission Unit Industrial Power Transmission Assembly for Oilfield Equipment

Heavy‑Duty Transmission Unit Industrial Power Transmission Assembly for Oilfield Equipment

The heavy‑duty Transmission Unit serves as a critical power transfer assembly for on‑shore drilling and workover rig systems. It transmits power from prime movers such as diesel engines or electric motors to driven equipment including mud pumps, drawworks and rotary devices, realizing torque conversion, speed shifting and power distribution for overall rig operation.

Manufactured with high‑strength alloy steel gears and heavy‑load bearing groups, this transmission unit features robust forged housing structure, capable of sustaining shock load and frequent variable‑load conditions at oil‑gas well sites. Precision‑processed gear pairs ensure stable power output, low vibration and low noise during continuous heavy‑duty running.

Multiple shift‑speed configurations are available to meet different working‑condition demands. Optimized lubrication and cooling system reduces component wear and extends service life. Compact modular design facilitates field installation, inspection and spare‑part replacement.

Custom‑built versions can be supplied to match various rig power schemes. It is an indispensable core mechanical component to guarantee stable and reliable operation of land petroleum drilling equipment.

Transmission Unit Design Features:

• Driven by three diesel engines, it is fully equipped for double‑pump, drawworks, air compressor and generator operations to meet power‑supply requirements.
• Three power units are paralleled by belt drive for stable power output.
• Air‑tube clutches are adopted for power engagement and disengagement.

  Item	DAQING130‑Ⅱ	ZJ45J
  Installed Power	3×810 kW	3×810 kW
  Gear Reducer Ratio	1.536	1.536
  Power Transmission Device Ratio	3.14	1.722
  Tooth Number of Output Gear	36	40,26
  Overall Dimension (L×W×H)
  Unit 1	5135×1353×1345 mm	5935×1455×1815 mm
  Unit 2	6276×1196×1360 mm	7060×1325×1505 mm
  Unit 3	4536×1196×1360 mm	4795×1325×1505 mm
  Weight
  Unit 1	7010 kg	10270 kg
  Unit 2	5775 kg	9585 kg
  Unit 3	4265 kg	6525 kg