API 8C 4145H Top Drive Main Shaft Forging

The top drive main shaft is the core transmission component of the oil drilling top drive system (Top Drive).

Product Description:
The top drive main shaft is the core transmission component of the oil drilling top drive system (Top Drive). It is responsible for transmitting high torque, bearing the drill string weight, and withstanding dynamic loads. Its performance directly impacts drilling efficiency and equipment reliability. The product complies with API Spec 8C standards.

Material: AISI 4140, 4340, 30CrNiMo8, 4145H, etc.

Specifications: Customizable upon request.

 

Material Tensile Strength (MPa) Yield strength (MPa) Elongation (%) Application Scenario
30CrNiMo8 980-1180 ≥835 ≥12  

Deep-sea

drilling

 

4140 Mod 860-1000 ≥730 ≥15 Conventional land drilling
4145H 950-1100 ≥800 ≥13 H₂S-Service

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Email :Sales@tiptopforging.com