Nov Varco TDS11SA 30151953 OEM Shot Pin for Top Drive System

Product Name: TDS SHOT PIN ASSY
Brand: VARCO, TESCO, CANRIG, TPEC, JH, HH, BPM.
Applicable models: TDS4SA, TDS8SA, TDS9SA, TDS11SA
Part number: 117831,118563,30125099,30151875,
30151951,30151953,30151961,30156256,30171974,30173958,10852289-001,120852-503,10429
Price and delivery: Contact us for an exclusive quotation
Function: Angular Positioning:
The shot pin assembly, expertly driven by a hydraulic motor, allows the RLA to be rotated with precision to a desired position, ensuring optimal placement.
Locking Mechanism:
Once the RLA reaches the correct position, the shot pin engages with a robust locking mechanism, securing it firmly in place. This prevents any unintended rotation of the RLA, which is crucial for safe and efficient drilling.

Hydraulic Operation:
The shot pin assembly operates hydraulically, with the hydraulic motor precisely controlled by an electric solenoid valve, ensuring smooth functionality.
Multiple Positions:
The RLA can be locked in various indexed positions, offering flexibility and adaptability in managing diverse drilling operations and varying pipe sizes.
Improved Design:
Addressing wear and potential hydraulic leaks in older designs, NOV has innovatively enhanced the design with longer shot pins and reinforced seals, significantly boosting the lifespan and reliability of the shot pin assembly.

Here’s a breakdown of the key components:
Shot Pin: The essential component responsible for the physical engagement and disengagement between the top drive and the drill string.
Sleeve: A robust housing that guides and supports the shot pin, commonly crafted from durable brass for longevity.
Seal Piston: A critical component designed to create a secure seal, effectively preventing fluid leaks.
Rod Seal Assembly: A vital part that sustains a reliable seal around the shot pin, averting fluid leakage and ensuring seamless hydraulic function.