
Sandvik / Tamrock
551 687 73 Shaft Assembly
DD421-60C
| Part Number | 551 687 73 |
| Description | Shaft Assembly |
| Brand | Sandvik (Tamrock) |
| Assembly | Cable Reel |
| Type | Drill Rig Spare Part |
Quick answer
551 687 73 (also written 55168773, 551-687-73, or 551.687.73) is a Sandvik shaft assembly spare part used in the Cable Reel assembly of the Sandvik DD421-60C. Verified compatible with 2 Sandvik machine models including DD421-60C, DT721. Available as an aftermarket replacement drill part from BK Drilling — Turkey-based Sandvik and Epiroc spare parts supplier serving mining contractors worldwide. Quote on request via WhatsApp; typical lead time 3-7 days for stock items.
Part code alternate forms: 55168773, 551 687 73, 551-687-73.
Compatible machines
2
OEM cross-reference
551 687 73
About Sandvik 551 687 73 Shaft Assembly
An essential drivetrain component in the Sandvik DD421-60C, this shaft serves the Cable Reel by reliably transferring torque and rotational motion. Manufactured from high-strength alloy steel, it withstands the continuous mechanical stress of mining and drilling applications.
This is an OEM-compatible aftermarket replacement part for the Sandvik DD421-60C (DD421-60C). Also compatible with Tamrock branded equipment of the same model series. BK Drilling supplies this part with fast worldwide shipping and competitive pricing.
Frequently asked questions
What are signs of shaft wear in drilling machines?
Symptoms include increased vibration during operation, unusual noise from the drivetrain, visible wear marks or scoring on shaft surfaces, and difficulty maintaining proper alignment of connected components.








