


Sandvik / Tamrock
550 443 77 Nut, Lock
DS410
Available — Request Quote| Part Number | 550 443 77 |
| Description | Nut, Lock |
| Brand | Sandvik (Tamrock) |
| Assembly | DRIVING MOTOR AND GEARBOX ASSE |
| Type | Drill Rig Spare Part |
Quick answer
550 443 77 (also written 55044377 or 550-443-77) is a Sandvik nut, lock spare part used in the DRIVING MOTOR AND GEARBOX ASSE assembly of the Sandvik DX700. Verified compatible with 34 Sandvik machine models including AXERA 6-240, AXERA 7-240, AXERA 8-290. 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: 55044377, 550 443 77, 550-443-77.
Compatible machines
34
OEM cross-reference
550 443 77
About Sandvik 550 443 77 Nut, Lock
Designed for the demanding environment of the Sandvik DX700, this fastening component secures critical elements within the DRIVING MOTOR AND GEARBOX ASSE. Mining equipment fasteners are subject to strict torque specifications and material requirements to maintain structural safety during operation.
This is an OEM-compatible aftermarket replacement part for the Sandvik DX700 (DX700). 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
Why use OEM-compatible parts for Sandvik drilling equipment?
OEM-compatible parts are manufactured to the same dimensional tolerances and material specifications as original components, ensuring proper fit, reliable performance, and maintaining the designed safety margins of the drilling machine.





