


Sandvik / Tamrock
550 642 79a Orifice adapter
Rock Drill Spare Part
| Part Number | 550 642 79a |
| Description | Orifice adapter |
| Brand | Sandvik (Tamrock) |
| Assembly | Rock Drill, Hydraulic |
| Type | Rock Drill Spare Part |
Quick answer
550 642 79a (also written 55064279a, 550-642-79a, or 550.642.79a) is a Sandvik orifice adapter spare part used in the Rock Drill, Hydraulic assembly of the Sandvik DS411-C. Verified compatible with 4 Sandvik machine models including COMMANDO DC300Ri, DC302R, DS411. Used in 3 drifter configurations (HE300, HL300, HL300S). 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: 55064279a, 550 642 79a, 550-642-79a.
Compatible machines
4
Drifter configurations
3
OEM cross-reference
550 642 79a
About Sandvik 550 642 79a Orifice adapter
This component is part of the Rock Drill, Hydraulic assembly in the Sandvik DS411-C. Maintaining OEM-compatible replacement parts ensures reliable machine performance and minimizes downtime in demanding mining and drilling operations.
This is an OEM-compatible aftermarket replacement part for the Sandvik DS411-C (DS411-C). 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.



