


Sandvik / Tamrock
550 159 30 Sighting Unit
DT821-C
| Part Number | 550 159 30 |
| Description | Sighting Unit |
| Brand | Sandvik (Tamrock) |
| Assembly | AIRMING UNIT ASSY |
| Type | Drill Rig Spare Part |
Compatibility
Machine Models
Quick answer
550 159 30 (also written 55015930, 550-159-30, or 550.159.30) is a Sandvik sighting unit spare part used in the AIRMING UNIT ASSY assembly of the Sandvik DT821-C. Verified compatible with 9 Sandvik machine models including AXERA T08 S-290C, AXERA T11 DATA-315 C, AXERA T12 DATA-315 C. 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: 55015930, 550 159 30, 550-159-30.
Compatible machines
9
OEM cross-reference
550 159 30
About Sandvik 550 159 30 Sighting Unit
An essential element of the AIRMING UNIT ASSY in the Sandvik DT821-C, this part is designed to meet the exacting standards required for underground and surface drilling equipment. Timely replacement prevents costly cascading failures in critical machine systems.
This is an OEM-compatible aftermarket replacement part for the Sandvik DT821-C (DT821-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.






