


Sandvik / Tamrock
550 891 57 Orifice
DT821-C
| Part Number | 550 891 57 |
| Description | Orifice |
| Brand | Sandvik (Tamrock) |
| Assembly | Pressure switch |
| Type | Drill Rig Spare Part |
Quick answer
550 891 57 (also written 55089157, 550-891-57, or 550.891.57) is a Sandvik orifice spare part used in the Pressure switch assembly of the Sandvik DT821-C. Verified compatible with 9 Sandvik machine models including DS510-C, DS511-C, DT1330i. 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: 55089157, 550 891 57, 550-891-57.
Compatible machines
9
OEM cross-reference
550 891 57
About Sandvik 550 891 57 Orifice
An essential element of the Pressure switch 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.






