


Sandvik / Tamrock
550 783 91a ADAPTER
DL421-15C
| Part Number | 550 783 91a |
| Description | ADAPTER |
| Brand | Sandvik (Tamrock) |
| Assembly | Electrical Assembly |
| Type | Drill Rig Spare Part |
Quick answer
550 783 91a (also written 55078391a, 550-783-91a, or 550.783.91a) is a Sandvik adapter spare part used in the Electrical Assembly assembly of the Sandvik DL421-15C. Verified compatible with 2 Sandvik machine models including DB120, DL421-15C. 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: 55078391a, 550 783 91a, 550-783-91a.
Compatible machines
2
OEM cross-reference
550 783 91a
About Sandvik 550 783 91a ADAPTER
An essential element of the Electrical Assembly in the Sandvik DL421-15C, 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 DL421-15C (DL421-15C). 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.




