


Sandvik / Tamrock
550 690 78a Punch
Rock Drill Spare Part
| Part Number | 550 690 78a |
| Description | Punch |
| Brand | Sandvik (Tamrock) |
| Assembly | Tool, Special |
| Type | Rock Drill Spare Part |
Quick answer
550 690 78a (also written 55069078a, 550-690-78a, or 550.690.78a) is a Sandvik punch spare part used in the Tool, Special assembly of the Sandvik DT821-SC. Verified compatible with 2 Sandvik machine models including DT821-SC, DT921i. Used in 4 drifter configurations (HFX5T, HLX5, HLX5T). 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: 55069078a, 550 690 78a, 550-690-78a.
Compatible machines
2
Drifter configurations
4
OEM cross-reference
550 690 78a
About Sandvik 550 690 78a Punch
This component is part of the Tool, Special assembly in the Sandvik DT821-SC. 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 DT821-SC (DT821-SC). 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.

