Sandvik / Tamrock
551 687 74 Supporting block
DD321-40
| Part Number | 551 687 74 |
| Description | Supporting block |
| Brand | Sandvik (Tamrock) |
| Assembly | Rear support |
| Type | Drill Rig Spare Part |
Quick answer
551 687 74 (also written 55168774, 551-687-74, or 551.687.74) is a Sandvik supporting block spare part used in the Rear support assembly of the Sandvik DD321-40. Verified compatible with 4 Sandvik machine models including DD321-40, DD321-40C, DL421-7C. 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: 55168774, 551 687 74, 551-687-74.
Compatible machines
4
OEM cross-reference
551 687 74
About Sandvik 551 687 74 Supporting block
An essential element of the Rear support in the Sandvik DD321-40, 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 DD321-40 (DD321-40). 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.
