Sandvik / Tamrock
551 687 78a Roller
DD321-40
| Part Number | 551 687 78a |
| Description | Roller |
| Brand | Sandvik (Tamrock) |
| Assembly | Mounting |
| Type | Drill Rig Spare Part |
Quick answer
551 687 78a (also written 55168778a, 551-687-78a, or 551.687.78a) is a Sandvik roller spare part used in the Mounting assembly of the Sandvik DX700. Verified compatible with 18 Sandvik machine models including DD320S, DD321-40, DD321-40C. 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: 55168778a, 551 687 78a, 551-687-78a.
Compatible machines
18
OEM cross-reference
551 687 78a
About Sandvik 551 687 78a Roller
An essential element of the Mounting in the Sandvik DX700, 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 DX700 (DX700). 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.
