


Sandvik / Tamrock
551 837 59 Reducer, Tube End
DD321-40
| Part Number | 551 837 59 |
| Description | Reducer, Tube End |
| Brand | Sandvik (Tamrock) |
| Assembly | Meter, Flow |
| Type | Drill Rig Spare Part |
Quick answer
551 837 59 (also written 55183759, 551-837-59, or 551.837.59) is a Sandvik reducer, tube end spare part used in the Meter, Flow assembly of the Sandvik DD321-40. Verified compatible with 1 Sandvik machine model including DD321-40. 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: 55183759, 551 837 59, 551-837-59.
Compatible machines
1
OEM cross-reference
551 837 59
About Sandvik 551 837 59 Reducer, Tube End
An essential element of the Meter, Flow 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.







