Sandvik / Tamrock
551 661 12b Valve Assembly, Spool, Directional
DD321-40
| Part Number | 551 661 12b |
| Description | Valve Assembly, Spool, Directional |
| Brand | Sandvik (Tamrock) |
| Assembly | Console Assembly, Operator's |
| Type | Drill Rig Spare Part |
Quick answer
551 661 12b (also written 55166112b, 551-661-12b, or 551.661.12b) is a Sandvik valve assembly, spool, directional spare part used in the Console Assembly, Operator's assembly of the Sandvik DD321-40. Verified compatible with 3 Sandvik machine models including DD321-40, DD321-40C, DD421-60C. 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: 55166112b, 551 661 12b, 551-661-12b.
Compatible machines
3
OEM cross-reference
551 661 12b
About Sandvik 551 661 12b Valve Assembly, Spool, Directional
This valve controls fluid flow and pressure within the hydraulic or pneumatic system of the Sandvik DD321-40. Part of the Console Assembly, Operator's, it ensures precise regulation of drilling parameters including feed force, percussion frequency, and rotation speed.
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.
