Sandvik / Tamrock
551 556 69 Cylinder tube
DD321-40
Available — Request Quote| Part Number | 551 556 69 |
| Description | Cylinder tube |
| Brand | Sandvik (Tamrock) |
| Assembly | CYLINDER ASSEMBLY |
| Type | Drill Rig Spare Part |
Quick answer
551 556 69 (also written 55155669 or 551-556-69) is a Sandvik cylinder tube spare part used in the CYLINDER ASSEMBLY assembly of the Sandvik DD320-40. Verified compatible with 3 Sandvik machine models including DD320-40, 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: 55155669, 551 556 69, 551-556-69.
Compatible machines
3
OEM cross-reference
551 556 69
About Sandvik 551 556 69 Cylinder tube
This hydraulic cylinder is a core actuator component in the Sandvik DD320-40, operating within the CYLINDER ASSEMBLY. It converts hydraulic fluid pressure into linear mechanical force for positioning, clamping, or feed operations essential to the drilling process.
This is an OEM-compatible aftermarket replacement part for the Sandvik DD320-40 (DD320-40). 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
When should a hydraulic cylinder be rebuilt or replaced?
Rebuild or replace when you observe fluid leakage past seals, reduced force output, sluggish or inconsistent movement, visible scoring on the cylinder rod, or when the machine cannot maintain required feed pressure during drilling.
