


Sandvik / Tamrock
551 638 61c Cylinder
DX780
| Part Number | 551 638 61c |
| Description | Cylinder |
| Brand | Sandvik (Tamrock) |
| Assembly | Jack |
| Type | Drill Rig Spare Part |
Quick answer
551 638 61c (also written 55163861c, 551-638-61c, or 551.638.61c) is a Sandvik cylinder spare part used in the Jack assembly of the Sandvik DX800. Verified compatible with 2 Sandvik machine models including DX780, DX800. 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: 55163861c, 551 638 61c, 551-638-61c.
Compatible machines
2
OEM cross-reference
551 638 61c
About Sandvik 551 638 61c Cylinder
This hydraulic cylinder is a core actuator component in the Sandvik DX800, operating within the Jack. 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 DX800 (DX800). 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.







