


Sandvik / Tamrock
550 122 64 PILOT CYLINDER
Rock Drill Spare Part
| Part Number | 550 122 64 |
| Description | PILOT CYLINDER |
| Brand | Sandvik (Tamrock) |
| Assembly | HYDRAULIC ROCK DRILL HEX 1 |
| Type | Rock Drill Spare Part |
Quick answer
550 122 64 (also written 55012264, 550-122-64, or 550.122.64) is a Sandvik pilot cylinder spare part used in the HYDRAULIC ROCK DRILL HEX 1 assembly of the Sandvik COMMANDO 120R. Verified compatible with 3 Sandvik machine models including COMMANDO 120 RF, COMMANDO 120R, LİNER 100. Used in 1 drifter configuration (HEX1). 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: 55012264, 550 122 64, 550-122-64.
Compatible machines
3
Drifter configurations
1
OEM cross-reference
550 122 64
About Sandvik 550 122 64 PILOT CYLINDER
This hydraulic cylinder is a core actuator component in the Sandvik COMMANDO 120R, operating within the HYDRAULIC ROCK DRILL HEX 1. 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 COMMANDO 120R (COMMANDO 120R). 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.

