Sandvik / Tamrock
550 004 39b Cylinder, Hydraulic
DD321-40
| Part Number | 550 004 39b |
| Description | Cylinder, Hydraulic |
| Brand | Sandvik (Tamrock) |
| Assembly | Rear Module |
| Type | Drill Rig Spare Part |
Quick answer
550 004 39b (also written 55000439b, 550-004-39b, or 550.004.39b) is a Sandvik cylinder, hydraulic spare part used in the Rear Module assembly of the Sandvik DD321-40. Verified compatible with 6 Sandvik machine models including DD320S, DD321-40, 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: 55000439b, 550 004 39b, 550-004-39b.
Compatible machines
6
OEM cross-reference
550 004 39b
About Sandvik 550 004 39b Cylinder, Hydraulic
This hydraulic cylinder is a core actuator component in the Sandvik DD321-40, operating within the Rear Module. 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 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
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.
