


Sandvik / Tamrock
550 859 16 Tube, Cylinder
DD320-40
Available — Request Quote| Part Number | 550 859 16 |
| Description | Tube, Cylinder |
| Brand | Sandvik (Tamrock) |
| Assembly | CYLINDER |
| Type | Drill Rig Spare Part |
Quick answer
550 859 16 (also written 55085916 or 550-859-16) is a Sandvik tube, cylinder spare part used in the CYLINDER assembly of the Sandvik DD320-40. Verified compatible with 14 Sandvik machine models including DD320-40, DD320S, DD321-40. 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: 55085916, 550 859 16, 550-859-16.
Compatible machines
14
OEM cross-reference
550 859 16
About Sandvik 550 859 16 Tube, Cylinder
Engineered for the Sandvik DD320-40, this cylinder is part of the CYLINDER and provides precise hydraulic actuation under the heavy loads and harsh conditions of mining operations. Cylinder rebuild or replacement restores full force output and positional accuracy.
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.






