


Sandvik / Tamrock
550 216 66a PISTON ROD
DL421-15C
Available — Request Quote| Part Number | 550 216 66a |
| Description | PISTON ROD |
| Brand | Sandvik (Tamrock) |
| Assembly | Cylinder |
| Type | Drill Rig Spare Part |
Quick answer
550 216 66a (also written 55021666a or 550-216-66a) is a Sandvik piston rod spare part used in the Cylinder assembly of the Sandvik DX700. Verified compatible with 5 Sandvik machine models including DL321-7, DL421-15C, DL421-7C. 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: 55021666a, 550 216 66a, 550-216-66a.
Compatible machines
5
OEM cross-reference
550 216 66a
About Sandvik 550 216 66a PISTON ROD
A critical hydraulic component in the Sandvik DX700 percussion mechanism, this piston converts hydraulic pressure into the powerful impact force needed for rock breaking. Located in the Cylinder, worn pistons cause reduced penetration rate, increased energy consumption, and decreased overall drilling efficiency.
This is an OEM-compatible aftermarket replacement part for the Sandvik DX700 (DX700). 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
How does a worn piston affect drilling performance?
A worn piston reduces percussion energy transfer, decreasing penetration rate and increasing the time and energy required to drill each hole. This directly impacts productivity and operating costs in mining operations.

