Sandvik / Tamrock
552 186 11 PISTON Rod Assembly
DD321-40
| Part Number | 552 186 11 |
| Description | PISTON Rod Assembly |
| Brand | Sandvik (Tamrock) |
| Assembly | Cylinder Assembly |
| Type | Drill Rig Spare Part |
Quick answer
552 186 11 (also written 55218611, 552-186-11, or 552.186.11) is a Sandvik piston rod assembly spare part used in the Cylinder Assembly assembly of the Sandvik DD321-40. Verified compatible with 2 Sandvik machine models including DD321-40, DD321-40C. 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: 55218611, 552 186 11, 552-186-11.
Compatible machines
2
OEM cross-reference
552 186 11
About Sandvik 552 186 11 PISTON Rod Assembly
A critical hydraulic component in the Sandvik DD321-40 percussion mechanism, this piston converts hydraulic pressure into the powerful impact force needed for rock breaking. Located in the Cylinder Assembly, 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 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
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.
