Sandvik / Tamrock
550 869 78 PISTON rod
DL421-7C
Available — Request Quote| Part Number | 550 869 78 |
| Description | PISTON rod |
| Brand | Sandvik (Tamrock) |
| Assembly | CYLINDER |
| Type | Drill Rig Spare Part |
Quick answer
550 869 78 (also written 55086978 or 550-869-78) is a Sandvik piston rod spare part used in the CYLINDER assembly of the Sandvik DL421-7C. Verified compatible with 1 Sandvik machine model including 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: 55086978, 550 869 78, 550-869-78.
Compatible machines
1
OEM cross-reference
550 869 78
About Sandvik 550 869 78 PISTON rod
This piston is a key element of the CYLINDER in the Sandvik DL421-7C. It operates under extreme cyclic loading and high-pressure hydraulic conditions. Maintaining OEM-specification pistons ensures optimal percussion energy transfer and maximizes rock-breaking performance.
This is an OEM-compatible aftermarket replacement part for the Sandvik DL421-7C (DL421-7C). 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.