


Sandvik / Tamrock
551 745 51 PISTON
DS422i-7C
| Part Number | 551 745 51 |
| Description | PISTON |
| Brand | Sandvik (Tamrock) |
| Assembly | Brake Housing Assembly |
| Type | Drill Rig Spare Part |
Quick answer
551 745 51 (also written 55174551, 551-745-51, or 551.745.51) is a Sandvik piston spare part used in the Brake Housing Assembly assembly of the Sandvik DS422i-7C. Verified compatible with 1 Sandvik machine model including DS422i-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: 55174551, 551 745 51, 551-745-51.
Compatible machines
1
OEM cross-reference
551 745 51
About Sandvik 551 745 51 PISTON
This piston is a key element of the Brake Housing Assembly in the Sandvik DS422i-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 DS422i-7C (DS422i-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.


