


Sandvik / Tamrock
551 533 50 Guide Ring, PISTON Rod
DD320-40
Available — Request Quote| Part Number | 551 533 50 |
| Description | Guide Ring, PISTON Rod |
| Brand | Sandvik (Tamrock) |
| Assembly | CYLINDER ASSEMBLY |
| Type | Drill Rig Spare Part |
Quick answer
551 533 50 (also written 55153350 or 551-533-50) is a Sandvik guide ring, piston rod spare part used in the CYLINDER ASSEMBLY assembly of the Sandvik DD320-40. Verified compatible with 14 Sandvik machine models including DD320-40, 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: 55153350, 551 533 50, 551-533-50.
Compatible machines
14
OEM cross-reference
551 533 50
About Sandvik 551 533 50 Guide Ring, PISTON Rod
This piston is a key element of the CYLINDER ASSEMBLY in the Sandvik DD320-40. 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 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
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.




