Sandvik / Tamrock
550 129 10a Ring, PISTON
DD321-40
| Part Number | 550 129 10a |
| Description | Ring, PISTON |
| Brand | Sandvik (Tamrock) |
| Assembly | Jack |
| Type | Drill Rig Spare Part |
Quick answer
550 129 10a (also written 55012910a, 550-129-10a, or 550.129.10a) is a Sandvik ring, piston spare part used in the Jack assembly of the Sandvik DX700. Verified compatible with 20 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: 55012910a, 550 129 10a, 550-129-10a.
Compatible machines
20
OEM cross-reference
550 129 10a
About Sandvik 550 129 10a Ring, PISTON
This piston is a key element of the Jack in the Sandvik DX700. 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 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.
