


Sandvik / Tamrock
BG 003 902 66a Rod, PISTON
DD422i
| Part Number | BG 003 902 66a |
| Description | Rod, PISTON |
| Brand | Sandvik (Tamrock) |
| Assembly | Jack |
| Type | Drill Rig Spare Part |
Quick answer
BG 003 902 66a (also written BG00390266a, BG-003-902-66a, or BG.003.902.66a) is a Sandvik rod, piston spare part used in the Jack assembly of the Sandvik DD422i. Verified compatible with 1 Sandvik machine model including DD422i. 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: BG00390266a, BG 003 902 66a, BG-003-902-66a.
Compatible machines
1
OEM cross-reference
BG 003 902 66a
About Sandvik BG 003 902 66a Rod, PISTON
A critical hydraulic component in the Sandvik DD422i percussion mechanism, this piston converts hydraulic pressure into the powerful impact force needed for rock breaking. Located in the Jack, 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 DD422i (DD422i). 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.


