Sandvik / Tamrock
777 942 05a PISTON PUMP
DD320-40
| Part Number | 777 942 05a |
| Description | PISTON PUMP |
| Brand | Sandvik (Tamrock) |
| Assembly | Power pack assembly |
| Type | Drill Rig Spare Part |
Quick answer
777 942 05a (also written 77794205a, 777-942-05a, or 777.942.05a) is a Sandvik piston pump spare part used in the Power pack assembly assembly of the Sandvik DD320-40. Verified compatible with 7 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: 77794205a, 777 942 05a, 777-942-05a.
Compatible machines
7
OEM cross-reference
777 942 05a
About Sandvik 777 942 05a PISTON PUMP
A critical hydraulic component in the Sandvik DD320-40 percussion mechanism, this piston converts hydraulic pressure into the powerful impact force needed for rock breaking. Located in the Power pack assembly, 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 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.
