Sandvik / Tamrock
550 120 40 BEARING BUSHING
Rock Drill Spare Part
| Part Number | 550 120 40 |
| Description | BEARING BUSHING |
| Brand | Sandvik (Tamrock) |
| Assembly | HYDRAULIC ROCK DRILL HEX 1 |
| Type | Rock Drill Spare Part |
Quick answer
550 120 40 (also written 55012040, 550-120-40, or 550.120.40) is a Sandvik bearing bushing spare part used in the HYDRAULIC ROCK DRILL HEX 1 assembly of the Sandvik DC122R. Verified compatible with 4 Sandvik machine models including COMMANDO 120 RF, COMMANDO 120R, DC122R. Used in 1 drifter configuration (HEX1). 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: 55012040, 550 120 40, 550-120-40.
Compatible machines
4
Drifter configurations
1
OEM cross-reference
550 120 40
About Sandvik 550 120 40 BEARING BUSHING
Engineered for the demanding conditions of the Sandvik DC122R, this bushing provides essential support and alignment for rotating shafts and moving components within the HYDRAULIC ROCK DRILL HEX 1. Manufactured to OEM specifications, it ensures precise fit and optimal load distribution throughout its operational life.
This is an OEM-compatible aftermarket replacement part for the Sandvik DC122R (DC122R). 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
What does a bushing do in a drilling machine?
A bushing acts as a wear-resistant liner that reduces friction between moving and stationary parts. It protects more expensive components from direct contact wear, extends service intervals, and maintains precise alignment of rotating elements in drilling equipment.
How often should bushings be replaced?
Bushing replacement intervals depend on operating conditions, but typical mining applications require inspection every 500-1000 operating hours. Signs of wear include increased play or vibration, unusual noise, and visible scoring or deformation of the bushing surface.
