Sandvik / Tamrock
550 511 66a Bushing, Bearing
Rock Drill Spare Part
| Part Number | 550 511 66a |
| Description | Bushing, Bearing |
| Brand | Sandvik (Tamrock) |
| Assembly | GEARBOX |
| Type | Rock Drill Spare Part |
Quick answer
550 511 66a (also written 55051166a, 550-511-66a, or 550.511.66a) is a Sandvik bushing, bearing spare part used in the GEARBOX assembly of the Sandvik DT820. Verified compatible with 2 Sandvik machine models including DT820, RANGER DX500. Used in 3 drifter configurations (HFX5T, HLX5, HLX5T). 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: 55051166a, 550 511 66a, 550-511-66a.
Compatible machines
2
Drifter configurations
3
OEM cross-reference
550 511 66a
Reference image
Available
About Sandvik 550 511 66a Bushing, Bearing
A vital component in the GEARBOX of the Sandvik DT820, this bushing acts as a sacrificial wear element designed to protect more expensive surrounding components. Its precise dimensional tolerances ensure smooth operation and minimal vibration during drilling operations.
This is an OEM-compatible aftermarket replacement part for the Sandvik DT820 (DT820). 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.
