Sandvik / Tamrock
551 857 52b Bushing, Bearing
DI550
| Part Number | 551 857 52b |
| Description | Bushing, Bearing |
| Brand | Sandvik (Tamrock) |
| Assembly | Rotation head |
| Type | Drill Rig Spare Part |
Quick answer
551 857 52b (also written 55185752b, 551-857-52b, or 551.857.52b) is a Sandvik bushing, bearing spare part used in the Rotation head assembly of the Sandvik DI550. Verified compatible with 2 Sandvik machine models including DI550, LEOPARD DI550. 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: 55185752b, 551 857 52b, 551-857-52b.
Compatible machines
2
OEM cross-reference
551 857 52b
About Sandvik 551 857 52b Bushing, Bearing
Engineered for the demanding conditions of the Sandvik DI550, this bushing provides essential support and alignment for rotating shafts and moving components within the Rotation head. 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 DI550 (DI550). 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.