Sandvik / Tamrock
552 250 91b Bushing, Bearing
Rock Drill Spare Part
| Part Number | 552 250 91b |
| Description | Bushing, Bearing |
| Brand | Sandvik (Tamrock) |
| Assembly | Rock Drill |
| Type | Rock Drill Spare Part |
Quick answer
552 250 91b (also written 55225091b, 552-250-91b, or 552.250.91b) is a Sandvik bushing, bearing spare part used in the Rock Drill assembly of the Sandvik DD321-40. Verified compatible with 13 Sandvik machine models including DD321-40, DD321-40C, DD421-60. Used in 3 drifter configurations (HLX5, RD520, RD525). 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: 55225091b, 552 250 91b, 552-250-91b.
Compatible machines
13
Drifter configurations
3
OEM cross-reference
552 250 91b
Reference image
Available
About Sandvik 552 250 91b Bushing, Bearing
Engineered for the demanding conditions of the Sandvik DD321-40, this bushing provides essential support and alignment for rotating shafts and moving components within the Rock Drill. 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 DD321-40 (DD321-40). 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
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.
