Sandvik / Tamrock
551 529 97a Bushing, Rotation
Rock Drill Spare Part
| Part Number | 551 529 97a |
| Description | Bushing, Rotation |
| Brand | Sandvik (Tamrock) |
| Assembly | Gearbox |
| Type | Rock Drill Spare Part |
Quick answer
551 529 97a (also written 55152997a, 551-529-97a, or 551.529.97a) is a Sandvik bushing, rotation spare part used in the Gearbox 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: 55152997a, 551 529 97a, 551-529-97a.
Compatible machines
13
Drifter configurations
3
OEM cross-reference
551 529 97a
Reference image
Available
About Sandvik 551 529 97a Bushing, Rotation
This precision-machined bushing is a critical wear component in the Sandvik DD321-40 drilling system. Bushings reduce friction between rotating and stationary parts, significantly extending the service life of the entire Gearbox assembly. Regular inspection and timely replacement of worn bushings prevents costly damage to mating components and reduces unplanned downtime in mining operations.
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.
