Sandvik / Tamrock
551 650 50e Limit bushing
DD421-60C
Available — Request Quote| Part Number | 551 650 50e |
| Description | Limit bushing |
| Brand | Sandvik (Tamrock) |
| Assembly | Cylinder |
| Type | Drill Rig Spare Part |
Quick answer
551 650 50e (also written 55165050e or 551-650-50e) is a Sandvik limit bushing spare part used in the Cylinder assembly of the Sandvik DD421-60C. Verified compatible with 5 Sandvik machine models including DD421-60, DD421-60C, DD422i. 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: 55165050e, 551 650 50e, 551-650-50e.
Compatible machines
5
OEM cross-reference
551 650 50e
About Sandvik 551 650 50e Limit bushing
Engineered for the demanding conditions of the Sandvik DD421-60C, this bushing provides essential support and alignment for rotating shafts and moving components within the Cylinder. 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 DD421-60C (DD421-60C). 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.
