Sandvik / Tamrock
551 818 78b Washer, Retaining
DI550
| Part Number | 551 818 78b |
| Description | Washer, Retaining |
| Brand | Sandvik (Tamrock) |
| Assembly | Mounting |
| Type | Drill Rig Spare Part |
Quick answer
551 818 78b (also written 55181878b, 551-818-78b, or 551.818.78b) is a Sandvik washer, retaining spare part used in the Mounting assembly of the Sandvik DI550. Verified compatible with 1 Sandvik machine model including 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: 55181878b, 551 818 78b, 551-818-78b.
Compatible machines
1
OEM cross-reference
551 818 78b
About Sandvik 551 818 78b Washer, Retaining
This fastener is used in the Mounting of the Sandvik DI550. High-strength fasteners in drilling equipment must withstand extreme vibration, cyclic loading, and environmental exposure. Using OEM-specification fasteners ensures proper clamping force and joint integrity in critical assemblies.
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
Why use OEM-compatible parts for Sandvik drilling equipment?
OEM-compatible parts are manufactured to the same dimensional tolerances and material specifications as original components, ensuring proper fit, reliable performance, and maintaining the designed safety margins of the drilling machine.