Sandvik / Tamrock
551 687 91 Mounting plate
DD321-40
| Part Number | 551 687 91 |
| Description | Mounting plate |
| Brand | Sandvik (Tamrock) |
| Assembly | STEP BOX |
| Type | Drill Rig Spare Part |
Quick answer
551 687 91 (also written 55168791, 551-687-91, or 551.687.91) is a Sandvik mounting plate spare part used in the STEP BOX assembly of the Sandvik DD321-40. Verified compatible with 3 Sandvik machine models including DD321-40, DD321-40C, DL421-7C. 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: 55168791, 551 687 91, 551-687-91.
Compatible machines
3
OEM cross-reference
551 687 91
About Sandvik 551 687 91 Mounting plate
Part of the STEP BOX in the Sandvik DD321-40, this plate provides essential mounting, wear protection, or structural support. Regular inspection for wear, cracking, or deformation helps prevent unexpected equipment failure during drilling 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
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.
