Sandvik / Tamrock
550 540 21b Differential Assembly (No Pinion & Ring Gear)
DD421-60C
| Part Number | 550 540 21b |
| Description | Differential Assembly (No Pinion & Ring Gear) |
| Brand | Sandvik (Tamrock) |
| Assembly | 08 |
| Type | Drill Rig Spare Part |
Quick answer
550 540 21b (also written 55054021b, 550-540-21b, or 550.540.21b) is a Sandvik differential assembly (no pinion & ring gear) spare part used in the 08 assembly of the Sandvik DD421-60C. Verified compatible with 1 Sandvik machine model including DD421-60C. 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: 55054021b, 550 540 21b, 550-540-21b.
Compatible machines
1
OEM cross-reference
550 540 21b
About Sandvik 550 540 21b Differential Assembly (No Pinion & Ring Gear)
This component is part of the 08 assembly in the Sandvik DD421-60C. Maintaining OEM-compatible replacement parts ensures reliable machine performance and minimizes downtime in demanding mining and drilling operations.
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
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.
