Sandvik / Tamrock
770 212 39 Bearing, Roller, Tapered
DL321-7
Available — Request Quote| Part Number | 770 212 39 |
| Description | Bearing, Roller, Tapered |
| Brand | Sandvik (Tamrock) |
| Assembly | Differential Assembly (No Pinion & Ring Gear) |
| Type | Drill Rig Spare Part |
Quick answer
770 212 39 (also written 77021239 or 770-212-39) is a Sandvik bearing, roller, tapered spare part used in the Differential Assembly (No Pinion & Ring Gear) assembly of the Sandvik DL321-7. Verified compatible with 1 Sandvik machine model including DL321-7. 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: 77021239, 770 212 39, 770-212-39.
Compatible machines
1
OEM cross-reference
770 212 39
About Sandvik 770 212 39 Bearing, Roller, Tapered
This high-performance bearing is designed for the Sandvik DL321-7 and serves a critical role in the Differential Assembly (No Pinion & Ring Gear). It supports rotating elements under heavy axial and radial loads typical in underground and surface drilling applications, ensuring smooth and reliable machine operation.
This is an OEM-compatible aftermarket replacement part for the Sandvik DL321-7 (DL321-7). 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 are bearings critical in drilling equipment?
Bearings support rotating shafts and components under extreme loads and vibrations. Failed bearings can cause catastrophic damage to gearboxes, drive trains, and drilling mechanisms, leading to extended downtime and costly repairs.
What causes premature bearing failure in mining equipment?
Common causes include contamination from dust and water ingress, misalignment during installation, excessive loads, inadequate lubrication, and operating beyond rated temperature ranges. Proper sealing and regular lubrication schedules are essential preventive measures.
