Sandvik / Tamrock
550 121 65a Bearing, Needle
Rock Drill Spare Part
| Part Number | 550 121 65a |
| Description | Bearing, Needle |
| Brand | Sandvik (Tamrock) |
| Assembly | Service Kit |
| Type | Rock Drill Spare Part |
Quick answer
550 121 65a (also written 55012165a, 550-121-65a, or 550.121.65a) is a Sandvik bearing, needle spare part used in the Service Kit assembly of the Sandvik DB120. Verified compatible with 3 Sandvik machine models including Commando DC130Ri, DB120, DC120. Used in 2 drifter configurations (HEX1, HLX1). 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: 55012165a, 550 121 65a, 550-121-65a.
Compatible machines
3
Drifter configurations
2
OEM cross-reference
550 121 65a
About Sandvik 550 121 65a Bearing, Needle
Precision-manufactured for the Sandvik DB120, this bearing component in the Service Kit provides reliable rotational support even under the harsh vibration and impact conditions of rock drilling. Timely replacement prevents cascading damage to adjacent drivetrain components.
This is an OEM-compatible aftermarket replacement part for the Sandvik DB120 (DB120). 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.
