Sandvik
BEARING ASSY 551 552 25 / 55155225 — Sandvik Compatible
BEARING ASSY is a high-strength aftermarket spare part fully compatible with Sandvik hydraulic drifters and rock drills. Precision CNC-machined to original-part tolerances. Contact us for stock and delivery on OEM number 551 552 25.
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BEARING ASSY — OEM 551 552 25 / 55155225
- OEM Number
- 551 552 25
- Also written as
- 55155225
- Compatible Brand
- Sandvik
- Part Type
- Drifter
What the BEARING ASSY does
Bearings carry the rotation loads in the drifter's rotation gear and in the feed and boom assemblies. On a percussion machine they take a duty most bearings never see: steady rotational load with an impact pulse superimposed on it thousands of times a minute.
Signs it needs replacing
- Rumble, growl or a rising whine from the rotation housing
- Detectable radial or axial play in the rotation shaft
- Local heat at the bearing housing after a short run
- Metallic glitter in the drained oil
Before you fit it
Fit bearings clean, square and to the correct preload — most premature failures are fitting damage, not manufacturing defects. Replace the shaft seals at the same time; a bearing that failed because water reached it will fail again if the seal is reused.
General guidance for this class of component. Always work to the torque figures, clearances and service intervals in your machine's own manual.
About This Part
Which machines does BEARING ASSY (OEM 551 552 25) fit?
It is used on Sandvik hydraulic rock drills and drifters. Models we already carry parts for: HL1560 ROCK DRILL (DRIFTER), HL300 ROCK DRILL (DRIFTER), HL710 ROCK DRILL (DRIFTER), HL820T ROCK DRILL (DRIFTER), RD314 ROCK DRILL (DRIFTER), RD525 ROCK DRILL (DRIFTER). If yours is not listed, send us the OEM number and we will confirm the fit.
How should I write the OEM number?
This part number is written two ways: 551 552 25 (spaced) and 55155225 (unspaced). Both refer to the same part, and the site search finds either spelling.
Is this an original Sandvik part?
No. This is an aftermarket part manufactured by KY Rock Drill and CNC-machined to original-part tolerances. We are not affiliated with or an authorised dealer for Sandvik; the OEM number is quoted only to identify compatibility.
