Montabert
RETAINER CHUCK 86398849 — Montabert Compatible
RETAINER CHUCK is a high-strength aftermarket spare part fully compatible with Montabert hydraulic drifters and rock drills. Precision CNC-machined to original-part tolerances. Contact us for stock and delivery on OEM number 86398849.
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RETAINER CHUCK — OEM 86398849
- OEM Number
- 86398849
- Compatible Brand
- Montabert
- Part Type
- Drifter
What the RETAINER CHUCK does
The chuck assembly grips the shank adapter and transmits rotation to it while allowing the shank to slide axially under percussion. It is the interface where rotary torque and reciprocating impact meet, which makes it one of the most heavily loaded assemblies in the drifter.
Signs it needs replacing
- Shank adapter slipping or free-spinning under load
- Rounded or hammered splines on either the chuck or the shank
- Rotation stalling in hard rock at normal hydraulic pressure
- Rattle or knock from the front of the drifter under rotation
Before you fit it
Chuck and shank adapter wear as a pair. Fitting a new chuck onto a worn shank rounds the new splines quickly, so inspect or replace both together and check the chuck bushing at the same time.
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 RETAINER CHUCK (OEM 86398849) fit?
It is used on Montabert hydraulic rock drills and drifters. Models we already carry parts for: HC 25 ROCK DRILL (DRIFTER). If yours is not listed, send us the OEM number and we will confirm the fit.
Is this an original Montabert 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 Montabert; the OEM number is quoted only to identify compatibility.
