Montabert
GEAR 86511466 — Montabert Compatible
GEAR 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 86511466.
Fill in the quote form for price and stock; we'll get back to you shortly.
What the GEAR does
The rotation gearing converts the rotation motor's output into the torque that turns the drill string. It works against reactive torque coming back from the bit and against the impact pulses passing through the chuck, so tooth loading is far from steady.
Signs it needs replacing
- Rotation that stalls in hard rock at normal pressure
- Knocking or clatter that changes with rotation speed
- Chipped, pitted or stepped tooth flanks
- Metal fragments in the gear housing oil
Before you fit it
Meshing gears are replaced as a pair — a new gear against a worn mating one concentrates load on a few teeth and fails quickly. Check the bearings supporting the gear at the same time, since backlash from a failing bearing is what chips teeth in the first place.
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 GEAR (OEM 86511466) 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.
