Catalog: Stalroc Industrial
Browse heavy-duty drilling components engineered for extreme environments.
Valve Cover
The valve cover, part 3115 2077 03, encloses the valve chamber in a drifter's percussion circuit, holding internal pressure while keeping external dust and moisture away from a component that controls how the whole percussion cycle is timed. Because the cover is a static housing rather than a moving part, it is easy to assume it never needs attention, but a cover that has lost its sealing face lets contamination reach the valve it protects far more readily than any other entry point in the assembly. Checking the cover's sealing face whenever the valve beneath it is serviced costs little against the risk of contaminating a freshly rebuilt valve through a cover nobody inspected. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Seal Housing
The seal housing, part 3115 2766 80, holds the seal stack in the correct order and orientation at its position in the drifter, which matters because a wiper, primary seal and back-up ring fitted out of sequence fail far sooner than the same seals fitted correctly. A housing that has taken a knock or corroded slightly changes that seating geometry even when the seals themselves are new, which is a common reason a freshly reseal drifter still leaks at the same point. Inspecting the housing bore and face, not just replacing the seals inside it, is what actually resolves a repeat leak at this position. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Overhaul Kit
The overhaul kit, part 3115 9242 97, covers the wear parts for a full drifter strip-down rather than one stage of it, spanning seals, bushings, guides and rings across the whole machine instead of a single mechanism within it. Ordering to that scope from a parts book, item by item, is where a full overhaul most often overruns its budget of time, usually on components that only become obviously needed once the machine is already in pieces. Because the kit is scoped to the whole drifter, it is worth confirming against the specific model and generation being overhauled rather than assumed interchangeable with a kit for a similar-looking machine. Stalroc supplies this Atlas Copco reference against its part number and exports worldwide to drilling contractors.
Flushing Head
The flushing head, part 3115 2121 00, connects the drifter to the rotating shank and carries flushing medium through that joint under both pressure and rotation at once, which is a harder duty than a static flushing connection sees elsewhere in the circuit. Wear at this rotating interface shows up first as flushing medium escaping past the joint rather than reaching the bit, which crews sometimes mistake for a supply problem further back in the circuit. Checking the joint itself before tracing the fault further upstream saves time on a symptom that is more often local to this connection than it first appears. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Connection
The connection, part 3115 1938 00, couples two sections of a drifter's hydraulic circuit at a joint that is disturbed every time the machine is serviced, which makes it more exposed to thread damage and seal wear than a connection nobody ever opens. Cross-threading on reassembly is the most common way a fitting like this actually fails, and it usually shows up as a slow weep at the joint rather than as a fitting that visibly will not tighten. Renewing the sealing face at this connection whenever it is disturbed, rather than assuming the old one will seat again, is the more reliable habit. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Side Bolt
The side bolt, part 3115 2113 00, clamps two housings together from the side of a drifter rather than through the main body, carrying shear load across the joint face in addition to the clamping tension the bolt itself provides. Because the load is shear as well as tension, a side bolt that has stretched slightly lets the housings creep against each other under vibration even while the bolt still measures within its length tolerance. Side bolts are normally renewed as a full set rather than one at a time, since a single stretched bolt in an otherwise fresh set concentrates load onto itself and stretches faster than it would have as part of a uniformly worn set. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Ring
The ring, part 862 202 414, seats into a machined groove inside a Montabert breaker or drill to seal or retain against internal pressure, and its cross-section is matched precisely enough to that groove that a visually close substitute rarely holds the same fit. Once it loses its original profile through wear, the pressure or retention it was providing degrades before the ring itself looks obviously worn. Because the wear is dimensional rather than visible, checking against the manufacturer reference before ordering is more reliable than judging a ring by eye. Stalroc quotes this Montabert reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Stop Piston
The stop piston, part 866 116 39, arrests the working piston's travel at the end of its stroke in a Montabert breaker, absorbing the impact of that arrest on every cycle rather than transmitting it onward the way the main piston does. Because it takes that shock directly and repeatedly, it wears from a different mechanism than the piston it stops, and the two are not a reliable guide to each other's condition. A stop piston that has lost material at its stopping face lets the main piston travel slightly further than designed, which shows up as harsher operation before it shows up as a measurable fault. Stalroc quotes this Montabert reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Driver
The driver, part 866 059 20, transmits rotational drive inside a Montabert breaker or drill, sitting in a chain where backlash at one joint adds to the next rather than staying contained. A driver with worn splines does not slip cleanly; it hammers on every reversal instead, and that hammering is what damages the components either side of it rather than the driver alone. Because it works as part of a chain, it is usually renewed alongside the components it drives during an overhaul rather than replaced on its own. Stalroc quotes this Montabert reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Front
The front head, part 863 533 56, forms the working end of a Montabert breaker, carrying the components that guide and retain the tool while impact energy passes through them on every blow. It is where the machine meets its consumable, and the accuracy it holds determines how much of that energy actually reaches the tool rather than being lost in the front end. Because this end takes the abrasion and shock of direct ground contact, it is normally assessed alongside the bushings and retaining pin it carries rather than inspected on its own. Stalroc quotes this Montabert reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Guide
The guide, part 863 450 22, keeps the piston travelling true through its stroke in a Montabert breaker, holding alignment against the side loads that percussion inevitably produces. A guide that has worn lets the piston work slightly off axis, and the consequences of that show up downstream as uneven wear on the tool and bushings rather than as anything obvious at the guide itself. Because several other faults produce similar symptoms, guides are normally checked and renewed during scheduled overhaul rather than diagnosed alone from falling performance. Stalroc quotes this Montabert reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Cover
The cover, part 863 247 38, closes an internal chamber on a Montabert breaker, retaining pressure while keeping dust and moisture away from the components sealed beneath it. Being a static housing rather than a moving part, it is easy to assume it never needs attention, but a cover that has lost its sealing face lets contamination reach what it protects more directly than any other entry point in the assembly. Checking the cover's sealing face whenever the chamber beneath it is opened costs little against the risk of contaminating freshly serviced components through a cover nobody inspected. Stalroc quotes this Montabert reference by part number and exports worldwide to mining, quarrying, and drilling contractors.