Catalog: Stalroc Industrial
Browse heavy-duty drilling components engineered for extreme environments.
Idler Wheel
The idler wheel, part 332 779 38, supports a moving belt or track chain without driving it, riding on an internal bearing that usually determines its actual service life more than the wheel's outer surface does. A wheel that no longer rotates freely converts rolling contact back into sliding contact at the point it touches. That single fault can meaningfully shorten the life of the far more expensive track chain or belt running over it, which is why a relatively cheap idler wheel is worth checking by hand rather than leaving in service on the strength of a quick visual look. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and construction contractors.
Idler Wheel
The idler wheel, part 323 405 68, is positioned at a track or belt return run rather than the load-bearing side, so it sees lower direct load but still has to track true to keep the chain or belt from walking sideways. A wheel that has developed a flat spot or wobble here can throw belt alignment off well before the wheel's bearing itself has failed. Because a return-side idler carries less load, it can appear to be running fine on a quick check even while its bearing is well into the wear that will eventually seize it, so it is easy to under-inspect relative to load-bearing idlers. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and construction contractors.
Housing Ring
The housing ring, part 150 774 18, locates a bearing or seal within its bore in a Sandvik housing, holding it square and centered rather than carrying significant load itself. A ring that has been deformed slightly during a previous fit or removal can leave the component it locates sitting a fraction off-center, which is enough to introduce uneven wear on that component over time. Because the ring's job is purely positional, damage to it rarely shows up as a symptom of its own; it shows up later as premature wear on whatever it was meant to keep aligned. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Housing Assembly
The housing assembly, part 150 259 08, encloses and supports a rotating or reciprocating component in Sandvik equipment, and it is supplied as an assembly because its bearing bores and seal faces are machined to each other as a matched set. Fitting a replacement seal or bearing into a housing whose bore has already worn oversize rarely restores the original running clearance, even when the new part is correct. Once a housing joint has been opened and resealed a few times, the gasket face itself is worth checking for flatness, since repeated torquing and removal is what typically wears a sealing surface down rather than anything happening inside the housing. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Hose Reel
The hose reel, part 320 417 08, stores and pays out a hydraulic or water hose on a Sandvik unit under spring or motor-driven tension, and its bearing and spring mechanism wear from the repeated winding cycle rather than from carrying the hose itself. A reel that no longer retracts fully under its own tension is showing spring fatigue well before the reel structure itself fails. A hose that is left to drag rather than being fully retracted picks up far more abrasion and kinking damage than one properly stored on a working reel, so a weak reel mechanism tends to shorten the life of the hose it carries as much as its own. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Hole Screw
The hole screw, part 134 934 18, secures a component through a fixed bore in Sandvik equipment, and while a fastener rarely draws attention the way a pump or bearing does, its thread engagement length and grade are matched to the joint it closes. A generic hardware equivalent can look identical while lacking the fatigue resistance the original part carries. Because fasteners are cheap and quick to fit relative to almost everything else in an overhaul, they get treated as an afterthought, which is exactly where the risk lies: a screw that backs out can let a component shift or come loose entirely, turning a low-cost item into a much larger repair. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and construction contractors.
Gland
The gland, part 150 781 48, retains and compresses the rod seal at the open end of a Sandvik cylinder, and it is what actually holds sealing pressure against the rod rather than the seal alone. A gland that has worn oversize at its bore lets the rod ride slightly off-center on its stroke, and that small misalignment is what wears the rod seal out well ahead of its normal life. Because the gland also acts as the rod's guide bearing in most cylinder designs, wear here tends to show up first as a rod that wobbles slightly at full extension rather than as a leak, with the leak following once the seal itself has been damaged by the misalignment. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Roller Bearing
The roller bearing, part 0509 0223 00, supports a heavier combination of radial and thrust load than a needle or ball bearing of the same size could take, which is why it tends to sit at the more heavily loaded points in a drill's drive train. Because it is built for that higher load, its failure mode is more sudden than gradual: a roller bearing tends to run acceptably until it doesn't, giving less advance warning than a lightly loaded bearing elsewhere in the same machine. That narrower warning window is why roller bearings in this kind of position are usually replaced on a fixed interval rather than run to observed failure. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Screw
Part 3115 0782 10 is a screw used inside an Atlas Copco rock drill, where it sees vibration from the percussion cycle on top of the static clamping load a fastener normally carries. That combination is what makes the original locking feature and thread coating matter more here than on a static joint, since vibration is what actually works a fastener loose over time. A drill that has been through repeated strip-downs is a common place to find a fastener reused past the point its locking feature still functions, which is worth checking during any overhaul rather than assuming it is fine because it still tightens down. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Screw
Part 3147 1479 03 is a screw used to secure a structural joint on Atlas Copco equipment, and while a fastener rarely draws attention the way a pump or bearing does, its material grade and torque rating are chosen specifically for the load path it closes. A generic hardware equivalent can look identical while lacking the fatigue resistance the original part carries. Because fasteners are cheap and quick to fit relative to almost everything else in an overhaul, they get treated as an afterthought, which is exactly where the risk lies: a screw that backs out or shears can let a structural joint shift under load, turning a low-cost item into a much larger repair. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and construction contractors.
Back Head
The back head, part 3115 2063 00, closes the rear of an Atlas Copco rock drill and carries the flushing and control connections, taking the full recoil of every impact the piston delivers. Its threaded joint to the drill body has to stay tight through that repeated shock loading, and once it works loose even slightly, flushing pressure starts leaking past the seal instead of reaching the bit. Wear at the thread or seal face is usually found during a scheduled strip-down rather than from an obvious symptom in the field, since a small leak here is easy to mistake for a problem elsewhere in the flushing circuit. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Accumulator
The accumulator, part 3115 3451 81, smooths out the pressure pulses generated by a rock drill's percussion cycle so the hydraulic circuit feeding it does not see the full shock of every blow. A charge that has bled down loses that damping effect gradually, so the drill keeps running while the circuit around it starts absorbing punishment it was never meant to see directly. Because the loss is gradual, a weak accumulator often gets diagnosed only after hoses or fittings elsewhere in the circuit start failing prematurely, rather than being caught on its own. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.