Catalog: Stalroc Industrial
Browse heavy-duty drilling components engineered for extreme environments.
Bushing
The bushing, part 092 564 78, is a sacrificial sleeve that carries rotating or oscillating load so that the surrounding housing bore does not wear directly, and it is deliberately the softer of the two mating surfaces. Once its clearance opens up beyond tolerance, the load it was protecting the housing from starts reaching the housing itself. Because the bushing wears from the inside out, play can develop well before any wear is visible from outside the assembly, which is why clearance is usually checked by measurement rather than by eye during scheduled service. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Diaphgram
The diaphragm, part 092 602 98, forms a flexible seal that separates two chambers in a Sandvik assembly while still allowing it to flex with every operating cycle, so its material has to resist fatigue cracking as much as it resists the fluid or pressure it is sealing. A diaphragm that has gone stiff with age can hold pressure fine at rest yet crack the moment it is put back into cyclic service. Failure is usually sudden rather than gradual, since a small crack in a flexing membrane propagates quickly once it starts, so diaphragms are typically replaced on schedule rather than run until visible damage appears. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Housing Assembly
The housing assembly, part BG011 271 13, is the structural enclosure that locates and supports the internal components of a Sandvik unit, holding bearing bores and mating faces to the tolerances the rest of the assembly depends on. Once a housing bore has worn oversize or a mounting face has been damaged, every component seated in it inherits that error. Because the housing is the reference point the rest of the assembly is built around, damage to it is often diagnosed only after repeated premature failures of the parts installed inside, rather than being caught directly. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Rotation Shaft
The rotation shaft, part BG009 175 93, transmits rotational load through Sandvik equipment under torsional stress and whatever bending load any misalignment in the system adds on top. Fatigue in a shaft develops slowly through microscopic cracking, so a shaft nearing the end of its life can look completely serviceable right up until sudden fracture. Alignment is the biggest factor in how long a shaft actually lasts, and shaft failures in the field are so often accompanied by worn bearings that diagnosing one without checking the other risks repeating the failure with the replacement. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Distributor
The distributor, part BG008 597 94, routes hydraulic or air flow to the correct internal passage in sequence as a Sandvik unit cycles, and its internal clearances are held tight enough that even light wear lets flow bypass into the wrong passage. That kind of internal leakage rarely stops the unit outright, it just quietly steals pressure and slows the cycle down. Because the symptom looks like general sluggishness rather than a clear fault, a worn distributor is often mistaken for a problem elsewhere in the circuit until it is checked directly. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Bearing Assembly
The bearing assembly, part BG008 007 28, carries rotating load inside a Sandvik unit and is supplied as a matched assembly because its races and rolling elements are set to a specific internal clearance during manufacture. Fitting a new bearing element against a worn race, or guessing at the clearance during reassembly, undermines the load rating the assembly is designed to. Bearing wear tends to accelerate once it starts, since play under load increases impact loading with every revolution, so a bearing that has begun to show noise or heat is usually much closer to failure than its remaining service hours would suggest. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Seal Kit
The seal kit, part 887 929 79, contains the full set of seals for a single overhaul of a Sandvik cylinder or valve, and is sold as a set because a seal that still looks intact often hardens at the same rate as the ones that have visibly failed. Replacing only the seal that leaks and leaving its neighbours in place is a common way to be back inside the same unit within a few months. Seal life is shortened considerably by contaminated fluid, so a failed seal kit is worth treating as a prompt to check filtration and fluid cleanliness rather than a fault in isolation. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Lock Nut
The lock nut, part 886 833 89, holds a threaded joint under vibration in Sandvik equipment, and its locking feature is what actually does the work, not the thread engagement alone. A lock nut reused after its locking element has already been compressed once no longer provides the resistance to loosening it was designed for, even though it still tightens down and looks fine. Because a joint backing off under vibration rarely announces itself before something downstream is damaged, lock nuts are treated as single-use items in most maintenance procedures rather than reused across service intervals. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Thermostat
The thermostat, part 886 640 59, regulates coolant or oil flow through a Sandvik unit's cooling circuit by opening and closing at a fixed temperature, and a thermostat that fails does not always fail in an obvious direction. One that sticks closed causes overheating quickly, while one that sticks open lets the system run cold and slows warm-up without setting off any alarm. Because the cold-running failure mode has no dramatic symptom, a thermostat is often only diagnosed once someone notices the unit is taking unusually long to reach operating temperature. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Shaft
The shaft, part 158 722 98, transmits rotational load through Sandvik equipment under torsional stress and whatever bending load any misalignment in the system adds on top. Fatigue in a shaft develops slowly through microscopic cracking, so a shaft nearing the end of its life can look completely serviceable right up until sudden fracture. Alignment is the biggest factor in how long a shaft actually lasts, and shaft failures in the field are so often accompanied by worn bearings that diagnosing one without checking the other risks repeating the failure with the replacement. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Space Assy
The space assembly, part 154 221 98, maintains a fixed clearance between two components in a Sandvik assembly, and unlike a wear part it is not meant to lose material in service at all. Any measurable change in its dimension is usually a sign of incorrect loading elsewhere rather than routine wear. Reusing an old spacer during a repair, even one that shows no visible damage, risks a permanent set that leaves the reassembled joint slightly out of tolerance in ways that only show up later as premature bearing wear. Replacing it as a matter of course whenever the assembly is opened is cheap insurance against that. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and construction contractors.
Screw
Part 0147 1438 03 is a screw used within the Atlas Copco equipment range, and while a fastener rarely draws attention the way a pump or bearing does, its material grade, thread pitch, and coating are chosen specifically for the joint it closes. A generic hardware equivalent can look identical while lacking the fatigue resistance or corrosion protection 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 fails can let a cover lift or a bracket work loose, 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.