Catalog: Stalroc Industrial
Browse heavy-duty drilling components engineered for extreme environments.
Cap Nut
The cap nut, part 152 525 68, closes a threaded connection under internal pressure in a Sandvik rock drill, and it is the clamping force it holds, not just its shape, that keeps that connection sealed. A cap nut that has been reused through several rebuilds loses some of that clamping accuracy each time it is torqued down again, which is a slow way to develop a leak that looks unrelated to the fastener itself. Because it sits directly on a pressurised joint, fitting it correctly matters more than its low individual cost would suggest. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Gas Valve
The gas valve, part 3115 0262 00, is used to charge and check the nitrogen pressure in a Sandvik rock drill's accumulator, and the accuracy of that charge pressure has a direct effect on how the drill strikes. An accumulator charged even slightly outside specification changes the piston's stroke characteristics, which is felt as altered impact rather than diagnosed as a charging fault. Because the valve is only used periodically rather than continuously, a seized or leaking one often goes unnoticed until an accumulator is due to be checked, at which point the charging job cannot proceed without it. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Cylinder HL1560
The cylinder, part 550 352 19, is the machined housing the piston strokes inside on a Sandvik HL1560 rock drill, and its bore finish is what the piston's own seal and guide surfaces are matched against. Scoring or ovality in that bore is rarely caused by the cylinder itself; it is usually the result of contamination or a worn piston running against it, which is why the piston and bushings are worth checking whenever a cylinder is condemned. Because the bore dimensions are specific to the HL1560, a cylinder from a similar-looking Sandvik model is not a safe substitute even where the outside dimensions appear close. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Cylinder
The cylinder, part 550 047 84, forms the pressure boundary and piston bore of a Sandvik rock drill, carrying both the hydraulic porting that drives percussion and the structural load the drill's housing depends on. Because the bore is a precision surface rather than just a structural wall, damage to it is rarely repaired on site; a scored or worn bore is normally a replacement decision rather than a machining one. Cylinder wear is usually driven by whatever is running inside it rather than by the cylinder itself, so a worn piston or contaminated fluid is worth investigating before the new cylinder is put into the same conditions that damaged the last one. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Piston
The piston, part 153 669 48, transfers hydraulic pressure into the impact that drives a Sandvik rock drill's percussion mechanism, and its outer surface finish is what its seal depends on to hold pressure through tens of thousands of cycles. A surface that has lost its finish, even without visible scoring, lets pressure bypass the seal gradually rather than all at once, so output falls off before any single fault becomes obvious. Because that kind of wear is progressive, checking piston condition against drilling hours rather than waiting for a clear symptom is the more reliable approach. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Rotation Bushing Assy
The rotation bushing assembly, part 550 526 12, is supplied as a complete pre-fitted unit rather than a loose bushing alone, so the bore and running clearance are set before the assembly ever reaches the rig. Ordering it as an assembly avoids the fitting variance that comes from pressing a replacement bushing into a housing on-site, where achieving the original clearance depends on tooling and technique that varies from shop to shop. Because the running clearance is what determines service life, an assembly ordered as a matched unit gives a more predictable result than a bushing fitted independently. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Bushing
The bushing, part 550 356 04, provides a replaceable wear surface between a shaft and its housing, taking the running clearance so the more expensive shaft or housing does not have to. Because it is the softer of the two mating surfaces by design, it wears first and predictably, which is the point: replacing a worn bushing on schedule is far cheaper than machining an oversize housing or shaft later. A bushing left in service after it has opened up its clearance stops protecting the harder components around it, and the wear that follows transfers onto surfaces that are not designed to be replaced as easily. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Accumulator Complete
The accumulator, part 550 036 27, is charged and matched to the percussion frequency of a specific Sandvik rock drill, and that tuning is what lets it absorb return-stroke energy at the rate the drill actually produces it rather than at some average rate. Fitting an accumulator sized for a different model changes how the circuit responds under load, even when the fitting and thread happen to match. Because the mismatch shows up as altered impact feel rather than as a fault code, it is easy to miss unless the reference is checked against the machine's own parts manual before ordering. Stalroc supplies this Sandvik reference against its part number and exports worldwide to drilling contractors.
Seal Housing
The seal housing, part 152 623 38, sits at a point in a Sandvik rock drill where it holds back flushing water or air as well as hydraulic fluid, so its job is keeping two different kinds of contamination out rather than containing a single fluid. A housing that has worn even slightly at this position lets flushing debris track inward along a path the seal was never designed to block on its own. Because that ingress point is easy to miss during a routine seal change, checking the housing bore whenever the seals here are renewed is worth the extra few minutes. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Pin
The pin, part 154 020 08, locates two components relative to each other or acts as a pivot point, and its diameter is held to a tolerance tight enough that even minor wear changes the fit around it. A pin that has worn slightly undersize introduces play at the joint it locates, which reads as looseness in the components it connects rather than as wear in the pin itself. Because pin wear is often blamed on the parts it connects rather than on the pin, checking pin diameter directly is a faster way to isolate play in a joint than replacing the surrounding components first. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Pin
The pin, part 154 122 98, retains a component axially inside a Sandvik rock drill against the vibration the machine generates continuously, holding position rather than carrying rotating or pivoting load. A retaining pin that has worked loose does not usually fall out outright; it backs off gradually and lets the component it holds creep out of position over repeated cycles. That slow creep is what makes retaining pins worth checking on a schedule rather than waiting for something to visibly shift, since by the time movement is obvious the component has usually already been running out of position for a while. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Cylinder Rear
The rear cylinder, part 153 602 08, closes the back end of the stroke in a Sandvik rock drill and interfaces directly with the back head, so it carries both the piston's return-stroke impact and the porting that feeds the percussion circuit at that end. Wear here tends to concentrate at the point where the piston reverses direction, which is a narrower band of the bore than the piston's full travel covers. Because that wear band is localised rather than spread along the bore, a rear cylinder can need renewal well before a straightedge check anywhere else in the assembly would suggest it. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.