Catalog: Stalroc Industrial
Browse heavy-duty drilling components engineered for extreme environments.
Seal Housing
The seal housing, part 154 128 58, holds the seal package in position and provides the machined bore the seal rides against, so its own surface finish matters as much as the seal fitted inside it. A housing bore that has scored or worn oversize will leak around a brand-new seal just as readily as it leaked around the old one, which is why housing condition is checked before a seal alone is replaced. Replacing the seal without inspecting the housing it seats in is a common reason a fresh seal fails again shortly after a rebuild. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Idler Wheel
The idler wheel, part 330 598 58, guides the track chain and carries its tension without driving it, absorbing the shock of ground contact along the full length of the undercarriage rather than at the drive sprocket alone. Because it runs unpowered, wear on its tread and flange is judged by measurement rather than by any change in how the machine drives, so it is easy to overlook until the flange itself is compromised. An idler run past its flange wear limit lets the chain walk further off-center on every pass, which accelerates wear on the chain and sprocket it was meant to protect. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Rear Cover
The rear cover, part BG004 009 57, closes the back of its assembly and locates the seals or bearings that sit against it, so its mating face has to hold flat under repeated removal for service access. A cover that has been over-torqued or reused past its limit distorts slightly at that face, and the leak it causes is often blamed on the seal rather than the cover distorting around it. Checking a rear cover for flatness before refitting it is a small step that avoids chasing a leak back to the wrong component. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Module
The module, part 550 124 17, packages a defined electronic or hydraulic function as a single serviceable unit, letting it be swapped as a whole rather than diagnosed and repaired component by component in the field. That design trades individual component cost for uptime: a rig down for diagnosis costs more than the module itself, so the part is specified and stocked as a complete exchange unit. Because it is treated as a sealed exchange item, opening a module to attempt an internal repair usually voids the calibration or sealing that made it reliable in the first place. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Elbow
The elbow, part 817 183 59, redirects hydraulic flow through a fixed angle at a point where straight fittings would not clear the surrounding structure, and its bend radius is sized to keep flow turbulence and pressure loss within the circuit's design limits. A generic elbow with a tighter radius fitted in its place restricts flow at that exact bend even though it looks like a straightforward equivalent on the shelf. Because the restriction it causes is inside the flow path rather than visible from outside, a wrong-radius substitute is usually only found once it shows up as reduced circuit performance. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Strap
The strap, part 855 161 79, secures a hose or cable run against the frame to keep it clear of moving components and away from abrasion points, a function easy to underrate until the run it was holding starts chafing against something it was never meant to touch. A strap that has lost its clamping tension lets the run it holds shift slightly with every vibration cycle, and that repeated small movement is what wears through a hose jacket over time. Because the failure it prevents happens gradually and out of sight along the run, straps are worth checking on a schedule rather than only when a hose failure prompts the inspection. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Buffer
The buffer, part 814 387 99, absorbs the shock at the end of a component's travel so the impact is spread over a moment rather than transmitted as a hard stop, protecting the structure around it rather than any moving part directly. As the buffer compound hardens with age and cyclic loading, it starts passing more of that impact through to the structure it was meant to protect, well before it shows any visible cracking. Because that hardening happens gradually, a buffer's condition is better judged by service hours than by a visual check alone. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Lock Rubber
The lock rubber, part 135 452 58, holds a component in place through friction and compression rather than a mechanical latch, relying on its own elasticity to keep tension against the part it secures. Once the rubber compound takes a permanent set from age or heat, it stops recovering its shape between cycles, and the part it was meant to hold starts working loose under vibration even though the rubber is still physically in place. Because a lock rubber that has lost tension can look intact while no longer doing its job, it is generally replaced on a service interval rather than only when visibly damaged. 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 151 742 48, carries the rotation drive shaft's radial load as a pre-fitted unit, built to the running clearance the drive train was designed around rather than left to be set during field assembly. Supplying it complete means the clearance between bushing and shaft is controlled at manufacture, which removes one of the more common sources of premature rotation-unit wear. A rotation unit that has developed backlash is often traced back to a bushing that was pressed in without achieving the specified clearance, which is the failure mode ordering the assembly as a unit is meant to avoid. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Micro Switch
The micro switch, part 550 038 55, signals a position or limit event to the control system, and it only has to fail intermittently rather than completely to cause a fault that is hard to reproduce on the bench. Contact wear inside it can leave a switch that still tests as functional under a slow manual check but drops the signal briefly under the vibration of normal operation. Because of that gap between bench testing and field behaviour, a micro switch implicated in an intermittent fault is generally replaced outright rather than cleared after testing normal. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Gasket
The gasket, part 0653 9038 00, seals a joint between two machined faces, and its thickness is part of what sets the clamping gap and preload across the joint rather than being a purely passive seal. A gasket of the wrong thickness can seal successfully at first fitment and still change the joint's clamping behaviour enough to cause a leak once the assembly has run through a few thermal cycles. Because the thickness tolerance matters as much as the seal material itself, gaskets on precision-machined joints are specified by part number rather than substituted from generic gasket stock. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.
Hydraulic Motor
The hydraulic motor, part 3222 3111 56, converts hydraulic flow into the rotational drive that turns the rig's rotation unit, and its internal clearances are set to a specific efficiency curve rather than simply built to turn under pressure. Internal leakage across worn clearances lets the motor still rotate under light load while losing torque under the higher load drilling actually demands, which shows up as stalling under load rather than as an obvious fault when tested idle. Because that leakage is internal, a motor can pass a basic no-load spin test and still be the reason a rig loses rotation torque under real drilling conditions. Stalroc quotes this Atlas Copco reference by part number and exports worldwide to mining, quarrying, and drilling contractors.