With over a decade in mining equipment maintenance, I’ve seen generic hydraulic stop pistons fail consistently: most use low-strength aluminum alloy or unheat-treated steel that deforms under hydraulic pressure (2000+ psi) in 500-700 hours. Deformation leads to two critical issues: first, it can’t limit movement effectively, causing component collision (a $2,800+ repair for cylinder damage); second, it creates gaps that leak hydraulic oil (wasting 5-7 liters monthly). These failures force unplanned downtime and increase operational costs.

This Hyd. stop piston 86747110 avoids these risks as a genuine OEM part, engineered to Montabert’s strict standards. Unlike generic alternatives, it’s made of heat-treated high-strength alloy steel (tensile strength ≥ 900 MPa) that resists deformation even under long-term high-pressure use. Its stop surface is polished to Ra ≤ 0.8μm, ensuring smooth contact with matching components (no abnormal wear), and the seal groove is machined to ±0.003mm tolerance—ensuring a tight fit with seals (eliminating oil leakage).

Since wear varies by circuit pressure and usage frequency (e.g., heavy-duty drilling increases stress), the “replace based on actual usage” guideline lets you optimize maintenance—no unnecessary replacements, but timely changes when damage appears. And with short delivery times (no 2-3 week waits like generic pistons), you can restock fast to keep your HC95 drills running. Add in competitive pricing that beats many non-OEM options, and this Hyd. stop piston 86747110 becomes an essential choice for mines prioritizing reliability and cost-efficiency. Whether you’re drilling in underground damp mines or surface dusty quarries, it keeps your HC95’s hydraulic system stable and protected—shift after shift.