33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
This professional repair diaphragm & seal kit is customized for MONTABERT M300 hydraulic rock drifters, widely applied in mining tunneling, quarry rock drilling and engineering blasting rigs. It integrates core nitrogen accumulator diaphragm, rubber seal cups, O-rings, dust seals, gaskets and anti-extrusion backup rings for full machine overhaul maintenance.
Manufactured with imported high-strength FKM fluororubber and reinforced fabric composite diaphragm material, the kit boasts outstanding hydraulic oil resistance, nitrogen aging resistance, impact fatigue resistance and high-pressure bearing capacity. It perfectly replaces original MONTABERT OEM sealing parts, thoroughly solves common failures such as accumulator nitrogen leakage, internal hydraulic oil seepage, pressure attenuation and weak impact force, and greatly extends the service life of M300 rock drill under continuous high-frequency percussion working conditions.
Item |
Detailed Parameter |
Product Name |
MONTABERT M300 Rock Drill Diaphragm & Full Seal Kit |
Applicable Model |
M300 Hydraulic Percussion Rock Drifter |
Compatible Series |
MONTABERT M Series Medium Hydraulic Drifters |
Main Material |
Imported FKM Fluororubber + Fabric Reinforced Diaphragm + PTFE Backup Ring |
Max Working Pressure |
28MPa |
Working Temperature |
-30°C ~ 120°C |
Kit Contents |
Nitrogen accumulator diaphragm, hydraulic seal cups, dust wiper seals, O-rings, metal gaskets, anti-extrusion backup rings, complete full overhaul accessories |
Cross Reference OEM No. |
MONT-M300, 86634128, TRAMAC-M300 |
Net Weight |
Approximately 1.1kg |
Applicable System |
Hydraulic nitrogen accumulator percussion system for rock drifters |
Warranty |
12 Months |
Fully dimensional matched with original MONTABERT M300 rock drill, compatible with OEM part numbers MONT-M300 and 86634128. No cutting, grinding or modification required for on-site direct installation, perfectly fit accumulator cavity and hydraulic cylinder sealing grooves.
Core nitrogen diaphragm adopts multi-layer fabric reinforced FKM composite material to resist long-term nitrogen expansion fatigue; all rubber sealing parts use high-temperature fluororubber, featuring anti-corrosion, anti-aging and anti-cracking performance, stable operation under -30°C to 120°C harsh working environment.
All components pass 28MPa long-cycle high-pressure fatigue testing, effectively block accumulator nitrogen leakage and internal & external hydraulic oil seepage. Stabilize percussion impact pressure, maintain consistent drilling impact force, avoid drilling efficiency drop caused by pressure loss.
Contains all diaphragm and sealing spare parts needed for full disassembly maintenance of M300 rock drill. One set meets full machine repair demand, reduces separate parts procurement time, shortens equipment downtime and cuts overall operation maintenance cost.
Every complete kit undergoes air tightness test, high-pressure endurance test and aging fatigue test before delivery, fully meets MONTABERT original factory technical standards, guarantee stable and long-term reliable performance under heavy-duty mining and construction working conditions.
Suitable for all equipment equipped with MONTABERT M300 hydraulic rock drifter: • Underground mining tunneling drilling rigs • Open-pit quarry rock drilling equipment • Road & tunnel blasting engineering drill jumbos • Anchor bolt support drilling machinery • Multi-functional hydraulic rock drill carriers • Heavy-duty percussion drilling hydraulic systems
Welcome to HOVOO, a Chinese seal factory. Production of PU, Rubber and PTFE seals. The seals include O-ring, piston seal, rod seal, Gray ring and gas seal.
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