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]
Product Overview
This heavy‑duty accumulator diaphragm is specially engineered for Epiroc 1238K hydraulic rock drill. It serves as the core rubber separating component for nitrogen accumulator, isolating hydraulic oil and nitrogen gas. Made of high‑grade reinforced FKM fluororubber and fabric‑reinforced rubber compound, this diaphragm delivers outstanding oil resistance, anti‑fatigue performance and pressure‑bearing capacity. It perfectly replaces original Epiroc diaphragm parts, resolves typical faults such as weak impact force, nitrogen leakage and unstable drilling power, and extends rock drill service life under continuous underground heavy‑load working conditions.
Product Specifications
Item |
Detailed Parameter |
Product Name |
Epiroc 1238K Rock Drill Accumulator Diaphragm |
Applicable Model |
1238K Hydraulic Rock Drill |
Compatible Series |
Epiroc Underground Drifter Series |
Main Material |
Fabric‑reinforced FKM Fluororubber Compound |
Max Working Pressure |
28MPa |
Working Temperature |
-25°C ~ 110°C |
Kit Contents |
Accumulator diaphragm, matching O‑rings and auxiliary sealing accessories |
Cross Reference OEM No. |
3115182201 |
Net Weight |
Approximately 0.85kg |
Applicable System |
Hydraulic nitrogen accumulator system for underground rock drill |
Warranty |
12 Months |
Key Selling Points
1. 100% Exact OEM Replacement.Fully compatible with original Epiroc 1238K rock drill. Matches OEM part number 3115182201. No modification required for direct field installation.
2. Premium Reinforced Diaphragm Material.Adopts fabric‑reinforced FKM rubber structure. Excellent oil‑proof, anti‑aging and flex‑fatigue resistance, maintaining stable performance under‑25°C to 110°C cyclic pressure impact.
3. Zero Gas‑oil Mixing & High Pressure Durability.Every diaphragm is strictly pressure‑cycling tested under 28MPa working pressure. Effectively prevents nitrogen leakage and oil‑gas mixing, stabilizes accumulator energy storage and keeps consistent rock drill impact output.
4. Complete Matching Repair Accessory.Set includes main diaphragm together with matched O‑rings for accumulator service. Complete supporting parts shorten on‑site maintenance time and lower underground equipment operating cost.
5. Strict Factory Quality Control.Each diaphragm passes fatigue cycling, air tightness and pressure resistance tests before delivery. Meets OEM performance standard to guarantee reliable long‑term underground operation.
6. Application Scope.Suitable for Epiroc 1238K rock drill equipped on various heavy‑duty underground drilling equipment:
• Underground tunneling drill rigs
• Mining drifting jumbos
• Underground rock drilling carriers
• Hydraulic drifter units
• Underground excavation machinery
• Rock bolting drilling equipment
• Heavy‑duty underground mobile drilling machines
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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