3115182201 — Revised Accumulator Diaphragm

Understanding the 3115182201 Revision

Atlas Copco periodically revises part numbers across their product catalog as part of their continuous improvement process. Part number 3115182201 was issued as the official supersession of the original 3115182200 accumulator rubber diaphragm. If you search for 3115182200 in the current Epiroc parts catalog, the system will redirect you to 3115182201 — confirming that the revised number is the current active reference.

The revision does not indicate a change in the physical dimensions, material specifications, or functional performance of the diaphragm. Rather, part number revisions in the Atlas Copco / Epiroc system typically reflect one or more of the following updates:

• Updated material certification or traceability documentation
• Minor adjustments to manufacturing process parameters
• Changes to quality control inspection criteria
• Consolidation of previously separate regional part numbers
• Integration into the Epiroc parts system following the 2018 demerger from Atlas Copco

For maintenance teams and purchasing departments, the practical takeaway is straightforward: if your parts list or service manual references either 3115182200 or 3115182201, you need the same physical component. Our aftermarket replacement diaphragm satisfies both part numbers.

Technical Specifications

Current Part Number	3115182201
Supersedes	3115182200
Component	Accumulator Rubber Diaphragm / Membrane
OEM Brand	Atlas Copco / Epiroc
Material	NBR or Polyurethane
Max. Operating Pressure	230 bar
Compatible Rock Drills	COP 1238K, COP 1638HD/HD+, COP 1838 series, COP 1840+, COP 2238HD
Manufacturer	Babacan Rubber — ISO 9001:2015

Which Part Number Should You Order?

When placing an order with us, you can reference either 3115182200 or 3115182201 — we will supply the same OEM-equivalent diaphragm in both cases. Our manufacturing specification is based on the latest revision, ensuring you receive the most current version of this component regardless of which number appears in your documentation.

If your workshop maintains an internal parts database, we recommend updating the reference to 3115182201 to align with the current Epiroc catalog. This prevents potential confusion during future parts ordering and ensures your records match the manufacturer's active part numbering system.

Compatible Equipment

The 3115182201 diaphragm is used in the accumulator assembly of the following COP series rock drills mounted on Atlas Copco / Epiroc underground drilling rigs:

These rock drills are installed on Boomer E3, Boomer M1D, Boomer M2D face drilling jumbos and Simba long-hole production rigs used in underground hard-rock mining and tunnel development worldwide.