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OEM 3115505900 WASHE Epiroc COP 1838HD COP 2238HD Atlas Copco Mining equipment part 3115 5059 00

Gear housing washer that holds up when the hammer hits

OEM washer 3115505900 (3115 5059 00) for Epiroc COP 1838HD, 2238HD, and matching Atlas Copco rock drills. It sits in the gear housing assembly, keeping oil in and contamination out—even when the rig is shaking non-stop. No fancy claims, just a part machined to factory spec that doesn’t quit early.

  • Part Number: 3115505900
  • Brand: Epiroc / Atlas Copco
  • Used on: COP 1638HD+, COP 1838HD, COP 1838HD+, COP 2238HD, COP 2238HD+
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OEM 3115505900 WASHE Epiroc COP 1838HD COP 2238HD Atlas Copco Mining equipment part 3115 5059 00
#303
Highlights
Key Advantages
  • Made to original factory tolerances – drops straight into the gear housing without fiddling
  • Built for high-vibration, high-grit worksites where generic washers wear out fast
  • Keeps gear oil where it belongs, cutting down on surprise leaks and unscheduled downtime
  • Matches OEM numbers 3115505900 and 3115 5059 00 – no guesswork on fit
  • Covers multiple COP series models, so you don’t need a drawer full of different washers
Use Cases
Applications
  • Epiroc COP 1838HD / 1838HD+ down-the-hole drills
  • Epiroc COP 2238HD / 2238HD+ rock drills
  • Atlas Copco COP 1638HD+ rigs
  • Surface mining and quarry blast-hole drilling
  • Heavy civil construction and tunnel boring jumbos
  • Gear housing units on hydraulic drifters and rotation motors
Specs
Technical Specifications
BrandEpiroc / Atlas Copco
Part Number3115505900 (3115 5059 00)
DescriptionWasher
Use inCOP 1638HD+, COP 1838HD, COP 1838HD+, COP 2238HD, COP 2238HD+
MaterialHardened steel – matches OEM spec
Application AreaGear housing assembly
Details
Detailed Description
Brand :Epiroc
Part No. :3115505900
Description :Washer
Use in :Cop 1638hd+ , Cop 1838hd , Cop 1838hd+ , Cop 2238hd , Cop 2238hd+

GEAR HOUSING of Atlas Copco Epiroc COP 2238HD+

Parts NO.

Name

31155035813115 5035 81 – GEAR HOUSING
31150821003115 0821 00 – SHAFT
05161504010516 1504 01 – NEEDLE BEARING
31150823003115 0823 00 – WASHER

3115027400

3115 0274 00 – GEAR WHEEL

05161538000516 1538 00 – NEEDLE BEARING
31150824003115 0824 00 – SLEEVE
31156004033115 6004 03 – CUP SEAL
31152742003115 2742 00 – GUIDE SLEEVE

0663213301

0663 2133 01 – O-RING

31155313803115 5313 80 – ROT.CHUCK.COMPL
05090221000509 0221 00 – ROLLER BEARING
05090223000509 0223 00 – ROLLER BEARING
31150297013115 0297 01 – SHIM
31150297023115 0297 02 – SHIM

Parts NO.

Name

31150297033115 0297 03 – SHIM
31155314003115 5314 00 – DRIVER
31156004883115 6004 88 – ROT.CH.BUSHING
31153245003115 3245 00 – SEAL RING

0663212000

0663 2120 00 – O-RING

05442162000544 2162 00 – GREASE NIPPLE
06864201030686 4201 03 – PLUG
06539038000653 9038 00 – CASKET
06667188010666 7188 01 – RADIAL LIP SEAL
03352169000335 2169 00 – CIRCLIP

3115361300

3115 3613 00 – STUD

31150273003115 0273 00 – WASHER
06869252270686 9252 27 – PROTECTION CAP
02590311000259 0311 00 – THREAD INSERT

FAQ
FAQ
What rock drill models take this washer?
It’s used on COP 1638HD+, 1838HD, 1838HD+, 2238HD, and 2238HD+. Same part for Epiroc and older Atlas Copco branding. Double-check your parts book to be 100% sure.
Is this an original Epiroc part or from a copy supplier?
Genuine OEM from Epiroc/Atlas Copco. No copies, no “will-fit.” Material and hardening are done to the original print.
How quickly can you ship?
Stocked washers leave the warehouse in 24–48 hours. Bulk orders or non-stock quantities usually take 5–15 business days, depending on where you are.
Will this washer work for my serial number?
Cross-reference part 3115505900 or 3115 5059 00 in your machine parts manual. If you’re stuck, send us your model and serial number—we’ll confirm before you order.
What does the washer actually do inside the drill?
It acts as a spacer and seal support in the gear housing. Under percussion, it keeps the oil film intact and stops debris from chewing up the seal, so you don’t lose pressure or cook the gears.
Stock
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