Home / Epirco / Epiroc Cop 2238hd+ 2238 3115324400 impact piston 3115 3244 00 Rock Drill and Spare Parts Atlas Copco
Product

Epiroc Cop 2238hd+ 2238 3115324400 impact piston 3115 3244 00 Rock Drill and Spare Parts Atlas Copco

Drop-in replacement piston for Epiroc COP 2238HD+ hydraulic rock drills

Part 3115324400 (also stamped as 3115 3244 00) is the impact piston that does the heavy lifting inside Epiroc COP 2238HD+, COP 2238, and COP 2238ME drifters. If your penetration rate has dropped off, you're seeing uneven strike faces, or you've clocked more hours than the OEM service interval, this is the component to swap out.

We spec these pistons from the same alloy and heat-treat process used in the original Atlas Copco units. The geometry, surface finish, and case depth all match factory drawings — which matters when you're trying to get back to rated performance without messing with shimming or re-tuning the drifter. No mystery metals, no 'close enough' tolerances.

Get a Quote Back to Epirco
Epiroc Cop 2238hd+ 2238 3115324400 impact piston 3115 3244 00 Rock Drill and Spare Parts Atlas Copco
#218
Highlights
Key Advantages
  • Matches Epiroc drawing 3115324400 — drop-in fit for COP 2238HD+, COP 2238, and COP 2238ME drifters
  • Case-hardened alloy steel, ground to OEM surface finish specs — built to handle high-frequency percussive cycles in hard rock
  • Hit rate and energy transfer stay consistent because the impact face and guide diameters aren't 'budget-trimmed'
  • Every piston ships with anti-corrosion wrap and individual boxing — no shelf rash when it arrives at your site
  • Full batch traceability back to material certificates — useful if you run compliance audits on critical spares
Use Cases
Applications
  • Hard rock production drilling — blast holes in underground stopes and open pit benches
  • Quarry face drilling — aggregate quarries where bit life and straight holes mean more tonnes per shift
  • Tunnel advance and cross-cut development — jumbos running multiple COP 2238 drifters simultaneously
  • Ground support — bolt-hole drilling in poor ground where reliable percussion is non-negotiable
  • Deep-hole water well and geothermal — long drill strings where consistent impact translates into faster tripping
Specs
Technical Specifications
Part nameImpact piston
Epiroc part number3115324400
Atlas Copco reference3115 3244 00
Fits drill modelsCOP 2238HD+, COP 2238, COP 2238ME
MaterialCase-hardened alloy steel
WeightCheck your parts book — varies slightly by revision
PackagingVCI paper + foam-lined individual carton
Manufacturing standardOEM drawing-controlled, not reverse-engineered from a used sample
Details
Detailed Description

Epiroc Cop 2238hd+ 2238 3115324400 impact piston 3115 3244 00 Rock Drill and Spare Parts Atlas Copco

Parts NO.

Name

31155042823115 5042 82 – FRONT PART COMP
31152231003115 2231 00 – DRILL COLLAR
31150286003115 0286 00 – DOME NUT
31150287003115 0287 00 – WASHER
31151457003115 1457 00 – SIDE BOLT

3115504000

3115 5040 00 – SIDE BOLT

31153473803115 3473 80 – HYDRAULIC MOTOR
31153473813115 3473 81 – HYDRAULIC MOTOR
31153473823115 3473 82 – HYDRAULIC MOTOR
31153473833115 3473 83 – HYDRAULIC MOTOR
31150277003115 0277 00 – COUPLING
03352130000335 2130 00 – CIRCLIP

3115032700

3115 0327 00 – GASKET

31153548003115 3548 00 – NUT
31153451813115 3451 81 – ACCUMULATOR
31153511813115 3511 81 – ACCUMULATOR
31156009343115 6009 34 – RETURN ACCUM.
00880016540088 0016 54 – PRODUCT GRAPHICS

3176651200

3176 6512 00 – NIPPLE

31766514003176 6514 00 – NIPPLE
31155042003115 5042 00 – FRONT PART
31155045013115 5045 01 – GUIDE
31153024003115 3024 00 – WIPER
31155044053115 5044 05 – FLUSHING HEAD
31152333003115 2333 00 – CUP SEAL

3115519000

3115 5190 00 – CUP SEAL

31153289173115 3289 17 – SEAL RING
31155059003115 5059 00 – WASHER
31155043123115 5043 12 – CONNECT. PLATE
31151825003115 1825 00 – PLUG
31153445003115 3445 00 – SEAL RING

0147147903

0147 1479 03 – SCREW, HEX HEAD

33150195103315 0195 10 – LOCK WASHER
31153245003115 3245 00 – SEAL RING
31152990003115 2990 00 – STOP RING
06632145010663 2145 01 – O-RING
06632143000663 2143 00 – O-RING
31155036803115 5036 80 – COVER COMPL.

3115503610

3115 5036 10 – COVER

06667190010666 7190 01 – RADIAL LIP SEAL
03352173000335 2173 00 – CIRCLIP
06636151000663 6151 00 – O-RING
01020473000102 0473 00 – PIN
31155035813115 5035 81 – GEAR HOUSING
05442162000544 2162 00 – GREASE NIPPLE

0686420103

0686 4201 03 – PLUG

06539038000653 9038 00 – GASKET
06667188010666 7188 01 – RADIAL LIP SEAL
03352169000335 2169 00 – CIRCLIP
31153613003115 3613 00 – STUD
31150273003115 0273 00 – WASHER

0686925227

0686 9252 27 – PROTECTION CAP

31150821003115 0821 00 – SHAFT
05161504010516 1504 01 – NEEDLE BEARING
31150823003115 0823 00 – WASHER
31150274003115 0274 00 – GEAR WHEEL
05161538000516 1538 00 – NEEDLE BEARING
31150824003115 0824 00 – SLEEVE


Parts NO.

Name

06632133010663 2133 01 – O-RING
31155313803115 5313 80 – ROT.CHUCK,COMPL
31156004353115 6004 35 – CHUK.BUSH.GUIDE
05090221000509 0221 00 – ROLLER BEARING
05090223000509 0223 00 – ROLLER BEARING

3115029701

3115 0297 01 – SHIM

31150297023115 0297 02 – SHIM
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

31155274803115 5274 80 – INTERM. COMPL
31155274243115 5274 24 – INTERMED.PART
31155358043115 5358 04 – LINER
31153289233115 3289 23 – SEAL.RING
31153289133115 3289 13 – SEAL.RING
31155360003115 5360 00 – DISK SPRING

3115174606

3115 1746 06 – NOZZLE

31152384003115 2384 00 – VALVE SEAT
31152383003115 2383 00 – VALVE CONE
31153290183115 3290 18 – SEAL.RING
31156003733115 6003 73 – CONNECT.PLATE
02111960840211 1960 84 – SCREW
57505317975750 5317 97 – O-RING

3115298800

3115 2988 00 – SEAL.RING

31155146013115 5146 01 – SEAL.RING
31156004703115 6004 70 – SEAL.KIT
31152971003115 2971 00 – DAMPING PISTON
06869110000686 9110 00 – PROTECTION PLUG
31151944803115 1944 80 – CYLINDER

3115116500

3115 1165 00 – STUD

31152112013115 2112 01 – GUIDE
31155275803115 5275 80 – SEAL HOUSE COMP
31150970003115 0970 00 – SEAL KIT
06632105760663 2105 76 – O-RING
31155050023115 5050 02 – PISTON GUIDE

3115324400

3115 3244 00 – PISTON

31151833003115 1833 00 – PISTON GUIDE
31152771803115 2771 80 – SEAL HOUSE COMP
31150845003115 0845 00 – SEAL KIT
06636135000663 6135 00 – O-RING
31151765003115 1765 00 – VALVE PISTON
31152077053115 2077 05 – VALVE COVER

3115207604

3115 2076 04 – VALVE COVER

01471438030147 1438 03 – SCREW, HEX HEAD
31156003443115 6003 44 – REGULATING PIN
31153214003115 3214 00 – NUT
31151697003115 1697 00 – SEAL WASHER
06636134010663 6134 01 – O-RING

3115600440

3115 6004 40 – BACK HEAD

01471481030147 1481 03 – SCREW, HEX HEAD
06636138000663 6138 00 – O-RING
06859250260685 9250 26 – PLUG

0685925027

0685 9250 27 – PLUG

31151603913115 1603 91 – NIPPLE SET
31156004033115 6004 03 – CUP SEAL
31152742003115 2742 00 – GUIDE SLEEVE


FAQ
FAQ
Is this an original Epiroc piston or a copy?
It's built to the same specification as the Epiroc original. We use the same material grade, heat-treat cycle, and grinding tolerances — you're not getting a soft 'will-fit' from unknown stock.
How do I know 3115324400 fits my drifter?
Check the part number stamped on your current piston. If you see 3115 3244 00, this is the right replacement. You can also email us your drifter serial number and we'll confirm from the factory parts list.
What's the lead time on a single piston?
We stock these. Orders placed before 14:00 typically ship the same day. Express freight gets it to most mine sites in 3–7 working days.
Will I need to re-shim after installing this piston?
Normally you don't. Because we hold OEM tolerances, the piston fits into the existing front guide and driver without messing with your shim pack — but we always recommend a quick percussion test on the bench before bolting it back onto the feed.
Do you sell the full COP 2238 rebuild kit?
Yes — seal kits, front parts, rotation units, accumulator diaphragms. If you're pulling the drifter apart anyway, we can put a list together from your parts book so you only open it once.
Stock
Check Stock & Get a Quote
Direct line to our drifter parts team — same-day response, no chatbot runaround. We'll verify compatibility, stock, and freight to your site.
Send Inquiry