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Epiroc Sliding Piece 3128303930 for Boomer 104 Boltec 235h Atlas Copco 3128 3039 30 Slider

Sliding Piece That Takes the Punishment, Not Your Drifter

The Epiroc 3128303930 sliding piece sits inside the drifter, keeping the piston aligned and absorbing the constant hammering that kills lesser parts. It’s a direct swap for reference 3128 3039 30 and fits a long list of rigs — Boomer 104, Boltec 235h, Simba H157, and more. The polymer material won’t corrode, doesn’t need extra lube, and spares your costly metal components from early wear.

If you’re seeing more drift, vibration, or uneven wear in the front end, a worn slider is usually the first suspect. Swapping this part often brings the drifter back to smooth, quiet operation without a full teardown.

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Epiroc Sliding Piece 3128303930 for Boomer 104 Boltec 235h Atlas Copco 3128 3039 30 Slider
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Highlights
Key Advantages
  • Polymer body handles non-stop impact and heat without cracking — stays stable through back-to-back drilling shifts
  • Molded to factory shape so it drops right in, with no grinding or shimming needed to get the piston tracking straight
  • Slippery surface keeps metal-on-metal friction low when the hammer cycles at full speed, reducing heat buildup and scuffing
  • Zero rust in wet stopes or corrosive water — lasts longer than steel alternatives in harsh underground conditions
  • Cuts maintenance downtime by protecting adjacent parts. Fewer rebuilds, less bench time, more meters drilled per week
Use Cases
Applications
  • Underground face drilling with Boomer 104, Boomer 281, Boomer M2c, and similar jumbos
  • Bolting operations — Boltec 235h, Boltec LC, and other mechanized bolters running COP 1838 drifters
  • Production and long-hole drilling with Simba H1257, Simba H157, Simba S7d rigs
  • Tunneling drills exposed to high RPM and frequent starts/stops where slide wear accelerates
  • Quarry and surface bench drilling with COP 1838/2150-series drifters in rough, dusty environments
Specs
Technical Specifications
Part Number3128303930
Alternate Reference3128 3039 30
MaterialHigh-density engineering polymer
FunctionPiston/hammer/stabilizer sliding guide
Compatible Drifter SeriesAtlas Copco COP 1838/2150 series
Weight0.95 kg
Global Delivery5 Working Days
Details
Detailed Description
Brand :Epiroc
Part No. :3128303930
Description :Sliding Piece
Use in :Boltec 235h , Boomer 104 , Boomer 281 , Boomer 281dh , Boomer 282 , Boomer 353 , Boomer K111 , Boomer K41 , Boomer K41x , Boomer L2c , Boomer L2d , Boomer M1d , Boomer M2c , Boomer M2d , Boomer S1d , Boomer Xe3 , Boomer Xl3 , Simba H1257 , Simba H157 , Simba S7d


3128303930 SLIDING PIECE ATLAS COPCO
3128 3039 30 Sliding Piece for Atlas Copco Drifters
The 3128303930 SLIDING PIECE ATLAS COPCO (also referenced as 3128 3039 30) is an advanced wear-resistant guiding component engineered for high-frequency rock drilling systems used across multiple Atlas Copco hydraulic drifter platforms. As a critical interface element within the drifter’s internal motion path, the sliding piece ensures smooth, controlled, and low-friction movement of internal components under high impact, continuous vibration, and intense operating pressure.

Manufactured with precision-molded, high-density polymer materials and reinforced geometric profiles, the 3128303930 SLIDING PIECE ATLAS COPCO delivers exceptional abrasion resistance, optimized sliding dynamics, and long service life in underground mining, quarry drilling, tunneling, and high-tonnage excavation environments.

Function and Purpose of the 3128303930 Sliding Piece Atlas Copco
The 3128303930 SLIDING PIECE ATLAS COPCO functions as a stabilizing and guiding insert within the drifter assembly, typically positioned along the hammer or piston movement channel. Its purpose is to:

Maintain correct axial alignment between piston, chuck, and front head

Absorb frictional loads during high-speed reciprocation

Reduce wear on metallic components via a controlled sliding surface

Ensure consistent drilling trajectory and energy transfer

Minimize heat generation through optimized polymer-based friction properties

In hydraulic drifters, where impact forces exceed thousands of blows per minute, the 3128 3039 30 sliding piece plays an essential reliability role by preventing internal misalignment, reducing vibration, and extending the lifespan of hammers, bushings, seals, and sleeves.

Key Features and Performance Advantages
High-Resistance Polymer Engineering
The 3128303930 SLIDING PIECE ATLAS COPCO is molded from industrial-grade, impact-modifying polymers, offering:

Exceptional resistance to cracking and fatigue

Superior heat distribution during long drilling cycles

Self-lubricating characteristics that reduce friction coefficients

Optimized Wear Geometry
The sliding piece integrates structural ribs and precision-profiled faces that help:

Maintain stable axial motion

Improve impact load distribution

Prevent jamming or uneven wear within the sliding channel

Dimensional Accuracy for Perfect Fit
With tight manufacturing tolerances and a controlled thickness ratio, the sliding piece ensures:

Zero-modification installation

Perfect fit within Atlas Copco drifter cavities

Fully stabilized piston guidance

Extended Maintenance Intervals
Using high-durability polymers significantly reduces the frequency of:

Chamber cleaning

Internal drifter rebuilds

Part replacements

The result is increased uptime for heavy-duty drilling operations.

Corrosion-Free Performance
Unlike steel components, this polymer sliding piece:

Does not oxidize

Maintains consistent performance in wet, humid, or chemical-heavy environments

Technical Specifications
Category Details
Part Name 3128303930 Sliding Piece Atlas Copco
Alternate Reference 3128 3039 30
Material High-density engineering polymer
Color Yellow (standard polymer coating)
Function Piston/hammer/stabilizer sliding guide
Heat Resistance Suitable for continuous high-impact thermal cycles
Compatibility Multiple Atlas Copco 1838/215 series drifters
Average Weight 0.95 kg
Global Delivery 5 Working Days
Compatible Atlas Copco Models
The 3128303930 SLIDING PIECE ATLAS COPCO is widely used across drilling models such as:

Atlas Copco COP 1838 series

Atlas Copco COP 1838ME

Atlas Copco COP 1838HE

Atlas Copco COP 1838HF

Atlas Copco COP 1838HD

Atlas Copco COP 2150 and selected variants

Various underground and surface drifter systems within the 1800–2100 class

If you want, I can produce a complete compatibility chart for all models, machines, and carriers.



FAQ
FAQ
What does this sliding piece actually do inside the drifter?
It channels the piston, keeping it on a straight path while absorbing the side loads and vibration that come from high-speed reciprocation. Without it (or with a badly worn one), the piston wanders, hammers the chuck and front head, and drilling accuracy goes out the window.
I don’t see my rig on the list. Will it fit?
If your drifter is from the Atlas Copco COP 1838 or COP 2150 family, it’s very likely compatible. The part number 3128303930 (or 3128 3039 30) is the one to check against your manual. Still unsure? Send us your machine model and serial number — we’ll confirm before you order.
Is this a genuine Epiroc part or an aftermarket copy?
It’s a genuine OEM Epiroc part, not a copy. Same factory specs, same material, same warranty expectations. If you’ve been stung by soft aftermarket sliders that wear out in weeks, this is the fix.
What’s the real benefit of the polymer vs. a steel slider?
No rust, no galling, and it doesn’t chew up the surfaces it slides against. It’s also self-lubricating to a degree, which means less stiction and cooler running even if lube film is marginal. In practice, you see longer life from bushings, chuck drivers, and the front-end housing — and shorter rebuild times.
How quickly can I get one to site?
Standard shipping takes about 5 working days worldwide from dispatch. If you have a down rig, ask about faster air freight options. We keep solid stock of these because we know they’re a routine wear item.
Do you have torque specs or install tips?
Installation is straightforward — no special tools. Clean the pocket, check for any burrs or debris, slide it into place, and reassemble. We can provide the drifter service manual specs for bolt torque and clearances if you need them, just ask.
Stock
Check Stock & Get a Quote
Tell us your drifter model or the part number stamped on your old slider, and we’ll confirm compatibility, availability, and a delivered price for your fleet.
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