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Epiroc 3128314012 HOLDER SET ATLAS COPCO Boomer 281 Simba rock drilling rig parts 3128 3140 12

Holder set that keeps your drill string in line

The Epiroc 3128314012 holder set bolts onto Atlas Copco Boomer 281, Simba H1257, and other rigs. It's an aluminum body with a polyurethane insert that guides the drill bar. That insert takes the wear instead of your feed beam, so you replace a $200 part instead of a $2,000 one. Machined to OEM specs, it fits without modification. We stock these in Germany and ship worldwide in 5 working days.

  • Aluminum body, polyurethane wear insert
  • Fits Boomer 281, 282, Simba H1257, and more
  • In stock, ships in 5 days
  • OEM-equivalent, not a copy
Epiroc 3128314012 HOLDER SET ATLAS COPCO Boomer 281 Simba rock drilling rig parts 3128 3140 12
#385
Highlights
Key Advantages
  • Polyurethane insert keeps the drill steel aligned and protects your feed beam from wear.
  • Anodized aluminum body won't rust, even with daily exposure to water and dust underground.
  • Bolts onto existing holes. No drilling, no grinding, no swearing.
  • Replace the holder, not the whole cradle, when the guide wears out.
  • Works with Boomer 281, 282, Simba H1257, and other rigs listed in the compatibility table.
Use Cases
Applications
  • Underground production drilling with Boomer 281 and similar jumbos.
  • Longhole drilling with Simba H1257 in sublevel stoping.
  • Tunneling and face drilling where accurate hole placement matters.
  • Rebuilding worn feed beams on older rigs to extend service life.
  • Quarry and construction drilling with Atlas Copco surface rigs that use the same feed system.
Specs
Technical Specifications
Part number3128314012 (also listed as 3128 3140 12)
What it isHolder set for drill steel guide
FitsAtlas Copco / Epiroc Boomer 281, 282, 104, 353, K111, K41, K41X, L2D, M2D, S1D, XE3, XL3, Simba H1257, Simba S7D
Body materialAnodized aluminum
Wear insertPolyurethane, yellow
Corrosion resistanceAnodized coating, salt spray tested to ISO 9227
Temperature range-25°C to +120°C
Weight1.5 kg (each set)
MountingBolt-on, uses existing holes
OEM cross referenceEpiroc 3128314012, Atlas Copco 3128314012
Details
Detailed Description
Brand :Epiroc
Part No. :3128314012
Description :Holder Set
Use in :Boomer 104 , Boomer 281 , Boomer 281dh , Boomer 282 , Boomer 353 , Boomer K111 , Boomer K41 , Boomer K41x , Boomer L2d , Boomer M2d , Boomer S1d , Boomer Xe3 , Boomer Xl3 , Simba H1257 , Simba S7d
Weight:1.5kg
In stock

Epiroc 3128314012 HOLDER SET ATLAS COPCO Boomer 281 Simba rock drilling rig parts 3128 3140 12

3128314012 HOLDER SET ATLAS COPCO
The 3128314012 Holder Set Atlas Copco is an essential mechanical component designed to deliver unmatched precision, stability, and strength in the heavy-duty drilling operations of Atlas Copco machines. This holder set is specifically engineered to support, align, and secure critical drilling tools in place, ensuring superior accuracy and vibration control during demanding industrial applications.

As part of the Atlas Copco hydraulic and pneumatic drilling assembly, the 3128 3140 12 Holder Set Atlas Copcofunctions as a vital connection interface between the drilling head and the guiding system. Manufactured to OEM-equivalent standards, it provides exceptional tolerance accuracy, excellent wear resistance, and reliable long-term performance , even under continuous high-impact usage.

a global leader in heavy machinery parts distribution, this holder set offers guaranteed OEM compatibility, high-grade materials, and worldwide delivery within 5 working days.

Function and Purpose of the 3128314012 Holder Set Atlas Copco
Precision Support for Drilling Assemblies
In any Atlas Copco rock drill, stability and accuracy are paramount. The 3128314012 Holder Set Atlas Copco serves as a structural element that holds, guides, and aligns the drilling bar or tool during motion. By maintaining correct geometry and reducing misalignment, it prevents premature tool wear and improves drilling accuracy.

This holder set plays a pivotal role in transmitting operational forces from the machine’s drive mechanism to the drill string. It ensures consistent motion transfer, minimizes vibration, and supports the drilling system against lateral and torsional stresses.

Optimized Performance in Harsh Conditions
Designed for both surface and underground drilling environments, the 3128 3140 12 Holder Set Atlas Copco performs reliably under constant exposure to dust, rock fragments, hydraulic pressure, and high temperature. Its lightweight yet robust structure allows efficient energy transfer without compromising rigidity or safety.

Its combination of aluminum alloy housing and polyurethane wear plate reduces friction between contacting surfaces, ensuring a smooth operation and longer service intervals.

Technical Specifications
Specification Details
Part Number 3128314012 / 3128 3140 12
Component Name Holder Set
Compatible Brand Atlas Copco
Material Composition High-strength aluminum alloy with polyurethane guide insert
Surface Treatment Anti-corrosion anodized coating
Mounting Type Bolt-through bracket system
Color Silver aluminum body with yellow polymer edge
Temperature Resistance -25°C to +120°C
Operating Conditions Vibration, dust, impact, and hydraulic pressure exposure
Weight Approx. 1.20 KG
Material and Build Quality
Lightweight Strength with Industrial Durability
The 3128314012 Holder Set Atlas Copco is constructed from anodized aluminum, providing the perfect balance between lightness and mechanical strength. This ensures that the drilling system’s overall weight is minimized while maintaining structural integrity under pressure.

The yellow polyurethane surface insert acts as a wear-resistant guide rail, designed to absorb friction between moving parts such as the feed beam and drilling carriage. It not only prevents metal-on-metal contact but also enhances movement precision while reducing noise and vibration.

Engineering Precision
Each holder set undergoes a rigorous CNC machining process to achieve micron-level accuracy in alignment and fitting. The slots, mounting holes, and guide grooves are all calibrated to meet Atlas Copco’s strict mechanical tolerances, ensuring seamless integration with the original drilling system.

This precision manufacturing process ensures:

Exact bolt alignment for easy installation

Perfect surface flatness for stability under dynamic load

Extended operational life in high-cycle applications

Performance and Advantages
Maximum Stability in Drilling Operations
The 3128314012 Holder Set Atlas Copco maintains tool alignment under intense mechanical stress. During operation, it eliminates lateral tool movement and unwanted vibration that could cause uneven drilling or mechanical fatigue. The result is smoother, more controlled drilling motion and extended tool life.

Extended Component Longevity
Thanks to its specialized materials, this holder set provides superior abrasion and corrosion resistance. The polyurethane insert is engineered to resist hydraulic oil exposure and heavy particulate matter, while the anodized aluminum frame prevents oxidation and wear caused by constant environmental exposure.

Easy Maintenance and Replacement
The design of the 3128 3140 12 Holder Set Atlas Copco enables straightforward installation and removal. Its lightweight construction allows technicians to replace it quickly during scheduled maintenance without disassembling major machine components.

Maintenance Benefits:

Simplified part changeover

Reduced service time

Minimal tool recalibration needed after installation

Compatibility with Atlas Copco Models
The 3128314012 Holder Set Atlas Copco is designed for compatibility with a wide range of Atlas Copco drilling and rock excavation machinery.

Compatible Atlas Copco Models Include:

Atlas Copco ROC D7 and D9 Drilling Rigs

Atlas Copco FlexiROC T30, T35, T40, and T45

Atlas Copco SmartROC T45 and T55

Atlas Copco Boomer L2, M2D, and M1C Hydraulic Drifters

Atlas Copco COP 1838 and COP 2560 Rock Drills

Atlas Copco H104 Drilling System Series

Atlas Copco Hydraulic Feed Mechanisms with Aluminum Support Rails

(Compatibility should be verified against the official Atlas Copco service manual or by contacting 3GEN Export technical support for cross-reference.)

Installation and Maintenance
Installation Guidelines
Clean all contact surfaces before installation.

Align the 3128314012 Holder Set Atlas Copco with the corresponding feed rail and ensure bolt holes match precisely.

Secure with OEM-recommended torque specifications.

Apply light lubrication to the polyurethane interface if necessary.

Test for free movement of the drilling assembly before full operation.

Maintenance Schedule
To ensure long-term performance, it is recommended to:

Inspect the polyurethane guide for wear every 500 operating hours.

Clean the holder set regularly to remove dust and debris.

Tighten bolts to correct torque to prevent play in the assembly.

Replace when friction wear exceeds 1.5 mm on the yellow polymer surface.

By following these steps, the 3128 3140 12 Holder Set Atlas Copco maintains optimal efficiency and minimizes the risk of mechanical misalignment.

Advantages of the 3128314012 Holder Set Atlas Copco
OEM Compatibility: Designed for seamless fit with multiple Atlas Copco drilling systems.

High Structural Strength: Lightweight yet extremely durable aluminum frame.

Anti-Wear Surface: Polyurethane insert ensures low friction and minimal abrasion.

Corrosion-Resistant Finish: Anodized coating for long-term surface protection.

Noise and Vibration Reduction: Optimized geometry reduces resonance during operation.

Easy Installation: Plug-and-play mounting system for quick part replacement.

Extended Service Life: Precision-machined design enhances endurance and reliability.

These characteristics make this holder set ideal for maintenance engineers, drilling contractors, and service providers seeking durability and performance without compromising on cost-efficiency.

Application Areas
The 3128314012 Holder Set Atlas Copco finds application across multiple heavy industries:

Mining and Quarrying: Stabilizes drilling equipment in continuous rock excavation.

Construction: Ensures alignment of drilling components in pile foundations.

Tunneling: Provides reliable support for drifters in underground excavation machinery.

Geotechnical Operations: Maintains drilling precision in exploration and sampling systems.

Its high-tolerance build makes it suitable for use in both static and mobile rigs, ensuring consistent reliability under all working conditions.

Key Testing Procedures
Dimensional Inspection: Micron-level precision verified by digital measurement tools.

Load Bearing Test: Simulated dynamic loading to ensure stability under torque and vibration.

Wear Resistance Test: Evaluated under 1,000-hour friction cycle conditions.

Corrosion Test: 72-hour salt spray compliance (ISO 9227 standard).

Material Certification: Confirmed mechanical strength and composition according to ISO 9001.

Certification
Each component is accompanied by a 3GEN Export OEM Quality Certificate, confirming full compliance with European and international industrial standards.

Packaging and Delivery
Every 3128314012 Holder Set Atlas Copco is packaged with industrial-grade protection to prevent damage during transport.

Packaging Details:

Anti-corrosive coating applied to metal surface before shipment

Polyurethane edges wrapped in shock-absorbent foam

Double-layered export carton box

Labelled with part number and QR code for easy warehouse tracking

Shipping Information:

Weight: 3.20 KG per piece

Dispatch Time: 5 working days worldwide via express logistics
FAQ
FAQ
Will this holder set fit my Boomer 281?
Yes, the 3128314012 is listed for Boomer 281 (and 281DH). It's also used on Boomer 282, 353, K41, L2D, M2D, S1D, XE3, XL3, and Simba H1257. If you're unsure, send us your machine serial number and we'll check.
How often do I need to replace the polyurethane insert?
Under normal conditions, check it every 500 hours. If the yellow part is worn more than 1.5 mm, replace the insert or the whole set. On a typical production rig, that's about every 4-6 months, depending on rock hardness and drilling hours.
Is this an original Epiroc part?
No, it's not branded Epiroc. It's manufactured to the same specifications by an independent supplier. It fits and functions like the original, and it's in stock for immediate shipping. If you need genuine Epiroc, we can quote that too, but lead time is usually 2-3 weeks.
What's the difference between this holder set and the original Atlas Copco part?
Functionally, none. The dimensions, materials, and tolerances are the same. The main difference is the brand name and the price. This holder set costs about 40% less than the OEM part, and we ship it in 5 days instead of 3 weeks.
Can I just replace the polyurethane insert instead of the whole holder?
On some versions the insert is bonded to the aluminum and can't be replaced separately. This holder set comes as a complete unit. If your feed beam has a different style (bolt-on insert), we can source that too. Just ask.
Do you ship to Australia / Canada / South Africa?
We ship worldwide via DHL or FedEx. Delivery is typically 5 working days to most countries. We handle customs paperwork for mining equipment parts, so you don't have to.
Stock
Check Stock & Get a Quote
Send us your machine model and part number. We'll confirm compatibility and give you a quote with shipping.