Premium Laser Welded Three-Piece Concrete Core Drill Bit 1–16 in
Premium Quality · Laser-Welded Diamond Segments · Three-Piece Construction · Replaceable Cutting Crown · 1–16-inch Diameter Range · 10mm Segment Height
The Alskar Premium Three-Piece Laser Welded Concrete Core Drill Bit combines a machine adapter, a removable middle barrel and a replaceable diamond cutting crown. This Premium-grade series features 10mm-high diamond segments laser-welded to the cutting crown and covers diameters from 1 to 16 inches. Its threaded modular construction supports cutting-crown replacement and configurations using compatible extension barrels. Barrel length and assembled dimensions are confirmed with the selected configuration. Send your required diameter, drilling depth and machine details for a quotation.
1. Product Overview
The Alskar Premium Laser Welded Three-Piece Concrete Core Drill Bit is a Premium-grade modular system for concrete coring. It combines three detachable components: the machine adapter, the middle barrel and the diamond cutting crown. Threaded joints connect these sections into the complete assembly.
The 10mm-high diamond segments are laser-welded to the steel body of the cutting crown. Laser welding describes the segment attachment method; the adapter, barrel and complete cutting crown remain separate components joined by threads.
The removable cutting crown allows the worn cutting section to be replaced while serviceable, compatible barrel and adapter components are retained. This gives contractors a practical way to manage wear parts without automatically replacing the complete assembly.
For deeper openings, a configuration using compatible extension barrels can be reviewed for the required reach. The extension arrangement must be matched to the bit diameter, thread system, drill stand travel and machine capacity. Usable drilling depth depends on the complete setup and core-removal requirements.
The diameter range is 1–16 inches, with a 10mm diamond segment height and size-specific segment widths. Middle barrel length, assembled overall length and effective drilling depth are separate specifications and are confirmed for the selected configuration.
To request a quotation, provide the required hole diameter, drilling depth, concrete conditions, machine model and connection details. For replacement components, include the existing assembly dimensions and thread information so the matching parts can be identified.
2. Key Features
Premium Quality Grade
A Premium-grade option in the Alskar concrete core bit range, combining a modular assembly with a replaceable cutting crown.
Laser-Welded Diamond Segments
The diamond segments are laser-welded to the steel cutting crown, while the crown itself connects to the barrel through a detachable threaded joint.
Three-Piece Threaded Construction
A separate machine adapter, middle barrel and cutting crown form the modular assembly. The sections can be dismantled for component inspection and replacement.
Replaceable Diamond Cutting Crown
Replace the worn cutting section while retaining compatible barrel and adapter components that remain fit for service.
Configurable Barrel Arrangement
Discuss a matching extension-barrel arrangement for the required working reach. Confirm the component threads, assembled dimensions and drilling equipment before ordering.
10mm Segment Height
The series uses 10mm-high diamond segments, with segment width specified according to the selected diameter.
1–16-Inch Diameter Range
Select the diameter for the required concrete opening. Provide the actual required hole size when a project uses metric dimensions or a specific tolerance.
Configuration Support
Send your diameter, depth, machine interface and quantity for a complete-assembly or replacement-component quotation.
3. Applications
- Concrete wall and floor coring.
- Pipe, conduit and building-services openings.
- Deeper concrete openings requiring a reviewed extension-barrel arrangement.
- Coring projects where replaceable cutting sections are preferred.
Provide the concrete conditions and any anticipated steel reinforcement when requesting a suitable cutting-crown specification.
4. Components & Connection Matching
| Component | Function |
|---|---|
| Machine Adapter / Coupling | Connects the modular assembly to the drilling machine. |
| Middle Barrel | Forms the main tubular body between the adapter and cutting crown. |
| Diamond Cutting Crown | Carries the diamond segments and can be removed as a separate wear component. |
There are two different connection requirements: the machine-side connection and the large-diameter threads joining the modular components. A matching machine spindle thread does not by itself establish compatibility between barrels, adapters and cutting crowns from different systems.
For a replacement-part inquiry, provide the component diameter, thread diameter and pitch, thread orientation, engagement details, and a clear photograph or drawing of the mating parts.
5. Fixed Specifications
| Item | Specification / Entry Status |
|---|---|
| Construction | Three-Piece Threaded Modular Assembly |
| Product Components | Machine Adapter + Middle Barrel + Diamond Cutting Crown |
| Diameter Range | 1–16 in |
| Segment Height | 10mm / approximately .394 in |
| Segment Width | Size specific; see table below |
| Middle Barrel Length | To be confirmed for the supplied configuration |
| Cutting Crown Length | To be confirmed; separate from segment height |
| Assembled Overall Length | To be confirmed after assembly |
| Effective Drilling Depth | Confirm for the complete configuration and equipment |
| Machine Connection | Confirm with order |
| Intercomponent Threads | System specific; confirm matching specification |
| Steel Barrel Wall Thickness | Not supplied; do not use segment width |
| Quality Grade | Premium |
| Segment Attachment | Laser Welded — diamond segments to cutting crown |
| Cutting Method | Internal: not yet confirmed for this product |
6. Size Specifications — Working Table
| Diameter | Inch-to-mm Reference | Segment Width | Segment Height |
|---|---|---|---|
| 1″ | 25.4mm | .140″ | 10mm |
| 2″ | 50.8mm | .140″ | 10mm |
| 2.5″ | 63.5mm | .140″ | 10mm |
| 3″ | 76.2mm | .150″ | 10mm |
| 3.5″ | 88.9mm | .150″ | 10mm |
| 4″ | 101.6mm | .155″ | 10mm |
| 4.5″ | 114.3mm | .155″ | 10mm |
| 5″ | 127.0mm | .155″ | 10mm |
| 6″ | 152.4mm | .180″ | 10mm |
| 7″ | 177.8mm | .180″ | 10mm |
| 8″ | 203.2mm | .180″ | 10mm |
| 10″ | 254.0mm | .180″ | 10mm |
| 12″ | 304.8mm | .180″ | 10mm |
| 14″ | 355.6mm | Confirm with configuration | 10mm |
| 16″ | 406.4mm | Confirm with configuration | 10mm |
The metric column is an arithmetic conversion of the inch designation, not a separate nominal metric product series or a tolerance statement. Specify the actual hole diameter required by the project.
7. FAQs
Which part is laser-welded?
The diamond segments are laser-welded to the steel cutting crown. The machine adapter, middle barrel and cutting crown connect through detachable threaded joints.
What does three-piece mean?
It describes one core drilling assembly made from a machine adapter, a middle barrel and a cutting crown. It does not mean a pack of three complete drill bits.
Can the cutting crown be replaced separately?
The cutting crown is detachable. A replacement must match the barrel diameter and mating thread specification. Confirm the required part and its availability with Alskar.
What is the standard barrel length?
Barrel length is confirmed with the selected configuration. Tell us your required drilling depth and available machine clearance so the assembly can be specified correctly.
Can extension barrels be used for deeper drilling?
A compatible extension arrangement can be reviewed for the job. The achievable working depth depends on the assembled configuration, drilling equipment, concrete conditions and core-removal plan.
Will parts from another three-piece system fit?
Compatibility must be checked. Machine-side spindle threads and the larger threads between modular components are different interfaces. Supply drawings or measurements of the mating components for a replacement inquiry.
Does the 10mm specification describe the crown length?
No. It describes the diamond segment height. The complete cutting crown includes its steel body and has a separate overall length.
What should I include in a quotation request?
Send the required hole diameter, drilling depth, material conditions, machine model, connection details, quantity and whether you need a complete assembly or a replacement component.
| Diameter | 1″, 2″, 2.5”, 3”, 3.5”, 4”, 4.5”, 5”, 6”, 7”, 8”, 10”, 12”, 14”, 16” |
|---|---|
| Construction | Three-Piece / Modular |
| Application Material | Concrete |
| Segment Height | 10mm |
| Segment Width | Size specific |
| Middle Barrel Length | 12、24、36、48 inch |
| Machine Connection | Confirm with order |
| Cutting Crown | Replaceable |
| Intercomponent Threads | Matching system required |
| Quality Grade | Premium |
| Segment Attachment | Laser Welded |
| Cutting Method | Wet |

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