Description
Great Oak Curated Industrial Equipment:
Industrial Collection featuring components engineered for exceptional durability and operational performance.
Features & Details
- 8-inch Max Wet & Dry Drilling: Adapts up to 8-inch drill bits. Our standup core drilling machine with stand can perform wet and dry two modes drilling, and you can feel assured of accuracy when boring holes in a variety of surfaces with a 8 in / 20 cm diameter hole capacity. Attention: a industrial-grade 4.25in core bit is only included.
- Capable Coring Efficiency: A 2500W motor and 750RPM high-speed gearbox enable diversified drilling applications with adjustable operational parameters for specific material types.
Max Drilling Depth: 23.62 in / 60 cm.
Output Arbor Sizes:
- External Thread: 1-1/4" x 7 UNC
- Internal Thread: 5/8" x 11 UNC
- Expertly Designed for Security: Our diamond core drill rig integrates a secure clutch with an overload protection device that automatically trips when the drill bit becomes stuck or encounters resistance exceeding a specified threshold, thereby minimizing the risk of operator damage and injury during operations.
- Effortless Drilling: Our concrete core drill features a rustproof steel forged output shaft designed to withstand increased pressure, an upgraded one-touch water pipe connector ensuring stable water supply, and a thickened guide rail to enhance machine stability and minimize vibration.
- Heavy-Duty Concrete Drilling Rig
- Designed for precision drilling in reinforced concrete, red brick, marble, and other hard materials
- Wet & dry diamond core drilling capability meets professional standards
- Engineered for industrial applications beyond residential use
- Enables rapid installation of air conditioning units, kitchen piping, stair railings, and highway repairs
Technical Specifications
| Item Model Number | Z1Z-9230 |
|---|---|
| No-load Power | 1680W |
| Rated Power | 2500W |
| Speed | 750RPM |
| Drilling Diameter | 8 in / 20 cm Max |
| Drilling Depth | 23.62 in / 60 cm Max |
| Arbor Size | 1-1/4″ x 7 UNC & 5/8″ x 11 UNC |
| Drilling Method | Wet and Dry Drilling |
| Product Size | 36.41 x 15.15 x 14.64 in / 92.5 x 38.5 x 37.2 cm |
| Net Weight | 54.67 lbs / 24.8 kg |
Detailed Overview
8-inch Wet & Dry Core Drill Machine
Our diamond wet and dry drilling machine is suitable for a wide range of applications, including plumbing, electrical, HVAC, and construction projects. The heavy-duty but lightweight design makes it easy to carry and tackle a variety of materials, such as concrete, red brick, marble, etc.
The 2500W robust motor easily loosens the reinforced concrete wall with a rotary speed of 750RPM, widely used in road construction, home decoration, and Routine maintenance activities.
As the machine will work upside down, so water would unavoidable flow on to the drill machine. In this case, our drilling rig has a rustproof steel forged output shaft and quick-insert water pipe connector for a long-lasting water supply.
When the safety clutch is activated, it disengages the drill motor from the core bit, preventing the drill bit from rotating and reducing the risk of injury or damage to the machine.
Smooth alloy base support is lighter and steadier. It also means higher accuracy, good durability, and longer lifespan.
Note: Great Oak Industrial Supply Corp. specializes in sourcing high-performance industrial tools. Manufactured by VEVOR.



























Verified Customer –
Works great and great price
Verified Customer –
sought help with a complex business policy, and the agent provided thorough, easy-to-understand answers. The agent double-checked details to ensure accuracy, showing great attention to detail. This level of expertise made me feel confident in the solution.
Verified Customer –
I’ll admit I was skeptical when purchasing. These drills run about $1500 for a cheap or used one. This unit was well in my budget & came with multiple bits. Not expecting too much from the bits either I was pleasantly surprised by how well they cut. The only drawback to this unit is it does not have a clutch like most do. If it catches on anything like rebar it will take you for a ride, this can be averted by going slow & taking your time. I would recommend this drill if you’re in the market.
Verified Customer –
The product arrived well-packaged, and it works exactly as described. I’ll definitely shop from this store again
Verified Customer –
I was worried about shipping delays, but the package arrived 3 days earlier than estimated! Tracking updates were real-time and easy to follow, with no damage to the item.
Verified Customer –
Full disclosure- I have never used a core drill before. I needed to drill a 6” wide hole in a 10” thick concrete wall. All of the rentals (Home Depot, etc) were missing pieces of the mount/drill/you name it, and they were charging $200+ for a single day’s use. I found this drill and purchased a SALI 6” diamond tipped core bit. The instructions were somewhat lacking but eventually I got it all set up. I ditched the screws that “stabilize” the base and used 4x 1/4” diameter 4” long tapcon screws to anchor the base to my vertical wall. This thing is LOUD and honestly it kind of made me nervous. Use eye/ear/hand protection 100% of the time as well as a continuous(ish) stream of water to keep the tip wet/cool, it’s absolutely necessary. It took about an hour and a half to core through the 10” wall. Removing the concrete core piece from the core bit was INCREDIBLY difficult. I ended up having to buy a SDS plus chisel to completely fracture the piece of concrete for hole #2. Once I got the bit empty of the concrete plug I moved onto hole #2. This 2nd hole was unfortunately 9.5’ high and what turned out to be 14” thick. It was not a good day when I figured out it was much thicker than the first wall. After an hour and a half (and throwing my breaker a few times), I made it through the wall. The drill performed 100% the way I hoped it would and it was immediately thrown in the trash can after. This was honestly one of the most dangerous things I’ve ever done and I’ll never do it again. But as for the product- 10/10. Thank you for not making something that hurt me. Recommendations from my experience: – Mount the base to the wall using 1/4” tapcon screws at least 4” long – Use water (I used a generic spray bottle) throughout the drilling – Be prepared to spend an hour or more trying to remove the concrete plug if you have to drill more than one hole – Hire someone to do all of this because it’s incredibly dangerous
Verified Customer –
Great little machine, and for only slightly more than it would cost to rent a comperable unit from an equipment rental company, I now own it. Not sure what I’ll need it for in the future, but it very cleanly cut a 4″ hole through my basement wall, and it made light work of it. Super powerful and easy to use. I spent more time stopping to check how deep I had made it because it was cutting so fast.
Verified Customer –
had to drill a 6″ hole through 4′ grade beam with aftermarket extensions for a sewer line. took 4 hours but worked well.
Verified Customer –
All good so far, does a good job. Just as good as the 4000 dollar core machine. Would buy again
Verified Customer –
Excellent product for the price. Cored over 100 holes so far 6” deep . Definitely buy again.
Verified Customer –
sought help with a complex business policy, and the agent provided thorough, easy-to-understand answers. The agent double-checked details to ensure accuracy, showing great attention to detail. This level of expertise made me feel confident in the solution.
Verified Customer –
I’ll admit I was skeptical when purchasing. These drills run about $1500 for a cheap or used one. This unit was well in my budget & came with multiple bits. Not expecting too much from the bits either I was pleasantly surprised by how well they cut. The only drawback to this unit is it does not have a clutch like most do. If it catches on anything like rebar it will take you for a ride, this can be averted by going slow & taking your time. I would recommend this drill if you’re in the market.
Verified Customer –
The product arrived well-packaged, and it works exactly as described. I’ll definitely shop from this store again
Verified Customer –
I was worried about shipping delays, but the package arrived 3 days earlier than estimated! Tracking updates were real-time and easy to follow, with no damage to the item.
Verified Customer –
Full disclosure- I have never used a core drill before. I needed to drill a 6” wide hole in a 10” thick concrete wall. All of the rentals (Home Depot, etc) were missing pieces of the mount/drill/you name it, and they were charging $200+ for a single day’s use. I found this drill and purchased a SALI 6” diamond tipped core bit. The instructions were somewhat lacking but eventually I got it all set up. I ditched the screws that “stabilize” the base and used 4x 1/4” diameter 4” long tapcon screws to anchor the base to my vertical wall. This thing is LOUD and honestly it kind of made me nervous. Use eye/ear/hand protection 100% of the time as well as a continuous(ish) stream of water to keep the tip wet/cool, it’s absolutely necessary. It took about an hour and a half to core through the 10” wall. Removing the concrete core piece from the core bit was INCREDIBLY difficult. I ended up having to buy a SDS plus chisel to completely fracture the piece of concrete for hole #2. Once I got the bit empty of the concrete plug I moved onto hole #2. This 2nd hole was unfortunately 9.5’ high and what turned out to be 14” thick. It was not a good day when I figured out it was much thicker than the first wall. After an hour and a half (and throwing my breaker a few times), I made it through the wall. The drill performed 100% the way I hoped it would and it was immediately thrown in the trash can after. This was honestly one of the most dangerous things I’ve ever done and I’ll never do it again. But as for the product- 10/10. Thank you for not making something that hurt me. Recommendations from my experience: – Mount the base to the wall using 1/4” tapcon screws at least 4” long – Use water (I used a generic spray bottle) throughout the drilling – Be prepared to spend an hour or more trying to remove the concrete plug if you have to drill more than one hole – Hire someone to do all of this because it’s incredibly dangerous
Verified Customer –
Great little machine, and for only slightly more than it would cost to rent a comperable unit from an equipment rental company, I now own it. Not sure what I’ll need it for in the future, but it very cleanly cut a 4″ hole through my basement wall, and it made light work of it. Super powerful and easy to use. I spent more time stopping to check how deep I had made it because it was cutting so fast.
Verified Customer –
had to drill a 6″ hole through 4′ grade beam with aftermarket extensions for a sewer line. took 4 hours but worked well.
Verified Customer –
All good so far, does a good job. Just as good as the 4000 dollar core machine. Would buy again
Verified Customer –
Excellent product for the price. Cored over 100 holes so far 6” deep . Definitely buy again.
Verified Customer –
Nice and light. Well made. Nice tool