3/4 Inch vs 1-1/4 Inch Rotary Hammers in 2026: Key Differences
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You are comparing a 34 inch vs 1 14 inch rotary hammer for heavy-duty construction tasks. Both tools are corded, industrial-grade rotary hammers designed for drilling into concrete and masonry. They share features like dual-switch operation and vibration control systems. The primary difference lies in their chuck size and bit system compatibility. This distinction affects the maximum drilling diameter and the type of bits you can use. Understanding these specs helps you choose the right tool for your specific project requirements.
Key differences
| Aspect | VEVOR 1-3/4" SDS-Max Rotary Hammer | ENEACRO 1-1/4-Inch Corded SDS-Plus Rotary Hammer |
|---|---|---|
| Chuck Size | 3/4 Inch | 1-1/4 Inch |
| Bit System | SDS-Max | SDS-Plus |
| Impact Energy | 25J | 7.4 joules |
| Weight | 38.6 pounds | 12.6 pounds |
| Modes | 3 modes | 4 functions |
Which one should you choose?
Choose VEVOR 1-3/4" SDS-Max Rotary Hammer if
- You need to drill large holes in concrete up to 1-3/4 inches
- You require high impact energy for heavy demolition or chipping
- You work with SDS-Max bits for professional-grade masonry tasks
Choose ENEACRO 1-1/4-Inch Corded SDS-Plus Rotary Hammer if
- You prefer a lighter tool that is easier to handle for extended periods
- You need to switch between drilling, hammering, and chisel modes frequently
- You work with smaller diameter holes using SDS-Plus bits
Verdict: The VEVOR model is built for heavy demolition and large-diameter drilling where power and stability are paramount. The ENEACRO model offers greater versatility and portability for tasks requiring smaller holes and frequent mode changes. Choose based on whether your project demands raw power or manageable versatility.
Chuck Size and Bit Compatibility
Chuck Size
The VEVOR model features a 3/4 inch chuck, which aligns with the SDS-Max bit system. This larger chuck size allows you to use bigger, more robust bits for heavy-duty demolition and large-diameter drilling in concrete. The ENEACRO tool uses a 1-1/4 inch chuck that is compatible with the SDS-Plus system. This standard size is widely available and suitable for general masonry work. Your choice depends on whether you need the extra power and bit availability of SDS-Max or the versatility of SDS-Plus.
Impact Energy
When comparing power, the VEVOR rotary hammer delivers 25 joules of impact energy. This high output is engineered for fast, precise results on tough concrete and metal projects. The ENEACRO model provides 7.4 joules of impact energy. While lower, this level is still sufficient for heavy-duty concrete work and general construction tasks. The VEVOR offers significantly more force for breaking through stubborn surfaces, whereas the ENEACRO provides adequate power for most standard drilling needs.
Maximum Drilling Diameter
The VEVOR tool can drill up to 1-3/4 inches in diameter. This capacity makes it ideal for creating large holes in concrete for anchor bolts or conduit. The ENEACRO model has a maximum drilling diameter of 1.25 inches for concrete. It also handles up to 0.5 inches in metal. If you frequently need to drill large holes, the VEVOR provides the necessary range. The ENEACRO is better suited for standard-sized holes common in residential and light commercial projects.
Weight
Weight is a critical factor for user fatigue during extended use. The VEVOR rotary hammer weighs 38.6 pounds. This substantial weight indicates a heavy-duty build but may cause quicker fatigue when holding the tool overhead or for long periods. The ENEACRO model weighs only 12.58 pounds bare machine. This lighter design allows for easier maneuverability and reduced strain on your wrists and arms. For tasks requiring prolonged handheld operation, the ENEACRO is the more practical choice.
Blows Per Minute
The ENEACRO rotary hammer achieves a maximum impact frequency of 4,200 BPM. This high rate of blows per minute allows for rapid drilling in concrete and masonry. The VEVOR model operates at a maximum of 2,300 BPM. While it has higher impact energy, the ENEACRO delivers blows more frequently, which can improve drilling speed in certain materials. If you prioritize speed over raw breaking power, the ENEACRO offers a technical advantage in this specific metric.
Which Rotary Hammer Should You Buy
Heavy demolition professionals needing large holes
The VEVOR model delivers 25J of impact energy, significantly higher than the competitor. It accepts SDS-Max bits up to 1-3/4 inches, allowing you to drill larger diameter holes in concrete. This power and capacity make it the superior choice for serious structural work and heavy demolition tasks.
DIYers or light contractors needing portability
The ENEACRO rotary hammer weighs only 12.58 lbs, making it much easier to handle and carry than the heavier VEVOR unit. Its 7.4J impact energy is sufficient for standard masonry work. The SDS-Plus system offers a wide range of affordable bits, perfect for occasional home improvement projects.
Users drilling into metal or wood too
The ENEACRO tool includes a drill-only mode, allowing you to use it as a standard drill for wood and metal. The VEVOR model only offers hammer, hammer-drill, and chisel modes. If you need one tool for mixed materials, the ENEACRO’s four-function capability provides greater versatility.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | VEVOR 1-3/4" SDS-Max Rotary Hammer | Heavy concrete drilling and demolition | Check price of VEVOR 1-3/4" SDS-Max Rotary Hammer on Amazon |
| 2 | ENEACRO 1-1/4-Inch Corded SDS-Plus Rotary Hammer | Heavy duty concrete drilling and demolition | Check price of ENEACRO 1-1/4-Inch Corded SDS-Plus Rotary Hammer on Amazon |
The products compared
VEVOR 1-3/4" SDS-Max Rotary Hammer
Best for: Heavy concrete drilling and demolition
- Chuck Size
- 1-1/4 Inch (what this guide is about)
- Power Source
- 13 Amp
- Impact Energy
- 25J
- Bit System
- SDS-Plus, SDS-Max
- Operating Modes
- 3 modes
- Blows Per Minute
- 0–2300 BPM
View on Amazon: VEVOR 1-3/4" SDS-Max Rotary Hammer Affiliate link
This VEVOR rotary hammer drill features a 1-3/4 inch SDS-Max chuck and a 13 amp motor. It delivers 25J of impact energy and operates in three modes. The tool reaches 175–350 RPM with up to 2300 BPM. It includes a carrying case and basic accessories. This heavy-duty unit suits professionals drilling large holes in concrete or performing demolition tasks.
Pros
- 25J impact energy for fast concrete drilling
- Three operation modes including hammer only
- 175–350 RPM and 2300 BPM speed
- Includes carrying case and basic bits
Cons
- 38.6 pounds is very heavy for overhead use
- 22 inches long reduces maneuverability in tight spaces
- Corded design limits range of motion
Good fit if
- You need to drill 1-3/4 inch holes in concrete
- You require high impact energy for demolition
- You work in fixed locations with power access
Skip if
- You need to drill holes larger than 1-3/4 inch
- You require a lightweight tool for overhead work
- You need a cordless tool for remote sites
Verdict: VEVOR 1-3/4 Inch SDS-Max Rotary Hammer delivers serious power for heavy concrete work. It fits professionals who need large hole capacity and do not mind the weight.
ENEACRO 1-1/4-Inch Corded SDS-Plus Rotary Hammer
Best for: Heavy duty concrete drilling and demolition
- Chuck Size
- 1-1/4 Inch (what this guide is about)
- Power Source
- 13 Amp
- Impact Energy
- 5.5 ft./lbs. (7.4 J)
- Bit System
- SDS-Plus
- Operating Modes
- 4 functions
- Blows Per Minute
- 4200 BPM
View on Amazon: ENEACRO 1-1/4-Inch Corded SDS-Plus Rotary Hammer Affiliate link
The ENEACRO ENRH3201 is a 13-amp corded rotary hammer with a 1-1/4 inch SDS-Plus chuck. It delivers 5.5 ft.-lbs. of impact energy and 4,200 BPM. This tool features four modes for drilling, hammering, or chiseling. It includes a safety clutch and anti-vibration handle. It suits users needing heavy-duty concrete work and masonry demolition.
Pros
- 13-amp motor provides 5.5 ft.-lbs. impact energy
- Four-function switch allows mode changes without power loss
- Safety clutch protects wrists from high torque
- Anti-vibration system reduces user fatigue
Cons
- SDS-Plus chuck limits bit size compared to SDS-Max
- 12.58 lb. bare weight is heavy for overhead use
- Corded design restricts mobility on large job sites
Good fit if
- You need high impact energy for thick concrete
- You require four distinct drilling and chiseling modes
- You work in fixed locations with power access
Skip if
- You require SDS-Max bits for large diameter holes
- You need cordless freedom for remote sites
- You prefer lightweight tools for extended overhead work
Verdict: ENEACRO 1-1/4 Inch SDS-Plus Rotary Hammer delivers high impact energy for heavy masonry tasks but requires a power outlet and handles SDS-Plus bits only.
Specifications side by side
| Spec | VEVOR 1-3/4" SDS-Max Rotary Hammer | ENEACRO 1-1/4-Inch Corded SDS-Plus Rotary Hammer |
|---|---|---|
| Power Source | 13 Amp | 13 Amp |
| Impact Energy | 25J | 5.5 ft./lbs. (7.4 J) |
| Chuck Size | 1-1/4 Inch, 1-3/4 in | 1-1/4 In. |
| Bit System | SDS-Plus, SDS-Max | SDS-Plus |
| Operating Modes | 3 modes | 4 functions |
| Blows Per Minute | 0–2300 BPM | 4200 BPM |
| Weight | 38.6 pounds | 12.58 lbs. |
| Variable Speed | Variable Speed | not stated |
| Included Tools | Drill Driver, Hammer Drill, Rotary Hammer | Drill Driver, Hammer Drill, Rotary Hammer |
| Bit Type | SDS-Plus | SDS-Plus |
| Dimensions | 22 × 12 × 5.1 inches | 15.4 × 10.2 × 4.53 inches |
| Size | 1-3/4 in | 13A |
| Color | Blue | Blue |
| Model | Z1C-DS-50K | ENRH3201 |
Frequently asked questions
Is a 3/4 inch rotary hammer strong enough for heavy demolition?
Yes, but it depends on the specific model. The VEVOR tool with a 3/4 inch chuck delivers serious power for heavy concrete work. It fits professionals who need large hole capacity. However, it weighs 38.6 pounds, which adds to the physical demand of demolition tasks.
What is the weight difference between these two rotary hammers?
The weight difference is significant for handheld use. The VEVOR 3/4 inch model weighs 38.6 pounds. The ENEACRO 1-1/4 inch model weighs 12.6 pounds. This makes the ENEACRO much easier to handle for extended periods, despite its larger chuck size.
Can I use SDS-Plus bits in a 3/4 inch chuck?
No, you cannot mix these systems. The VEVOR 3/4 inch chuck uses SDS-Max bits. The ENEACRO 1-1/4 inch chuck uses SDS-Plus bits. You must buy the correct bit type for each tool. Using the wrong bit will damage the chuck or the tool.
Which tool is better for drilling large diameter holes?
The VEVOR model is better for large holes. It accepts bits up to 1-3/4 inches. The ENEACRO model uses SDS-Plus bits, which are generally smaller. If you need to drill wide holes in concrete, the VEVOR’s larger capacity is the practical choice.
Do both tools require a power outlet?
Yes, both tools are corded. The VEVOR model is corded and requires a power outlet. The ENEACRO model is also corded. Neither tool is battery-powered. You must have access to electrical power at your work site to use either rotary hammer.
How does the size of the VEVOR rotary hammer compare?
The VEVOR tool is larger and heavier. It measures 22 inches in length and 12 inches in width. The ENEACRO model is more compact at 15.4 inches long. The VEVOR’s larger size accommodates its higher power and SDS-Max chuck system for heavy-duty tasks.
Is the ENEACRO suitable for professional heavy duty work?
It is suitable for heavy duty drilling but has limits. The ENEACRO delivers high impact energy for masonry tasks. However, it handles SDS-Plus bits only. It is less powerful than the VEVOR model. Choose it for general masonry rather than extreme demolition.