High-Performance Electric Hammer Supplier

BOSI Tools is an electric hammer manufacturer from China, offering both the Safety Clutch Electric Hammer and the Conventional Electric Hammer, specifically designed for heavy-duty construction tasks such as concrete drilling, brick wall slotting, and stone breaking. For model selection or customized configurations tailored to specific application scenarios, please contact our professional team.

Working Principle

The core operating logic of BOSI electric hammers is to convert the motor's rotary motion into a compound action of piston reciprocating impact and drill bit rotation. Once powered, a high-quality pure copper motor drives a crank-and-connecting-rod mechanism through a gear set, causing the piston to reciprocate at high speed within the cylinder.

As the piston compresses air, the air cushion propels the striker to forcefully hit the beat piece, which then transmits the impact force to the tail of the drill bit, generating an axial pulse strike. Simultaneously, another power path from the motor drives the chuck rotation via bevel gears, causing the drill bit to rotate synchronously.

The Safety Clutch Electric Hammer incorporates an additional torque overload protection mechanism in the drive train: when the drill bit encounters rebar and becomes stuck, the clutch instantly disengages, cutting off power transmission and achieving an "auto-stop on rebar" function. This both protects the operator's wrist from recoil and prevents gearbox tooth breakage.

The 1150W Safety Clutch model combines a speed of 960 r/min with this clutch mechanism, while the 900W Conventional Electric Hammer flexibly switches between three functions: hammering, drilling, and chiseling. Both models utilize a spring-cushioned structure to absorb housing recoil, concentrating impact energy on the drill bit rather than transmitting it to the grip area.

Common Problems During Operation and Solutions

Our Electric Hammer Products vs. Other Brands: Why Choose BOSI?

The core competitiveness of BOSI electric hammers lies in implementing key configurations—such as safety clutch protection, pure copper motors, and multi-mode functionality—at a more pragmatic price, while also maintaining the same level of detail in heat dissipation structure and vibration damping without any downgrade.

How to Choose the Right Electric Hammer?

Make your decision between the Safety Clutch Electric Hammer and the Conventional Electric Hammer based on practical usage scenarios:

1. Consider Jobsite Safety Needs

If drilling into concrete structures with dense rebar, or if the internal reinforcement layout is uncertain during renovation of older buildings, prioritize the Safety Clutch Electric Hammer.

The 1150W spline drive model automatically stops rotating when it hits rebar, preventing recoil injuries and making it suitable for tasks with high safety demands.

The Conventional Electric Hammer lacks this mechanism and is better suited for standardized drilling on new construction sites where the rebar positions are clearly known.

2. Consider Functional Requirements

Do you need just a single drilling function, or multiple scenario switching? The dual-function Safety Clutch Electric Hammer focuses on rotary hammer drilling and safety protection, making it suitable for dedicated drilling tasks.

The 900W three-function Conventional Electric Hammer adds an electric chiseling function, allowing it to handle light demolition and slotting as well, offering a wider range of applications. Its round shank two-flat two-slot chuck also makes changing bits more convenient.

3. Consider Power and Drilling Capacity

Both models have a 26mm drilling diameter capacity. The 1150W Safety Clutch model emphasizes sustained power output under safety protection, with a speed of 960 r/min matched with spline drive bits.

The 900W Conventional model, with its 1150 r/min speed and three functions, delivers excellent efficiency for everyday home renovation and light commercial work.

4. Consider Grip and Vibration Damping

The Safety Clutch Electric Hammer is equipped with a spring-cushioned structure and an anti-slip handle, providing noticeable vibration reduction during prolonged drilling.

The Conventional Electric Hammer also features an ergonomic grip design and is lightweight and flexible.

Safety Precautions for Use

1. Personal Protective Equipment

When operating an electric hammer, safety goggles and a dust mask must be worn. Concrete drilling generates a large amount of dust; it is recommended to use a dust extraction system in enclosed spaces. Wear earplugs to protect against prolonged exposure to impact noise.

2. Bit Inspection and Installation

Before use, confirm that the carbide tip of the drill bit is free of cracks and the shank is not bent. Insert spline drive bits into the chuck fully and confirm they are locked. For round shank bits with two flats and two slots, align them with the detent and rotate to click into place. The use of non-specialized bits is strictly prohibited.

3. Note for the Safety Clutch Model

The automatic stop of the Safety Clutch Electric Hammer upon hitting rebar is a protective action. When this occurs, immediately release the switch, manually reverse the bit to withdraw it, and never forcefully hold the switch attempting to continue drilling after the clutch has disengaged. Otherwise, repeated disengagement impacts will accelerate wear on the clutch mechanism.

4. Power Supply and Grounding

For 220V~ models, ensure proper grounding. For outdoor or wet conditions, always use a leakage protector. Keep the power cord behind you during operation to prevent it from being damaged by the rotating bit or falling objects.

5. Operating Posture

Hold the tool with both hands, keep your feet apart for stability, and maintain the drill bit perpendicular to the wall when drilling. Avoid standing with your weight shifted to one side on a ladder; for work at heights, wear a safety harness.

6. Duty Cycle and Heat Dissipation

Heavy-load drilling should not exceed 15 minutes of continuous operation. Stop the tool and let it run idle to assist cooling. Regularly clean the ventilation slots and the chuck area to keep the heat dissipation pathways clear.

7. Switching Modes