Introduction
This manual provides detailed instructions for the safe and efficient operation, setup, and maintenance of your Einhell TE-RH 28/1 5F Rotary Hammer Drill. Please read this manual thoroughly before using the tool to ensure proper handling and to prevent injury or damage.

Image: The Einhell TE-RH 28/1 5F Rotary Hammer Drill shown with its E-Box carrying case.
Safety Instructions
WARNING: Read all safety warnings, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.
- Always wear appropriate personal protective equipment, including safety glasses, hearing protection, and gloves.
- Ensure the work area is clean and well-lit. Cluttered or dark areas invite accidents.
- Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
- Always disconnect the plug from the power source before making any adjustments, changing accessories, or storing power tools.
- Secure the workpiece. Use clamps or a vise to hold the workpiece. This is safer than using your hand and it frees both hands to operate the tool.
- Maintain the tool. Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the tool’s operation. If damaged, have the tool repaired before use.
Product Features
The Einhell TE-RH 28/1 5F Rotary Hammer Drill is designed for versatility and power, offering multiple functions for various tasks.
- Five Functions: This tool provides screwdriving, drilling, hammer drilling, and chiseling with or without lock, making it suitable for a wide range of applications.
- Powerful Performance: With 950 watts of power, the hammer drill delivers 3 joules of impact energy and a drilling capacity of 28 mm in concrete. The pneumatic impact mechanism ensures continuous propulsion even in tough materials.
- Two-Speed Gearbox: The two-speed gearbox is designed for various applications: the first gear is ideal for screwdriving, while the second gear is for drilling.
- SDS-plus Tool Holder: The robust SDS-plus tool holder with a semi-automatic system allows for quick and easy tool changes.
- Central Position Switch: Functions are selected via a central position switch for quick and intuitive mode changes.
- Electronic Speed Control: Electronic speed control allows for precise power application tailored to the material and application.
- Adjustable Depth Stop: The solid metal depth stop is continuously adjustable for precise drilling depth.
- Comfortable Handling: The continuous operation lock provides comfortable and simple working during prolonged use. Large soft-grip surfaces ensure a pleasant feel and a firm, secure hold.
- E-Box Storage: The tool comes in a practical E-Box for transport and storage, ensuring organization and easy access.

Image: Icon indicating the tool's 5 functions.

Image: Icon indicating SDS-plus chuck compatibility.

Image: Icon indicating electronic speed control.
Setup
Attaching the Auxiliary Handle and Depth Stop
- Loosen the auxiliary handle by turning it counter-clockwise.
- Slide the auxiliary handle onto the tool's collar.
- Insert the depth stop into the designated hole on the auxiliary handle.
- Adjust the handle to a comfortable working position and tighten it securely by turning clockwise.

Image: The auxiliary handle and depth stop attached to the drill.
Inserting SDS-plus Drill Bits/Chisels
- Clean the shank of the SDS-plus tool and apply a thin layer of grease.
- Push the tool into the SDS-plus chuck with a slight twisting motion until it locks into place.
- Pull the tool to check if it is securely locked. A slight axial play is normal and necessary for the hammer function.

Image: Close-up view of the SDS-plus chuck mechanism.
Using the Additional Chuck for Standard Drill Bits
For drilling without impact or for screwdriving, you can use the included additional chuck with standard cylindrical shank drill bits.
- Insert the SDS-plus adapter of the additional chuck into the SDS-plus tool holder as described above.
- Open the jaws of the additional chuck by turning the chuck sleeve.
- Insert the drill bit or screwdriver bit into the chuck.
- Tighten the chuck sleeve firmly to secure the bit.

Image: The additional chuck with its SDS-plus adapter, used for standard drill bits.
Operating Instructions
Selecting Operating Mode
The central position switch allows you to select one of the five operating modes:
- Drilling (without impact): For drilling in wood, metal, or plastics.
- Hammer Drilling: For drilling in concrete, masonry, and stone.
- Chiseling (with lock): For light chiseling work where the chisel needs to be fixed in a specific position.
- Chiseling (without lock): For general chiseling work allowing the chisel to rotate freely.
- Screwdriving: For driving and removing screws. Use the additional chuck for this function.

Image: Close-up of the mode selector switch on the side of the drill.
Speed Control
The electronic speed control allows you to adjust the rotational speed and impact rate. Use the thumbwheel to pre-select the desired speed. The trigger switch controls the actual speed; pressing it further increases the speed.

Image: Detail of the electronic speed control dial and trigger.
Depth Stop Adjustment
To set the drilling depth, loosen the auxiliary handle, adjust the depth stop to the desired length, and then re-tighten the auxiliary handle. This prevents drilling deeper than necessary.

Image: Close-up of the adjustable metal depth stop.
General Operation Tips
- Always hold the tool firmly with both hands using the main handle and the auxiliary handle.
- Apply steady, even pressure. Do not force the tool.
- For hammer drilling, allow the tool's impact mechanism to do the work.
- When drilling into walls, always check for hidden electrical wires or pipes before drilling.

Image: A user demonstrating proper two-handed operation of the rotary hammer drill.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your rotary hammer drill.
- Cleaning: After each use, clean the tool housing with a soft, damp cloth. Do not use aggressive cleaning agents. Keep ventilation openings clear.
- Chuck Maintenance: Regularly clean the SDS-plus chuck and apply a thin layer of special grease to the tool shanks to ensure smooth operation and prevent wear.
- Carbon Brushes: If the motor sparks excessively, have the carbon brushes checked by a qualified technician.
- Storage: Store the tool in its E-Box in a dry, dust-free place, out of reach of children.
- Inspection: Periodically inspect the power cord for damage. If damaged, have it replaced by a qualified professional.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start. | No power supply; damaged cable; faulty switch. | Check power connection. Inspect cable for damage. Contact service if switch is faulty. |
| Hammer function not working. | Mode selector incorrect; internal mechanism fault. | Ensure mode selector is set to hammer drilling or chiseling. Contact service if problem persists. |
| Excessive vibration or noise. | Worn drill bit/chisel; loose components; internal damage. | Replace worn accessories. Check for loose parts. Contact service for internal issues. |
| Tool overheats. | Overloading; blocked ventilation slots; prolonged use. | Reduce load. Clear ventilation slots. Allow tool to cool down. |
Specifications
| Specification | Value |
|---|---|
| Brand | Einhell |
| Item Model Number | 4257972 |
| Part Number | TE-RH 28/1 5F |
| International Article Code (EAN) | 04006825622539 |
| Power Source | Corded Electric |
| Voltage | 240 Volts |
| Maximum Power | 950 Watt |
| Maximum Rotational Speed | 4500 rpm |
| Maximum Torque | 27 Newton Meters |
| Impact Energy | 3 Joules |
| Maximum Chuck Size | 28 Millimeters (SDS-plus) |
| Drilling Capacity in Concrete | 28 Millimeters |
| Drilling Capacity in Wood | 30 Millimeters |
| Drilling Capacity in Metal | 28 Millimeters |
| Material | Metal |
| Product Dimensions (L x W x H) | 39.6 x 9 x 22.2 cm |
| Item Weight | 3.8 Kilograms |
| Special Feature | Speed Lock Button |
| Included Components | Rotary Hammer Drill, E-Box, Additional Chuck, Depth Stop |
Warranty and Support
For warranty information and customer support, please refer to the documentation included with your product or visit the official Einhell website. Keep your purchase receipt as proof of purchase for any warranty claims.
For further assistance, you may contact Einhell customer service directly. Contact details can typically be found on the manufacturer's website or in the product packaging.
Online Resources: www.einhell.com