1. Introduction
This manual provides essential information for the safe and effective operation, maintenance, and care of your BOSCH 11264EVS 1-5/8 Inch SDS-Max Combination Hammer. Please read these instructions thoroughly before using the tool to ensure proper function and to prevent injury or damage.
The BOSCH 11264EVS is a powerful 13 Amp combination hammer designed for heavy-duty drilling and chiseling tasks in concrete and masonry. It features a robust motor, SDS-Max chuck system, and advanced vibration control for enhanced user comfort and productivity.
2. Safety Information
Always observe general power tool safety guidelines. Failure to follow these instructions may result in electric shock, fire, and/or serious injury.
- Personal Protective Equipment: Always wear eye protection, hearing protection, and appropriate gloves when operating the tool. A dust mask is recommended for dusty applications.
- Work Area: Keep your work area clean and well-lit. Cluttered or dark areas invite accidents.
- Electrical Safety: Ensure the power supply matches the tool's requirements (120 Volts, 13 Amps). Use an extension cord rated for the tool's amperage and suitable for outdoor use if applicable. Do not abuse the cord.
- Secure Workpiece: Always secure the workpiece to prevent movement during operation.
- Proper Grip: Maintain a firm grip on the tool with both hands, especially during heavy-duty applications.
- Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
3. Components Overview
Familiarize yourself with the main parts of your BOSCH 11264EVS combination hammer:
- SDS-Max Chuck: For quick and secure bit changes.
- Auxiliary Handle: Provides additional grip and control.
- Mode Selector: Switches between rotary hammer, hammer-only, and Vario-Lock modes.
- Variable Speed Dial: Adjusts the maximum speed/impact rate.
- Trigger Switch: Activates the tool.
- Service Indicator Light: Illuminates when maintenance is required.
- Vibration Control System: Reduces vibration for user comfort.
Image 3.1: Overview of the BOSCH 11264EVS Combination Hammer with key features labeled, including the SDS-Max chuck, Vario-Lock positioning, Vibration Control, Turbo Power, and Constant Response Circuitry.
4. Setup
4.1 Attaching the Auxiliary Handle
The auxiliary handle can be rotated 360 degrees for optimal positioning. Loosen the handle by twisting its grip counter-clockwise, position it as desired, and then tighten by twisting clockwise until secure.
4.2 Inserting and Removing SDS-Max Bits
- Clean the shank of the SDS-Max bit and apply a thin layer of grease to ensure smooth operation and prevent wear.
- Pull back the chuck ring with one hand and hold it in the 'cocked' position.
- Insert the SDS-Max bit into the chuck until it clicks into place. Release the chuck ring. The bit should have a slight axial play, which is normal for SDS-Max systems.
- To remove, pull back the chuck ring and the bit will release.
4.3 Power Connection
Connect the tool to a 120V power outlet. Ensure the circuit can handle the tool's 13 Amp draw. If using an extension cord, it must be rated for at least 15 Amps and be in good condition.
5. Operating Instructions
5.1 Mode Selection
The mode selector allows you to choose the appropriate function for your task:
- Rotary Hammer Mode: For drilling into concrete, masonry, and stone with rotation and hammering action.
- Hammer-Only Mode: For chiseling, chipping, and demolition work without rotation. This mode delivers 20% more power.
- Vario-Lock Positioning: This intermediate position allows you to rotate the chisel to the desired working angle (12 detent positions) before locking it in Hammer-Only mode.
5.2 Speed Control
The tool features a variable speed trigger and a speed dial:
- Variable Speed Trigger: In rotary hammer mode, the speed and impact rate are controlled by the amount of trigger depression.
- Speed Dial: Sets the maximum speed and impact rate for both modes. Adjust this dial to match the material and application.
5.3 Starting and Stopping
To start the tool, press the trigger switch. To stop, release the trigger. In hammer-only mode, there is a trigger lock feature; press the top trigger to start and the bottom trigger to stop.
Image 5.1: A worker demonstrating the BOSCH 11264EVS Combination Hammer in use for drilling into a concrete wall, highlighting its application in rotary hammer mode.
Image 5.2: A worker utilizing the BOSCH 11264EVS Combination Hammer for chiseling concrete on a floor, showcasing its use in hammer-only mode for demolition tasks.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your tool.
- Cleaning: After each use, clean the tool's exterior with a soft cloth. Keep ventilation openings clear of dust and debris.
- Chuck Maintenance: Regularly clean the SDS-Max chuck and apply a small amount of grease to the bit shank to reduce friction and wear.
- Service Indicator: The service indicator light will illuminate when the carbon brushes need replacement or other internal service is due. When this light appears, contact an authorized service center.
- Cord Inspection: Periodically inspect the power cord for damage. Do not use the tool with a damaged cord.
7. Troubleshooting
Refer to this section for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | No power supply; Damaged cord; Faulty switch | Check power connection; Inspect cord; Contact service center |
| Reduced hammering/drilling performance | Worn bit; Insufficient lubrication in chuck; Service required | Replace bit; Lubricate chuck; Check service indicator light |
| Tool overheats (especially metal housing) | Prolonged heavy use; Blocked ventilation | Allow tool to cool; Clear ventilation slots; Reduce load |
| Bit not locking in chuck | Chuck mechanism dirty or damaged; Incorrect bit type | Clean chuck and bit shank; Ensure SDS-Max bit is used; Contact service center |
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Bosch |
| Model Number | 11264EVS |
| Power Source | Corded Electric |
| Voltage | 120 Volts |
| Amperage | 13 Amps |
| Maximum Rotational Speed | 340 RPM |
| Blows per Minute | 1700 to 2900 BPM |
| Impact Energy | 6.8 ft-lbs (Normal) / 8.1 ft-lbs (Turbo) |
| Solid Bit Capacity | 1-5/8 Inches |
| Chuck Type | SDS-Max |
| Tool Length | 19.25 Inches |
| Item Weight | 15.2 Pounds |
| Special Features | Vibration Control, Constant Response Circuitry, 1-Hand Tool Change |
| Included Components | Side Handle, Carrying Case |
Image 8.1: The BOSCH 11264EVS Combination Hammer stored within its durable blue carrying case, designed for protection and transport.
9. Warranty
The BOSCH 11264EVS Combination Hammer comes with a 1-Year Limited Warranty and a 30-Day Money Back Guarantee. For specific terms and conditions, please refer to the warranty card included with your product or visit the official Bosch website.
10. Support
For technical assistance, service, or to order replacement parts, please contact Bosch Customer Service. You can find contact information on the official Bosch website or in the documentation provided with your tool.
Online Resources: Visit the official Bosch website for product registration, FAQs, and additional support materials.
11. Official Product Videos
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