Bosch PSB 680 RE - User Manual

The Bosch PSB 680 RE is an impact drill designed for a variety of drilling tasks in different materials, including brick, concrete, stone, wood, metal, and plastic. Its electronic control and reversible rotation also make it suitable for screwdriving and thread-cutting applications.

Function Description

The core function of the PSB 680 RE is to provide powerful drilling and impact drilling capabilities. The machine is equipped with a robust motor that delivers a high no-load speed and impact rate, allowing for efficient material removal. For impact drilling, the tool generates rapid percussive blows in addition to rotation, which is ideal for hard materials like concrete and stone. When working with softer materials such as wood, metal, or plastic, the impact function can be switched off, and the tool operates as a standard rotary drill. The electronic control system allows for variable speed adjustment, giving the user precise control over the drilling process, which is crucial for different materials and applications. Furthermore, the reversible rotational direction enables the tool to be used for screwdriving and unscrewing, expanding its versatility. A spindle lock button facilitates quick and easy tool changes, enhancing user convenience.

Usage Features

The PSB 680 RE is designed with several features to enhance user experience and operational safety. The auxiliary handle (9) provides an insulated gripping surface and can be adjusted to any position, ensuring a secure and low-fatigue working posture. This is particularly important when dealing with high reaction torque, which can occur during drilling or screwdriving. The depth stop (1) allows for precise control over drilling depth, preventing over-drilling and ensuring consistent results. The keyless chuck (2) enables quick and effortless changing of drill bits and screwdriver bits without the need for additional tools. To operate the keyless chuck, the spindle lock button (11) must be pressed when the machine is at a standstill, locking the drill spindle. The chuck is then tightened or loosened by hand.

The machine features a "Drilling/Impact Drilling" selector switch (4) to easily switch between drilling and impact drilling modes. For screwdriving, the selector switch should be set to the "Drilling" symbol. The rotational direction switch (5) allows users to reverse the direction of rotation, which is essential for screwdriving and for freeing jammed drill bits. This switch cannot be actuated when the On/Off switch (8) is pressed. The On/Off switch (8) itself provides variable speed control; light pressure results in a low speed/impact rate, while increased pressure increases the speed/impact rate. For continuous operation, a lock-on button (6) is available to keep the On/Off switch pressed without constant manual input. A thumbwheel for speed preselection (7) allows users to set the desired speed/impact rate even during operation, which is useful for adapting to different materials and working conditions. When working with screwdriver bits, a universal bit holder (12) should always be used, and only bits that fit the screw head should be selected.

Maintenance Features

Maintaining the PSB 680 RE is straightforward, focusing on ensuring its longevity and safe operation. Before performing any maintenance or making adjustments to the machine, it is crucial to disconnect it from the power source by pulling the mains plug. This prevents accidental starting and potential injury. Keeping the machine and its ventilation slots clean is essential for safe and proper working. Dust and debris can accumulate in the ventilation slots, potentially leading to overheating and reduced performance. Regular cleaning helps to maintain optimal airflow and prevent such issues.

If the supply cord becomes damaged or requires replacement, it must be done by Bosch or an authorized Bosch service agent to avoid safety hazards. This ensures that the replacement cord meets the necessary safety standards and is correctly installed. For any other repairs or replacement of parts, it is recommended to use only identical replacement parts and have the service performed by a qualified repair person. This guarantees that the safety and functionality of the power tool are maintained.

When changing the drill chuck, specific steps must be followed. The keyless chuck is secured by a securing screw (14), which has a left-hand thread and must be unscrewed clockwise to remove. If the screw is tight, a screwdriver can be used with a light blow to the handle to loosen it. To remove the chuck itself, a hex key (15) is clamped into the chuck, and with the spindle lock button (11) pressed, the hex key is turned to loosen the chuck. Mounting the drill chuck involves reversing these steps, ensuring the chuck is tightened with a specific torque (25–35 Nm). A new securing screw should always be used during reassembly, as the thread-locking compound on the original screw loses its effect after multiple usages. After prolonged periods of low-speed operation, it is advisable to run the machine at maximum speed without load for approximately three minutes to cool down the motor.

Bosch PSB 680 RE Specifications

General

Power	680 W
Voltage	230 V
No-load speed	0 - 3000 rpm
Impact rate	0 - 48000 bpm
Chuck capacity	1.5 - 13 mm
Max. drilling diameter in concrete	13 mm
Max. drilling diameter in steel	10 mm
Max. drilling diameter in wood	30 mm
Chuck type	Keyless chuck
Frequency	50 Hz