소개
The Bosch GBH 3-28 E is a powerful rotary hammer drill designed for demanding drilling and chiseling tasks. Featuring an SDS-plus tool holder, it delivers maximum power with minimal vibrations, ensuring high drilling progress and 20% more chiseling performance compared to other rotary hammers in its class. This manual provides essential information for safe and efficient operation, setup, maintenance, and troubleshooting.

Image of the Bosch GBH 3-28 E rotary hammer drill, showcasing its robust design and ergonomic handle. This tool is engineered for heavy-duty applications.
주요 특징:
- Maximum power output for demanding tasks.
- SDS-plus tool holder with dust protection.
- Reduced vibrations for comfortable operation.
- High drilling progress and superior chiseling performance.
안전 지침
Always observe the following safety precautions when operating the Bosch GBH 3-28 E rotary hammer drill to prevent electric shock, fire, and serious injury.
일반 전동 공구 안전 경고:
- 작업 영역 안전: 작업 공간을 깨끗하고 밝게 유지하세요. 어수선하거나 어두운 곳은 사고의 위험이 있습니다. 가연성 액체, 가스 또는 먼지가 있는 곳 등 폭발 위험이 있는 환경에서는 전동 공구를 작동하지 마세요.
- 전기 안전: 전동공구 플러그는 콘센트에 맞는 크기여야 합니다. 플러그를 절대로 개조하지 마십시오. 접지형 전동공구에는 어댑터 플러그를 사용하지 마십시오. 파이프, 라디에이터, 가스레인지, 냉장고 등 접지된 표면에 신체가 닿지 않도록 주의하십시오.
- 개인 안전: Always wear eye protection. Use hearing protection when operating for extended periods. Wear a dust mask if operations create dust. Dress properly; do not wear loose clothing or jewelry. Keep hair, clothing, and gloves away from moving parts.
- 도구 사용 및 관리: 전동 공구를 무리하게 사용하지 마십시오. 용도에 맞는 전동 공구를 사용하십시오. 전동 공구를 조정하거나, 액세서리를 교체하거나, 보관하기 전에 전원 플러그를 뽑거나 배터리 팩을 분리하십시오.
- 서비스: 자격을 갖춘 수리 담당자에게 동일한 교체 부품만 사용하여 전동 공구를 서비스받으세요. 이렇게 하면 전동 공구의 안전성이 유지됩니다.
패키지 내용
포장을 풀 때 아래 나열된 모든 품목이 모두 들어 있고 상태가 양호한지 확인하세요.
- Bosch GBH 3-28 E Rotary Hammer Drill
- 보조 핸들
- 깊이 정지
- 운송 케이스
- 사용 설명서 (본 문서)
설정
Before operating the rotary hammer drill, follow these steps for proper setup:
1. 보조 손잡이 부착:
- 보조 손잡이를 시계 반대 방향으로 돌려 느슨하게 합니다.
- Slide the handle over the collar of the tool to the desired position.
- Tighten the handle by turning it clockwise until secure. Ensure it is firmly fixed for safe operation.
2. Inserting the Depth Stop:
- Insert the depth stop into the designated hole on the auxiliary handle.
- 드릴링 깊이에 맞춰 깊이 조절 장치를 조정하십시오.
- Secure the depth stop by tightening the auxiliary handle.
3. Inserting SDS-plus Drill Bits/Chisels:
- Clean the shank of the drill bit or chisel and apply a thin layer of grease.
- Insert the tool into the SDS-plus tool holder with a slight twisting motion until it locks.
- Pull on the tool to check if it is securely locked. A slight axial play is normal and necessary for the hammer mechanism.
작동 지침
Familiarize yourself with the controls and functions before beginning work.
1. 모드 선택 스위치:
The GBH 3-28 E features a mode selector switch to choose between different operating modes:
- Drilling (Rotation only): For drilling in wood, metal, ceramics, and plastics without hammer action.
- Hammer Drilling (Rotation with Hammer Action): 콘크리트, 벽돌, 석재에 구멍을 뚫는 데 사용합니다.
- Chiseling (Hammer Action only): For light chiseling work, such as removing tiles or breaking small sections of concrete.
메모: Always switch modes only when the tool is switched off to prevent damage to the gearbox.
2. 켜기/끄기:
- To switch on, press the On/Off switch.
- To switch off, release the On/Off switch.
- For continuous operation, press the On/Off switch and then press the lock-on button. To switch off, press the On/Off switch again.
3. Speed Preselection:
The rotary hammer drill features a speed preselection wheel. Adjust the speed according to the material and the size of the drill bit/chisel. Lower speeds are generally used for larger diameters and harder materials.
4. Working with the Tool:
- 교련: Apply moderate pressure. Let the tool do the work. Excessive pressure will not speed up drilling but can damage the drill bit and the tool.
- 치즐링: Hold the tool firmly with both hands. Guide the chisel along the desired line.
- 과부하 보호: The tool is equipped with an overload clutch. If the drill bit jams, the drive to the spindle is interrupted. Always hold the tool firmly with both hands to counteract the reaction forces.
유지
Regular maintenance ensures the longevity and optimal performance of your Bosch GBH 3-28 E rotary hammer drill.
1. 청소:
- Always disconnect the plug from the power outlet before any cleaning or maintenance work.
- 과열을 방지하기 위해 통풍구를 깨끗하게 유지하십시오.
- Clean the tool holder regularly. Remove dust and debris.
- 도구 하우징을 부드러운 천으로 닦으세요.amp 옷감. 강한 세척제나 솔벤트를 사용하지 마십시오.
2. 윤활:
The SDS-plus tool holder requires periodic lubrication. Apply a thin layer of special grease to the shank of the drill bits and chisels before insertion to ensure smooth operation and reduce wear.
3. Carbon Brushes:
The carbon brushes are wear parts. If the motor sparks excessively or the tool loses power, the carbon brushes may need replacement. This should be performed by an authorized Bosch service center.
4. 보관:
Store the tool in a dry, secure place, out of reach of children. Use the transport case for protection.
문제 해결
This section addresses common issues you might encounter with your Bosch GBH 3-28 E rotary hammer drill.
| 문제 | 가능한 원인 | 해결책 |
|---|---|---|
| 도구가 시작되지 않습니다. | 전원 공급 불량; 스위치 불량; 카본 브러시 마모. | Check power connection. Ensure switch is fully pressed. Contact service center for brush replacement. |
| 드릴링/끌질 성능이 저하됩니다. | Worn drill bit/chisel; incorrect mode selection; insufficient lubrication of tool holder. | Replace worn accessories. Select correct operating mode. Lubricate tool shank. |
| 과도한 진동이나 소음. | Loose auxiliary handle; damaged accessory; internal fault. | Tighten auxiliary handle. Inspect and replace damaged accessories. Contact service center. |
| 도구가 과열되었습니다. | Blocked ventilation slots; continuous heavy load; worn motor components. | Clean ventilation slots. Allow tool to cool down. Avoid prolonged heavy use. Contact service center. |
명세서
Detailed technical specifications for the Bosch GBH 3-28 E Rotary Hammer Drill:
- 상표: 보쉬
- 모델 번호: GBH 3-28E
- 제조업체 부품 번호: 611239703
- 전원: 코드식 전기
- 권tage: 230 볼트
- 최대 전력: 800 와트
- 무부하 속도: 900 RPM
- 제품 무게: 3.5 킬로그램
- 재료: 금속
- 색상: 검은색
- 특별 기능: Transmission, Long lifespan, Robust design
- 드릴 유형: 로타리 해머 드릴
- 공구 홀더 : SDS 플러스
- 국제 무역 품목 번호(GTIN): 03165140220255
보증 및 지원
Warranty information for the Bosch GBH 3-28 E rotary hammer drill is typically provided with the purchase documentation. Please refer to your sales receipt or the warranty card included in the product packaging for specific terms and conditions.
For technical support, service, or spare parts, please contact Bosch customer service or visit their official website. Ensure you have your model number (GBH 3-28 E) and serial number (if applicable) ready when contacting support.
보쉬 공식 Web대지: www.bosch-professional.com