1.製品オーバーview
The Bosch 85208M is a high-quality solid carbide straight router bit designed for precision routing applications. This 1/16-inch diameter, single-flute bit features a 1/4-inch shank, making it suitable for creating straight grooves, dados, and mortises in various wood materials. Bosch router bits are known for their durable construction, precise cutting geometry, and long operational life, ensuring consistent performance and clean cuts.

図1.1: The Bosch 85208M solid carbide router bit shown in operation, precisely cutting a straight groove into a wooden workpiece. This illustrates the bit's primary function for creating accurate channels.
主な特徴:
- Solid Carbide Construction: Ensures exceptional durability and extended tool life, especially when working with tough materials.
- Precision Cutting Geometry: Engineered for exactly calculated cutting, resulting in clean, accurate, and low-vibration routing.
- Single Flute Design: Optimized for efficient chip evacuation and smooth cutting, particularly in smaller diameter applications.
- Standardized Working Lengths: Designed to match the normal thickness of standard solid wood and wood materials for versatile use.
2. 安全情報
Always prioritize safety when operating power tools and using router bits. Failure to follow these safety guidelines may result in serious injury.
- ルーターのマニュアルを読む: Always read and understand the instruction manual for your router before installing or using any router bit.
- 個人用保護具(PPE): Wear appropriate PPE, including safety glasses, hearing protection, and a dust mask. Avoid loose clothing, jewelry, and long hair that could get caught in moving parts.
- 検査ビット: Before each use, inspect the router bit for any signs of damage, dullness, or cracks. Do not use damaged bits.
- 安全なワークピース: ワークピースがしっかりと固定されていることを確認しますclamped or held to prevent movement during routing.
- 適切な取り付け: Install the bit correctly and ensure it is tightened securely in the router's collet. Refer to the "Setup" section for detailed instructions.
- 制御を維持する: Always maintain a firm grip on the router and guide it smoothly. Avoid forcing the bit through the material.
- ルーターのプラグを抜く: Always unplug the router from the power source before changing bits, making adjustments, or performing maintenance.
- 換気: Work in a well-ventilated area to minimize inhalation of wood dust.
3. セットアップとインストール
Correct installation of the router bit is crucial for safe operation and optimal performance.
- 電源がオフになっていることを確認します。 Disconnect the router from its power source to prevent accidental startup.
- コレットとシャンクの清掃: Ensure both the router's collet and the bit's shank are clean and free of debris. Any foreign material can prevent proper seating and lead to runout or bit slippage.
- 挿入ビット: Insert the shank of the Bosch 85208M router bit into the collet. For optimal grip and to prevent the bit from bottoming out, insert the shank at least three-quarters of its length, but avoid inserting it so deep that the cutting flutes touch the collet. A common practice is to insert it fully, then pull it out about 1/16 to 1/8 inch.
- コレットナットを締めます: Using the wrenches provided with your router, securely tighten the collet nut. Do not overtighten, as this can damage the collet or the bit shank. Ensure the bit is firmly held and cannot be pulled out by hand.
- Verify Bit Seating: Double-check that the bit is seated correctly and securely before reconnecting power and operating the router.
4. 操作手順
Follow these guidelines for effective and safe operation of the Bosch 85208M router bit.
- 材料の適合性: This straight bit is suitable for routing grooves and dados in various wood types, including hardwoods, softwoods, plywood, and composite materials.
- ルーター速度: Refer to your router's manual for recommended speed settings for a 1/16-inch diameter bit. Generally, smaller diameter bits require higher RPMs. Adjust speed to prevent burning or excessive vibration.
- 切削深さ: For optimal results and to prevent overloading the bit, make multiple shallow passes rather than one deep pass, especially in harder materials. This also helps in achieving a cleaner finish and extends bit life.
- 送り速度: Maintain a consistent and moderate feed rate. Feeding too slowly can cause burning, while feeding too quickly can lead to tear-out, poor cut quality, and excessive strain on the bit and router.
- カットの方向: Always feed the router against the rotation of the bit (climb cutting is generally not recommended for handheld routing due to increased risk of kickback).
- ワークピースサポート: Ensure the workpiece is fully supported throughout the routing process to prevent tipping or movement.
5. メンテナンス
適切なメンテナンスを行うと、ルータービットの寿命が延び、一貫したパフォーマンスが保証されます。
- クリーニング: After each use, clean the bit to remove resin, pitch, and wood dust buildup. Use a specialized bit cleaner or a mild solvent and a brass brush. Avoid using wire brushes, which can damage the carbide.
- 検査: Regularly inspect the cutting edges for dullness, nicks, or chips. A dull bit will cause burning, tear-out, and increased strain on your router.
- ストレージ: Store router bits in a protective case or rack to prevent damage to the cutting edges. Keep them in a dry environment to prevent corrosion.
- シャープニング: Carbide bits can be professionally sharpened. Do not attempt to sharpen them yourself unless you have specialized equipment and training.
6。 トラブルシューティング
Common issues encountered when using router bits and their potential solutions.
- Burning on Workpiece:
- 原因: Dull bit, too slow feed rate, too deep cut, excessive router speed.
- 解決: Replace or sharpen bit, increase feed rate, reduce depth of cut, adjust router speed.
- Rough Cut / Tear-out:
- 原因: Dull bit, too fast feed rate, incorrect router speed, grain direction issues.
- 解決: Replace or sharpen bit, decrease feed rate, adjust router speed, ensure proper grain direction.
- Excessive Vibration / Poor Bit Seating:
- 原因: Bit not fully seated, dirty collet/shank, damaged collet, bent bit shank.
- 解決: Re-seat bit, clean collet/shank, inspect and replace collet if damaged, replace bent bit.
- ビット破損:
- 原因: Overtightening collet, forcing the bit, hitting foreign objects, excessive side pressure.
- 解決: Ensure proper collet tightening, use appropriate feed rate, inspect workpiece for foreign objects, avoid excessive side pressure.
7. 仕様
Detailed specifications for the Bosch 85208M Solid Carbide Router Bit.

図7.1: Dimensional diagram of the Bosch 85208M router bit, illustrating its 1/4-inch shank diameter, 1/16-inch cutting diameter, and overall length. This provides critical measurements for compatibility and application.
| 仕様 | 詳細 |
|---|---|
| モデル番号 | 85208メートル |
| ブランド | ボッシュ |
| 材料 | Solid Carbide |
| カットタイプ | ストレートカット |
| 切断直径 | 1/16インチ |
| シャンク径 | 1/4インチ |
| フルートの数 | 1 (Single Flute) |
| アイテム重量 | 20グラム |
| 欧州連合 | 000346361483 |
8. 保証とサポート
No specific warranty information is provided for the Bosch 85208M router bit in the product details. For detailed warranty terms, product support, or technical assistance, please refer to the official Bosch Power Tools webサイトをご覧いただくか、Bosch カスタマー サービスに直接お問い合わせください。
You can typically find contact information and support resources on the official Bosch webサイト: www.boschtools.com





