Repair internal thread - All you need to know

Threads are essential for maintaining the structural integrity of many mechanical components. Given the critical role they play, it's not uncommon for them to become damaged. Fortunately, replacing an entire component isn't always necessary—internal thread repairs can be quick and efficient with the right tools. In this blog post, we introduce two professional solutions: BaerCoil® and BaerFix®, both designed to restore damaged internal threads effectively. When it comes to DIY thread repair, precision is key. Using improper tools or materials can lead to further damage or a weak connection. That’s why we recommend using specialized products like BaerCoil® and BaerFix®. These systems make the process simple, fast, and cost-effective, even for those without much experience in mechanical repairs. BaerCoil® wire thread inserts are made from cold-formed wire with a diamond-shaped cross-section. This design provides maximum strength while taking up minimal space, making them ideal for repairing internal threads without compromising the structure of the component. There are three main types of BaerCoil® inserts: free-running, screw grip (screw-locking), and NoTang (without tang). Each has its own advantages depending on the application. The free-running type is available in various materials such as stainless steel V2A, V4A, Inconel X750, and bronze. The screw grip version includes polygon-shaped turns that provide extra clamping force, making it ideal for high-vibration environments. The NoTang version eliminates the need for a tang, simplifying the installation process. To install BaerCoil® inserts, you'll need a few basic tools: a twist drill bit, STI tap, countersink tool, installation tool, and a tang breaker. All these tools are available in convenient sets, so you don’t have to buy them individually. Here’s how to install BaerCoil®: 1. Drill out the damaged thread or pre-drill the core hole. 2. Cut the receiving thread into the drilled hole. 3. Place the insert on the installation tool and screw it into the thread. 4. Remove the installation tool, leaving the insert in place. 5. Break the tang using a tang breaker. For self-tapping internal thread repairs, BaerFix® offers a great alternative. These inserts feature a self-tapping mechanism that cuts its own thread when inserted, eliminating the need for pre-cutting. They come in different versions, including those with cutting slots or holes, suitable for various materials. BaerFix® inserts are particularly useful for soft or low-shear-strength materials, where traditional methods might fail. They create strong, durable connections and are easy to install by hand or with a machine. However, they aren't suitable for very hard materials above 400 N/mm² and require more space due to their thick walls. In summary, BaerCoil® is the flexible and versatile option for most internal thread repairs, while BaerFix® excels in softer materials. Both systems are user-friendly and perfect for home use. Whether you're dealing with a worn-out bolt hole or a damaged nut, BaerCoil® and BaerFix® offer reliable solutions. You can find both products in the BAER online shop, ready to help you fix your threaded components quickly and effectively.

Thiourea Accelerator

Thiourea accelerators have low promotion efficiency and poor scorch resistance, and diene rubbers have been rarely used. However, in some special cases, for example, when sulfur donors such as thiuram disulfide or polysulfide are used as vulcanizing agents, it has the function of active agent; thiourea accelerators are almost special accelerators for chloroprene rubber. The vulcanizate with good properties such as tensile strength, constant elongation stress and compression set can be obtained.

Curekind Thiourea accelerator series, including Curekind ETU, Curekind DETU, and ECO-friendly accelerator Curekind MTT, which can be replaced of ETU, used as vulcanization accelerator for CR compound.

Thiourea Accelerator, Ultra Accelerator DETU, Thiourea Accelerator MTT to replace of ETU

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