🔧 Mini Coupling Brass Universal Joint 3mm-3mm Diameter 7mm Length 13mm M2/M2.5 Threaded Hole Model Ship Coupler Gimbal
This high-precision Mini Brass Universal Joint features 3mm to 3mm bore size, fitting 3mm diameter shafts on both ends. With 7mm outer diameter and 13mm total length, it is compact and exquisite in size. Made of premium brass material with fine craftsmanship, it can rotate up to approximately 200 degrees. Perfect for tiny transmission systems of mini model airplanes, antique sailboats, science popularization models and other micro DIY projects.
⭐ Main Features & Advantages of Mini Brass Universal Joint
- 🎯 Micro Compact Design: Only 7mm outer diameter, ideal for micro models with extremely limited installation space.
- ⛓️ Premium Brass Material: Excellent corrosion resistance, high structural strength and ultra-smooth rotation.
- 💪 Large Rotation Angle: Supports about 200 degrees transmission angle for flexible layout and installation.
- 📏 Standard 3mm Aperture: Perfectly matches micro motor shafts and miniature drive shafts.
- 🛠️ Exquisite Workmanship: Smooth surface finish, no jamming or stuck during rotation.
- 🌧️ Durable & Rustproof: Brass material ensures long service life without rust and oxidation.
- 🔧 Wide Compatibility: Suitable for various micro model transmission and steering mechanism DIY projects.
📊 Technical Specifications of Brass Universal Joint Coupling
| Product Name | Mini Brass Universal Joint / Model Gimbal Coupler |
|---|---|
| Main Material | High Quality Brass |
| Bore Specification | 3mm - 3mm (Both ends 3mm aperture) |
| Outer Diameter | 7mm |
| Total Length | 13mm |
| Rotation Angle | Approx 200 Degrees |
| Thread Hole | M2 / M2.5 Threaded Mounting Hole |
| Product Type | Micro Universal Joint / Gimbal Coupling |
| Characteristic | Smooth rotation, corrosion resistant, no jamming, compact precision size |
| Application Scene | Model airplane, sailboat, science teaching aid, micro robot, train & car model, DIY machinery |
| Installation Feature | Standard size, easy to install and fix with set screws |
| Important Note | Please confirm shaft diameter and installation space before purchase for perfect fit |
❓ FAQ About Micro Brass Universal Joint
🔍 What is the size of this universal joint?
This brass universal joint is 3mm-3mm bore, 7mm outer diameter and 13mm total length, compact and precise for tiny model applications.
🌧️ Is brass material durable for long-term use?
Yes. Adopting premium brass material, it owns great corrosion resistance, rustproof performance and high strength, keeping smooth rotation without wear for long time.
📏 What is the maximum rotation angle?
The micro gimbal can reach about 200 degrees rotation angle, allowing flexible arrangement of transmission structure for your models.
🔧 What models can this coupling fit?
Widely used for micro model airplane power transmission, antique sailboat steering and paddle drive, science teaching aids, micro robot joint transmission, train & car model steering system.
💡 Is it easy to install for DIY projects?
Very easy to install. Equipped with M2/M2.5 threaded hole for fixed locking, perfectly connecting motor shaft and drive shaft without complex modification.
🛡️ Will it get stuck during rotation?
Precision manufacturing with smooth internal structure ensures flexible rotation, no jamming, stable and quiet transmission performance.
💎 Why Choose Our 3mm-3mm Brass Universal Joint?
Our Mini Brass Universal Joint Gimbal adopts high-grade brass integrated processing, featuring compact 7mm outer diameter, standard 3mm double aperture and 200° large rotation angle. With precise workmanship, smooth rotation, corrosion resistance and durable performance, it is the ideal transmission connector for micro model aircraft, simulated ship models, science popularization teaching aids, miniature robots and various DIY small mechanical structures. M2/M2.5 threaded hole design makes installation and fixing more convenient, perfect for your micro model modification and DIY production.
On 13/05/2026 at 13:04:15 AEST, seller added the following information: