Mini Brass Universal Joint Coupling 2mm/1.5mm for Scale Models

$76.31 $102.61

Color A-2mm B-2mm-homotaxial C-2mm D-1.5mm

Mini Universal Joint Brass Coupling Shaft Connector for Scale Models

Upgrade your static scale model to a dynamic, working masterpiece with this precision-machined mini universal joint brass coupling connector. Designed for modelers working in 1:35, 1:64, 1:72, 1:87, and other fine-scale proportions, this tiny yet robust coupling transfers rotational motion smoothly — ideal for converting static driveline components into fully functional, moving parts.

Key Specifications

Material: Brass (Aluminium-Copper Alloy)
Outer Diameter Options: Approx. 2mm and 1.5mm
Shaft Hole: 1mm tight fit (-0.05mm tolerance)
Compatible Scales: 1:35, 1:64, 1:72, 1:87, and similar proportional scale models
Type: Universal Joint / Through-Hole Shaft Coupling

Why Choose This Coupling?

✅ Precision engineering – tight 1mm shaft fit ensures minimal play and accurate torque transmission
✅ Two size options – OD 2mm and OD 1.5mm to suit different model scales and driveshaft diameters
✅ Quality brass construction – durable, corrosion-resistant, and lightweight for miniature applications
✅ Static-to-dynamic conversion – the perfect part for bringing model vehicles and mechanical displays to life
✅ Universal joint design – allows angular misalignment between connected shafts, just like full-size automotive drivelines

Who Is This For?

This micro coupling is a must-have for serious scale modelers, RC model builders, diorama creators, and hobbyists who demand authenticity and precision in their builds. Whether you're animating a 1:72 tank drivetrain, a 1:64 die-cast car conversion, or a 1:87 locomotive chassis, this universal joint delivers the fine mechanical connection you need.

Made in Mainland China.

Frequently Asked Questions

Q: What scale models are compatible with this mini universal joint coupling?

A: This brass coupling is designed for 1:35, 1:64, 1:72, and 1:87 scale models, as well as other similar fine-scale proportions. The two outer diameter options (2mm and 1.5mm) give you flexibility across different model sizes and driveshaft configurations.

Q: What size shaft hole does this coupling use?

A: The shaft hole is 1mm with a tight fit tolerance of -0.05mm, ensuring a secure, low-play connection that accurately transmits rotational motion between shafts in your scale model build.

Q: What is the difference between the 2mm and 1.5mm versions?

A: The difference refers to the outer diameter (OD) of the universal joint body. The 1.5mm OD is suited to finer, smaller-scale applications (e.g. 1:87 or 1:72), while the 2mm OD is better for slightly larger scales such as 1:64 or 1:35. Please refer to the product images for exact dimensional drawings before selecting your size.

Q: Can this coupling be used to convert a static model to a dynamic (moving) one?

A: Yes — that is exactly what this coupling is designed for. It acts as the mechanical link in a driveline, transmitting rotation between two shafts at an angle, allowing modelers to animate previously static vehicles or machinery into dynamic, working displays.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.