8mm pulley for 2.38mm axle

3D Printed Pulley for 2.38mm Shaft Transmissions

This 8mm diameter pulley, manufactured by 3dsrp using FDM (Fused Deposition Modeling) 3D printing technology, is designed to work with 2.38mm shafts. Its press-fit mounting system facilitates assembly without the need for adhesives or special tools.

Main Features

• Pulley Diameter: 8mm
• Compatible Shaft Diameter: 2.38mm
• Manufacturing: FDM 3D printing
• Mounting: Press-fit
• Reference: SRP018124

Function and Performance

Pulleys are key components in belt transmission systems. An 8mm diameter with a fit for a 2.38mm shaft corresponds to a common configuration in scratch building projects, slot modifications, or small kinetic modelling mechanisms. FDM manufacturing allows for precise geometries with a reduced weight, which is particularly useful when every tenth of a gram matters.

Assembly and Preparation

The press-fit mounting system means that the pulley fits directly onto the shaft without the need for adhesive. Before assembly, it is advisable to ensure that the shaft is clean and free of burrs to guarantee a firm and centred fit. If the fit is slightly loose due to printing tolerances, a drop of fine cyanoacrylate ensures permanent fixation.

Frequently Asked Questions

What type of shaft is this pulley compatible with?

It is specifically designed for 2.38mm diameter shafts, a widely used measurement in slot and small-scale modelling projects.

Do I need special tools to mount it?

No. The press-fit mounting system allows for direct installation onto the shaft. To facilitate assembly, you can use a small block or hand press if the tolerance is very tight.

Does FDM printing affect the precision of the pulley?

The FDM technology offers more than sufficient precision for this type of application. The dimensional tolerances are suitable for low-load transmissions such as those commonly found in slot or modelling mechanisms.

Can I use it with any 8mm belt?

The outer diameter of 8mm determines the transmission ratio, but compatibility with the belt also depends on the profile of the pulley groove. Check that the type of belt you are using fits the geometry of the product before combining them.

The SRP018124 is an 8mm FDM 3D-printed pulley designed for 2.38mm axles, press-fit mounting, ideal for slot car scratch building, RC and scale modeling transmission systems. Lightweight and precise, manufactured by 3dsrp.