Universal bearing metal chassis

A brass bearing designed for those who build or prepare their own chassis

The SP051900 from Sloting Plus is a universal bearing specifically conceived for metal chassis, 3D-printed chassis, and fibre chassis. Its mounting diameter of 4.75 mm —the standard for this type of mounting— facilitates installation without the need for additional machining, making it a straightforward component for chassis preparers and builders.

Technical specifications

• Material: brass
• Compatible axle: Ø 2.38 mm (3/32'')
• Mounting diameter: Ø 4.75 mm (standard)
• Weight: 0.33 g per unit
• Contents: bag with 2 units

Function and performance

The bearing acts as a support point for the rear axle within the chassis, reducing friction and allowing the axle to rotate with minimal resistance. Brass is a common material for this type of component due to its balance between hardness, low friction, and ease of machining if fine adjustments are needed.

The weight of just 0.33 g per unit is a relevant factor for those working with custom chassis and meticulously controlling the total weight of the assembly down to the milligram.

Compatibility and installation

The 4.75 mm mounting diameter is the widely used standard in metal and custom-built chassis within competitive slot racing. This makes it compatible with most common designs in this format, both in inline and anglewinder configurations.

Installation is straightforward: the bearing is pressed into the chassis housing. In some assemblies, a slight adjustment with a tool may be necessary to ensure perpendicularity and proper axle alignment.

Common mistakes

• Installing the bearing without checking that the housing is exactly 4.75 mm can lead to play or fitting difficulties. It is advisable to verify the drill size before mounting.
• Not cleaning the housing before installation can leave shavings or debris that affect the concentricity of the axle.
• Excessively forcing the insertion can slightly deform the bearing and compromise the axle's freedom of rotation.

Ideal for…

Preparers and slot racing enthusiasts who build or modify their own chassis, whether in metal, carbon fibre, or 3D printing, and need a reliable, lightweight component with standard dimensions for the rear axle.

Frequently asked questions

Is this bearing suitable for standard plastic chassis?

It is designed for metal, 3D, or fibre chassis. In conventional plastic chassis, the mounting may not be appropriate, depending on the housing design.

Is the 3/32'' axle the same as Ø 2.38 mm?

Yes. 3/32'' is approximately equivalent to 2.38 mm. It is the most common rear axle diameter in competitive slot racing.

How many bearings are included in the bag?

The bag contains 2 units, sufficient to equip a complete rear axle.

Is it necessary to lubricate the bearing before use?

A small amount of specific slot oil at the contact point between the axle and the bearing improves performance and extends the lifespan of the component.

Can I use it with inline or anglewinder configuration?

Yes. The bearing is compatible with both configurations, provided the chassis has the standard 4.75 mm housing.

The Sloting Plus SP051900 is a universal brass bearing designed for metal, 3D-printed and fibre chassis in slot car racing. With a 4.75 mm standard mounting diameter and compatibility with 3/32'' (2.38 mm) axles, it is a reliable, lightweight solution for custom chassis builders and slot car racing enthusiasts looking for precise, low-friction axle support.