2.375 x 51mm (3/32)

Sideways AX51 Axles: Ground and Hardened Steel for Competition Mounts

The axle is one of the most critical components of any prepared slot car: its straightness, hardness, and surface finish depend on clean transmission, cornering stability, and the lifespan of crowns and bearings. The Sideways AX51 axles are made from ground and hardened steel, ensuring very tight tolerances and a high-hardness surface that minimises wear and ensures perfectly centred rotation.

Technical Features

• Diameter: 2.375 mm (3/32")
• Length: 51 mm
• Material: ground and hardened steel
• Pack Contents: 2 units
• Reference: SWAX51 / AX51

Function and Performance

The grinding of the steel ensures that the diameter is uniform along the entire length of the axle, which is essential to avoid vibrations at high rpm and to ensure that the crown is perfectly aligned with the pinion. The hardening provides the necessary hardness to withstand the tightening of the crown's fixing screws without marking or deforming the axle, prolonging the life of the assembly.

The measurement of 3/32" (2.375 mm) is a widely used standard in prepared slot cars, compatible with a wide variety of bearings, crowns, and axle supports of this diameter available on the market.

Assembly and Preparation

Before mounting the axle, it is advisable to check that the bearings and the bracket are clean and perfectly aligned. A ground axle only shows its full potential when the transmission assembly is well prepared: any deviation in the supports or dirt in the bearings will negate the advantages of grinding. It is recommended to check the alignment of the axle with respect to the guide and the wheelbase before permanently fixing the crown.

Compatibility

These axles are compatible with all transmission sets designed for the standard diameter of 3/32" (2.375 mm). To confirm compatibility with a specific chassis or bracket, always consult the manufacturer's specifications.

Frequently Asked Questions

What advantage does a ground axle have over a standard one?

Grinding ensures a constant diameter along the entire length and a very smooth surface, which reduces vibrations, improves the seating of the bearings, and prolongs the life of the crown.

Why does it come in a pack of 2 units?

The pack of 2 units allows for an immediate replacement during preparation or competition sessions, without having to interrupt work due to a damaged axle.

Can I use this axle with crowns and pinions from other manufacturers?

Yes, as long as the inner diameter of the crown or pinion is compatible with 2.375 mm (3/32"). Check the specifications of each component before assembly.

Is any additional treatment necessary before installing the axle?

No prior treatment is necessary. It is advisable to clean the axle with a dry cloth or isopropyl alcohol to remove any factory grease residue before assembly.

Can the hardening of the steel cause brittleness?

The hardening is calibrated to provide surface hardness without compromising the toughness of the axle under normal competitive slot racing conditions. It is not a component that will work under significant bending, so brittleness is not an issue in this type of application.

Sideways AX51 hardened and ground steel axle, 2.375 x 51 mm (3/32"), pack of 2 units. Precision-ground axle for slot car racing preparation, compatible with standard 3/32" bearings, crowns and axle holders. Ideal for competitive slot car builders seeking reliable, long-lasting drivetrain components.