50 x 2.38mm Pro Steel Axle x2

Precision and durability where it matters most: the rear axle of your slot car

The Scaleauto Pro SC-1210 steel axle is a benchmark component for any builder seeking reliability and accuracy in their setups. With a diameter of 2.38 mm and a length of 50 mm, this axle is made from high-quality steel and comes in a pack of 2 units.

Function and performance

The axle is the mechanical heart of any slot car: it transmits the motor's rotation to the wheels, and any irregularity in it directly affects stability and speed. A Pro steel axle offers:

• Greater resistance to bending under load compared to lower quality axles.
• Precise concentricity that reduces vibrations and improves wheel grip.
• Treated surface that facilitates the fitting of crowns, bearings, and wheels with tight tolerances.

Compatibility and installation

The 2.38 mm diameter is one of the most widely used standards in competitive slot racing, compatible with crowns, bearings, and wheels designed for this measurement. Before installation, it is advisable to check that the parts to be fitted on the axle (bearings, crowns, and wheel hubs) are sized for this exact diameter.

The length of 50 mm allows it to be adapted to different chassis configurations, although it is recommended to verify the measurements of the chassis mount and the wheel spacing of your vehicle before making the final cut or adjustment.

Preparation and usage recommendations

• Clean the axle with a degreaser before installation to ensure proper seating of bearings and crowns.
• Use appropriate tools for pressing components; avoid direct impacts that may cause eccentricity.
• If you are going to machine the axle (cutting, slots for circlips…), do so with precision tools to maintain concentricity.
• Check the axle periodically if you compete frequently, as accumulated wear can affect performance.

Common mistakes

• Not checking the inner diameter measurement of the bearings before installation: an incorrect fit can cause play or damage the bearings.
• Installing the crown without properly aligning it with the pinion: although this is not an error of the axle itself, a misaligned axle exacerbates any meshing issues.
• Reusing a bent axle: if you detect unusual vibration or rattling, replace it; repair never restores the original geometry.

Frequently asked questions

How many units are included in the SC-1210 pack?

The pack includes 2 Pro steel axles of 2.38 mm x 50 mm.

Is it compatible with chassis from other brands besides Scaleauto?

The 2.38 mm diameter is a common standard in competitive slot racing, so it may be compatible with mounts and components from various brands that work with this measurement. Always check the specifications of your chassis before installation.

Can I cut the axle to a shorter length?

Yes, the steel of these axles can be cut with appropriate tools. Use a precision cutter or a lathe to maintain a perpendicular cut and avoid burrs that may affect the centering of wheels and bearings.

What is the difference between a Pro axle and a standard axle?

Scaleauto Pro axles are made from higher quality steel and tighter tolerances, resulting in better concentricity, less vibration, and greater durability in intensive or competitive use.

What type of bearings is it compatible with?

With bearings designed for an axle with a 2.38 mm inner diameter. It is the most common standard in competitive slot racing; still, always verify the inner measurement of the bearing you use in your setup.

The Scaleauto SC-1210 Pro steel axle (2.38 mm x 50 mm, pack of 2) is a precision slot car component designed for competitive and club racing. Its high-quality steel construction ensures minimal flex, accurate concentricity and long-lasting durability. Compatible with 2.38 mm standard bearings, crowns and wheel hubs, it is a reliable upgrade for any serious slot car builder looking to optimise drivetrain performance.