55mm x Hollow axle with titanium treatment 2.38

Hollow axle with titanium coating: precision and durability in every tenth

This hollow axle from Sloting Plus (ref. SP042155) addresses a very specific need in slot car preparation: reducing rotating weight without sacrificing an ounce of rigidity or lifespan. The combination of calibrated stainless steel with an approximately 8 µm (8 microns) titanium coating makes it a reference piece for those who fine-tune their setup to the last detail.

Features and function

• Base material: calibrated stainless steel, ensuring tight tolerances and smooth rotation without unwanted play.
• Titanium coating: approx. 8 µm layer that increases surface wear resistance and traction, prolonging the axle's life even in intensive use sessions.
• Hollow construction: reduces axle mass, decreasing inertia in the rear end and providing a more agile response to acceleration changes.
• Length: 55 mm.
• Diameter: 2.38 mm (3/32'').
• Weight: 1.20 g.
• Contents: bag with 1 unit.

Performance and preparation

The choice of axle is one of those adjustments that makes a real difference on track, especially in categories where the regulations limit the motor and tyres, and the battle is fought in mechanical preparation. A hollow axle with titanium coating reduces rotating mass compared to a conventional solid axle, resulting in cleaner acceleration out of corners and less strain on the braids and bearings.

The calibration of the steel ensures that the axle fits precisely in the bearings and crown gear, avoiding vibrations or misalignments that could impair rear tyre grip. The titanium coating, in turn, acts as a barrier against abrasion at contact points with bearings and supports, which is particularly useful in prolonged use conditions or on high-traction tracks.

Assembly and preparation

To get the most out of this axle, it is advisable to check the alignment of the rear end before final assembly and ensure that the bearings are properly squared in the chassis. A small misalignment can negate the advantages of a precision axle like this. If the assembly is done with a crown gear and pinion from Sloting Plus or another reference brand, make sure that the tooth spacing is correct before permanently securing the crown gear.

Frequently asked questions

What advantage does the hollow interior provide over a solid axle?

The hollowing reduces the weight of the axle, decreasing inertia in the rear end. The car accelerates and decelerates more nimbly, especially on tracks with many tight corners.

Does the titanium coating affect the outer dimensions of the axle?

The applied titanium layer is approximately 8 µm, a minimal thickness that does not appreciably alter the outer diameter of 2.38 mm or the compatibility with standard bearings of that size.

Is it compatible with 3/32'' bearings?

Yes. The diameter of 2.38 mm is equivalent to 3/32'', a standard measurement in slot, so it is compatible with bearings of that inner diameter.

How should I secure the crown gear to this axle?

The securing method depends on the type of crown gear you are using (with adjustment screw, adhesive, or interference fit). Follow the manufacturer's instructions for the crown gear and ensure it is perfectly centred to avoid vibrations.

How many units are included in the packaging?

The bag includes 1 unit.

The Sloting Plus SP042155 is a hollow axle machined from calibrated stainless steel with an approximately 8 µm titanium coating, measuring 55 mm in length and 2.38 mm (3/32'') in diameter, weighing just 1.20 g. Designed for slot car preparation, it combines reduced rotational mass with enhanced wear resistance, making it a precise and durable choice for club racing and competitive slot car tuning.