Ball bearing shaft of 2.38 mm (3/32'') -ABEC

Precision and performance in every turn: the ABEC 5 ball bearing for 2.38 mm axle from Sloting Plus

The SP055002 is the top reference ball bearing within the Sloting Plus catalogue for the 3/32'' (2.38 mm) axle. Made of steel with ABEC 5 certification, a single lip, and designed to fit into 4.75 mm mounting holes, this bearing provides a real and measurable reduction in friction in any assembly where it is incorporated.

Technical specifications

• Axle diameter: 2.38 mm (3/32'')
• Mounting hole: 4.75 mm
• Material: steel
• Certification: ABEC 5 (single lip)
• Weight: 0.2 g per unit
• Contents: bag with 2 units

What differentiates the SP055002 from the SP055000?

Sloting Plus offers two references for this axle diameter. The SP055002 has a tighter manufacturing tolerance, characteristic of the ABEC 5 certification, resulting in less vibration, better concentricity, and a smoother and more consistent rotation. It is the right choice when seeking a higher level of preparation: club competition, timed events, or simply when we want to maximise the assembly. If the use is more recreational and budget is a factor, the SP055000 perfectly meets those needs.

Function and performance on track

Ball bearings replace the brass or bronze bushings that most metal and fibre chassis come with as standard, and that some anglewinder mounts —motor supports— also incorporate as standard housing. Their function is to reduce friction at the contact point between the axle and the chassis, freeing up power that would otherwise be lost to heat and wear. In a properly prepared car, the effect is noticeable both in top speed and consistency throughout the race.

Assembly and preparation

The bearing comes factory lubricated, but this initial lubrication is not permanent. Before the first race —and regularly thereafter— it is advisable to apply a small amount of specific ball bearing lubricant to both sides. Sloting Plus recommends LUBBOIL Nº6 as the first option, although LUBBOIL Nº1 or another specific lubricant for bearings is also valid. After application, always wipe off the excess with a cloth to prevent the oil from contaminating the track or reaching the braids and guide.

Who is this bearing intended for?

This component is of particular interest to preparers and club drivers looking to minimise friction in their setups. It is also a very interesting option for those working with custom-made fibre or metal chassis, or who have acquired an anglewinder mount compatible with ball bearings and want to equip it with the best bearing available for this axle diameter.

Common mistakes to avoid

• Not lubricating before first use. Although it comes lubricated from the factory, that lubricant does not guarantee the necessary protection during a running session. Always lubricate before use.
• Excess lubricant. A drop on each side is sufficient. Excess does not improve performance and can dirty the track.
• Confusing with the SP055000. Both references are for the same axle, but the SP055002 has superior manufacturing quality. Check which one you need before ordering.
• Not cleaning the bearing periodically. With use, the lubricant accumulates dust and debris. Regular cleaning and relubrication extend the bearing's lifespan.

Frequently asked questions

How many bearings do I need per car?

It depends on the chassis and configuration, but typically 2 bearings per axle (one on each side) are used. For a car with an independent rear axle, you would need at least 2 units, which is exactly what this bag includes. If the assembly requires more, adjust the number of bags accordingly.

Is it compatible with any metal or fibre chassis?

It is compatible with any chassis that has a 4.75 mm housing designed for this axle diameter. Always check the diameter of your chassis's mounting hole before installing the bearing.

How often should I lubricate it?

At a minimum, before each competition session. In intensive recreational use, once per session is also advisable. If you notice that the rotation becomes rougher or irregular, it is a sign that the bearing needs cleaning and relubrication.

Can I use any oil to lubricate it?

It is preferable to use a specific lubricant for slot ball bearings. Sloting Plus recommends LUBBOIL Nº6 or LUBBOIL Nº1. Avoid household oils or generic multipurpose lubricants, as they can deteriorate the bearing or attract dirt more easily.

What advantage does ABEC 5 certification have over a standard bearing?

The ABEC scale defines the dimensional and operational precision of a bearing. Level 5 guarantees tighter tolerances than an uncertified bearing, resulting in less vibration, better axle centring, and smoother rotation. In slot racing, this means less power loss and greater consistency in the car's performance.

The Sloting Plus SP055002 is a high-precision ABEC 5 steel ball bearing designed for 3/32'' (2.38 mm) axles, with a 4.75 mm housing diameter. Weighing just 0.2 g each and sold in a pack of two, these bearings are the top-tier option in the Sloting Plus range for reducing friction in metal and fibre slot car chassis. Essential for club racing preparation, anglewinder and inline motor setups, and any build where smooth, consistent axle rotation makes the difference. Compatible with all chassis featuring the standard 4.75 mm bearing housing for 3/32'' axles.