COMBI PLUS EVO bearing 29.5 mm.

Twelve years of evolution concentrated in the Sloting Plus COMBI PLUS EVO 29.5 mm Bearing

The COMBI PLUS EVO 29.5 mm (ref. SP053106) is not a complete redesign: it is the maturation of a component that has been tested for over twelve years on assembly tables and competition tracks. Sloting Plus has taken the DNA of the original COMBI PLUS, redesigned the interior of the bearing to optimise lubrication, and replaced the bearing material with high-quality brass. The result is a bearing that the driver notices from the first lap: less resistance, more fluidity, lower lap times.

Function and Performance

The main enemy of speed in slot racing is not a lack of power, but friction. A rear axle that spins with constant friction robs energy from the motor, generates heat, and wears out components prematurely. The COMBI PLUS EVO directly addresses this issue: the redesign of the interior of the bearing creates a natural "reservoir" of lubricant that acts continuously while the axle spins, emulating the principle of a crankcase in a combustion engine.

Additionally, there is an increase in weight compared to the previous model: the assembly weighs 1.15 g, 0.25 g more than the original version. Far from being a disadvantage, this small extra mass, located on the rear axle, increases the load on the drive wheels and improves traction, especially during corner exit accelerations.

Compatibility and Assembly

The COMBI PLUS EVO 29.5 mm is designed to work with 2.38 mm (3/32") axles, the most widely used standard in 1/32 slot racing. Its anchorage is compatible with housings of Ø 4.6 to 5 mm, making it suitable for 3D chassis and NSR triangular motor mounts or 3D mounts compatible with those measurements.

• Exterior Material: Duralumin.
• Bearing Material: High-strength brass.
• Axle Diameter: 2.38 mm (3/32").
• Total Length: 29.5 mm.
• Chassis Fit: Ø 4.6 to 5 mm.
• Weight: 1.15 g.
• Compatibility: 3D chassis and NSR triangular motor mounts or compatible.

Assembly and Preparation

To get the most out of the COMBI PLUS EVO, the initial setup process is simple but important: insert the axle through one end of the bearing and pour between five and seven drops of lubricant inside before closing the assembly. This saturates the internal reservoir and ensures constant lubrication from the very first moment. From there, the bearing self-regulates during operation.

If you use specific oils for bearings and brass bushings, such as those included in the Sloting Plus catalogue, the duration of the treatment is extended and the reduction in friction is more pronounced. Avoid excess lubricant that may migrate to the braids or guide.

Common Mistakes When Working with Bushing Bearings

• Dry Assembly: without initial lubricant, brass takes time to settle, and the first few meters of operation generate more wear than necessary.
• Forcing Fit on Out-of-Range Diameters: the COMBI PLUS EVO is designed for Ø 4.6–5 mm; an overly loose fit reduces precision and compromises axle alignment.
• Mixing with 3 mm Axles: this bearing is exclusive for 2.38 mm (3/32") axles. With an incorrect axle diameter, the play ruins any advantage.

Frequently Asked Questions

What is the difference between the original COMBI PLUS and the COMBI PLUS EVO?

The EVO incorporates an internal redesign of the bearing that improves lubricant retention and replaces the bearing material with higher quality brass. The result is a more pronounced reduction in friction and an increase in weight of 0.25 g, which favours rear traction.

What axle diameter is it designed for?

Exclusively for 2.38 mm (3/32") axles, the usual standard in 1/32 slot racing cars such as those from NSR, Slot.it, or Scaleauto.

Which chassis is it compatible with?

With 3D chassis and NSR triangular motor mounts or compatible 3D mounts that have a housing between Ø 4.6 and 5 mm.

How much lubricant should I apply during the first assembly?

Between five and seven drops of lubricant introduced from one end of the bearing before closing the assembly. This creates the internal reservoir that keeps lubrication active during operation.

Does the increase in weight compared to the previous model affect performance?

No. The increase of 0.25 g is located on the rear axle, which increases the load on the drive wheels and improves traction, especially during corner exits. On track, the balance is usually positive.

Can I use this bearing in an inline setup?

Yes, as long as the mount or chassis uses a housing within the range of Ø 4.6–5 mm and a 2.38 mm axle, regardless of whether the motor configuration is inline, sidewinder, or anglewinder.

The Sloting Plus COMBI PLUS EVO 29.5 mm bearing (SP053106) is a precision-engineered component combining duralumin and high-quality brass for 1/32 slot car racing. Designed for 2.38 mm (3/32") axles and compatible with NSR triangular motor pods and 3D chassis with 4.6–5 mm housings, it delivers a significant reduction in friction and improved rear traction. A must-have upgrade for competitive slot racing, available at Ministry of Hobby.