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professional manufacturer and distributor for special materials bearings
High-speed hybrid ceramic bearing for inline skates, skateboards and precision equipment.
The 608 RS Hybrid Ceramic Bearing is a high-performance deep groove ball bearing combining AISI52100 chrome steel rings with 6 Si₃N₄ (silicon nitride) ceramic balls and a reinforced nylon PA66 cage. The bearing is pre-lubricated with Super Lube oil and covered on one side with a non-contact NBR rubber seal. This hybrid construction delivers low density, low friction, high strength, and resistance to both electricity and magnetism. Compared with standard stainless steel bearings, the 608 RS offers up to 1.5× higher speed capability and 2–3× longer service life, with a maximum operating temperature of 220°C.
With a compact 8 mm bore, 22 mm outside diameter and 7 mm width, this bearing is widely used in inline skates, skateboards, scooters, and other high-speed rotational applications where smooth, low-drag performance and durability are essential. Suitable for athletes, racers and amateurs, the rolling resistance is reduced to a minimum after the lubricant is captured.
Need a 608 RS hybrid ceramic bearing?
Send TOJO your requirements for a technical evaluation and quotation.
| Parameter | Specification |
|---|---|
| Bearing No. | 608 RS |
| Bearing Type | Deep Groove Ball Bearing (Hybrid) |
| Rings Material | AISI52100 Chrome Steel |
| Balls Material | Si₃N₄ (Silicon Nitride), 6 balls |
| Cage Material | Reinforced Nylon PA66 |
| Seal Type | Single-side non-contact NBR rubber seal |
| Lubrication | Super Lube oil |
| Bore Diameter (d) | 8 mm |
| Outside Diameter (D) | 22 mm |
| Width (B) | 7 mm |
| Maximum Operating Temperature | 220°C |
| Weight | 10 g (0.010 kg) |
| Manufacturer | TOJO |
AISI52100 chrome steel rings combined with 6 Si₃N₄ ceramic balls deliver the strength of steel with the low density and low friction of ceramic, significantly reducing centrifugal forces and energy loss at high speeds.
Up to 1.5× higher speed capability compared with standard stainless steel bearings, making it ideal for inline skating, skateboarding, and other high-rpm applications.
Service life increased by 2–3× compared with stainless steel bearings, thanks to the superior wear resistance of Si₃N₄ ceramic balls and the durability of AISI52100 rings.
Si₃N₄ ceramic balls are electrically insulating and non-magnetic, preventing arcing damage and electrolytic corrosion in motors and precision equipment.
The bearing is pre-lubricated with Super Lube oil, and the lubricant is captured within the bearing to minimize rolling resistance for athletes, racers and amateurs.
Applicable for operating temperatures up to 220°C, suitable for demanding thermal conditions where standard bearings may degrade.
Covered on one side with a plastic non-contact cap made of NBR rubber, providing effective protection against contaminants while maintaining low friction and high-speed performance.
● Inline Skates & Rollerblades — smooth, low-drag rolling for speed and endurance.
● Skateboards & Longboards — fast acceleration and consistent performance under heavy use.
● Scooters & Fidget Spinners — high-speed rotation with minimal friction.
● Electric Motors & Fans — electrical insulation prevents current-induced damage.
● Precision Equipment — instruments requiring low friction and high rotational accuracy.
TOJO BEARING COMPANY specializes in special-material bearing development, manufacturing and application support. Application-specific solutions can be evaluated according to:
Bearing dimensions
Ceramic ball material
Cage material
Seal type
Lubrication
Precision grade
Radial clearance
Temperature
Speed
If the standard 608 RS configuration does not meet your requirements, send TOJO your operating conditions and bearing specifications for evaluation.
The 608 RS has a 8 mm bore, 22 mm outside diameter and 7 mm width, with a weight of approximately 10 g.
A hybrid bearing uses steel rings (AISI52100) with ceramic balls (Si₃N₄), while a full ceramic bearing uses ceramic for both rings and balls. Hybrid bearings offer a balance of cost, load capacity, and ceramic ball benefits.
The bearing is pre-lubricated with Super Lube oil, which is captured within the bearing to minimize rolling resistance.
The maximum operating temperature is 220°C, making it suitable for demanding thermal conditions.
Yes. TOJO can evaluate material, dimensions, cage, seal, lubrication, precision and operating-environment requirements.
Looking for a 608 RS Hybrid Ceramic Bearing? Send us your:
● Required quantity
● Application
● Speed
● Radial and axial load
● Operating temperature
● Lubrication conditions
● Environmental requirements
● Precision requirements
TOJO engineers can evaluate your application and recommend a suitable hybrid ceramic bearing configuration.
TOJO BEARING COMPANY — Our Bearings, Your Solutions.
Our bearings, Your solutions!
NO.23 JIAHE ROAD XIAMEN CHINA
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