RB2008 Crossed Roller Bearing | High Precision Rotary Bearing
The RB2008 crossed roller bearing is a compact yet robust bearing designed for precision rotary motion applications. Built with cylindrical rollers arranged orthogonally between the inner and outer rings, the RB2008 provides exceptional rigidity and load capacity within minimal installation space. This structure allows the bearing to support radial, axial, and moment loads simultaneously, making it an ideal choice for equipment where both accuracy and compactness are critical.
Technical Specification
| Inner Diameter (d) | 20 mm |
| Outer Diameter (D) | 36 mm |
| Roller Pitch Diameter (Dpw) | 27 |
| Height (B B1) | 8 |
| Chamfer | 0.5 rmin |
| Shoulder Size (ds) | 23.5 |
| Shoulder Size (Dh) | 30.5 |
| Basic Load Rating (Radial) Cr | 3.23 kN |
| Basic Load Rating (Radial) Cor | 3.1 kN |
| Weight | 0.04 kg |
| Precision Grade | P5 / P4 /P2 optional |
| Material | Bearing steel (SUJ2 / 100Cr6) |
| Cage Material | Brass / Resin |
| Lubrication | Grease (standard) / Oil (optional) |
| Mounting | Integrated inner ring, separable outer ring |
Related Models
| Model | Inner Dia (mm) | Outer Dia (mm) | Width (mm) | Dynamic Load (Cr, kN) | Static Load (Cor, kN) | Weight (kg) |
|---|---|---|---|---|---|---|
| RB2008 | 20 | 36 | 8 | 3.23 | 3.1 | 0.04 |
| RB2508 | 25 | 41 | 8 | 3.63 | 3.83 | 0.05 |
| RB3010 | 30 | 55 | 10 | 7.35 | 8.36 | 0.12 |
| RB3510 | 35 | 60 | 10 | 7.64 | 9.12 | 0.13 |
Why Choose RB2008 from TEDIN Bearing
TEDIN Bearing specializes in precision crossed roller bearings for industrial automation, robotics, and machine tools. With advanced manufacturing and strict quality control, each RB2008 bearing is tested for dimensional accuracy, rotational precision, and preload consistency before delivery. Our engineering team can also provide custom preload configurations or surface treatments for specific operating environments.
Quality Assurance & Global Supply
Every RB2008 crossed roller bearing is produced under ISO9001-certified manufacturing standards. With customers across Europe, North America, and Asia, TEDIN offers short lead times, reliable logistics, and expert technical support for OEM and replacement applications.
RB2008 Crossed Roller Bearing – FAQ
How does the RB2008 maintain accuracy under variable loads?
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The bearing uses a precisely machined crossed roller arrangement that evenly distributes load in all directions. This prevents micro-deformation and maintains smooth rotation even when radial and axial loads fluctuate.
Can the RB2008 operate in cleanroom or vacuum environments?
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Yes. The RB2008 can be customized with stainless steel rings, low-outgassing lubricants, or special surface treatments to meet the cleanliness and stability requirements of vacuum or semiconductor equipment.
How does its separable outer ring design improve usability?
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The separable outer ring allows easy installation and precise preload adjustment. This design reduces assembly errors and ensures consistent performance across multiple units - a key advantage in automated production systems.
How can vibration or uneven rotation be prevented after installation?
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Check that the mounting surface is free from burrs or foreign matter and that both rings are evenly tightened. Uneven torque or misalignment may lead to rotational vibration. After installation, rotate the bearing manually to verify smooth movement before operation.
Is re-lubrication necessary after long storage periods?
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Yes. If the bearing has been stored for more than 12 months, it's recommended to clean off old grease and reapply fresh lubricant before use to ensure stable rotation and prevent initial torque spikes.
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