Why Choose RE30040?
RE30040 offers a balanced combination of rotational accuracy and structural rigidity, making it suitable for systems that require stable performance under continuous and dynamic operating conditions.
Its crossed roller design helps maintain consistent load distribution and smooth motion behavior, improving system stability and reducing performance variation in medium-load precision equipment.
This model is particularly suitable for applications where both reliability and mechanical balance are critical.
Technical Parameters (RE30040)
| Inner Diameter (d) | 300 mm |
| Outer Diameter (D) | 405 mm |
| Roller Pitch Diameter (Dpw) | 351.6 mm |
| Width (B) | 40 mm |
| Chamfer (rmin) | 2.5 |
| Shoulder Size (ds) | 326 |
| Shoulder Size (Dh) | 377 |
| Basic Load Rating (Radial) Cr | 212 kN |
| Basic Load Rating (Radial) Cor | 409 kN |
| weight | 17.2 kg |
| Accuracy Grade | P5 / P4 / P2 |
Check More Type of RE Series Crossed Roller Bearing
Application Scenarios of RE30040
Stability-Centered Precision Manufacturing Framework
Precision Workshop Environment
The workshop is organized for stable medium-scale production, focusing on controlled machining flow and consistent component handling. Each processing stage is arranged to support accuracy retention during repeated manufacturing cycles.
Process-Oriented Production Setup
Production operations follow a structured workflow designed to maintain uniformity across batches. Attention is placed on machining stability and coordinated assembly processes to ensure consistent mechanical performance.
Integrated Manufacturing Capability
The factory integrates multiple production stages within a coordinated system, allowing efficient transition from raw processing to final assembly while maintaining quality consistency across operations.
RE30040 Crossed Roller Bearing Technical FAQ
From a mechanical design perspective, how should the load path in RE30040 be interpreted?
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In RE30040, the load is transmitted through crossed cylindrical rollers arranged orthogonally at 90°. This configuration creates two alternating load paths within the same raceway, allowing simultaneous support of radial, axial, and overturning moment loads. Engineers typically evaluate it as a coupled load distribution system rather than independent directional load components.
Why is RE30040 considered highly sensitive to mounting surface flatness?
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Because the bearing relies on uniform roller contact across a large diameter raceway, any deviation in mounting flatness directly alters preload distribution. Even micrometer-level distortion can cause localized stress concentration, leading to torque fluctuation and reduced rotational consistency in precision systems.
How does system rigidity influence the actual performance of RE30040?
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The bearing itself has high intrinsic stiffness, but the overall system rigidity is often governed by the housing and support structure. If the mounting frame deflects under load, the bearing will experience uneven internal loading, which manifests as increased running torque variation rather than immediate mechanical failure.
Why is torque fluctuation an important diagnostic parameter for RE30040 systems?
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Torque fluctuation reflects internal contact uniformity. In crossed roller systems like RE30040, abnormal torque variation often indicates uneven preload distribution, contamination effects, or structural deformation. Engineers often use torque signature analysis as a proxy for system health monitoring.
What type of error sources should be considered when integrating RE30040 into precision stages?
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Key error sources include:
- Raceway roundness deviation
- Housing machining tolerance stack-up
- Misalignment between inner and outer rings
- Elastic deformation under eccentric loading
These factors collectively affect angular positioning accuracy more than the bearing's nominal grade alone.
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