High Rigidity and High Precision with Zero Clearance Rolling Guideways
The essential multi-degree-of-freedom joints for parallel mechanisms have conventionally been obtained 2 to 3 degrees of freedom with combinations of spherical joints. However, such spherical joints combinations often lead to structural complexity and bulkiness. There are multi-degree-of-freedom sliding spherical ball bearings available, but they come with large frictional resistance and internal clearance issues. Hephaist has developed SRJ – Spherical Rolling Joints as the solutions to all these issues.
Features
- High precision
The moving parts of SRJ are preloaded rolling bearing structure, and it makes SRJ achieved high accuracy with low frictional resistance and zero clearance.
- Highly Suited for Parallel Mechanisms
Optimal for parallel mechanisms requiring high precision, high rigidity, and compactness.
- Downsizing
SRJ achieving higher rigidity and downsizing compared to a combination of rolling bearings with 3 degrees of freedom.
- Super-Precise Spherical Surface Processing
Unique Hephaist processing technology provides super-precise spherical surfaces.
Dimension Chart
- Delivered with rust-preventive oil as standard. If the customer specifies a grease, it will be applied.
- When the axis is turned, the retainer projects beyond the bottom of the housing, so the mounting face on the other side has to be machined to create a recess.
Material :- Housing：SUJ2/ROD：SUJ2・S45C/Retainer：C3604A-LCd
Product Specifications
Model Configuration
The standard product material is SUJ2 (high carbon, high chromium bearing steel).
Stainless steel is also used upon request.
Surface treatment (low-temperature black chromium treatment) can also be arranged.
Precision class SP is available for items SRJ008 to SRJ032.