RGH30CA Roller Linear Guide Block for Heavy Load CNC Systems

RGH30CA is a 30 size CA roller linear guide block for CNC machines and other heavy-load motion systems. Compared with ball type blocks, the roller structure provides line contact rather than point contact, which helps improve stiffness and running stability under load. In the 30 size series, RGH30CA has a block length of 109.8 mm, with a basic dynamic load rating of 39.1 kN and a basic static load rating of 82.1 kN. It is suitable for machine tools, grinding equipment, and other applications requiring stable linear motion, higher rigidity, and reliable load support. For replacement or new selection, rail series, mounting dimensions, preload grade, and accuracy grade should be confirmed before ordering.

To support accurate model selection, the code of RGH30CA can be understood as follows:

• RG: Roller type linear guideway series
• H: Square block type
• 30: Size 30 series (standard rail width WR = 28 mm)
• C: Heavy load
• A: Mounting from top

Common option suffixes:

• Z0 / ZA / ZB: Light, medium, or heavy preload
• H / P: High, precision

The following specifications are based on the standard RGH30CA configuration. For replacement or custom builds, preload, accuracy grade, rail length, and sealing arrangement should be confirmed before order.

Photo Reference: The images above show the actual block structure, machining details, and surface finish of the RGH30CA standard block design. For replacement or interchange, rail series, mounting dimensions, preload grade, and accuracy grade should be confirmed before order.

RGH30CA can be used as a cross-reference model for selected 30 size roller guide blocks with similar mounting dimensions and standard block configuration. For replacement projects, rail series, block type, mounting dimensions, preload grade, and accuracy grade should be checked against the original assembly before ordering.

• Standard Reference: The following references are for model comparison and preliminary replacement review only. Final suitability should be confirmed against the original rail series, block dimensions, preload, and accuracy requirements before order.
• Performance Consideration: As the CA standard block version, RGH30CA provides a balanced combination of block length, rigidity, and load support for 30 size applications. It is suitable for systems requiring stable linear motion, reliable mounting support, and heavy-load performance. Preload grade, accuracy grade, and application conditions should be matched to the original assembly to maintain expected machine performance.
• Important Note: HIWIN RG series includes both interchangeable and non-interchangeable types. In HIWIN’s interchangeable type, blocks and rails can be freely exchanged within the same size and precision class. Cross-brand replacement should still be verified case by case based on dimensions and technical conditions.

• Higher Rigidity: The roller contact design provides higher rigidity and load support than ball-type guide blocks, helping maintain stable linear motion under heavy load.
• Balanced Standard Block Design: As the CA standard block version in the 30 size series, RGH30CA provides a balanced combination of block length, rigidity, and load support. It has a block length of 109.8 mm, with a basic dynamic load rating of 39.1 kN and a basic static load rating of 82.1 kN.
• Service Life Support: Compared with ball-type structures, the roller contact design helps reduce stress concentration under load, which supports longer running life in demanding linear motion applications.
• Configurable Sealing: Standard protection includes end seals and a bottom seal. Additional sealing options such as double seals and scrapers are available for applications exposed to chips, dust, or coolant.
• Replacement Review Friendly: This model can be considered for selected 30 size replacement projects, but final suitability should be confirmed against rail series, dimensions, preload, and accuracy requirements before order.

• CNC Machining Centers: Suitable for machining centers, plano millers, and other machine tools that require stable linear motion and higher rigidity under load.
• Heavy-Duty Automation Systems: Used in automation equipment and transport systems where reliable mounting support and heavy-load linear guidance are required.
• CNC Grinding and Cutting Equipment: Applicable to grinding machines and heavy-duty cutting machines that benefit from higher rigidity and load capacity.
• Injection Molding Machines: Suitable for molding equipment that requires reliable linear guidance under repeated load conditions.
• Electrical Discharge Machines: Also used in EDM and other systems requiring stable motion and rigid mounting support.
• Heavy-Duty Automation Systems: Used in automation equipment where the CA standard block design provides balanced rigidity, load support, and installation space for 30 size applications.

• Actual Product Photos: The photos shown on this page reflect the actual block structure, machining details, and surface condition of RGH30CA. Packaging method and surface protection can be confirmed according to order requirements.
• Tolerance and Assembly Control: Key dimensions, running parallelism, and assembly consistency are checked according to internal inspection standards. Available accuracy grades and preload options should be confirmed based on the required application conditions. The RG series provides multiple preload and accuracy classes for different working requirements.
• Supply and Delivery Support: Stock status can be checked quickly for standard models. For urgent replacement demand or project schedules, delivery options can be confirmed according to quantity, rail length, and machining requirements.
• Engineering Assistance: 3D STEP and CAD files are available for selected models. Our team can assist with cross-reference review, dimension checking, and replacement selection before order, especially for applications requiring stable heavy-load linear guidance.

For replacement projects, block length, rail width, preload grade, and accuracy grade should be checked before confirming final selection.