RGH45CA Roller Type Linear Guide Block High Assembly Square Type Standard Length

RGH45CA is a 45-size high square roller linear guide block designed for heavy-load linear motion systems where rigidity, mounting stability, and load margin are more important than a compact light-duty structure. As a CA type block, it uses a standard block length with top mounting, making it suitable for machine axes that need strong support but do not require the longer body of the HA version.

With a dynamic load rating of 92.6 kN and a static load rating of 178.8 kN, RGH45CA is positioned for medium-to-large CNC machines, milling equipment, heavy automation axes, and precision motion platforms. The roller structure provides line contact with the raceway, helping the block support heavier working loads and reduce elastic deformation during repeated positioning, cutting, or transfer movement.

For installation, RGH45CA uses M10 × 17 block mounting threads and is matched with RGR45 rails using M12 × 35 rail mounting bolts. The 52.5 mm rail hole pitch and 22.5 mm standard rail end distance should be checked carefully in replacement projects, especially when the existing machine base or rail hole pattern is already fixed.

Compared with smaller RG sizes, RGH45CA provides a larger mounting base and stronger load support. Compared with RGH45HA, this CA version keeps the block shorter and more practical for standard heavy-duty axes where installation space, rigidity, and cost need to be balanced.

To support accurate model selection, the code of RGH45CA roller linear guide block can be understood as follows:

RG: Roller type linear guideway series
H: Square block type
45: Size 45 series, with standard rail width WR = 45 mm
C: Heavy load block type
A: Mounting from top

Common option suffixes:

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

In practical selection, RGH45CA refers to a 45-size square type roller linear guide block for heavy-load linear motion systems. The model should be matched with the corresponding RGR45 rail, while preload and accuracy grade should be selected according to the actual machine requirement.

• Available Preload: Z0 / ZA / ZB
• Available Accuracy Grade: H / P
• Matched Rail: RGR45 rail
• Lubrication: Grease or oil lubrication can be selected according to machine speed, load, and maintenance method
• Rail Length: Standard or cut-to-length rail can be supplied according to the required travel length or drawing
• Typical Use Level: Suitable for high-rigidity and heavy-load linear motion systems

Photo Reference:

The photos above show the actual RGH45CA standard square roller block, including the machined mounting surface, side profile, sealing area, and overall surface finish. They are provided to help customers check the real product structure instead of relying only on catalog drawings.

For replacement review, the photos should be checked together with the drawing and technical specifications before order confirmation.

• Roller Contact for Higher Rigidity

The RGH45CA roller linear guide block uses a roller contact structure instead of a conventional ball contact design. This helps increase contact stiffness between the rolling elements and the raceway, making the block more suitable for heavy-load linear motion systems where deformation control is important.

• Strong Load Capacity in 45 Size

RGH45CA provides a dynamic load rating of 92.6 kN and a static load rating of 178.8 kN. This gives the block a solid load margin for 45 size guideway applications, especially when the axis needs stronger support than smaller RG roller guide models.

• Better Support Against Moment Loads

For machine axes with offset loads or changing force directions, moment resistance is an important factor. RGH45CA has rated static moments of MR 4.52 kN·m, MP 3.05 kN·m, and MY 3.05 kN·m, helping the block maintain stable support under radial, pitching, and yawing load conditions.

• Standard CA Block Length

As the CA standard block version, RGH45CA offers a practical balance between rigidity, load capacity, and installation space. Compared with the HA long block type, the CA version keeps the block body shorter, which makes it easier to use in standard heavy-duty axis layouts.

• Square Block with Top Mounting

RGH45CA adopts a high square block structure with mounting from the top. The block mounting thread is M10 × 17, giving the block a firm fixing method for machine tables, slide bases, and heavy-duty mechanical assemblies.

• Matched RGR45 Rail System

RGH45CA is designed to work with the corresponding RGR45 roller guide rail. This keeps block and rail selection clear for new machine design, rail cutting, and matched assembly supply.

• Stable Running Under Heavy Working Load

The roller guide structure helps RGH45CA maintain stable motion when the guideway is exposed to higher working loads. For equipment that requires repeatable linear movement, firm mechanical support, and improved rigidity, this model provides a stronger option than light-duty ball type linear guide blocks.