SRG20XV1UU+1180LH
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Overview |
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| Part Number | SRG20XV1UU+1180LH |
Brand: LILY ![]() |
Interchangeable With: THK |
Characteristics |
|
| System of Measurement | Metric |
| Series | Caged Roller LM Guide |
| Assembly Type | Low Assembly |
| Block Model | SRG20XV1UUH(GK)BLOCK |
| Block Type | Square Type |
| Load Type | Heavy Load |
| Rail Mounting Type | Locking |
| Mounting Hole Size (M) | M5*8 |
| Number of blocks | 1 |
| Standard Lubrication Nipple | PB107 |
| Rail Model | SRG20-1180LH |
| Number of Rail Holes | 39 |
Dimensions |
|
| Size | 20 mm |
| Assembly Height (H) | 30 mm |
| Distance from Block Bottom to Rail Bottom (H1) | 4.6 mm |
| Distance from Both Sides of Rail to Both Sides of Block (N) | 12 mm |
| Block Width (W) | 44 mm |
| Block Mounting hole Width (B) | 32 mm |
| Grease Nipple Length (G) | 4.5 mm |
| Block Mounting hole Length (C) | 36 mm |
| Block Length (L) | 86.2 mm |
| Rail Length | 1180 mm |
| Rail Width (WR) | 20 mm |
| Rail Height (HR) | 20 mm |
| Outer Diameter (D) | 9.5 mm |
| Hole Depth (h) | 8.5 mm |
| Inner Diameter (d) | 6 mm |
| Pitch (P) | 30 mm |
| End Distance (E) | 20/20 mm |
Performance |
|
| Accuracy Classs | High Precision H |
| Preload Code | ★No Preload, Radial clearance with Preload -0.8~0μm ★C1 Light Preload,Radial clearance with Preload -2~-0.8μm ★C0 Medium Preload,Radial clearance with Preload -2~-3μm |
| Basic Dynamic Rated Load (C) | 21 kN |
| Basic Static Rated Load (C0) | 46.9 kN |
| Static Rated Moment (MR) | 0.58 kN-m |
| Static Rated Moment (MP) | 0.48 kN-m |
| Static Rated Moment (MY) | 0.48 kN-m |
Properties |
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| Block weight | 0.28 kg |
| Rail weight | 2.58 kg/m |
The Roller Type Linear Guideway features a Square Type block, characterized by its symmetrical, cube-like profile that delivers exceptional rigidity and the ability to withstand high loads from multiple directions — including radial, reverse, and lateral forces. Unlike ball type guideways, the roller type utilizes cylindrical rollers as the rolling elements, providing a significantly larger contact area between the rollers and raceways, resulting in superior load capacity, higher rigidity, and enhanced resistance to deformation under extreme loading conditions, making it the ideal choice for heavy-duty industrial applications such as large-scale CNC machining centers and heavy gantry systems where maximum structural performance and precision are simultaneously required.
The Roller Type Linear Guideway is designed for Heavy Load applications, capable of withstanding exceptionally high radial, lateral, and reverse loads simultaneously. Unlike ball type guideways, the roller type utilizes cylindrical rollers as the rolling elements, providing a significantly larger contact area between the rollers and raceways, resulting in superior load capacity, higher rigidity, and enhanced resistance to deformation under heavy loading conditions, making it the ideal choice for demanding industrial applications such as large-scale CNC machining centers, heavy gantry systems, and heavy press machines where maximum load capacity and precision linear motion are simultaneously required.
The Roller Type Linear Guideway features a Low Assembly type, characterized by its minimized mounting configuration that positions the rail and block at the lowest possible installation height, maximizing space efficiency within the machine structure. Unlike ball type guideways, the roller type utilizes cylindrical rollers as the rolling elements, providing a significantly larger contact area between the rollers and raceways, resulting in superior load capacity, higher rigidity, and enhanced resistance to deformation under extreme loading conditions, making it the ideal choice for demanding industrial applications such as compact CNC machining centers and heavy flat-bed systems where an ultra-compact footprint, maximum load capacity, and precision linear motion are simultaneously required.
What is the defining characteristic of the Square Type block in a Roller Type Linear Guideway?
The Square Type block is defined by its symmetrical, cube-like profile that maintains an equal height and width dimension, creating a highly balanced and rigid structure. In the context of the Roller Type guideway, this square profile works in conjunction with the cylindrical roller rolling elements to deliver exceptional rigidity and multi-directional load resistance that significantly surpasses what a ball type guideway of equivalent size could achieve, making it uniquely capable of meeting the most demanding heavy-duty industrial load requirements with precision and reliability.
What are the typical applications best suited for a Heavy Load rated Roller Type Linear Guideway?
Heavy Load rated Roller Type Linear Guideways are deployed in the most demanding industrial applications where forces far exceed the capacity of ball type guideway systems. Typical applications include large-scale CNC machining centers performing deep cutting operations on hard materials where cutting forces are extreme and continuous; heavy gantry systems supporting massive tooling or workpiece assemblies where maximum rigidity and multi-directional load resistance are critical; large hydraulic and mechanical press machines where extreme compressive and lateral forces are applied repeatedly throughout the production cycle; heavy forging and stamping equipment where massive impact loads must be absorbed without compromising motion accuracy; and large aerospace and shipbuilding manufacturing systems where enormous structural components must be positioned with exceptional precision under very high and sustained loading conditions.
How does the Low Assembly type maintain the superior load performance of cylindrical rollers within a minimized installation height?
Maintaining the superior load performance of cylindrical rollers within the constraints of a minimized installation height is one of the most demanding engineering challenges of the Low Assembly Roller Type guideway. This is achieved through advanced internal geometry optimization that maximizes the roller contact line length and roller circuit density within the compact block envelope, combined with precision-ground rail and raceway surfaces manufactured to the tightest available tolerances. The raceway contact angle is specifically engineered to maximize load-bearing efficiency within the reduced cross-sectional area, ensuring that the superior load capacity inherent to roller type line contact geometry is preserved as fully as possible within the low assembly configuration — delivering a level of load performance within a compact footprint that no ball type guideway could match regardless of assembly height.





