Linear guide rails are critical components in automation, robotics, 3D printer and CNC machinery, enabling high-accuracy linear motion with minimal friction. Engineered for rigidity, smooth operation, and long-term reliability, they transform rotational motion into precise linear movement – essential for applications demanding micron-level repeatability.

Key Features & Benefits:

1,Unmatched Precision: Ground rails and ball bearings ensure ±0.01mm accuracy for tasks like laser cutting or semiconductor manufacturing.

2,High Load Capacity: Wide-series models (e.g., KPW) support heavy loads up to 60kN without deformation.

3,Durability: Corrosion-resistant materials (CS/SS) and hardened steel tracks extend service life in harsh environments.

4,Versatility: Available in standard lengths (30mm–1500mm) and custom sizes to fit compact machinery or large-scale systems.

Design features of narrow type miniature linear guide rail:

1. Tiny and light weight, suitable for miniature equipment.

2. Gothic arch contact design can sustain loads from all directions and offer high rigidity and high accuracy.

3. Specification with ball retainers would avoid ball falling when the blocks are removed from rails.

4. Interchangeable types are available in certain sizes and precision grades.

Why Choose Modern Linear Guides?

Advanced designs feature optimized preload levels (ZF/Z0/Z1) to eliminate backlash, integrated seals for dust/liquid resistance, and modular accessories for swift installation. Whether upgrading legacy equipment or designing new automation cells, linear guide rails boost productivity while reducing maintenance costs.

Linear Guide Rail Model Numbering System

Upgrade your machinery with our high-performance linear guide rail model KP series, designed for CNC, robotics, and automation. Featuring high rigidity, smooth motion, and long service life, our rails ensure ultra-precise positioning with options for different lengths (e.g., R1500), preload levels (ZF/Z0/Z1), and materials (CS/SS). Ideal for heavy-load applications, these guide rails come in standard (C), long (L), or short (S) versions with customizable accuracy (C/H/P). Boost efficiency and reduce maintenance—trusted by engineers worldwide!

KP - W - 9 - C - E - 1 - R -1500 - E - C - ZF - CS - 5/5

KP: Product series (KP Series)

W: Wide type (No marking = Standard type)

9: Size specification

C: Standard length (L = Long, S = Short)

E: Special slider processing (No marking = Standard)

1: Number of sliders per rail

R1500: Rail length (1500mm)

E: Special rail processing (No marking = Standard)

C: Accuracy grade (C/H/P)

ZF: Preload level (ZF/Z0/Z1, default = Z0)

CS: Material – Bearing steel (SS = Stainless steel)

5/5: Rail pitch (short spacing)

Linear guide Rail Drwing And Dimensions

Linear guide rails are essential components in precision machinery, automation systems, and CNC equipment. Understanding their drawings and dimensions is crucial for proper selection, installation, and maintenance. This article provides an in-depth look at linear guide rail technical specifications, helping engineers and buyers make informed decisions.

When selecting a linear guide rail, consider the following dimensions:

1,Width (W) – Determines rail stability and load distribution.

2,Height (H) – Affects rigidity and moment resistance.

3,Length (L) – Custom-cut or standardized lengths for different applications.

4,Bolt Hole Spacing (P) – Ensures proper mounting alignment.

5,Rolling Element Size – Influences smoothness and load capacity.

How to Read a Linear Guide Rail Drawing:

1,Check the Title Block – Identifies model number, material, and tolerance.

2,Examine the Side & Top Views – Shows rail profile and groove details.

3,Review the Section View – Displays internal rolling element channels.

4,Verify the Tolerance Table – Ensures precision fit with carriages/blocks.

USAGE PRECAUTIONS：

The slider is equipped with a retainer (metal wire) to prevent the balls from falling out. Therefore, when installing or removing the slider, please use the rail clamp tool provided by our company for assistance.For non-interchangeable products, if the combination of the slider and rail is altered, the radial clearance and precision cannot be guaranteed.The reference surface is located on the side of the slider and rail where the linear groove is present. When using, always align the reference surfaces of both components.The product precision is measured after the rail is fixed. (It is not the value before the rail screws are tightened.) Slight deformation of the rail in its natural state can be corrected after installation and tightening, ensuring no issues in use.Before shipment, please confirm with the Keenpa sales representative whether lubrication (grease or oil) is required.

Replacement Brands & Model Numbers

When replacing linear guide rails in industrial machinery, CNC equipment, 3D printer or automation systems, finding compatible alternatives is crucial for minimizing downtime and maintaining performance. This guide provides a cross-reference list of popular linear guide rail brands and their equivalent models to help engineers and maintenance teams make informed decisions.

Why Consider Replacement Brands?

1,Cost Savings – Some brands offer similar quality at lower prices.

2,Availability – Certain models may be discontinued or have long lead times.

3,Performance Matching – Cross-referencing ensures equivalent load capacity and precision.

Key Considerations When Replacing Linear Guide Rails:

1,Dimensional Compatibility – Check width, height, hole spacing, and rail length.

2,Load Capacity – Ensure dynamic/static load ratings match or exceed OEM specs.

3,Precision Grade – Verify accuracy levels (Standard, High, or Ultra-Precision).

4,Sealing & Lubrication – Match IP ratings and lubrication requirements.

Choosing the right replacement linear guide rail requires careful comparison of dimensions, load ratings, and precision grades. By using cross-reference tables and consulting technical datasheets, you can ensure seamless compatibility and optimal machine performance.

In the world of industrial automation, CNC machining, and robotics, precision linear motion is non-negotiable. Our KP Series Linear Guide Rails deliver unmatched accuracy, durability, and versatility, tailored to fit applications from compact electronics assembly to heavy-duty manufacturing. With standard and wide models (KP/KPW), multiple size options, and custom lengths, we provide solutions engineered for excellence.

The table below shows the standard and maximum lengths for KP/KPW slide rails. To use lengths exceeding the maximum, splicing is required.

For details, contact KEEPA (Keenpa Precision Technology Co.,Ltd).

For custom lengths, the dimension E is recommended to match the values in the table.

If dimension L is too long, it may cause instability after installation and affect precision.

Linear Guide Rail Purchase FAQS 

1. What is a linear guide rail?

A linear guide rail is a precision mechanical component used to provide smooth and accurate linear motion in machinery and automation systems. It consists of a rail and a sliding block (carriage) with rolling elements (balls or rollers) to reduce friction.

2. What are the main types of linear guide rails?

Ball-type linear guides (most common, low friction, moderate load capacity).

Roller-type linear guides (higher load capacity, better rigidity).

Dovetail slides (non-rolling, used in heavy-duty applications).

Magnetic or air-bearing guides (for ultra-precise, frictionless motion).

3. What are the key advantages of linear guide rails?

High precision and repeatability.

Low friction for smooth motion.

High rigidity and load capacity.

Long service life with proper maintenance.

Suitable for high-speed applications.

4. How do I choose the right linear guide rail?

Load capacity (static & dynamic loads).

Precision requirements (accuracy grade: Normal, High, Precision).

Speed & acceleration.

Environmental conditions (dust, moisture, temperature).

Size & mounting constraints.

5. What lubrication is required for linear guide rails?

Most linear guides use grease (e.g., lithium-based) or oil lubrication.

Some come with self-lubricating options (maintenance-free).

Lubrication intervals depend on usage (check manufacturer specs).

6. How do I maintain linear guide rails?

Regularly clean to remove dust/debris.

Re-lubricate as recommended.

Inspect for wear, misalignment, or damage.

Avoid overloading or shock impacts.

7. What causes premature wear in linear guide rails?

Contamination (dust, chips, moisture).

Improper lubrication.

Misalignment or incorrect installation.

Excessive load or vibration.

8. Can linear guide rails be used in harsh environments?

Yes, some models feature:

Seals or scrapers (for dust/liquid protection).

Stainless steel construction (corrosion resistance).

Special coatings (for extreme conditions).

9. How do I install linear guide rails properly?

Ensure a flat and rigid mounting surface.

Align rails precisely (parallelism is critical).

Tighten bolts evenly to avoid distortion.

Check for smooth movement after installation.

10. What’s the difference between profiled rails and round shaft guides?

Profiled rails (square/rectangular) offer higher rigidity and load capacity.

Round shaft guides (supported rails) are simpler and cheaper but less rigid.

11. Can I replace just the sliding block (carriage) or rail separately?

Typically, the rail and block are matched sets (replacing only one may affect performance).

Always check manufacturer recommendations.

12. What are common applications of linear guide rails?

CNC machines, 3D printers, robotics.

Medical devices, semiconductor equipment.

Automated assembly lines, packaging machines.