China factory CHINAMFG Roller Linear Guide Rail for Automobile Zl Series

Product Description

ZL/ZLL Four-way Equal-load Heavy-duty Narrow Roller Linear Motion Xihu (West Lake) Dis.

Feature 1: The sliding rail and the sliding block are in contact with each other through balls, so the shaking is small, which is suitable for equipment with precision requirements.

Feature 2: Because of the point-to-surface contact, the frictional resistance is very small, and fine movements can be performed to achieve high-precision positioning of control devices, etc.

Feature 3: Because the ball has its own rolling groove, the force on the rotating surface will be dispersed, so it has a larger allowable load.

Feature 4: The linear guide is not easy to generate frictional heat during operation, and is not easy to be deformed by heat, so it is suitable for high-speed motion.


Automation equipment, high-speed transportation equipment, precision measuring instruments, semiconductor equipment, woodworking machinery

SJAG-ZL ( Four Directional Equal Load Heavy Duty Narrow Type )

Model Component size(mm) Slider size (mm) Rail size(mm)
H H1 N B B1 C L1 L K1 G M T H2 H3 WR HR D h d P E
SJAG 25ZL 40 5.5 12.5 48 35 6.5 35 64.5 97.9 20.75 12 M6*8 9.5 10.2 10 23 23.6 1l 9 7 30 20
SJAG 25ZLL 50 81 114.4 21.5
SJAG 30ZL 45 6 16 60 40 10 40 71 109.8 23.5 12 M8*10 9.5 9.5 13.8 28 28 14 12 9 40 20
SJAG 30ZLL 60 93 131.8 24.5
SJAG 35ZL 55 6.5 18 70 50 10 50 79 124 22.5 12 M8*12 12 16 19.6 34 30.2 14 12 9 40 20
SJAG 35ZLL 72 106.5 151.5 25.25
SJAG45ZL 70 8 20.5 86 60 13 60 106 153.2 31 12.9 M10*17 16 20 24 45 38 20 17 14 52.5  
SJAG45ZLL 80 139.8 187 37.9
SJAG55ZL 80 10 23.5 100 75 12.5 75 125.5 183.7 37.75 12.9 M12*18 17.5 22 27.5 53 44 23 20 16 60 30
SJAG55ZLL 95 173.8 232 51.9
SJAG65ZL 90 12 31.5 126 76 25 70 160 232 60.8 12.9 M16*20 25 15 15 63 53 26 22 18 75 35
SJAG65ZLL 120 223 295 67.3
SJAG 85ZLL 110 15 35.5 156 100 140 254 349 14 M18*25 30 21 85 73 35 28 24 90 45
SJAG 100ZLL 120 15 50 200 130 200 286 394 16 M20*27 33 23 100 80 39 32 26 105 52.5
SJAG 125ZLL 160 24.5 57.5 240 184 205 360 491 16 M24*30 40 23 125 115 48 45 33 120 60

ZL Type Xihu (West Lake) Dis. Sub Mounting Connection Dimensions

Fixing bolt size of slide rail Basic dynamic load rating Basic static load rating Allowable static moment Weight
(mm) C(kN) Co(kN) MR MP MY Slide Rail
M6×20 27.7 57.1 0.758 0.605 0.605 0.55 3.08
33.9 73.4 0.975 0.991 0.991 0.7
M8×25 39.1 82.1 1.445 1.06 1.06 0.82 4.41
48.1 105 1.846 1.712 1.712 1.07
M8×25 57.9 105.2 2.17 1.44 1.44 1.43 6.06
73.1 142 2.93 2.6 2.6 1.86
M12×35 92.6 178.8 4.52 3.05 3.05 2.97 9.97
116 230.9 6.33 5.47 5.47 3.97
M14×45 130.5 252 8.01 5.4 5.4 4.62 13.98
167.8 348 11.15 10.25 10.25 6.4
M16×50 213 411.6 16.2 11.59 11.59 8.33 20.22
275.3 572.7 22.55 22.17 22.17 11.62
M20 460 945.2 51420 45600 45600 14.7 35.2
M24 547 1330 73140 61200 61200 24.5 46.8
M30 1040 1924 123176 123176 123176 46 84.6




1. Why choose CHINAMFG China?

Over the past 14 years, CHINAMFG has always insisted that “products and services” start from Japanese industry standards,taking ZheJiang standards as the bottom line, actively invest in the development of new transmission components and self-experiment and test. With the service tenet of “exceeding customer expectations”, establish a “trusted” partnership.

2. What is your main products ?

We are a leading manufacturer and distributor of linear motion components in China. Especially miniature size of Ball Screws and Linear Actuators and linear motion guideways. Our brand “KGG” stands for ” Know-how,” ” Great Quality,” and ” Good value” and our factory is located in the most advanced city in China: ZheJiang with the best equipment and sophisticated technology, completely strict quality control system. Our aim is to supply world leader class linear motion components but with most reasonable price in the world.

3. How to Custom-made (OEM/ODM)?

If you have a product drawing or a sample, please send to us, and we can custom-made the as your required. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.

4. When can I get the quotation?

We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price,please call us or tell us in your email so that we will regard your inquiry priority.

5. How can I get a sample to check the quality?

After confirmation of our quoted price, you can place the sample order. The sample will be started after you CHINAMFG back our detailed technical file.

6. What’s your payment terms?

Our payment terms is 30% deposit,balance 70% before shipment.

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Application: Precision Automation Equipment
Material: Steel
Structure: Linear Motion Transmission
Installation: Automatic Machinery
Driven Type: Roller Linear Drive
Carrying Capacity: Weight Level


linear rail

What is the role of linear rail materials and coatings in performance and longevity?

The materials and coatings used in the construction of linear rails play a crucial role in determining their performance and longevity. Here’s an overview of their significance:


  • High-Strength Alloys: Linear rails are often constructed using high-strength alloys, such as hardened steel or aluminum. These materials provide the necessary strength and rigidity to withstand the stresses of continuous linear motion, ensuring stability and preventing deformation under load.
  • Corrosion-Resistant Materials: In environments where corrosion is a concern, linear rails may be made from corrosion-resistant materials or coated with anti-corrosive substances. Stainless steel or specialized alloys with corrosion-resistant properties enhance the longevity of the rails, particularly in industrial settings with exposure to moisture or harsh chemicals.
  • Self-Lubricating Materials: Some linear rails incorporate self-lubricating materials, such as polymers with embedded solid lubricants. These materials reduce friction between the rail and carriage, improving efficiency and minimizing wear. Self-lubricating properties contribute to smoother linear motion and extend the lifespan of the rail system.


  • Anti-Friction Coatings: Coatings with anti-friction properties, such as Teflon or other low-friction materials, are applied to reduce friction between the rail and carriage. Anti-friction coatings enhance the efficiency of the linear rail system by minimizing heat generation and wear, resulting in smoother and more reliable linear motion.
  • Corrosion-Resistant Coatings: Linear rails used in corrosive environments may be coated with protective layers to resist corrosion. These coatings act as a barrier, preventing exposure to corrosive elements and preserving the structural integrity of the rail over time.
  • Hard Coatings: Hard coatings, such as nitriding or various forms of surface hardening, are applied to increase the hardness and wear resistance of the rail’s surface. This protects against abrasion and extends the lifespan of the rail, especially in high-load applications.
  • Dry Film Lubricants: Some coatings incorporate dry film lubricants that provide long-lasting lubrication to the rail and carriage interface. These coatings reduce friction, enhance performance, and contribute to the overall reliability of the linear rail system.

The careful selection of materials and coatings is essential for tailoring linear rails to specific application needs. By considering factors such as environmental conditions, load requirements, and desired performance characteristics, engineers can choose the most appropriate combination to optimize the performance and longevity of the linear rail system.

linear rail

Can you explain the principles behind linear rail operation and load-bearing capabilities?

The operation of linear rails and their load-bearing capabilities are governed by fundamental principles:

1. Rolling Contact: Linear rails typically utilize rolling contact elements, such as recirculating ball or roller bearings, between the rail and the carriage. These elements reduce friction and enable smooth motion by rolling along the profiled surface of the rail.

2. Profiled Rail Design: The rail is designed with a specific profile, often featuring raceways for the rolling elements. This profile provides guidance to the carriage, ensuring that it moves along a predetermined path without deviations.

3. Load Distribution: The load-bearing capabilities of linear rails are achieved through the distribution of the applied load across the rolling elements. This design allows for the effective support of loads, both radial and axial, while minimizing stress on individual components.

4. Rigidity: Linear rails are designed to be rigid, preventing deflection or bending during operation. This rigidity is essential for maintaining accuracy and precision, especially in applications where high loads or forces are involved.

5. Lubrication: Proper lubrication is crucial for reducing friction and minimizing wear between the rolling elements and the rail. Lubrication also helps dissipate heat generated during operation, contributing to the overall efficiency and longevity of the linear rail system.

6. Materials and Construction: The materials used in the construction of linear rails, such as hardened steel or reinforced alloys, contribute to their load-bearing capabilities. The choice of materials ensures durability and resistance to wear under various operating conditions.

Overall, the combination of rolling contact, profiled rail design, load distribution, rigidity, lubrication, and appropriate materials enables linear rails to operate efficiently and support varying loads in industrial applications. Understanding these principles is essential for selecting the right linear rail system based on the specific requirements of a given application.

linear rail

How do linear rails differ from other linear motion components like linear guides or bearings?

While linear rails, linear guides, and bearings are all components used in linear motion systems, they differ in their design, functions, and applications:

Linear Rails: Linear rails typically consist of a long, rigid rail and a carriage that moves along the rail. The rail has a specially designed profile to provide guidance, and the carriage supports and carries the load. Linear rails are known for their ability to handle high loads, offer precise linear motion, and reduce friction for smooth movement.

Linear Guides: Linear guides encompass a broader category that includes linear rails. Linear guides refer to any mechanism that guides linear motion. Linear rails are a specific type of linear guide with a distinctive profile. Linear guides, in a general sense, can include other mechanisms like dovetail slides, boxway guides, and more, each with its own design and application.

Bearings: Bearings are components that reduce friction between moving parts and support radial or axial loads. While linear rails may incorporate bearings within their design, bearings, in a broader sense, can be standalone components used to support rotating or linear motion. Linear bearings, for example, specifically support linear motion and may be used independently or as part of a linear rail system.

In summary, linear rails are a specific type of linear guide with a defined rail and carriage design, whereas linear guides encompass a broader category. Bearings, on the other hand, are components that reduce friction and support loads, and linear bearings specifically cater to linear motion.

China factory CHINAMFG Roller Linear Guide Rail for Automobile Zl Series  China factory CHINAMFG Roller Linear Guide Rail for Automobile Zl Series
editor by Dream 2024-05-16