Professional Linear Guide Manufacturer & Supplier in China | DLY
Precision Linear Guideway Solutions from a Trusted Manufacturer-DLY
DLY is a reliable linear guide factory providing precision CNC machine linear rail and roller linear guide rail solutions for industrial automation.Our main series include:
- HD Series – Heavy Load Type Linear Guide Rails Compatible with HG series
- ED Series – Low Profile Type Linear Guide Rails Compatible with EG series
- RD Series – Roller Type Linear Guideway Compatible with RG series
Besides standard models, we also support custom linear guide manufacturing based on drawings or samples.
If the model you need is not listed, please contact us and our team will assist you promptly.(export@dlybearing.com)
01
OEM/ODM Customization
Custom products available as per your requirements
02
ISO9001/CE/RoHS Certified
Compliant with EU standards, safe and exportable
03
Fast Global Delivery
Sea, air and land shipping supported worldwide
04
Professional After-Sales Service
Professional support with 1-year warranty
Who We Are Best For
As a professional linear guide manufacturer, we focus on serving serious B2B buyers in industrial automation & linear motion.
We are NOT a retail store. We specialize in long-term, stable bulk business.
You are our ideal customer if you are:
- Manufacturers & OEMs with regular production needs
- Automation equipment integrators with project-based orders
- Distributors & wholesalers looking for a reliable linear guide manufacturer
- Trading companies needing stable factory support
- Engineering firms requiring custom solutions from a professional manufacturer
You will get the most value if you need:
- Bulk orders & repeat purchases
- Consistent quality & on-time delivery
- OEM/ODM customization (length, material, precision：C,H,P,SP,UP)
- Stable technical support from an experienced linear guide manufacturer
- Competitive factory-direct pricing
DLY Linear Guide Product Categories
Large Stock Available for These Three Linear Guide Rail Types – B2B Buyers Welcome to Inquire
export@dlybearing.com
Detailed Specifications & Parameters
Below are the Specifications & Parameters of our hot-selling 15mm width linear guide series. We also offer 20mm, 25mm, 30mm, 35mm, 45mm, 55mm and 65mm sizes
please contact our team for detailed parameters and drawings of other dimensions.
HD series Heavy Load Linear Guide Rails-HDH15CA
HD series
H:Square Type
C:Heavy Load
A:Mounting From Top
- Rail Width (mm):15
- Rail Height (mm):15
- Maximum rail length (mm):4000
- Pitch (P)(mm):60
- Distance to End （Es)(mm):20
- Material:S55C
- Block Length*Width*Height(mm):61.4*34*23.7
- Overall Height（mm）:28
- Bearing Steel Ball Diameter(mm):3.175
- Ball Recirculator Material:PA6
- Basic dynamic load rating C(kN):14.7
- Basic Static Load Rating C₀(kN):23.47
- Rail Net Weight (kg):1.45kg/m
- Block Net Weight (kg):0.18
- Accuracy:C,H,P,SP,UP
ED Series – Low Profile Linear Guide Rails-EDH15SA
ED series
H:Square Type
S: Medium Load
A:Mounting From Top
- Rail Width (mm):15
- Rail Height (mm):12.5
- Maximum rail length (mm):4000
- Pitch (P)(mm):60
- Distance to End （Es)(mm):20
- Material:S55C
- Block Length*Width*Height(mm):40.1*34*19.5
- Overall Height（mm）:24
- Bearing Steel Ball Diameter(mm):/
- Ball Recirculator Material:PA6
- Basic dynamic load rating C(kN):5.35
- Basic Static Load Rating C₀(kN):9.4
- Rail Net Weight (kg):1.25kg/m
- Block Net Weight (kg):0.09
- Accuracy:C,H,P,SP,UP
RD Series – Roller Type Linear Guide Rails-RDH15CA
RD series
H:Square Type
C:Heavy Load
A:Mounting From Top
- Rail Width (mm):15
- Rail Height (mm):16.5
- Maximum rail length (mm):4000
- Pitch (P)(mm):30
- Distance to End （Es)(mm):20
- Material:S55C
- Block Length*Width*Height(mm):68*34*24
- Overall Height（mm）:28
- Bearing Steel Ball Diameter(mm):/
- Ball Recirculator Material:PA66
- Basic dynamic load rating C(kN):11.3
- Basic Static Load Rating C₀(kN):24
- Rail Net Weight (kg):1.8kg/m
- Block Net Weight (kg):0.2
- Accuracy:H,P,SP,UP
Product Features & Competitive Advantages
HD series Heavy Load Type Linear Guide Rails
HD series linear guideways are designed with load capacity and rigidity higher than other similar products withcircular-arc groove and structure optimization. it features equal load ratings in the radial, reverse radial and lateral directions, and self-aligning to absorb installation-error.
Application:
Grinding, milling, and drilling machine, lathe, machine center
Features:
1.Self-aligning capability
2.Interchangeability
3.High rigidity in all four directions
ED Series – Low Profile Type Linear Guide Rails
The design of the ED series offers a low profile, high load capacity, and high rigidity. lt also features an equal loadrating in all four directions and self-aligning capability to absorb installation-error, allowing for higher accuracies.Additionally, the lower assembly height and the shorter length make the ED series more suitable for high-speed automation machines and applications where space is limited.The retainer is designed to hold the balls in the block even when it is removed from the rail.
Application:
Automatic equipment, high speed transfer device, semiconductorequipment, wood cutting machine, precision measure equipment
Features:
High rigidity, high load capacity, four-directional load characteristics, and self-aligning function.
RD Series – Roller Type Linear Guideway
RD series features a roller as the roling element instead of steel balls. The roller series offers super high rigidity and very high load capacities. The RD series is designed with a 45-degree angle of contact. lasticdeformation of the linear contact surface, during load, is greatly reduced there by offering greater rigidity and higherload capacities in all 4 load directions.The RD series linear quideway offers high performance for high-precision manufacturing and achieving longer service life.
Application:
CNC machining centers, heavy duty cutting machines, CNC grinding machines, injection molding machines, electric discharge machines, wire cutting machines, plano millers
Features:
Roller-type rolling element design (replacing steel balls)
Ultra-high rigidity structure
Ultra-heavy load capacity
Equal rigidity in four directions
Equal load capacity in four directions
Key Features of DLY Linear Guideway
High Rigidity
Built for excellent load capacity and structural stability, ideal for high-precision, heavy-duty applications.
01
Compatible with Taiwan Brand Dimensions
Designed according to industry-standard mounting dimensions, compatible with many Taiwan brand models for easy replacement.
02
Cost-Effective Alternative
Provides reliable performance comparable to major brands while offering a more competitive price for distributors and OEM buyers.
03
Large Inventory & Fast Delivery
Common models are kept in stock, enabling fast shipment and reliable supply for bulk orders and urgent replacement needs.
04
DLY Linear Guideway
DLY linear guideways feature our own patented exterior design and innovative structure, including technologies like “a roller linear guide rail that is easy to disassemble and assemble.”
Scroll down to discover more about the advantages of DLY linear guideways.
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![Heavy Load Linear Guide]()
Heavy Load Linear GuideHeavy load linear guide is a high load mechanical transmission device, mainly used to support and accurately guide moving parts to perform reciprocating linear motion along a predetermined -
![RD Square Guideway]()
RD Square GuidewayThe RD Square Guideway is a roller linear guide, available in two types: non-interchangeable and interchangeable. Both types share the same dimensions, with the main difference being that in the -
![HD Square Guideway]()
HD Square GuidewayHD Square Guideway belongs to the one type of linear guide rail. HD usually represents a product series or a specific performance mark, and is composed of guide rail, slider, ball and retainer. The -
![ED Square Guideway]()
ED Square GuidewayThe ED Square Guideway is a low-profile linear guide with a wide block design, featuring low center height and high rigidity. Equivalent to HIWIN’s EG series, it is ideal for applications requiring -
![Block 25 Linear Guide]()
Block 25 Linear GuideHigh Precision Block 25 Linear Guide Rail & Carriage Assembly1.Block 25 Linear Guide -
![20mm Linear Guide Rail]()
20mm Linear Guide RailA 20mm linear guide rail is a precision linear motion component with a 20mm-wide rail profile, designed to provide smooth, stable, and high-load linear movement in CNC machines and industrial -
![Precision Guide Rails]()
Precision Guide RailsDLY Precision Guide Rails are available in P, SP, and UP accuracy grades, delivering high positioning precision, stable motion, and reliable performance for demanding CNC and industrial automation -
![CNC Linear Rail]()
CNC Linear Rail1.The CNC Linear Rail is a high-precision linear motion solution designed for a wide range of CNC machines, including milling machines, routers, and machining centers. Engineered for smooth, -
![Roller Linear Guide Rail]()
Roller Linear Guide RailRoller Linear Guide Rail is a heavy-duty linear motion system using roller elements to achieve higher load capacity, superior rigidity, and greater durability than ball-type guide rails.DLY is a -
![Heavy Duty Linear Guide Rails]()
Heavy Duty Linear Guide RailsDLY heavy-duty linear guide rails are designed for machines that demand high load capacity, high rigidity, and stable motion under continuous industrial duty cycles.They are widely used in CNC -
![High Precision Linear Rails]()
High Precision Linear RailsDLY High Precision Linear Rails are available in a full range of accuracy grades, including C, H, P, UP, and SP, enabling us to meet different positioning, repeatability, and motion stability -
![Roller Type Linear Guideway]()
Roller Type Linear GuidewayRoller Type Linear Guideway uses cylindrical rollers instead of balls, giving the system higher rigidity, higher load capacity, and more stable motion. It is ideal for heavy-duty CNC machines,
Structure Diagram of Linear Guideways
Construction-of HD Square Guideway
Construction-of ED Square Guideway
Construction-of RD Square Guideway
Detailed Classification of DLY Linear Guideways
Linear Guideway Classification by Structural Type
Types Of Linear Guides
ball guide rail
Ball guide rails use balls as rolling elements, providing low friction, smooth motion, and high precision. They are widely used in CNC machines, automation lines, and robotics.
roller type linear guideway
Roller type linear guideways use rollers instead of balls, offering higher load capacity, suitable for heavy-duty and impact-heavy applications.
Slide Linear Guideway
Slide linear guideways operate mainly by sliding friction, with a simple structure and low cost. However, they have higher friction, lower precision, and speed compared to rolling types.
Linear Guideway Classification by Rail Shape
Types Of Linear Motion Guideways
Square Rail
Square rails have a rectangular cross-section, easy to install and evenly distribute load, making them the most common type in industry.
Round Rail
Round rails are cylindrical, compact in structure, easy to install, and suitable for space-limited, light-load applications such as small machinery and precision instruments.
Linear Guideway Classification by linear guide slider
Types Of Linear Slides
Flange Linear Guide Block
A flange linear guide block features a widened mounting base with side-mounted holes, offering excellent installation stability and higher lateral load capacity. Ideal for machines requiring strong rigidity and secure fastening.
Square linear guide block
A square linear guide block features a compact, non-flanged design that saves space while maintaining smooth, precise motion. Ideal for automation systems, compact machinery, and applications with limited installation space.
Low-Profile linear guide block
A low-profile linear guide block features a reduced overall height and weight, helping lower the machine’s center of gravity. It offers smooth motion in compact or high-speed applications where space and stability are critical.
Roller linear guide block
A roller linear guide block uses cylindrical rollers instead of balls, delivering superior rigidity, higher load capacity, and excellent vibration resistance. Ideal for CNC machines, machining centers, and heavy-duty industrial equipment.
Linear Guideway Classification By Accuracy Grade
Precision Guide Rails
Linear guideways are classified into five accuracy grades: C, H, P, SP, and UP, to meet different precision requirements.
At DLY, we can provide linear guide blocks in any of these accuracy grades according to customer needs. All blocks are tested using DLY’s in-house precision measurement instruments, ensuring reliable performance and high positional accuracy for your machinery.
Precision Guide Rails: Selecting the Right Accuracy Grade
Material of DLY Linear Guideways
Types Of Linear Rails
DLY linear guideways are commonly made from high-quality S55C carbon steel, providing excellent hardness, wear resistance, and long service life for a wide range of industrial applications.
In addition to the standard carbon steel, DLY can also customize guideways using other materials to meet specific environmental or operational requirements.
This flexibility ensures that DLY linear guideways can be tailored to any precision, load, or environmental need, offering reliable performance across various industries.
The Principles of Selecting Linear Guideways
- Type of equipment
- Space limitations
- Accuracy
- Stiffness
- Travel length
- Magnitude and direction of loads
- Moving speed, acceleration
- Duty cycle
- Service life
- Environment
- HD series - Grinding, milling, and drilling machine, lathe, machine center
- ED series -Automatic equipment, high speed transfer device, semiconductor equipment, wood cutting machine, precision measure equipment
- MD series -Miniature device,semiconductor equipment, medical equipment
- RD series -CNC machining centers, heavy duty cutting machines, CNC grinding machines, injection molding machines, electric discharge machines, wire cutting machines, plano millers
Classes : C, H, P, SP, UP depends on the accuracy of equipment
Dynamic load condition
If accompanied with a ball screw, the size should be similar to the diameter of ball screw.
Make reference to load calculation examples, and calculate the max load.
Be sure that the static safety factor of selected guideway is larger than the rated static safety factor
Depends on the stiffness requirement and accuracy of mounting surface
Calculate the deformation by using the table of stiffness values, choosing heavier preload and larger size linear guideways to enhance the stiffness
Calculate the life time requirement by using the moving speed and frequency.
Make reference to the life calculation example
Grease supplied by grease nipple
Oil supplied by piping joint
The lifespan of the Linear Guideway
The acting load will affect the nominal life of a linear guideway. Based on the selected basic dynamic rated load and the actual load. The nominal life of ball type and roller type linear guideway can be calculated like:
If the environmental factors are taken into consideration, the nominal life is influenced greatly by the motion conditions, the hardness of the raceway, and the temperature of the linear guideway. The relationship between these factors is like:
Nominal Life Calculation for Linear Guideway
How to Assembly the Linear Guideway
Do not remove blocks from rails when assembling the guideways in machines as far as possible. Please use block inserts if it is necessary to remove/ mount block from/ onto rail.
Please do not randomly mix block units and rails for non interchangeable type to avoid any installation problem.
To ensure the straightness of rail, please tighten the mounting bolts sequentially with a torque wrench to the specified torque
Linear Guideway Usage Instructions
Lubricate the blocks after assembling the guideways in machines, Use a lithium soap-base grease or oil.
The guideways are packaged with anti-corrosion oil before delivery. lf the rails were cleaned before installation remember to lubricate the rails after assembling the guideways in machine.Please confirm the compatibility between lubricant & anti rust rail
The blocks are composed of various plastic parts, please avoid prolonged exposure of these parts with any organic solvent when cleaning the blocks to prevent possible damage.
Try to avoid any foreign objects from getting into the block as this could result in damage to the product.
Please do not disassemble the parts, the incautious actions of disassembly may bring foreign objects into the block and diminish the precision of the guideways or cause possible damage.
When handling the guideways please hold them horizontally. lmproper handling can cause the blocks to fall of the rail.
Please avoid the inappropriate falling or clash on the blocks, which will damage the function of guideways
For special application conditions, please apply the appropriate surface treatment or refer to the Linear Guideway Technical Information catalog for more detailed instructions.
Precision in Every Rail — DLY Linear Guideway Straightening
At DLY, we take precision seriously. Every linear guide undergoes a careful straightening process to ensure maximum accuracy and smooth operation.
This rigorous quality control guarantees that our linear guides deliver reliable performance and long-lasting durability for all industrial applications.
Application Fields of Linear Guideways
Our linear guides are widely used in various industries around the world, providing stable and reliable linear movement solutions for global customers.
CNC Machine Tools
Textile Machinery
Industrial Automation Equipment
Semiconductor
Medical Equipment
Packaging and Printing Machinery
3D Printers & Laser Equipment
Automotive Manufacturing Lines
One-Stop Linear Guide Manufacturer-DLY
Precision Linear Guideway Solutions from a Trusted Manufacturer-DLY
Zhejiang DLY Automation Manufacturing Co., Ltd. has over 20+ years of experience in manufacturing linear guideway. As an emerging high-tech enterprise, it integrates R&D, production, sales, and service. The company covers an area of over 30,000 square meters and is staffed with a team of experienced professionals in mechanical automation design, manufacturing, inspection, and R&D.
To ensure world-class precision and quality, DLY has introduced a complete set of advanced production lines from around the globe, including high-precision cold rolling machines, CNC linear guideway grinders, CNC slider grinders, heat treatment machines, CNC precision thread grinding centers, turn-mill compound machining centers, lead measuring instruments, high-precision projectors, contour measuring systems, and vision measuring systems.
Years Experience
Active Members
Square Meters
Patents
Honor and qualification
Our products fully comply with the following international standards, ensuring that they can be sold and used in global markets without barriers:
CE Certification/RoHS Certification/ISO 9001:2015 Quality Management System Certification
iSO 9001
ISO 14001
ISO-45001
Invention Patent
Invention Patent
Why Choose DLY as Your Linear Guideways Partner?
From design to delivery, DLY provides reliable linear motion solutions with speed, precision, and full support.
In-House Design Team
Our experienced R&D and engineering team supports your custom needs with tailored CAD drawings, fast prototyping, and optimized design solutions.
On-Site Manufacturing Team
We own our factory and operate a professional in-house production team, ensuring strict quality control and flexible production scheduling.
Fast Delivery Time
With a well-organized production line and large inventory of standard components, we ensure short lead times and on-time delivery — even for bulk orders.
Strong After-Sales Support
Our responsive technical and service team is available 24/7, ready to assist with installation, troubleshooting, and long-term maintenance.
FAQ
Company Reliability
Q: How long has DLY been in the industry, and do you have your own factory?
A: DLY has over 20 years of experience in linear guideways and ball screws, with its own factory in Zhejiang, China. We handle production, R&D, and quality control in-house.
Q: Can DLY handle large volume orders?
A: Yes. Our production capacity covers high-volume orders for both standard and custom linear guideways, ensuring timely delivery.
Q: Does DLY have quality certifications?
A: DLY is ISO9001 certified, holds multiple patents, and adheres to strict quality standards to ensure product reliability.
Q: What after-sales support does DLY provide?
A: We provide one-year warranty, technical guidance, and dedicated support to help customers with installation, maintenance, and troubleshooting.
Product Accuracy & Performance
Q: What accuracy grades are available?
A: DLY linear guideways are available in all grades: C, H, P, SP, and UP, and each block is tested with our in-house precision instruments to ensure reliable performance.
Q: What types of linear guide blocks are offered?
A: We provide four main types:
Flange Type – Wide-base for high stability
Square Type – Compact for space-limited installations
Low-Profile Type – Lightweight and low height
Roller Type – Heavy-duty with maximum rigidity
Q: What materials are used for DLY linear guideways?
A: Standard material is high-quality S55C carbon steel.
Q: Are DLY linear guideways compatible with other brands?
A: Yes. Our linear guideways can be customized to match or replace major brands such as HIWIN
Ordering, Price & Delivery
Q: How can I request a quote?
A: You can click the “Request Custom Solution” button, send an inquiry via email:export@dlybearing.com, or contact our engineers directly.
Q: What is the typical lead time for delivery?
A: Standard products are shipped quickly. Custom or non-standard guideways depend on order specifications, but we always strive to meet your schedule.
Q: Are there bulk discounts?
A: Yes. DLY offers competitive pricing for large volume orders and long-term cooperation.
With over 20 years of experience in precision motion components, DLY is a leading manufacturer and supplier of high-quality linear guideways in China. Our advanced production facilities, strict quality control, and innovative R&D capabilities ensure stable performance, smooth motion, and long service life. Whether for CNC machines, automation systems, or industrial equipment, DLY provides reliable linear guide solutions tailored to your needs.
Our address
No. 12, Baixian Road, Shuige Industrial Zone, Lishui, Zhejiang, China
Phone Number
+8618957070963
+86-578-2959520
export@dlybearing.com
Zhejiang DLY Automation Manufacturing Co., Ltd. is well-known as one of the leading linear guideway manufacturers and suppliers in China. Please feel free to buy high quality linear guideway made in China here and get pricelist from our factory. For customized service and OEM/ODM service, contact us now.
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