Linear Guide Blocks for Rail Matching and Replacement
DLY supplies linear guide blocks for profile linear guide rail systems, including flange type, square type, low-profile type, roller type and miniature guide blocks. They are used to support smooth, stable and accurate linear motion in CNC machines, automation equipment, linear modules, measuring devices and industrial machinery.
Linear blocks can be supplied separately to match existing rails, or together with DLY linear guide rails as a complete guideway set. Common options include HD, ED, RD and MGN / MD series, with multiple accuracy grades available for different application requirements.The HD series is dimensionally compatible with HG series, the ED series corresponds to EG series, and the RD roller type series is suitable for higher rigidity and heavy load applications.
Find Linear Blocks by Series, Size and Rail Compatibility
Below you can find DLY linear block products by series, block shape, accuracy grade, rail size and application. For replacement orders, please send the rail model, block model, sample photo or drawing so that DLY can help confirm compatibility before quotation.
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![Flange Linear Rail Block]()
Flange Linear Rail Block1.DLY Flange Linear Rail Block2.Available in HDW, EDW & RDW series3.High rigidity, smooth motion, interchangeable design4.Suitable for CNC machines & automation equipment -
![Square Linear Rail Block]()
Square Linear Rail BlockSquare Linear Rail Block is a standard-profile linear guide block designed for applications requiring high rigidity, balanced load capacity, and stable motion performance. -
![Linear Guide Block]()
Linear Guide Block1.Factory-direct linear guide block with consistent quality and fast delivery.2.OEM/ODM linear guide block manufactured by an experienced motion component supplier. -
![Linear Ball Bearing Slide Block]()
Linear Ball Bearing Slide BlockLinear ball bearing slider is a kind of high precision, low friction linear motion parts, widely used in automation equipment, precision instruments, 3D printers and other fields. Compared with -
![Mgn12 Block]()
Mgn12 BlockMGN12 slider is a miniature linear guide slider. MGN12 slider has the characteristics of small size, light weight, diverse materials, strong load capacity, and interchangeability, and is widely used -
![ED Sliding Block]()
ED Sliding BlockED Sliding Block – Low-Profile Linear Guide Sliding Block1.Low-profile design equivalent to EG series linear guide2.4-row circular arc groove with 4-direction equal load capacity3.High rigidity, high -
![HD Sliding Block]()
HD Sliding BlockHD Sliding Block for HD Square Guideway.HD slider usually refers to the high precision sliding parts used in linear guide rail and precision mechanical system. HD slider needs to have the -
![RD Sliding Block]()
RD Sliding BlockRD series is divided into non-interchangeable and interchangeable linear slide rails. The specifications and sizes of the two are the same. The main difference is that the interchangeable slide block -
![Mgn12c Block]()
Mgn12c BlockMGN12C slider, MDN and MDW series linear guides are miniature guides, whose width, height and length are smaller than ordinary series. MDN12C slider is widely used in small precision machines, such -
![Mgn12h Block]()
Mgn12h BlockMGN12H Linear Guide BlockLong block for MGN12 rail12mm rail widthHigh rigidity long type4-point contact designLow friction, high precision3D printer / CNC / automation -
![Mgn9h Carriage]()
Mgn9h CarriageMGN9H slider is the one miniature linear guide slider introduced by DLY. MGN9H is an ultra-compact linear guide rail in the MGN series, with a width of only 9mm. The suffix H indicates a heavy-duty
How to Choose the Right Linear Guide Block
Choosing a linear guide block is different from choosing a complete linear guideway set. You need to confirm the rail series, rail width, block shape, mounting hole pattern, block length, preload, accuracy grade and whether the block is used for replacement or a new rail-and-block assembly.
DLY can help buyers check block compatibility according to the existing rail model, block model, sample photo, drawing or basic dimensions.
Rail Compatibility
Check whether the block matches the rail series, rail width, raceway structure and replacement requirement.
Block Shape
Choose flange type, square type, low-profile type, roller type or miniature block according to installation space.
Mounting Hole Pattern
Confirm block mounting holes, block height and fixing direction before replacement or new machine assembly.
Preload and Accuracy
Preload and accuracy grade affect clearance, rigidity, running smoothness and positioning performance.
Why Linear Guide Blocks Matter in Motion Systems
A linear guide block is the moving component that works with the guide rail. It affects load support, friction, positioning accuracy, running smoothness and service life.
Structure of a Linear Guide Block
A linear guide block normally includes the block body, end caps, seals, rolling elements, retainer, grease nipple and lubrication path. These structures affect circulation, lubrication, dust protection and running performance.
Common Linear Guide Block Types
Different block shapes are used for different mounting directions, load conditions and machine structures. DLY can help buyers confirm whether a flange, square, long, short, low-profile, roller or miniature block is more suitable.
Main DLY Linear Guide Block Options
DLY supplies HD, ED, RD and miniature linear guide blocks. Buyers can choose block-only replacement or matched rail-and-block sets according to equipment requirements.
DLY Linear Guide Block Comparison
Understand the main differences between DLY HD, ED and RD linear guide blocks before model confirmation.
| Block Series | Rolling Type | Ball Recirculator Material | Accuracy Grades | Buyer Notes |
|---|---|---|---|---|
| HD Linear Guide Blocks | Ball type | PA6 | C, H, P, SP, UP | Suitable for heavy load, high rigidity and general industrial guideway systems. |
| ED Linear Guide Blocks | Ball type | PA6 | C, H, P, SP, UP | Suitable for compact machines, lower installation height and high-speed automation equipment. |
| RD Linear Guide Blocks | Roller type | PA66 | H, P, SP, UP | Suitable for higher rigidity, heavy load and more demanding motion systems. |
Linear Guide Block Replacement Support
DLY can help buyers find suitable replacement linear guide blocks according to existing rail models, block models, photos or measured dimensions.
If a single replacement block is not suitable for the original rail, DLY can also supply matched rail-and-block sets for better installation and running stability.
Old Block Model
Send the block model marked on the product body if available.
Rail Model
The rail model helps confirm width, raceway structure and block compatibility.
Sample Photo
A clear photo of the old block and rail can help reduce matching mistakes.
Mounting Dimensions
Mounting hole distance, block height and rail width are useful for replacement checking.
Rail and Block Matching for Linear Guideway Sets
DLY can supply matched linear guide rails and blocks for new machine assembly, equipment maintenance and replacement projects. Rail series, rail width, accuracy grade, preload and block type can be confirmed according to buyer drawings, existing models or machine requirements.
For complete linear guideway sets, DLY supports model confirmation, rail cutting and matched block supply.
Accuracy, Preload and Running Smoothness
DLY supports C, H, P, SP and UP accuracy grade options for different linear motion applications. Accuracy grade, preload, rail matching, lubrication and surface condition all affect the running smoothness and service life of a linear guide block.
Before shipment, guide blocks are checked for tolerance, surface condition and smooth movement to support easier installation and more stable machine operation.
Linear Guide Block Workshop and Supply Support
DLY provides linear guide block manufacturing, inspection and model matching support for overseas buyers. Guide blocks can be supplied with standard black finish or DLY patented color finish according to product series and order requirements.
DLY also supports block-only replacement, matched rail-and-block sets, batch supply and export packaging for long-term purchasing needs.
Linear Block Applications
Linear guide blocks are used in equipment that requires smooth travel, stable support and repeatable positioning. This page focuses on block selection, replacement and matching.
CNC Machines
For feed axes, machine table movement and precision positioning systems.
Automation Equipment
For repeated linear movement, transfer, lifting and positioning structures.
Linear Modules
Used with guide rails, ball screws, supports and motors to build compact linear motion units.
Woodworking Machinery
For cutting, engraving, feeding and adjustable mechanical structures.
Packaging Machinery
For pushing, lifting, feeding, positioning and repeated adjustment movement.
Replacement and Maintenance
For replacing worn or damaged blocks on existing linear guide rail systems.
Related Linear Motion Components
Linear guide blocks are often used together with guide rails, ball screws, linear modules and other motion components. DLY can help buyers confirm related parts together.
Step-by-Step Linear Block Ordering Guide
To help DLY confirm your linear block quotation faster, please provide the rail model, block model, sample photo, drawing or measured dimensions when available.
Send Rail or Block Model
Send the existing rail model, block model, drawing or sample photo.
Confirm Block Details
Confirm rail width, block shape, mounting hole size, block length and quantity.
Check Accuracy and Preload
Confirm accuracy grade, preload, clearance and running smoothness requirement.
Decide Block Only or Set
Check whether block-only replacement is suitable or a matched rail-and-block set is needed.
Receive Quotation
DLY provides quotation, lead time and packaging suggestion after model confirmation.
FAQ About Linear Guide Blocks
Can I buy linear guide blocks separately?
Yes. DLY can supply linear guide blocks separately for replacement or together with matched guide rails as a complete guideway set.
How do I know which block matches my rail?
Please send the rail model, block model, rail width, sample photo or measured dimensions. DLY can help check possible matching options.
What is the difference between flange and square linear blocks?
Flange blocks have a wider mounting surface and are suitable for stronger fastening. Square blocks are more compact and suitable for limited installation width.
Can DLY help replace an old linear block?
Yes. You can send the old block model, rail model, sample photo or mounting dimensions. DLY will help check whether a replacement block or matched set is more suitable.
What affects the running smoothness of a linear block?
Rail matching, accuracy grade, preload, clearance, lubrication, surface condition and installation alignment may all affect running smoothness.
Can I order rails and blocks together?
Yes. DLY can supply linear guide rails, linear guide blocks and matched rail-and-block assemblies according to your order requirements.
How does DLY pack linear blocks for export?
DLY arranges suitable packaging according to product type, quantity and transport method to reduce scratches, contamination and transport damage.
Need Linear Guide Block Price or Replacement Support?
Send DLY your rail model, block model, sample photo, drawing or mounting dimensions. Our team can help confirm suitable linear guide block options before quotation.
Zhejiang DLY Automation Manufacturing Co., Ltd. is well-known as one of the leading linear block manufacturers and suppliers in China. Please feel free to buy high quality linear block made in China here and get pricelist from our factory. For customized service and OEM/ODM service, contact us now.
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