Linear Guide Carriage Block
Linear Guide Carriage Block for HD, ED and RD Linear Rail Systems
DLY linear guide carriage blocks are precision rolling blocks used together with square linear guide rails. They support smooth, stable and high-rigidity linear motion for CNC machines, automation equipment, laser machines, packaging machinery, measuring equipment and precision motion systems.
DLY HD, ED and RD series carriage blocks, including square blocks, flange blocks, low-profile blocks and roller-type blocks. Each series is designed for a different installation height, load requirement and machine structure.
Linear guide carriage blocks for HD, ED and RD linear guideway systems.
What Is a Linear Guide Carriage Block?
A linear guide carriage block is the moving block installed on a square linear guide rail. Steel balls or rollers circulate inside the block, allowing the carriage to move along the rail with low friction while carrying load from radial, reverse-radial and lateral directions.
Compared with ordinary round-shaft linear bearing blocks, a linear guide carriage block provides higher rigidity, better positioning stability and stronger moment load capacity. It is suitable for machine axes where accuracy, stiffness and repeatable linear motion are more important than simple sliding movement.
DLY Linear Guide Carriage Block Series
DLY provides several carriage block structures for different machine layouts.
| Series | Block Type | Main Feature | Suitable Applications |
|---|---|---|---|
| HDH | Standard square carriage block | Compact mounting structure with high rigidity | CNC machines, automation axes, laser equipment |
| HDW | Flange carriage block | Wider mounting surface for easier installation | Packaging machines, robotic equipment, handling systems |
| EDH | Low-profile square carriage block | Lower assembly height for compact equipment | Small automation, measuring equipment, limited-height axes |
| EDW | Low-profile flange carriage block | Compact height with a wider mounting base | Light automation, positioning platforms, compact machinery |
| RDH | Roller-type square carriage block | Higher rigidity and stronger load capacity | Machine tools, heavy-load axes, precision equipment |
| RDW | Roller-type flange carriage block | High load capacity with flange mounting | Heavy-duty automation, machine bases, high-rigidity guide systems |
Product Display
The product photos below present DLY linear guide carriage blocks in different sizes and mounting structures. For accurate model selection, please confirm the rail width, carriage type, preload grade, accuracy grade, and mounting dimensions before replacement or new equipment assembly.
Key Features of DLY Linear Guide Carriage Blocks
Four-Direction Load Capacity
The carriage block structure supports load from radial, reverse-radial and lateral directions, helping maintain stable movement in horizontal, vertical and side-mounted installations.
Preload for Higher Rigidity
Preload can help reduce clearance and improve rigidity when the equipment requires better positioning stability or higher resistance to vibration.
Smooth Ball or Roller Circulation
Different carriage block structures are available for smooth running, low friction and stable repeated motion along the linear guide rail.
Replacement Matching Support
For replacement projects, DLY can help check block model, rail width, mounting dimensions, preload and accuracy grade according to your old sample or drawing.
How to Choose the Right Linear Guide Carriage Block
1. Confirm the Rail Series
Check whether the rail belongs to HD, ED or RD series. Different series use different block structures and dimensions.
2. Choose Square or Flange Block
Square blocks are compact. Flange blocks provide a wider mounting surface and are easier to install on plates or machine bases.
3. Check Installation Height
ED series is suitable for low-profile equipment. HD and RD series are used when higher rigidity or load capacity is required.
4. Confirm Load and Moment Direction
For long overhangs, vertical axes or side-mounted rails, check dynamic load, static load and moment load requirements before model selection.
5. Confirm Accuracy and Preload
Accuracy grade and preload should be selected according to positioning accuracy, running smoothness and machine rigidity requirements.
6. Send Model or Drawing
For replacement, please provide model number, rail width, block length, mounting hole distance, accuracy grade and clear photos.
Linear Guide Carriage Block vs Linear Bearing Block
The original product name may be confused with ordinary linear bearing blocks. The table below clarifies the difference for buyers who are comparing square rail guide systems with round shaft systems.
| Item | Linear Guide Carriage Block | Linear Bearing Block |
|---|---|---|
| Matching Rail | Square linear guide rail | Round shaft or supported round shaft |
| Motion Structure | Ball or roller circulation inside the carriage block | Linear bushing installed inside an aluminum or steel housing |
| Rigidity | Higher rigidity and better positioning stability | Suitable for general sliding and light-to-medium motion |
| Load Direction | Radial, reverse-radial and lateral load directions | Mainly radial load on a round shaft |
| Typical Use | CNC machines, laser machines, automation axes, precision equipment | 3D printers, simple guide systems, light automation and round shaft assemblies |
Dimension Drawings and Specification Tables
Detailed dimensions should be confirmed according to the exact carriage block model. The following original DLY specification drawings are retained for model checking and engineering reference.
HDH-CA / HDH-HA Square Linear Guide Carriage Block
HDH square carriage block dimensions, load ratings and rail matching information.
HDW-CA / HDW-HA Flange Linear Guide Carriage Block
HDW flange carriage block with wider mounting surface for machine plates and linear motion assemblies.
HDW-CB / HDW-HB Flange Carriage Block
HDW-CB and HDW-HB specification table for flange mounting hole layout and load checking.
EDH-SA / EDH-CA Low-Profile Carriage Block
EDH low-profile square carriage block for compact equipment and limited-height installation spaces.
EDW-SA / EDW-CA Low-Profile Flange Carriage Block
EDW flange carriage block combines lower height with easier mounting on compact machine structures.
EDW-SB / EDW-CB Low-Profile Flange Carriage Block
EDW-SB and EDW-CB specification table for compact flange carriage block selection.
RDH-CA / RDH-HA Roller-Type Linear Guide Carriage Block
RDH roller-type carriage block for applications requiring higher rigidity and stronger load capacity.
Series Product Reference
For clearer model selection, DLY also provides separate ED, HD and RD sliding block pages. The images below are retained to show the main model ranges under each series.
ED Series Low-Profile Linear Guide Carriage Blocks
HD Series Heavy-Duty Linear Guide Carriage Blocks
RD Series Roller Linear Guide Carriage Blocks
Common Applications
Linear guide carriage blocks are used where a machine axis needs stable guidance, repeatable movement and higher rigidity than a round shaft system.
| Application | Why a Linear Guide Carriage Block Is Used | Recommended Focus |
|---|---|---|
| CNC Machines | Supports stable axis movement and cutting rigidity | Rigidity, preload, accuracy grade, moment load |
| Laser Machines | Provides smooth travel for repeated high-speed movement | Running smoothness, rail length, dust protection |
| Packaging Machinery | Suitable for frequent reciprocating linear motion | Service life, lubrication, installation space |
| Automation Equipment | Guides positioning, transfer and handling modules | Block type, rail width, accuracy and interchangeability |
| Precision Instruments | Helps maintain stable low-friction linear motion | Low noise, smoothness, compact structure |
Why Choose DLY Linear Guide Carriage Blocks?
Multiple Series Available
HD, ED and RD series carriage blocks support different needs for standard height, low-profile installation and higher-rigidity roller structures.
Square and Flange Types
DLY supplies square and flange carriage block structures to match different mounting plates, machine bases and installation layouts.
Rail and Block Matching
For replacement and new equipment projects, DLY can help check rail width, block size, hole distance, preload and accuracy requirements.
Complete Linear Motion Supply
DLY also supplies matching linear guide rails, ball screws, linear shafts, linear bearings and related motion components for automation systems.
Related Products
For more specific selection, you can also check the individual ED, HD and RD sliding block pages.
FAQ About Linear Guide Carriage Blocks
What is the difference between a linear guide carriage block and a linear guide rail?
The linear guide rail is the fixed rail installed on the machine base. The linear guide carriage block is the moving block that travels along the rail and carries the moving table, plate or machine component.
How do I choose between square and flange carriage blocks?
Square blocks are more compact and are often used where mounting space is limited. Flange blocks have a wider mounting surface and are easier to install on flat plates or machine bases.
What is the difference between HD and ED carriage blocks?
HD series is a standard-height linear guide carriage block series for general high-rigidity applications. ED series is a low-profile series for compact machines and limited-height structures.
When should I choose RD roller-type carriage blocks?
RD roller-type carriage blocks are suitable when the machine requires higher rigidity, stronger load capacity and better resistance to moment loads, such as heavy-duty precision equipment and machine tool axes.
Can I replace only the carriage block without replacing the rail?
It may be possible, but the rail series, block model, accuracy grade, preload and interchangeability must be confirmed first. For safer replacement, send the rail and block model or clear photos to DLY before ordering.
What information is needed for a quotation?
Please provide the carriage block model, rail width, block type, quantity, accuracy grade, preload requirement, rail length if needed, and application information.
Need Help Choosing a Linear Guide Carriage Block?
Send DLY your rail width, carriage block model, mounting dimensions, preload requirement, accuracy grade, quantity and application. Our team can help check a suitable HD, ED or RD linear guide carriage block before quotation.
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