Linear Guide Blocks

Linear guide blocks typically consist of a block made of metal or plastic that is mounted on a rail. The block contains a series of rolling elements such as balls, rollers, or needles that ride along the rail to provide smooth and precise linear motion. Linear guide blocks are important components of linear motion systems. 

The choice of linear block depends on factors such as load capacity, accuracy, speed, and environmental conditions. Some popular types of linear guide blocks include ball guides, roller guides, needle guides, and slide guides.

Ball guides use recirculating balls to provide smooth and precise linear motion. Roller guides use cylindrical rollers to support heavy loads and provide high rigidity. Needle guides use small, cylindrical needles that are suitable for high-speed and low-load applications. Slide guides use flat sliding surfaces to provide smooth and precise linear motion.

Here In this page, we introduce series of Linear Guideways, you will see data sheet, production pictures,vedios of test as follows:

 Categories of Linear Guide Blocks:

Series	HGH High Assembly	HGW High Assembly	EGH Low Assembly	EGW Low Assembly	MGN Miniature	MGW Miniature
Block	H Square Type	W Flange Type	H Square Type	W Flange Type	N Narraow Guide	W Wide Guide
Size	15,20,25,30,35,45,55,65	15,20,25,30,35,45,55,65	15,20,25,30,35	15,20,25,30,35	7,9,12,15	7,9,12,15
Pictures
Remark	Heavy Load Ball Type	Heavy Load Ball Type	Low Profile Ball Type	Low Profile Ball Type	Miniature Type	Miniature Type

Model Selction Guide, Drawing and Data Sheet of Linear Guideways/Linear Guide Blocks.

HGH High Assembly and HGW High Assembly: Heavy Load Ball Type

EGH Low Assembly and EGW Low Assembly: Low Profile Ball Type

MGN Miniature and MGW Miniature: Narrow Guide Type and Wide Guide Type

FAQs about Linear Guide Blocks

What is the difference between a linear guide block and a linear bearing block?

A linear guide block runs on a profiled rail with recirculating balls contacting four raceways (2D contact). A linear bearing block runs on a round shaft with balls contacting only two points. Guide blocks handle higher moment loads (pitch, yaw, roll) and offer greater rigidity. Bearing blocks are lower cost but accept less misalignment. For CNC machines or gantries, use guide blocks. For 3D printers or light duty, bearing blocks may suffice.

How do I choose between flange type and square type linear guide blocks?

Flange type (F) has a wider mounting surface with through-holes, ideal for top mounting on thin plates. Square type (H) has a narrower body with threaded holes, suited for side mounting or compact designs. Flange blocks offer higher mounting rigidity but require more width space. Square blocks allow easier access to bolts from below. For moving gantries with limited envelope, choose square type. For stationary tables with generous space, flange type is easier to install.

How do I preload linear guide blocks and what are the effects?

Preload eliminates internal clearance. Options: Z0 (no preload, some clearance), Z1 (light preload), Z2 (medium), Z3 (heavy). Preload increases stiffness but raises friction (2–3× higher) and reduces maximum speed. For horizontal axes with light loads, Z1 is typical. For vertical axes or high vibration, use Z2. Heavy preload (Z3) is only for high-precision milling spindles. Preload is set at the factory—field adjustment requires replacing balls. Sign of excessive preload: block moves stiffly by hand or heats up rapidly.

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