DLY Linear guide vs HIWIN Linear guide

When selecting linear guides, many buyers compare the HIWIN HG, EG, MG, and RG series with alternative brands to reduce costs while maintaining reliable performance.

This guide provides a detailed comparison of key assembly dimensions-such as rail height and block width-between HIWIN HG, EG, MG, RG series and DLY HD, ED, MD, RD series linear guides. It is designed to help you evaluate whether DLY linear guides can serve as a reliable and fully interchangeable alternative without requiring design modifications.

All DLY series are developed based on standardized mounting dimensions, ensuring compatibility with mainstream linear guide systems used in CNC machinery and industrial automation.

DLY Product advantages

Cost-effectiveness：

DLY guide rails are generally more competitively priced without compromising quality or performance. Compared with HIWIN, DLY offers a higher cost-performance ratio, providing excellent value for precision linear motion solutions.

Customization capability：

DLY guide rails also feature flexible customization capabilities, allowing products to be tailored to meet the specific needs of each customer. This adaptability ensures that DLY can support a wide range of applications, from standard machinery to specialized equipment.

Customer support：

In addition, DLY is committed to outstanding customer service and support. Customers can rely on timely technical assistance, responsive after-sales service, and practical solutions to ensure smooth operation and project success.

DLY and HIWIN model comparison table

Model	HIWIN		DLY		SIZE
	Heavy Load	Medium Load & Super Heavy Load	Heavy Load	Medium Load & Super Heavy Load	Combined height	Slider width
Flange type Heavy Load Ball Type Linear Guideway	HGW15CA	/	HDW15CA	/	24	47
	HGW20CA	HGW20HA	HDW20CA	HDW20HA	30	63
	HGW25CA	HGW25HA	HDW25CA	HDW25HA	36	70
	HGW30CA	HGW30HA	HDW30CA	HDW30HA	42	90
	HGW35CA	HGW35HA	HDW35CA	HDW35HA	48	100
	HGW45CA	HGW45HA	HDW45CA	HDW45HA	60	120
	HGW55CA	HGW55HA	HDW55CA	HDW55HA	70	140
	HGW65CA	HGW65HA	HDW65CA	HDW65HA	90	170
Square type Heavy Load Ball Type Linear Guideway	HGH15CA	/	HDH15CA	/	28	34
	HGH20CA	HGH20HA	HDH20CA	HDH20HA	30	44
	HGH25CA	HGH25HA	HDH25CA	HDH25HA	40	48
	HGH30CA	HGH30HA	HDH30CA	HDH30HA	45	60
	HGH35CA	HGH35HA	HDH35CA	HDH35HA	55	70
	HGH45CA	HGH45HA	HDH45CA	HDH45HA	70	86
	HGH55CA	HGH55HA	HDH55CA	HDH55HA	80	100
	HGH65CA	HGH65HA	HDH65CA	HDH65HA	90	126
Square type Low Profile Ball Type Linear Guideway	EGH15CA	EGH15SA	EDH15CA	EDH15SA	24	34
	EGH20CA	EGH20SA	EDH20CA	EDH20SA	28	42
	EGH25CA	EGH25SA	EDH25CA	EDH25SA	33	48
	EGH30CA	EGH30SA	EDH30CA	EDH30SA	42	60
Flange type Low Profile Ball Type Linear Guideway	EGW15CA	EGW15SA	EDW15CA	EDW15SA	24	52
	EGW20CA	EGW20SA	EDW20CA	EDW20SA	28	59
	EGW25CA	EGW25SA	EDW25CA	EDW25SA	33	73
	EGW30CA	EGW30SA	EDW30CA	EDW30SA	42	90
Micro locking type (standard rail)	MGN7C	MGN7H	MDN7C	MDN7H	8	17
	MGN9C	MGN9H	MDN9C	MDN9H	10	20
	MGN12C	MGN12H	MDN12C	MDN12H	13	27
	MGN15C	MGN15H	MDN15C	MDN15H	16	32
Micro locking type (wide rail)	MGW7C	MGW7H	MDW7C	MDW7H	9	25
	MGW9C	MGW9H	MDW9C	MDW9H	12	30
	MGW12C	MGW12H	MDW12C	MDW12H	14	40
	MGW15C	MGW15H	MDW15C	MDW15H	16	60
Square-Type Roller Linear Guide	RGH15CA	/	RDH15CA	/	28	34
	RGH20CA	RGH20HA	RDH20CA	RDH20HA	34	44
	RGH25CA	RGH25HA	RDH25CA	RDH25HA	40	48
	RGH30CA	RGH30HA	RDH30CA	RDH30HA	45	60
	RGH35CA	RGH35HA	RDH35CA	RDH35HA	55	70
	RGH45CA	RGH45HA	RDH45CA	RDH45HA	70	86
	RGH55CA	RGH65HA	RDH55CA	RDH55HA	80	100
	RGH65CA	RGH65HA	RDH65CA	RDH65HA	90	126
Flange-Type Roller Linear Guide	RGW15CC	/	RDW15CC	/	24	27
	RGW20CC	RGW20HC	RDW20CC	RDW20HC	30	63
	RGW25CA	RGW25HC	RDW25CA	RDW25HC	36	70
	RGW30CC	RGW30HC	RDW30CC	RDW30HC	42	90
	RGW35CC	RGW35HC	RDW35CC	RDW35HC	48	100
	RGW45CC	RGW45HC	RDW45CC	RDW45HC	60	120
	RGW55CC	RGW55HC	RDW55CC	RDW55HC	70	140
	RGW65CC	RGW65HC	RDW65CC	RDW65HC	90	170

RD Sliding Block — DLY RD Series Linear Guide Blocks

Product Introduction

HD Heavy Load Ball Type Linear Guideway

HD series linear guideways are designed with load CBpacity and rigidity higher tHBn other similar products withcircular-arc groove and structure optimization. it features equal load ratings in the radial, reverse radial and lateraldirections, and self-aligning to absorb installation-error.

ED Low Profile Ball Type Linear Guideway

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-speedautomation 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.

RD High Rigidity Roller Type Linear Guideway

RD series features a roller as the roling element instead of steel balls. The roller series offerssuper 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 thereby offering greater rigidity and higherload capacities in all 4 load directions.The RD series linear quideway offers high performance for high-precisionmanufacturing and achieving longer service life.

Application

HD Heavy Load Ball Type Linear Guideway:Grinding, milling, and drilling machine, lathe, machine center

ED Low Profile Ball Type Linear Guideway:Automatic equipment, high speed transfer device, semiconductorequipment, wood cutting machine, precision measure equipment

RD High Rigidity Roller Type Linear Guideway:CNC machining centers, heavy duty cutting machines, CNC grinding machines, injection molding machines, electric discharge machines, wire cutting machines, plano millers

Features

HD Heavy Load Ball Type Linear Guideway:

1.Self-aligning capability
2.Interchangeability
3.High rigidity in all four directions

ED Low Profile Ball Type Linear Guideway:

High rigidity, high load capacity, four-directional load characteristics, and self-aligning function.

RD High Rigidity Roller Type Linear Guideway:

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

Summary

DLY linear guideways offer high cost-performance, flexible customization, and full-cycle reliable support, providing dependable solutions for a wide range of machinery and automation applications. They meet high-precision requirements while delivering a worry-free user experience. Compared with other brands, choosing DLY means achieving the best balance of cost, performance, and service.

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