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How to Choose CNC Linear Guides: The Universal Interchangeability Guide | TranzBrillix

2025-11-29

How to Choose CNC Linear Guides
The TranzBrillix Universal Guide

A CNC machine is only as accurate as its linear motion system. This guide helps you select the right TranzBrillix rails—engineered as the universal standard for interchangeability and precision.

Why CNC Linear Guides Matter

Choosing the right CNC linear guides has a direct impact on cutting quality, vibration, noise, and long-term reliability. When guides are properly sized and installed, you get:

Smoother Surface Finish: Eliminates chatter marks on aluminum, wood, or steel.
Higher Precision: Maintains positioning accuracy under heavy cutting loads.
Longer Tool Life: Stable motion reduces tool wear and breakage.

The Risk: Undersized or worn guides can cause "lost steps," inconsistent cuts, and premature wear on ball screws.

1 Identify Your CNC Machine Type

The first step is defining the application. TranzBrillix offers two distinct series based on your machine structure:

HG Series (Heavy Load)

Best For: CNC Routers, Machining Centers, Lathes, Grinding Machines.

Designed with a 45° contact angle for high rigidity in all 4 load directions (Up/Down/Left/Right).

EG Series (Low Profile)

Best For: 3D Printers, High-speed Automation, Pick & Place Robots.

Compact design with a lower center of gravity for high-speed, lightweight motion.

2 Choose Rail Size by Load Rating

Don't guess the size. Use TranzBrillix Engineering Data (ISO Standard) to match load capacity. Here is a quick reference:

Size	Dynamic Load (C)	Recommended Application
15 mm	11.38 kN	Desktop CNC, Light Engravers
20 mm	17.75 kN	Standard CNC Routers (Most Popular)
25 mm	26.48 kN	Heavy Gantries, Plasma Tables
30 mm+	38.74 kN+	Steel Machining Centers

3 Understand Accuracy & Preload

CNC machines need a balance between smoothness and stiffness. We supply the optimal configuration:

Accuracy Grade (H)

TranzBrillix supplies High (H) Grade as standard. This ensures tight tolerances on rail straightness, essential for precision milling.

Preload (Z1 Recommended)

For CNC Routers, we recommend Z1 (Light Preload). The balls fit tighter to eliminate play, increasing rigidity and preventing vibration marks.

4 Universal Interchangeability Guide

TranzBrillix guides are engineered to strictly follow ISO/JIS dimensional standards. Whether you have a Japanese, German, or Taiwanese machine, you can switch to TranzBrillix immediately without re-machining.

Origin	Brand	Heavy Load Series	Low Profile Series	TranzBrillix Fit
Taiwan, CN	HIWIN	HG Series	EG Series	100% Match
Taiwan, CN	PMI (Silver)	MSA Series	MSB Series	100% Match
Taiwan, CN	TBI Motion	TRH Series	TRS Series	100% Match
Taiwan, CN	ABBA	BRH / BRS	BR (Low)	100% Match
Taiwan, CN	STAF	BGX Series	BGS Series	100% Match
Taiwan, CN	CPC (Chieftek)	ARC / HRC	ERC Series	100% Match
Japan	THK	HSR Series	SSR / SHS	100% Match
Japan	IKO	MH / LWH	--	100% Match
Japan	NSK	LH / NH	LS / NS	100% Match
Germany	Bosch Rexroth	FNS / FLS	--	Compatible*
Germany	INA (Schaeffler)	KUE / KUVE	--	Compatible*
Sweden	Ewellix (SKF)	LLT Series	--	Compatible

* Note for European Brands: While rail width and block height are standard, please verify the rail mounting hole pitch (P) before ordering, as some legacy DIN standards may differ from ISO.

5 Installation & Torque Specs

Even the best guide will fail if installed incorrectly. Ensure mounting surfaces are clean and aligned.

Pro Tip: Bolt Torque Specifications

To ensure proper rigidity and prevent rail warpage, tighten rail bolts to these values (for 12.9 Class Bolts on Iron/Steel beds):

Size 15 (M4) 4.1 N·m

Size 20 (M5) 8.8 N·m

Size 25 (M6) 13.7 N·m

Size 30 (M8) 30.0 N·m

Need Help Choosing?

Not sure which TranzBrillix block matches your old part? Send us a photo of your current model code, and our engineers will identify the compatible replacement for you.

Get a Free Recommendation

* Our engineering team typically replies within 24 hours.

News Details

Home News

How to Choose CNC Linear Guides: The Universal Interchangeability Guide | TranzBrillix

How to Choose CNC Linear Guides
The TranzBrillix Universal Guide

Why CNC Linear Guides Matter

Choosing the right CNC linear guides has a direct impact on cutting quality, vibration, noise, and long-term reliability. When guides are properly sized and installed, you get:

Smoother Surface Finish: Eliminates chatter marks on aluminum, wood, or steel.
Higher Precision: Maintains positioning accuracy under heavy cutting loads.
Longer Tool Life: Stable motion reduces tool wear and breakage.

The Risk: Undersized or worn guides can cause "lost steps," inconsistent cuts, and premature wear on ball screws.

1 Identify Your CNC Machine Type

The first step is defining the application. TranzBrillix offers two distinct series based on your machine structure:

HG Series (Heavy Load)

Best For: CNC Routers, Machining Centers, Lathes, Grinding Machines.

Designed with a 45° contact angle for high rigidity in all 4 load directions (Up/Down/Left/Right).

EG Series (Low Profile)

Best For: 3D Printers, High-speed Automation, Pick & Place Robots.

Compact design with a lower center of gravity for high-speed, lightweight motion.

2 Choose Rail Size by Load Rating

Don't guess the size. Use TranzBrillix Engineering Data (ISO Standard) to match load capacity. Here is a quick reference:

Size	Dynamic Load (C)	Recommended Application
15 mm	11.38 kN	Desktop CNC, Light Engravers
20 mm	17.75 kN	Standard CNC Routers (Most Popular)
25 mm	26.48 kN	Heavy Gantries, Plasma Tables
30 mm+	38.74 kN+	Steel Machining Centers

3 Understand Accuracy & Preload

CNC machines need a balance between smoothness and stiffness. We supply the optimal configuration:

Accuracy Grade (H)

TranzBrillix supplies High (H) Grade as standard. This ensures tight tolerances on rail straightness, essential for precision milling.

Preload (Z1 Recommended)

For CNC Routers, we recommend Z1 (Light Preload). The balls fit tighter to eliminate play, increasing rigidity and preventing vibration marks.

4 Universal Interchangeability Guide

Origin	Brand	Heavy Load Series	Low Profile Series	TranzBrillix Fit
Taiwan, CN	HIWIN	HG Series	EG Series	100% Match
Taiwan, CN	PMI (Silver)	MSA Series	MSB Series	100% Match
Taiwan, CN	TBI Motion	TRH Series	TRS Series	100% Match
Taiwan, CN	ABBA	BRH / BRS	BR (Low)	100% Match
Taiwan, CN	STAF	BGX Series	BGS Series	100% Match
Taiwan, CN	CPC (Chieftek)	ARC / HRC	ERC Series	100% Match
Japan	THK	HSR Series	SSR / SHS	100% Match
Japan	IKO	MH / LWH	--	100% Match
Japan	NSK	LH / NH	LS / NS	100% Match
Germany	Bosch Rexroth	FNS / FLS	--	Compatible*
Germany	INA (Schaeffler)	KUE / KUVE	--	Compatible*
Sweden	Ewellix (SKF)	LLT Series	--	Compatible

* Note for European Brands: While rail width and block height are standard, please verify the rail mounting hole pitch (P) before ordering, as some legacy DIN standards may differ from ISO.

5 Installation & Torque Specs

Even the best guide will fail if installed incorrectly. Ensure mounting surfaces are clean and aligned.

Pro Tip: Bolt Torque Specifications

To ensure proper rigidity and prevent rail warpage, tighten rail bolts to these values (for 12.9 Class Bolts on Iron/Steel beds):

Size 15 (M4) 4.1 N·m

Size 20 (M5) 8.8 N·m

Size 25 (M6) 13.7 N·m

Size 30 (M8) 30.0 N·m

Need Help Choosing?

Not sure which TranzBrillix block matches your old part? Send us a photo of your current model code, and our engineers will identify the compatible replacement for you.

Get a Free Recommendation

* Our engineering team typically replies within 24 hours.

HIWIN Linear Guide

Ball Screw

3D Printer Linear Guide

Linear Guide Rail

Ground Ball Screw

Linear Bearing

Ball Screw Support

Shaft Coupling

Ball Spline

Ball Nut Housing

Linear Shaft

Stainless Steel Shaft

Linear Shaft Supports

CNC Linear Guide

HIWIN Linear Guide

Ball Screw

3D Printer Linear Guide

Linear Guide Rail

Ground Ball Screw

Linear Bearing

Ball Screw Support

Shaft Coupling

Ball Spline

Ball Nut Housing

Linear Shaft

Stainless Steel Shaft

Linear Shaft Supports

CNC Linear Guide

News Details

How to Choose CNC Linear Guides: The Universal Interchangeability Guide | TranzBrillix

How to Choose CNC Linear Guides: The Universal Interchangeability Guide | TranzBrillix

How to Choose CNC Linear Guides: The Universal Interchangeability Guide | TranzBrillix

How to Choose CNC Linear Guides: The Universal Interchangeability Guide | TranzBrillix