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25.09.2014 | We invite you to visit our stand at the exhibition "Mashex-2014"!

Get an e-ticket to the exhibition "Mashex-2014"Dear Partners and Clients!

We invite you to visit our stand №C261, hall №3 at the 17th international exhibition of equipment and technologies of metalworking and working of composite materials "Mashex-2014", which will be organized from 28 to 31 October in the exhibition center "Crocus Expo", pavilion №1, Moscow, Russia.

24.09.2014 | We invite you to visit our stand at the exhibition "Stankostroenie-2014"!

Get an e-ticket to the exhibition "Stankostroenie-2014"Dear Partners and Clients!

We invite you to visit our stand №В222 , pavilion №1, hall №2 at the international specialized exhibition "Stankostroenie-2014", which will be organized from 14 to 17 October, 2014 in the exhibition center "Crocus Expo" (Moscow, Russia).

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Main characteristics



Features of HG series


Specially designed construction of HG series with a semicircular profile and the balls contact angle of 45 degrees provides the avoid of the most installation errors caused by irregularities of the mounting surface, and smooth movement by the flexible deformation of the rolling elements and the displacement of the contact points. Ability to self-adjustment, high accuracy and smooth stroke are combined with easy installation.


Due to the strict dimensional control, HG series can maintain the serial acceptability. This means that any carriage and rail in the series can be used together in the case of size coincidence. The clamp prevents the balls loss in the case when the carriage is removed from the rail.

High structural rigidity in all directions

Due to four point contact of the balls, HG series has a uniform loadability in all directions. Due to semicircular profile of the raceways and large contact surface of the balls and raceway, a high load capacity and rigidity of the construction are achieved.

Accuracy classes

Accuracy classes of HG series are classified into:

● normal (C),
● high (H),
● super precision (SP),
● ultra precision (UP).

The choice depends on the equipment requirements.




Accuracy of Running Parallelism


Rail Length (mm)Accuracy (μm)
100 12 7 3 2 2
100-200 14 9 4 2 2
200-300 15 10 5 3 2
300-500 17 12 6 3 2
500-700 20 13 7 4 2
700-900 22 15 8 5 3
900-1100 24 16 9 6 3
1100-1500 26 18 11 7 4
1500-1900 28 20 13 8 4
1900-2500 31 22 15 10 5
2500-3100 33 25 18 11 6
3100-3600 36 27 20 14 7
3600-4000 37 28 21 15 7



The preload can be set for each profile rail guideway. For this purpose oversized balls are used. Usually a negative clearance between the rolling surface and balls is used in the profile rail guideways for increase of the rigidity and accuracy. The curve shows that rigidity doubles with the strong preload. To avoid premature wear of the system, the preload over ZA type is not recommended for profile guideways, size of which is less than 20.

Preload classes

There are three types of standard preload for different application conditions.

Code Preload Condition Examples of Application

Light Preload

Z0 0-0.02C

Certain load direction,low impact, low precision required

Transportation devices, auto-packing machines, X-Y axis for general industrial machines, welding machines, welders

Medium Preload

ZA 0.05C-0.07C High precision required

Machining centers, Z axis for general industrial,machines, EDM, NC lathes, Precision X-Y tables,measuring equipment

Heavy Preload

ZB 0.10C-0.12C

High rigidity required, with vibration and impact

Machining centers, grinding machines, NC lathes, horizontal and vertical milling machines, Z axis of machine tools, Heavy cutting machines

 Note: The "C" in the preload column denotes basic dynamic load rating

Class Interchangeable Guideway Non-Interchangeable Guideway

Preload classes