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News

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



Rotation system of the balls: carriage, rail, end cap and retainer.

Lubrication system: grease nipple and oil adapter

Dust proof: end seal, bottom and double seal, cap, scraper.

Accuracy classes

Accuracy classes of EG series are classified into:

  • - normal (C),
  • - high (H),
  • - precision (P),
  • - super precision (SP),
  • - ultra precision (UP).
The choice depends on the equipment requirements.

 

Accuracy of interchangeable guideways Accuracy of non-interchangeable guideways
Item EG-15,20 EG-25,30,35 EG-15,20 EG-25,30,35
Accuracy Classes C H P C H P C H P SP UP C H P SP UP
Dimensional tolerance of height H ±0.1 ±0.03 ±0.015 ±0.1 ±0.04 ±0.02 ±0.1 ±0.03 0-0.03 0-0.015 0-0.008 ±0.1 ±0.04 0-0.04 0-0.02 0-0.01
Dimensional tolerance of width N ±0.1 ±0.03 ±0.015 ±0.1 ±0.04 ±0.02 ±0.1 ±0.03 0-0.03 0-0.015 0-0.008 ±0.1 ±0.04 0-0.04 0-0.02 0-0.01
Variation of height H 0.02 0.01 0.006 0.02 0.015 0.007 0.02 0.01 0.006 0.004 0.003 0.02 0.015 0.007 0.005 0.003
Variation of width N 0.02 0.01 0.006 0.03 0.015 0.007 0.02 0.01 0.006 0.004 0.003 0.03 0.015 0.007 0.005 0.003
Running parallelism of block surface C to surface A Watch the table "Accuracy of Running Parallelism"
Running parallelism of block surface D to surface B

 


Accuracy of Running Parallelism

 

Rail Length (mm) Accuracy (μm)
C H P SP UP
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

Preload

 

Definition

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.

Class Code Preload
Condition

Very Light Preload

Z0 0-0.02C Certain load direction,low impact, low precision required

Light Preload

ZA 0.03C-0.05C Low load and high precision required

Medium Preload

ZB 0.06C-0.08C High rigidity required, with vibration and impact

 

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

Class Interchangeable Guideway
Non-Interchangeable Guideway
Preload classes Z0, ZA Z0,ZA,ZB