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  • +7 (495) 407-01-02
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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


The main feature of the guideway of QR series is a ultra high load capacity and very high rigidity, with a low noise level and smooth motion. Due to four row location of the rollers in the carriage, QR series has a uniform loadability in all directions. Due to the linear working contact surface, the deformation is minimized because of the perceived loads, and a very high rigidity and load capacity are achieved in all four directions of the load action.

Accuracy classes

Accuracy classes of QR series are classified into:

  • - normal (C),
  • - high (H),
  • - precision (P),
  • - super precision (SP),
  • - ultra precision (UP).

The choice depends on the equipment requirements.

Accuracy classes of non-interchangeable system

Accuracy of non-interchangeable system
Item QR-20 QR-25,30,35 QR- 45
Accuracy classes H P SP UP H P SP UP H P SP UP
Dimensional tolerance of height Н ±0.03 -0.015 -0.02 -0.01 ±0.04 -0.04 -0.02 -0.01 ±0.05 -0.05 -0.03  -0.02
Dimensional tolerance of width N ±0.03 -0.015 -0.02 -0.01 ±0.04 -0.04 -0.02 -0.01 ±0.05 -0.05 -0.03  -0.02
Variation of height Н 0.006 0.004 0.005 0.003 0.015 0.007 0.005 0.003 0.015 0.007 0.005  0.003
Variation of width N 0.006 0.004 0.005 0.003 0.015 0.007 0.005 0.003 0.02 0.01 0.007  0.005
Running parallelism of block surface C to surface A See table "Accuracy of running parallelism"
Running parallelism of block surface D to surface B

 

Accuracy classes of interchangeable system

Accuracy of interchangeable system
Item QR-20 QR-25,30,35 QR-45
Accuracy classes H P H P H P
Dimensional tolerance of height Н ±0.03 ±0.015 ±0.04 ±0.02 ±0.05 ±0.025
Dimensional tolerance of width N ±0.03 ±0.015 ±0.04 ±0.02 ±0.05 ±0.025
Variation of height Н 0.01 0.006 0.015 0.007 0.015 0.007
Variation of width N 0.01 0.006 0.015 0.007 0.02 0.01
Running parallelism of block surface C to surface A See table "Accuracy of running parallelism"
Running parallelism of block surface D to surface B

 

Accuracy of running parallelism

Rail length (mm) Accuracy (µm)
H P SP UP
100 7 3 2 2
100-200 9 4 2 2
200-300 10 5 3 2
300-500 12 6 3 2
500-700 13 7 4 2
700-900 15 8 5 3
900-1100 16 9 6 3
1100-1500 18 11 7 4
1500-1900 20 13 8 4
1900-2500 22 15 10 5
2500-3100 25 18 11 6
3100-3600 27 20 14 7
3600-4000 28 21 15 7

Preload

Preload classes

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

Class Code Preload Examples of application
Light preload Z0 0,02-0.04C Certain load direction, low impact, low precision required
Medium preload ZA 0.07C-0.09C High rigidity required, high precision required
Heavy preload ZB 0.012C-0.014C Super high rigidity required, with vibration and impact

"C" means the dynamic load capacity in the column "Preload".