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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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Flexible couplings ZTK

Flexible couplings of ZTK series have the special characteristics due to their unique design. Features are the construction of a metal coupling half and elastic characteristics of the flexible insertion.


Flexible compensate couplings of ZTK series


Backlash-free flexible couplings: ZTK series. Features are the construction of a metal coupling half and elastic characteristics of the flexible insertion.
●Providing the connection without a backlash;
●High wear resistance and reliability in comparison with the high torsional strength;
●Service and repair are not required;
●Flexible insertion smooths out the impact loads;
●Identical characteristics at the mode of constant rotation and reverse;
●Oil resistance and electrical insulating properties;
●Working environment temperature: -30℃~80℃.

Flexible couplings of ZTK series 

Flexible insertion

 

Scheme of ZTK flexible insertion

The flexible insertion is made without a hole in the form of five-pointed star, that simplifies its installation. The width of the flexible insertion is larger than the known analogs have, that prevents the skewing at the docking of the coupling halves.

Backlash

Vibration isolation of the coupling halves due to backlash "S" at the docking of the coupling halves.

External diameters of ZTK series

External diameter Ø14~Ø30      

     External diameter Ø40

External diameter Ø55~Ø100

 

Application

Material

●Electric motor;
●Position control;
●Robotics;
●Drive of the drilling and grinding machines;
●Machine tools;
●Medical equipment;
●Servomotor;
●Drive of X-Y and X-Y-Z axes;
●Brake motor.

1) Flexible element - elastomer;
2) Coupling half: aluminum, with anodized surface.

Selecting the flexible couplings of ZTK series

The couplings can be selected on the basis of two principles: the principle of achieving the coupling rotation without a backlash and the principle of achieving the required torque.

1. Achieving the coupling rotation without a backlash. To achieve a zero backlash of the rotation in cases when helical couplings are typically used which are capable of absorbing the fluctuations at the transmission of torque, a flexible coupling should be used at relatively low torques. In this case the torque value should be less than the nominal shown in the characteristics table for the flexible couplings. To achieve the backlash-free mode, refer to the table below, showing the characteristics of the flexible element.

2. Achieving the rated torque. The flexible couplings are also used to transmit the required torque. Thus, the flexible couplings are mainly used for the power drives of industrial facilities, for example, for driving pumps, which do not require the condition of accurate transmission of the rotation angle.

Model Max. rotational speed Moment of inertia Torsional stiffness Admission radial displacement The tolerance of the angular displacement Tolerance of the axial displacement Weight
rpm (kg*m2) (N*m/rad) (mm) (°) (mm) (g)
ZTK  – 14D 19 000 5,9х10-4 46 0,02 1 +0,600 26
ZTK  – 20D 17 000 6,7х10-4 55 0,02 1 +0,600 37
ZTK  – 25D 16 000 7,6х10-4 63 0,02 1 +0,600 42
ZTK  – 30D 12 000 8,5х10-4 72 0,02 1 +0,600 50
ZTK  – 40D 10 000 1,1х10-4 550 0,02 1 +0,600 156
ZTK  – 55D 8 000 4,4х10-4 1500 0,02 1 +0,600 362
ZTK  – 65D 6 000 9,0х10-4 2800 0,02 1 +0,600 582
ZTK  – 80D 4 500 1,8х10-4 3500 0,02 1 +0,600 966
ZTK  – 95D 3 800 2,0х10-4 4600 0,02 1 +0,600 1820
ZTK  – 105D 3 400 3,2х10-4 5800 0,02 1 +0,600 2430


Ordering information

ZTK - 025D -12 - L032 - RD05x05

ZTK - series

025D - Outer Diameter

12 - maximum diameter

L032 - Length

RD05х05 - diameter shafts

Dimensions of ZTK flexible couplings.

External diameter of 14mm to 30mm

Scheme coupling ZLK diameter of 14 to 30 mm

 

External diameter - 40mm

Coupling scheme ZLK 40 mm in diameter

 

 

External diameter of 55mm to 100mm

Scheme coupling ZLK diameter from 55 to 100 mm

 

Properties and characteristics of flexible couplings

 

Product
Number
Dimension, mm Fastening
Bolt
M
Fastening
Torque
(N·m)
Rated
Torque
(N·m)
Max
Torque
(N·m)
D L L1 L2 F dmin dmax
ZTK-014D06-L022-RD03x03 14 22 7 6 3.5 3 6 M2.5 1,0 1,1 2,2
ZTK-020D08-L030-RD04x04 20 30 10 8 5,0 4 8 M3 1,3 2,8 5,6
ZTK-025D12-L034-RD04x04 25 34 11 10 5,0 4 12 M3 1,5 6 12
ZTK-030D14-L035-RD08x08 30 35 11 10 5,0 8 14 M4 1,7 6,5 13
ZTK-040D22-L055-RD14x14 40 55 19,5 12 10 14 22 M5 8,0 32 64
ZTK-055D28-L078-RD14x14 55 78 30 14 11 14 28 M6 8,0 46 92
ZTK-065D35-L090-RD19x19 65 90 35 15 12 19 35 M8 15 109 218
ZTK-080D45-L114-RD24x24 80 114 45 18 16 24 45 M8 15 135 270
ZTK-095D55-L126-RD30x30 95 126 50 20 18 30 55 М10 25 260 520
ZTK-105D60-L140-RD35x35 105 140 56 21 21 35 60 M12 35 430 860

 

 

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Download catalog in ZIP format

 

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