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KTR Kupplungstechnik 

GmbH 

D-48407 Rheine 

RIGIFLEX

®

-N 

Operating/Assembly instructions 

KTR-N 
Sheet: 
Edition:

 

47410 EN 
4 of 19 
9 

 

Please observe protection 

note ISO 16016. 

Drawn: 14.01.14 

Kb/Sta  Replaced for: 

KTR-N dated 28.05.13 

Verified: 

16.01.14 Kb 

Replaced by: 

 

 

1 Technical data 

 

Table 2: Torque and speed 

RIGIFLEX

®

-N size 

35  50

65

75

85

110 120 140

160

Torque 

[Nm] 

T

KN

  120 240 450 940 1700 

2700 4500 9000 

13000 

T

K max.

 240 480 900 1880 3400 

5400 9000 

18000 

26000 

T

KW

 

60  120  225  470  850  1350 2250 4500 6500 

Max. speed n [rpm] 

23000 

18000 

13600 

12400 

11000 

9000 

8000 

6400 

5600 

 

RIGIFLEX

®

-N size 

166 196

216

256

306 346

406

Torque 

[Nm] 

T

KN

  17500 22500 32000 52500 86000 135000 

210000 

T

K max.

 35000 45000 64000 105000 172000 

270000 

420000 

T

KW

  8750  11250 16000 26250 43000 67500 105000 

Max. 

speed 

n 

[rpm] 

5600 5200 4600 3900 3300 2900 2500 

 

RIGIFLEX

®

-N size 

168 198

218

258

308 348

408

Torque 

[Nm] 

T

KN

  23000 30000 42500 70000 115000 

180000 

280000 

T

K max.

 46000 60000 85000 140000 230000 

360000 

560000 

T

KW

  11500 15000 21500 35000 57500 90000 140000 

Max. 

speed 

n 

[rpm] 

5600 5200 4600 3900 3300 2900 2500 

 

 

RIGIFLEX

®

-N couplings with attachments that can generate heat, sparks and static charging 

(e. g. combinations with brake drums, brake disks, overload systems like torque limiters, 
fans etc.) are not permitted for the use in hazardous locations. 
A separate analysis must be performed. 

 
 
 

2 Advice 

 

2.1 Coupling selection 

 

! 

 

C A U T I O N !  
For a long-lasting and failure-free operation of the coupling it must be selected according to 
the selection instructions for the particular application (see RIGIFLEX

®

-N catalogue). 

If the operating conditions (performance, speed, modifications on engine and machine) 
change, the coupling selection must be reviewed again. 
Please note that the technical data regarding torque refer to the lamina set only. The trans-
mittable torque of the shaft/hub connection must be reviewed by the customer and is sub-
ject to his responsibility. 

 
For drives subject to torsional vibrations (drives with cyclic stress due to torsional vibrations) it is necessary to 
perform a torsional vibration calculation to ensure a reliable selection. Typical drives subject to torsional vibrations 
are e. g. drives with diesel engines, piston pumps, piston compressors etc. If requested, KTR will perform the 
coupling selection and the torsional vibration calculation. 
 
 

2.2 General advice 

 
Please read through these assembly instructions carefully before you start up the coupling. 
Please pay special attention to the safety instructions! 
 

 

The 

RIGIFLEX

®-

N

 coupling is suitable and approved for the use in hazardous locations. When using 

the coupling in hazardous locations please observe the special advice and instructions regarding 
safety in enclosure A. 

 
The assembly instructions are part of your product. Please keep them carefully and close to the coupling. 
The copyright for these assembly instructions remains with 

KTR

 Kupplungstechnik GmbH. 

 
 
 

Содержание RIGIFLEX-N

Страница 1: ... EN 1 of 19 9 Please observe protection note ISO 16016 Drawn 14 01 14 Kb Sta Replaced for KTR N dated 28 05 13 Verified 16 01 14 Kb Replaced by RIGIFLEX N Torsionally stiff steel lamina coupling type A according to directive 94 9 EC ATEX 95 for finish bored pilot bored and unbored couplings Size 35 Size 50 408 ...

Страница 2: ...gs 2 5 Intended use 3 Storage 4 Assembly 4 1 Components of the couplings 4 2 Advice for finish bore 4 3 Assembly of the coupling hubs 4 4 Assembly of the spacer 4 5 Displacements alignment of the couplings 4 6 Spares inventory customer service addresses 5 Enclosure A Advice and instructions regarding the use in hazardous locations 5 1 Selection of the coupling size 5 2 Intended use in hazardous lo...

Страница 3: ...80 200 250 M10 25 120 120 165 213 130 102 20 3 0 12 180 200 250 M12 25 140 140 200 265 160 126 25 4 0 15 200 250 M12 30 160 160 230 305 170 145 31 5 0 15 250 M12 30 166 160 230 305 184 155 31 2 0 17 According to customer spe cification M16 30 70 196 190 260 330 200 185 32 2 5 24 M16 40 90 216 210 285 370 220 205 32 2 5 26 M20 50 110 256 250 350 440 265 245 38 2 5 31 M20 70 130 306 300 400 515 310 ...

Страница 4: ...d 2 Advice 2 1 Coupling selection C A U T I O N For a long lasting and failure free operation of the coupling it must be selected according to the selection instructions for the particular application see RIGIFLEX N catalogue If the operating conditions performance speed modifications on engine and machine change the coupling selection must be reviewed again Please note that the technical data reg...

Страница 5: ...idental switch on e g by providing warning signs at the place of switch on or removing the fuse for current supply Do not touch the operation area of the coupling as long as it is in operation Please secure the coupling against accidental contact Please provide for the necessary protection devices and covers 2 5 Intended use You may only assemble operate and maintain the coupling if you have caref...

Страница 6: ...see table 4 Setscrews DIN EN ISO 4029 2 1 Spacer complete 3 see table 3 Cap screws Size 35 Size 50 408 Illustration 2 RIGIFLEX N type A Table 3 RIGIFLEX N size 35 50 65 75 85 110 120 140 160 Number of cap screws 1 24 16 24 24 36 36 36 36 36 RIGIFLEX N size 166 196 216 256 306 346 406 Number of cap screws 1 24 24 36 36 36 36 36 RIGIFLEX N size 168 198 218 258 308 348 408 Number of cap screws 1 32 3...

Страница 7: ...le with pilot bored or unbored hubs respectively It has to be drilled according to illustration 3 Size and depth of the centering are shown in table 1 Size 35 Size 50 408 Illustration 3 Concentricity and axial runout C A U T I O N The customer bears the sole responsibility for all machining processes performed subse quently on unbored or pilot bored as well as finish machined coupling components a...

Страница 8: ... this advice may cause damage to the coupling For the axial alignment of the coupling the distance dimension E see table 1 is decisive In order to adjust the right dimension E you should proceed as follows Shift the coupling hubs on the shaft of the driving and driven side The internal sides of the coupling hubs must be flush with the front sides of the shafts illustration 4 Align the power pack i...

Страница 9: ... have reached the full tightening torque see table 7 Table 6 RIGIFLEX N size 35 50 65 75 85 110 120 140 160 Value R mm 1 7 1 2 1 2 1 7 1 7 2 2 2 2 3 2 4 2 RIGIFLEX N size 166 168 196 198 216 218 256 258 306 308 346 348 406 408 Value R mm 2 2 2 7 2 7 2 7 3 2 3 2 3 2 Table 7 Tightening torques of the cap screws RIGIFLEX N size 35 50 65 75 85 110 120 140 160 Dimension Mxl mm M4x45 M6x22 M6x25 M8x30 M...

Страница 10: ... 8 If the figures are exceeded the coupling will be damaged The more accurate the alignment of the coupling the longer is its service life If used in hazardous locations for the explosion group IIC marking II 2GD c IIC T X only half of the displacement figures see table 8 are permissible Please note The displacement figures mentioned in table 8 are maximum figures which must not arise in parallel ...

Страница 11: ...1 05 1 54 1 78 2 39 120 0 7 2 6 1 00 1 49 1 73 2 35 140 0 7 3 3 1 55 2 16 160 0 7 3 8 1 99 166 0 7 3 7 Mounting dimension E as indicated by the customer 196 0 7 4 2 216 0 7 4 5 256 0 7 5 2 306 0 7 6 0 346 0 7 6 7 406 0 7 7 5 168 0 5 2 6 198 0 5 2 6 218 0 5 2 9 258 0 5 3 5 308 0 5 4 2 348 0 5 4 8 408 0 5 5 0 each lamina set 4 6 Spares inventory customer service addresses A basic requirement to ensu...

Страница 12: ...echanical and or chemical influences with the different operating conditions in a way that the explosion protection is not affected 1 Industry with the exception of mining Equipment group II of category 2 and 3 coupling is not approved for equipment group 1 Media class G gases fogs steams zone 1 and 2 coupling is not approved for zone 0 Media class D dusts zone 21 and 22 coupling is not approved f...

Страница 13: ...ficant or no wear on the lamina set upon this initial inspection further inspections can each be performed after 6000 operating hours or at the latest after 18 months provided that the operating parameters remain the same If you note significant wear during the initial inspection so that it would be recommendable to replace the lamina sets please find out the cause according to the table Breakdown...

Страница 14: ... have to be replaced by a new fully as sembled spacer immediately Illustration 11 RIGIFLEX N type A C A U T I O N In order to ensure a long service life of the coupling and avoid dangers with the use in haz ardous locations the shaft ends must be accurately aligned Please absolutely observe the displacement figures indicated see table 8 If the figures are exceeded the coupling will be damaged Faul...

Страница 15: ...ssary and also inspect all screw connections for the tightening torques specified each dependent on the type of coupling If used in hazardous locations the setscrews to fasten the coupling hubs as well as all screw con nections must be secured against working loose additionally e g conglutinating with Loctite aver age strength Finally the coupling protection against accidental contact must be fitt...

Страница 16: ...riming painting etc couplings are used in hazardous locations the requirements on conductibility and coating thickness must be considered In case of paintings up to 200 µm electro static load does not have to be expected Multiple coatings that are thicker than 200 µm are prohib ited for explosion group llC 5 8 Breakdowns causes and elimination The below mentioned failures can result in a use of th...

Страница 17: ... under the screw head and on the steel lamina set Danger of ignition due to hot surfaces 1 Set the unit out of operation 2 Inspect coupling components and re place coupling components that are damaged 3 Tighten the cap screws until the per missible tightening torque is reached 4 Inspect alignment adjust if necessary Screws for axial fastening of coupling hubs working loose none 1 Set the unit out ...

Страница 18: ...remainders of the spacer 3 Inspect coupling components and re place coupling components that are damaged 4 Insert spacer mount coupling compo nents 5 Instruct and train the service staff Cracks in fracture of the steel lamina set locking screws Vibrations of drive Ignition risk due to sparking 1 Set the unit out of operation 2 Disassemble the coupling and remove remainders of the spacer 3 Inspect ...

Страница 19: ...tions correspond to article 1 3 b of directive 94 9 EC and comply with the general safety and health requirements according to enclosure II of directive 94 9 EC The RIGIFLEX N steel lamina coupling is in accordance with the specifications of directive 94 9 EC One or several directives mentioned in the corresponding EC type examination certificate IBExU07ATEXB004 X were in part replaced by updated ...

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