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BoWex-ELASTIC

®

 

Operating/Assembly instructions 

Type HEW, HEW Compact and HEW-ZS 

KTR-N 
Sheet: 
Edition: 

40114 EN 
13 of 24 

 

Please observe protection 

note ISO 16016. 

Drawn: 

2019-11-06 Pz 

Replacing: 

KTR-N dated 2019-08-13 

Verified: 

2019-11-06 Pz 

Replaced by: 

 

 

 

 

Valid for type HEW only:

 

Mount the elastomer part (component 1) in front of the coupling flange (component 4) and screw the components 
at the tightening torques T

A

 specified in table 11. 

 

Table 11: Cap screws DIN EN ISO 4762 

Size 

42 

48 

65 

80 

G 80 

100 

125 

G 125 

150 

G 150 

200 

G 200 

Tightening torque T

A

 

[Nm] 

14 

14 

35 

69 

69 

120 

120 

120 

295 

295 

410 

410 

 

  Position the elastomer part (component 1) in front of the flange hub with additional flange or coupling flange. 

  Hand-tighten the components first. Afterwards tighten the screws at the tightening torque T

A

 specified in  

table 11. 

 

Valid for type HEW Compact only:

 

Mount the coupling flange (component 4) in front of the elastomer part (component 1) and screw the components 
at the tightening torques T

A

 specified in table 12. 

 

Table 12: Cap screws DIN EN ISO 4762 

Size 

42 

65 

80 

100 

125 

Tightening torque T

A

 

[Nm] 

14 

69 

120 

120 

250 

 

 

If used in potentially explosive atmospheres the setscrews to fasten the hubs as well as all 
screw connections must be secured against working loose additionally, e. g. conglutinating 
with Loctite (average strength). 

 

 

 

Please observe the 

manufacturer’s instructions regarding the use of adhesives. 

Do not apply glue on the rubber surfaces. 

 
 
 

 
The 

BoWex-ELASTIC

®

 HEW

 couplings accept a position deviation of the machine parts to be connected up to 

the data specified in table 13 
With alignment, the radial and angular displacement should be kept as small as possible, because the service life 
is increased in this way if the operating conditions are otherwise maintained. 
 
The 

BoWex-ELASTIC

®

 HEW

 coupling has to be aligned from the coupling hub on the shaft side towards one of 

the machined surfaces of the flange hub. 
 

 

 

 

In order to ensure a long service life of the coupling and avoid dangers with the use in 
potentially explosive atmospheres, the shaft ends must be accurately aligned. 
Please absolutely observe the displacement figures specified (see table 11). 
If the figures are exceeded, the coupling will be damaged. 
The more accurate the alignment of the coupling, the longer is its service life. 

 
 
 
 
 
 
 
 

Assembly 

4.3  Assembly of the coupling 

4.4  Displacements - alignment of the couplings 

Summary of Contents for BoWex-ELASTIC HEW Compact

Page 1: ...f 24 9 Please observe protection note ISO 16016 Drawn 2019 11 06 Pz Replacing KTR N dated 2019 08 13 Verified 2019 11 06 Pz Replaced by BoWex ELASTIC highly flexible flange coupling types HEW HEW Comp...

Page 2: ...tended use 8 2 5 Coupling selection 8 2 6 Reference to EC Machinery Directive 2006 42 EC 8 3 Storage transport and packaging 9 3 1 Storage 9 3 2 Transport and packaging 9 4 Assembly 9 4 1 Components o...

Page 3: ...125 192 438 15 16 M12 416 478 175 140 99 G 125 125 125 192 489 8 M12 440 530 175 140 95 150 160 160 225 542 9 6 M16 470 585 225 150 100 G 150 160 160 225 542 9 6 M16 504 585 225 150 108 200 180 200 25...

Page 4: ...90 125 40 T40 3000 9000 50 T50 150 450 50 T50 4000 12000 65 T65 180 540 65 T65 5000 15000 48 40 T40 200 600 G 125 40 T40 4000 12000 50 T50 230 690 50 T50 5200 16000 65 T65 280 840 65 T65 6500 20000 65...

Page 5: ...90 110 90 73 58 258 187 16 M12 40 2 0 152 0 087 125 365 125 125 235 192 205 365 120 140 150 90 68 328 240 12 M16 75 0 0 36 0 26 Table 4 Technical data HEW Compact Size Elastomer hardness Shore A Torq...

Page 6: ...2 100 110 90 438 15 8 M12 350 478 158 180 135 80 80 16 125 125 120 438 15 16 M12 416 478 175 225 180 80 99 18 G 125 125 120 489 8 M12 440 530 175 225 180 80 95 15 Size Dimensions mm Spacer HEW ZS LZ m...

Page 7: ...r serious bodily injuries that may result in death Warning of product damages This symbol indicates notes which may contribute to preventing material or machine damage General advice This symbol indic...

Page 8: ...ing to DIN 740 part 2 for the particular application see catalogue drive technology BoWex ELASTIC If the operating conditions performance speed modifications on engine and machine change the coupling...

Page 9: ...tive air humidity is less than 65 In order to avoid any injuries and any kind of damage always make use of proper transport and lifting equipment The couplings are packed differently each depending on...

Page 10: ...IC type HEW Compact Components of BoWex ELASTIC type HEW ZS Component Number Description 1 1 Elastomer part 2 1 Hub spec 3 1 Intermediate flange hub 4 1 Coupling flange 4 1 1 Additional flange 4 2 1 F...

Page 11: ...machining KTR supplies unbored or pilot bored coupling components and spare parts only upon explicit request of the customer These parts are additionally marked with the symbol Reference to unbored re...

Page 12: ...well as all screw connections must be secured against working loose additionally e g conglutinating with Loctite average strength Valid for type HEW ZS only size 100 to G 125 Screw the flange hub comp...

Page 13: ...Nm 14 69 120 120 250 If used in potentially explosive atmospheres the setscrews to fasten the hubs as well as all screw connections must be secured against working loose additionally e g conglutinatin...

Page 14: ...general standard figures that apply up to an ambient temperature of 80 C ensuring a sufficient service life of the BoWex ELASTIC coupling Displacement figures between the speeds specified have to be i...

Page 15: ...75 0 75 0 75 0 75 0 75 0 75 0 75 0 75 65 2 3 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 Perm angular displacement with n 3000 rpm Kw degree 40 3 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 50 3 0 4 0 4 0 4 0 4 0 4 0 4 0 4 0...

Page 16: ...er may only be taken off with standstill of the unit For covers with unlocked openings on the top face no light metals must be used if the couplings are used as equipment of equipment group ll if poss...

Page 17: ...r potentially explosive atmospheres Elimination Different operating noise and or vibrations occuring Micro friction by faulty alignment on the spline of the elastomer part Danger of ignition due to ho...

Page 18: ...nce by ozone too high ambient temperature etc causing a physical change of the elastomer part none 1 Set the unit out of operation 2 Disassemble the coupling and remove remainders of the elastomer par...

Page 19: ...s explosion group IIIA and IIIB are included in IIIC Temperature class Temperature class Ambient or operating temperature Ta 1 Max surface temperature 2 T4 30 C to 80 C 115 C T5 30 C to 60 C 95 C T6 3...

Page 20: ...be performed after 2 000 operating hours or at the latest after 18 months provided that the operating parameters remain the same If you note significant wear with the initial inspection so that it wo...

Page 21: ...nst accidental switch on Turn the hub opposite the direction of drive Here the elastomer part must not be axially displaced from its position of wear Mark elastomer part and hub see Illustration 16 Tu...

Page 22: ...void dangers with the use in potentially explosive atmospheres the shaft ends must be accurately aligned Please absolutely observe the displacement figures specified see tables 13 and 14 If the figure...

Page 23: ...arking is only made if not possible differently for reason of space or functioning BoWex ELASTIC Year Deviating marking applies until 31st October 2019 Short marking II 2GD c IIB T X Complete marking...

Page 24: ...ith the general safety and health requirements according to enclosure II of directive 2014 34 EU The coupling described in here complies with the specifications of the following standards rules DIN EN...

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