EK7

Elastomer couplings

The EK7 type claw coupling from R+W Couplings features a compact design and is easy to assemble and disassemble. The EK7 coupling offers a backlash-free solution. This precision coupling can be combined with various types of R+W elastomeric spiders. All types of R+W elastomeric spiders dampen vibrations and are electrically insulating, with the ATEX version being conductive. For specific inquiries about claw couplings, please contact VARIODRIVE.

Version
Taper lock bushing with clamping hub
Nom. Torque
2 - 2150 Nm
Speed
tot 15.000 rpm
Temperature range
Depending on the type of elastomer star
Material elastomer star
Precision cast, wear-resistant, and thermally stable polymer
Material hub
Aluminium or steel
Peak load
Tot 1,5x nom. Torque
Backlash
None
Service-life
no service
Optional
RVS, ATEX

Datasheets
  • Bestelcode instructies
  • ATEX instructies
  • Datasheet EK7
Manuals
  • Manual EK koppelingen
EK7 drawing
Tabel
EK7 Series5102060150300450800
Type (Elastomer insert)A | B | CA | B | CA | B | CA | B | CA | B | CA | B | CA | B | CA | B | C
Rated torque (Nm) TKN9 | 12 | 212,5 | 16 | 417 | 21 | 660 | 75 | 20160 | 200 | 42325 | 405 | 84530 | 660 | 95950 | 1100 | 240
Inside diameter possible from Ø to Ø H7 (mm) Dl4-12,75-168-2512-3219-3620-4528-6035-80
Inside diameter of elastomer (mm) DE10,214,219,226,229,236,246,260,5
Outside diameter (mm) B2532425666,582102136,5
Outside diameter with screw head (mm) Bs253244,5576885105139
Moment of inertia D1 (10-3 kgm2) J10,0020,0030,010,040,080,30,668
Moment of inertia D2 (10-3 kgm2) J20,0020,010,040,10,212,69
Approximate weight (kg) 0,040,050,120,30,50,91,57,6
Fastening screw (ISO 4762) E1M3M4M5M6M8M10M12M16
Fastening screw (ISO 4762) E2M4M5M6M8M10M12M16M16
Distance between centerlines (mm) F810,515,52124293850,5
Distance (mm) G458,510111517,523
Speed standard (min -1) 1500013000125001100010000900080004000
Speed balanced (10³min-1) 57 | 65 | 4353 | 63 | 4045 | 60 | 3531 | 31 | 2522 | 26 | 1822 | 26 | 1616 | 17 | 1213 | 13 | 8
Mounting length (mm) C1810,3172021313446
Fit length (mm) C21220252732455560
Outside diameter range h7 (mm) D210-1613-2514-3023-3626-4238-6042-7042-80
Maximum torque* (Nm) TKmax18 | 24 | 425 | 32 | 634 | 42 | 12120 | 150 | 35320 | 400 | 85650 | 810 | 1701060 | 1350 | 1901900 | 2150 | 400
Overall length (mm) A2228404651687694
Tightening torque El248153570120290
Tightening torque (Nm) E249123260110240300
Length (mm) H77101116202727
5102060150300450800
Downloads
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  • Datasheets
  • Manuals
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Frequently Asked Questions

You can place an order with VARIODRIVE by sending your request to orders@variodrive.nl. Your request will then be processed directly by our internal sales team.

By choosing VARIODRIVE’s complete solution, you won’t need to worry about integrating different drive components into the machine’s drive chain. We stand behind our complete solution and can guarantee its functionality.

Due to our in-depth knowledge of our products and their integration into applications, we can provide a system warranty. At that point, we guarantee that the application will function using our motion control and traction solutions.

For most products on our website, you can download the 3D files. If the desired 3D file is not available, please contact sales@variodrive.nl, and we will send you the 3D file as soon as possible.

You can download the necessary configuration software for most products on our website. For a few products, this might not be possible. In such cases, please contact sales@variodrive.nl, and we will assist you as soon as possible.

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