Flexible Shaft Coupling Accessories - EK Series Elastomer Inserts

Flexible Shaft Coupling Accessories - EK Series Elastomer Inserts

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The equalizing element of the EK coupling is the elastomer insert. It transmits torque without backlash or vibration. The elastomer insert defines the characteristics of the entire drive system.

Backlash is eliminated by the press fit of the elastomer into the hubs. Through variation of the Shore hardness of the elastomer insert, the coupling system can be optimized for the ideal torsional characteristics.

Part Number

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R+W Elastomer Couplings

Information

Axes of Misalignment

     
Lateral Angular Axial
     

Function

The equalizing element of the EK coupling is the elastomer insert.
It transmits torque without backlash or vibration.The elastomer
insert defines the characteristics of the entire drive system.
 Backlash is eliminated by the press fit of the elastomer into the hubs.
Through variation of the Shore hardness of the elastomer insert,
the coupling system can be optimized for the ideal torsional characteristics.

Sizes 2 - 800


Shore hardness 98 A         Shore hardness 64 Sh D          Shore hardness 80 Sh A          Shore hardness 65 Sh D          Shore hardness 64 Sh D

Sizes 2500 - 9500

The coupling includes 5x elastomer segments

    Shore hardness 98 Sh A                   Shore hardness 64 Sh D                   Shore hardness 65 Sh D                  Shore hardness 64 Sh D

Specification

Description of the Elastomer Inserts

TypeShore hardnessColorMaterialRelative
damping (Ψ)
Temperature rangeFeatures
A98 Sh AredTPU   0.4 - 0.5   -30°C to +100°Chigh damping
B64 Sh DgreenTPU 0.3 - 0.45 -30°C to +120°Chigh torsional stiffness
C80 Sh AyellowTPU 0.3 - 0.4 -30°C to +100°Cvery high damping
D*65 Sh DblackTPU 0.3 - 0.45 -10°C to +70°Celectrically conductive
E64 Sh DbeigeHytrel 0.3 - 0.45 -50°C to +150°Ctemperature resistant
*The electrical conductivity of the elastomer material is to prevent the electrostatic charging of the elastomer coupling system, to reduce the risk of sparking in operation. ATEX technical data is available upon request.
The values of the relative damping were determined at 10 Hz and +20˚ C.

Sizes EK

SIZE25102060150
Type (Elastomer insert) ABCABCABCABCABCABC
Static torsional
stiffness

(Nm/rad)
CT50115171503505326060090114025005203290975014004970106002000
Dynamic torsional
stiffness
(Nm/rad)CTdyn10023035300700106541165022425404440876794011900207213400293003590
Lateral(mm)Max.
values
0.080.060.20.080.060.20.10.080.220.10.080.250.120.10.250.150.120.3
Angular(Degree)10.81.210.81.210.81.210.81.210.81.210.81.2
Axial(mm)±1±1±1±1.5±1.5±1.8
 
SIZE*300450800250045009500
Type (Elastomer insert)  ABCABCABCABABAB
Static torsional
stiffness

(Nm/rad)
CT124001800030001510027000412041300660801032087600109000167000372000590000670000
Dynamic
torsional stiffness

(Nm/rad)
CTdyn23700404006090554008120011600826001801502860017500021600033700074300011800001340000
Lateral(mm)Max. values0.180.140.350.20.180.350.250.20.40.50.30.50.30.60.4
Angular(Degree)10.81.210.81.210.81.21.511.511.51
Axial(mm)±2±2±2±3±3±4
Static torsional stiffness at 50% TKN                                                                Dynamic torsional stiffness at TKN
* Note: The technical values for elastomer inserts D and E correspond to the values for B, due to the identical Shore hardness.
Part Number
EK/9500/A
EK/9500/B
EK/9500/D
EK/9500/E
Part Number
Standard Unit Price
Minimum order quantityVolume Discount
Standard
Shipping Days
?
Allowable Torque Range
(N•m)
Max. Rotational Speed Range
(r/min)
Feature Allowable Torque
(Nm)
Max. Rotational Speed
(r/min)
Allowable Lateral Misalignment Range
(mm)
Allowable Lateral Misalignment
(mm)
Allowable Angular Misalignment
(deg)
Operating Temperature Range
(°C)
Allowable Axial Clearance (±)
(mm)
Torsional Stiffness
(N-m/rad)
Size Elastomer Insert

35.17 €

5 12 Days 10,000 to Less than 20,0001,001 to 2,000Vibration Insulation1000020000.41 to 1.00.61.5-30~10045900009500A - Shore 98A

35.17 €

5 12 Days 10,000 to Less than 20,0001,001 to 2,000High Torsional Rigidity1250020000.21 to 0.400.41-30~12046700009500B - Shore 64D

57.18 €

5 12 Days 10,000 to Less than 20,0001,001 to 2,000-1250020000.21 to 0.400.41-10~7046700009500D - Shore 65D

138.00 €

5 12 Days 10,000 to Less than 20,0001,001 to 2,000Heat Resistant1250020000.21 to 0.400.41-50~15046700009500E - Shore 64D

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Basic information

Type Jaw Type Allowable Misalignment Angular Misalignment / Eccentricity / Axial Misalignment Body Material Resin
Shaft D1 Keyway Without Keyway Shaft D2 Keyway Without Keyway

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