Claw couplings / grub screw clamping, feather key DIN 6885 / claw disc: PU / body: aluminium, steel / EK1 / R+W ANTRIEBSELEMENTE

Claw couplings / grub screw clamping, feather key DIN 6885 / claw disc: PU / body: aluminium, steel / EK1 / R+W ANTRIEBSELEMENTE

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Design
· Two concentriclly machined hubs with curved jaws, keyways and set screws
· From series 2500 elastomer insert consists of five individual segments

Material
· Hubs:
up to 450 series – high-strength aluminum
from series 800 – steel
from series 2500 – GGG40
· Elastomer insert: wear-resistant thermally stable TPU

Temperature range
· Depending on elastomer insert

Features
· Low-priced
· High concentricity
· Low backlash (keyway)

Part Number

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EK1 Backlash Free Elastomer Couplings

Product Properties

With Keyway ConnectionWith Keyway Mounting
0.5 - 2,150 Nm1,950 - 25,000 Nm
• economical design
• concentrically machined
• vibration damping
• electrically isolating
• press fit design
• low backlash, due to keyway connection

Material

Coupling hub: up to series 450 high strength aluminum, series 800 and up steel
Elastomer insert: precision molded, wear resistant, and thermally stable polymer

Design

Two coupling hubs are concentrically machined with curved jaws
Bore tolerance H7 + keyway + set screw per DIN 916
Optional pilot bore (DV)

Speeds

See table below
* Please contact R+W
  ISO 2.5 balance grade available

Tolerance

Overall clearance between shaft and hub 0.01 to 0.05 mm

Drawing

Series 
2 - 800 
 
Series 
2500 - 9500

Specification

Size  25102060150300450800250045009500
Type (Elastomer insert) ABCABCABCABCABCABCABCABCABCABABAB
Rated torque(Nm)TKN22.40.5912212.516417216607520160200423254058453066095950110024019502450500062001000012500
Max. torque(Nm)TKmax44.811824425326344212120150353204008565081017010601350190190021504003900490010000124002000025000
Overall length(mm)A203435667890114126162213272341
Outside diameter(mm)B/B1152532425666.582102136.5160 / 154225 / 190290 / 240
Mounting length(mm)C6.5121225303545506588113142
Inside diameter (pilot bored)(mm)DV3467914162229304050
Inside diameter range H7(mm)D1/23 - 96 - 156 - 188 - 2512 - 3219 - 3820 - 4528 - 6032 - 8030 - 9540 - 13050 - 170
Inside diameter of elastomer(mm)DE6.210.214.219.226.229.236.246.260.580111145
Set screws (DIN 916)Esee table (depending on bore Ø)**
Distance(mm)G35691112151730253040
Possible shortening length(mm)H4661922263237436989110
Moment of inertia per hub(10-3 kgm2)J1/J20.00010.0010.0030.020.060.10.41.11240147480
Approx. weight(kg) 0.0080.030.080.150.350.61.11.71112.52553
Speed standard(min-1) 15,00015,00013,00012,50011,00010,0009,0008,0004,0003.5003.0002.000
Speed balanced(103min-1) 606745576543536340456035313125222618222616161712131381010886.56.5
1 Nm = 8.85 in lbs
 
**Set screws
D1/D2E
- Ø 10M3
Ø 10.1 - 12M4
Ø 12.1 - 30M5
Ø 30.1 - 58M8
Ø 58.1 - 95M10
Ø 95.1 - 130M12
Ø 130.1 - 170M16
Hubs with bore diameter <6mm delivered without keyway.

Details of pilot bored coupling hubs (DV)

It's critical that modifications of the hub are
machined concentrically and perpendiculart to the through bore.









EK1 hubs can be modified to customer specifcations.
The coupling hub may be shortened by dimension H.

Ordering Example

Ordering ExampleEK160A1924XX
Model    Special designation
only
(e.g. special bore
tolerance).
Series    
Type Elastomer insert    
Bore Ø D1 H7    
Bore Ø D2 H7    
All data is suject to change without notice.
Part Number
EK1/450/A/[28-60/1]/[28-60/1]
EK1/800/A/[32-80/1]/[32-80/1]
Part Number
Standard Unit Price
Minimum order quantityVolume Discount
Standard
Shipping Days
?
Allowable Torque Range
(N•m)
Shaft Bore Dia. (machined) D1
(mm)
Shaft Bore Dia. (machined) D2
(mm)
Outer Dia. A
(mm)
Overall Length W
(mm)
Body Material Max. Rotational Speed
(r/min)
Buffer Part Material Moment of Inertia
(kg・m2)

-

1 13 Days 500 to Less Than 1,0002228 ~ 60102126Aluminum8000Polyurethane0.0011

-

1 13 Days 500 to Less Than 1,0002932 ~ 80136.5162Steel4000Polyurethane0.012

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Basic information

Type Jaw Type

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