Helical slit couplings / body: aluminium, stainless steel / WKAK, WKAS, WKAS, WKXK, WKXS / ABP Antriebstechnik

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Multi-purpose use for backlash-free and angularly aligned transmission of rotary motions, high torsional stiffness, low restoring forces, vibration damping effect, optimum compensation of misalignments, no moving parts, produced from a single piece

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Product specification
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Catalog

Contents
- WKAK Ø12 / Ø14 / Ø16 / Ø19 / Ø25 / Ø30 Series
- WKAS Ø6,5 / Ø10 / Ø12 / Ø16 / Ø19 / Ø20 Series
- WKAS Ø25 / Ø30 Series
- WKXK Ø25 Series, WKXS Ø25 Series

WKAK Ø12 / Ø14 / Ø16 / Ø19 / Ø25 / Ø30 Series

Technical Information

Technical data		WKAK 1215	WKAK 1421	WKAK 1625	WKAK 1928	WKAK 2532	WKAK 3038
Max. speed	min^-1	8.000	6.000	6.000	6.000	6.000	6.000
Max. torque	Ncm	25	50	60	80	100	150
Max. offset off shafts
Radial	mm	± 0,15	± 0,2	± 0,2	± 0,25	± 0,35	± 0,35
Axial	mm	± 0,2	± 0,25	± 0,3	± 0,4	± 0,5	± 0,5
Angular	Grad	± 2	± 3	± 3,5	± 4	± 4	± 4
Torsion spring stiffness	Nm/rad	2,5	4,5	5,5	8	16	19
Radial spring stiffness	N/mm	55	22	30	36	45	60
Moment of inertia	gcm²	1	1,9	3,8	8,7	29	76
Max. clamping torque (M)	Ncm	30	50	50	120	150	150
Temperature range	°C	-30 to +150	-30 to +120	-30 to +150
Weight appr.	g	3,5	6,5	10	16	34	58
Material	Flange	Aluminium	Aluminium anodised

M = tightening torque of the clamping screw

Drawings and Bore Combinations

Part No. Example: WKAK 1215 02/04
(Series ØW d1/d2)
SO = special bores at extra charge

Part No. Example: WKAK 1421 02/03
(Series ØW d1/d2)
SO = special bores at extra charge

Part No. Example: WKAK 1625 05/06
(Series ØW d1/d2)
SO = special bores at extra charge

Part No. Example: WKAK 1928 06/06
(Series ØW d1/d2)
SO = special bores at extra charge

Part No. Example: WKAK 2532 06/08
(Series ØW d1/d2)
SO = special bores at extra charge

Part No. Example: WKAK 3038 10/12
(Series ØW d1/d2)
SO = special bores at extra charge

WKAS Ø6,5 / Ø10 / Ø12 / Ø16 / Ø19 / Ø20 Series

Technical Information

Technical data		WKAS 6508	WKAS 1015	WKAS 1218	WKAS 1622	WKAS 1922	WKAS 2019
Max. speed	min^-1	8.000	8.000	8.000	8.000	8.000	8.000
Max. torque	Ncm	2	15	25	40	60	60
Max. offset off shafts
Radial	mm	± 0,1	± 0,15	± 0,15	± 0,2	± 0,25	± 0,25
Axial	mm	± 0,15	± 0,2	± 0,25	± 0,3	± 0,4	± 0,4
Angular	Grad	± 2	± 2	± 2,5	± 3	± 3,5	± 3,5
Torsion spring stiffness	Nm/rad	0,55	2,2	2,8	5	9	9
Radial spring stiffness	N/mm	24	22	28	34	40	40
Moment of inertia	gcm²	0,02	0,34	0,83	3,2	6,7	6
Max. clamping torque (M)	Ncm	8	15	35	80	80	80
Temperature range	°C	-30 to +150
Weight appr.	g	0,5	2,4	4	9,5	13	12
Material	Flange	Aluminium, anodised			Aluminium

M = tightening torque of the clamping screw
Helix area free turned from Ø 5 mm

Drawings and Bore Combinations

Part No. Example: WKAS 6508 1,5/02
(Series ØW d1/d2)
SO = special bores at extra charge

Part No. Example: WKAS 1015 03/04
(Series ØW d1/d2)
SO = special bores at extra charge

Part No. Example: WKAS 1218 04/05
(Series ØW d1/d2)
SO = special bores at extra charge

Part No. Example: WKAS 1622 05/05
(Series ØW d1/d2)
SO = special bores at extra charge

Part No. Example: WKAS 1922 06/06
(Series ØW d1/d2)
SO = special bores at extra charge

Part No. Example: WKAS 2019 06/06
(Series ØW d1/d2)
SO = special bores at extra charge

WKAS Ø25 / Ø30 Series

Technical Information

Technical data		WKAS 2524	WKAS 2532	WKAS 3030	WKAS 3038
Max. speed	min^-1	8.000	8.000	8.000	8.000
Max. torque	Ncm	100	100	150	150
Max. offset off shafts
Radial	mm	± 0,3	± 0,3	± 0,3	± 0,3
Axial	mm	± 0,5	± 0,5	± 0,5	± 0,5
Angular	Grad	± 4	± 4	± 4	± 4
Torsion spring stiffness	Nm/rad	20	18	21	21
Radial spring stiffness	N/mm	60	50	60	60
Moment of inertia	gcm²	22,2	30	57	76
Max. clamping torque (M)	Ncm	120	120	120	120
Temperature range	°C	-30 to +150
Weight appr.	g	26	35	45	60
Material	Flange	Aluminium anodised

M = tightening torque of the clamping screw
Helix area free-turned

Drawings and Bore Combinations

WKAS 2524
Part No. Example: WKAS 2524 10/10
(Series ØW d1/d2)
SO = special bores at extra charge

WKAS 2532
Part No. Example: WKAS 2532 10/10
(Series ØW d1/d2)
SO = special bores at extra charge

WKAS 3030
Part No. Example: WKAS 3030 10/12
(Series ØW d1/d2)
SO = special bores at extra charge

WKAS 3038
Part No. Example: WKAS 3038 10/14
(Series ØW d1/d2)
SO = special bores at extra charge

WKXK Ø25 Series, WKXS Ø25 Series

Technical Information

Technical data		WKXK 2532	WKXS 2524
Max. speed	min^-1	6.000	8.000
Max. torque	Ncm	200	200
Max. offset off shafts
Radial	mm	± 0,35	± 0,3
Axial	mm	± 0,5	± 0,5
Angular	Grad	± 4	± 4
Torsion spring stiffness	Nm/rad	29	40
Radial spring stiffness	N/mm	150	250
Moment of inertia	gcm²	84	64
Max. clamping torque (M)	Ncm	150	120
Temperature range	°C	-30 to +180
Weight appr.	g	88	65
Material		Stainless steel 1.4104

M = tightening torque of the clamping screw
Helix area free-turned

WKXK 2532
Part No. Example: WKXK 2532 06/08
(Series ØW d1/d2)

WKXS 2524
Part No. Example: WKXS 2524 06/08
(Series ØW d1/d2)
SO = special bores at extra charge

Data to be displayed: 30; 45; 60

Part Number
WKAK 1421 03/04
WKAK 1421 04/04
WKAK 1928 05/05
WKAK 2532 06/06
WKAK 2532 08/08
WKAK 2532 08/10
WKAK 2532 10/10
WKAK 3038 10/12
WKAS 1622 04/05
WKAS 1922 08/08
WKAS 2524 10/10
WKAS 2532 06/06
WKAS 2532 06/10
WKXK 2532 06/06
WKXK 2532 08/08
WKXK 2532 10/10
WKXS 2524 10/10

Standard Unit Price	Minimum order quantity	Volume 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)	Feature	Body Material	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)	Moment of Inertia (g･cm²)
41.95 €	1	Available	3 Days	0.05 to 1.00	3	4	14	21	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Small / Heat Resistant / Clean Environment	Aluminum	0.5	6000	0.21 to 0.40	±0.25	±4	-30～150	0.4	2.9
41.95 €	1	Available	3 Days	0.05 to 1.00	4	4	14	21	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Small / Heat Resistant / Clean Environment	Aluminum	0.5	6000	0.21 to 0.40	±0.25	±4	-30～150	0.45	1.9
42.08 €	1	Available	3 Days	0.05 to 1.00	5	5	19	28	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1.2	6000	0.21 to 0.40	±0.25	±2.5	-30～150	0.4	8.7
43.13 €	1	Available	Same day Stock	0.05 to 1.00	6	6	25	32	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1.2	6000	0.21 to 0.40	±0.25	±2.5	-30～150	0.4	29
43.13 €	1	Available	3 Days	0.05 to 1.00	8	8	25	32	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1.2	6000	0.21 to 0.40	±0.25	±4	-30～150	0.4	29
43.13 €	1	Available	3 Days	0.05 to 1.00	8	10	25	32	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1.2	6000	0.21 to 0.40	±0.25	±4	-30～150	0.4	0.34
43.13 €	1	Available	5 Days	0.05 to 1.00	10	10	25	32	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1.2	6000	0.21 to 0.40	±0.25	±2.5	-30～150	0.4	8.7
53.24 €	1	Available	3 Days	1.01 to 3.00	10	12	30	38	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1.2	6000	0.21 to 0.40	±0.25	±4	-30～150	0.45	2.5
35.02 €	1	Available	3 Days	0.05 to 1.00	4	5	16	22	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Small / Heat Resistant / Clean Environment / Vacuum Environment	Aluminum	0.8	8000	0.02 to 0.2	±0.25	±4	-30～150	0.4	2.9
34.83 €	1	Available	3 Days	0.05 to 1.00	8	8	19	22	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Small / Heat Resistant / Clean Environment / Vacuum Environment	Aluminum	0.8	8000	0.02 to 0.2	±0.25	±4	-30～150	0.4	2.5
36.19 €	1	Available	3 Days	0.05 to 1.00	10	10	25	24	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Small / Heat Resistant / Clean Environment / Vacuum Environment	Aluminum	1.2	8000	0.21 to 0.40	±0.25	±4	-30～150	0.45	22.2
42.18 €	1	Available	3 Days	0.05 to 1.00	6	6	25	32	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1.2	8000	0.21 to 0.40	±0.25	±4	-30～150	0.4	2.1
42.18 €	1	Available	3 Days	0.05 to 1.00	6	10	25	32	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1.2	8000	0.21 to 0.40	±0.25	±4	-30～150	0.4	2.5
82.85 €	1	Available	4 Days	1.01 to 3.00	6	6	25	32	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Small / Heat Resistant / Clean Environment / Vacuum Environment	Stainless Steel	1.5	6000	0.21 to 0.40	±0.25	±4	-30～180	±0.4	84
82.85 €	1	Available	4 Days	1.01 to 3.00	8	8	25	32	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Small / Heat Resistant / Clean Environment / Vacuum Environment	Stainless Steel	1.5	6000	0.21 to 0.40	±0.25	±4	-30～180	±0.4	84
82.85 €	1	Available	4 Days	1.01 to 3.00	10	10	25	32	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Small / Heat Resistant / Clean Environment / Vacuum Environment	Stainless Steel	1.5	6000	0.21 to 0.40	±0.25	±4	-30～180	±0.4	84
70.05 €	1	Available	4 Days	1.01 to 3.00	10	10	25	24	High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Small / Heat Resistant / Clean Environment / Vacuum Environment	Stainless Steel	1.2	8000	0.21 to 0.40	±0.25	±4	-30～180	±0.4	64

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Basic information

Type	With Slit	Allowable Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Application	Standard / Servo Motor / Stepping Motor / Encoder
Max. Rotational Speed Range(r/min)	4,001 to 10,000

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Basic Attributes

Allowable Torque Range(N•m)
0.05 to 1.00

1.01 to 3.00
Clear
Shaft Bore Dia. (machined) D1(mm)
2

3

4

5

6

6.35

8

10

12

14
Clear
Shaft Bore Dia. (machined) D2(mm)
2

3

4

5

6

6.35

8

9.52

10

12

14
Clear
Outer Dia. A(mm)
10

12

14

16

19

25

30
Clear
Overall Length W(mm)
15

18

21

22

24

25

28

30

32

38
Clear
Feature
High Accuracy

High Durability

No Backlash

Low Moment of Inertia

Vibration Insulation

Small

Heat Resistant

Clean Environment

Vacuum Environment
Clear
Body Material
Stainless Steel

Aluminum
Clear
Allowable Torque(Nm)
0.15

0.25

0.5

0.8

1.2

1.5
Clear
Max. Rotational Speed(r/min)
6000

8000
Clear
Allowable Lateral Misalignment Range(mm)
0.02 to 0.2

0.21 to 0.40
Clear
Allowable Angular Misalignment(deg)
±1.3

±2

±2.5

±3

±3.5

±4

±5

±10
Clear
Moment of Inertia(g･cm²)
0.34

0.83

1.9

2.1

2.2

2.3

2.5

2.6

2.8

2.9

3.2

3.8

6.7

8.7

9.5

13.5

15.2

22.2

29

29.8

30

57

64

76

84
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Type
- WKAK 1421
- WKAK 1625
- WKAK 1928
- WKAK 2532
- WKAK 3038
- WKAS 1015
- WKAS 1218
- WKAS 1622
- WKAS 1922
- WKAS 2524
- WKAS 2532
- WKAS 3030
- WKAS 3038
- WKXK 2532
- WKXS 2524
Clear
Allowable Lateral Misalignment(mm)
±0.15

±0.2

±0.22

±0.25

±0.3

±0.30

±0.35

±0.50

±1.0

±2.5
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