Bellow couplings / grub screw clamping, hub clamping / bellows: stainless steel / body: stainless steel / BKXK, BKXS, BKXKV, BKXSV, BKXSY / ABP Antriebstechnik

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Backlash-free and angularly aligned transmission, optimum compensation of misalignments, very high torsional stiffness, low restoring forces, vibration damping effect, stainless steel bellow

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Product specification
Part Numbers
Catalog

Contents
- BKXK Ø16 / Ø21 / Ø24 Series
- BKXK Ø25 / Ø33 / Ø40 Series, BKXS Ø15 Series
- BKXS Ø19 / Ø20 / Ø25 Series
- BKXKV Ø16 Series, BKXSV Ø15 Series, BKXSY Ø20 Series

BKXK Ø16 / Ø21 / Ø24 Series

Technical Information

Technical data		BKXK 1622	BKXK 1624	BKXK 1627	BKXK 2129	BKXK 2135	BKXK 2429	BKXK 2435
Max. speed	min^-1	10.000	10.000	10.000	10.000	10.000	10.000	10.000
Max. torque	Ncm	40	40	40	120	100	120	100
Max. offset off shafts
Radial	mm	± 0,2	± 0,25	± 0,3	± 0,25	± 0,3	± 0,25	± 0,3
Axial	mm	± 0,4	± 0,45	± 0,5	± 0,4	± 0,5	± 0,4	± 0,5
Angular	Grad	± 3	± 4	± 4	± 4	± 4	± 4	± 4
Torsion spring stiffness	Nm/rad	90	85	70	150	140	150	140
Radial spring stiffness	N/mm	40	20	15	25	10	25	10
Moment of inertia	gcm²	2,1	2,2	2,6	9	9,5	15	15,2
Max. clamping torque (M)	Ncm	50	50	50	100	100	100	100
Temperature range	°C	-30 to +120			-40 to +140
Weight appr.	g	6	6,5	7	15	16	17	18
Material	Flange	Aluminium, anodised
Material	Bellow	Stainless steel

M = tightening torque of the clamping screw

Drawings and Bore Combinations

Part No. Example: BKXK 1622 05/06
(Series ØW d1/d2)

Part No. Example: BKXK 2129 63/08
(Series ØW d1/d2)

Part No. Example: BKXK 2429 08/10
(Series ØW d1/d2)

BKXK Ø25 / Ø33 / Ø40 Series, BKXS Ø15 Series

Technical Information

Technical data		BKXK 2530	BKXK 2535	BKXK 3340	BKXK 4048	BKXS 1520	BKXS 1522	BKXS 1525
Max. speed	min^-1	10.000	10.000	15.000	5.000	10.000	10.000	10.000
Max. torque	Ncm	200	200	500	1000	40	40	40
Max. offset off shafts
Radial	mm	± 0,3	± 0,35	± 0,3	± 0,3	± 0,2	± 0,25	± 0,3
Axial	mm	± 0,4	± 0,45	± 0,5	± 0,5	± 0,4	± 0,45	± 0,5
Angular	Grad	± 4	± 4	± 3	± 1,5	± 3	± 4	± 4
Torsion spring stiffness	Nm/rad	220	183	750	350	90	85	70
Radial spring stiffness	N/mm	45	17,8	100	150	40	20	15
Moment of inertia	gcm²	29,8	31	82	92	2	2,1	2,3
Max. clamping torque (M)	Ncm	100	100	4	8	70	70	70
Temperature range	°C	-40 to +140
Weight appr.	g	20	22	60*	22*	6	6,5	7
Material	Flange	Aluminium, anodised
Material	Bellow	Stainless steel

* dependent on Ø
M = tightening torque of the clamping screw

Drawings and Bore Combinations

Part No. Example: BKXK 2530 10/12
(Series ØW d1/d2)

Part No. Example: BKXK 3340 10/12
(Series ØW d1/d2)

Part No. Example: BKXK 4048 16/18
(Series ØW d1/d2)

Part No. Example: BKXS 1520 05/06
(Series ØW d1/d2)

BKXS Ø19 / Ø20 / Ø25 Series

Technical Information

Technical data		BKXS 1924	BKXS 1929	BKXS 2029	BKXS 2035	BKXS 2526	BKXS 2531
Max. speed	min^-1	10.000	10.000	10.000	10.000	10.000	10.000
Max. torque	Ncm	120	100	120	100	200	200
Max. offset off shafts
Radial	mm	± 0,25	± 0,3	± 0,25	± 0,3	± 0,3	± 0,35
Axial	mm	± 0,4	± 0,5	± 0,4	± 0,5	± 0,4	± 0,45
Angular	Grad	± 4	± 4	± 4	± 4	± 4	± 4
Torsion spring stiffness	Nm/rad	150	140	150	140	220	183
Radial spring stiffness	N/mm	25	10	25	10	45	17,8
Moment of inertia	gcm²	7	9	8	9	19	20
Max. clamping torque (M)	Ncm	80	80	150	150	150	150
Temperature range	°C	-40 to +140
Weight appr.	g	10	11	15	16	17,5	18
Material	Flange	Aluminium, anodised
Material	Bellow	Stainless steel

M = tightening torque of the clamping screw

Drawings and Bore Combinations

Part No. Example: BKXS 1924 06/63
(Series ØW d1/d2)

Part No. Example: BKXS 2029 63/08
(Series ØW d1/d2)

Part No. Example: BKXS 2526 12/14
(Series ØW d1/d2)

BKXKV Ø16 Series, BKXSV Ø15 Series, BKXSY Ø20 Series

Technical Information

Technical data		BKXKV1624	BKXKV1627	BKXSV1522	BKXSV1525	BKXSY2029	BKXSY2035
Max. speed	min^-1	10.000	10.000	10.000	10.000	10.000	10.000
Max. torque	Ncm	100	100	100	100	120	100
Max. offset off shafts
Radial	mm	± 0,15	± 0,2	± 0,15	± 0,2	± 0,25	± 0,3
Axial	mm	± 0,4	± 0,45	± 0,4	± 0,45	± 0,4	± 0,5
Angular	Grad	± 1	± 1,5	± 1	± 1,5	± 4	± 4
Torsion spring stiffness	Nm/rad	115	110	115	110	150	140
Radial spring stiffness	N/mm	90	46	90	46	25	10
Moment of inertia	gcm²	2,5	2,9	2,5	2,9	18	20
Max. clamping torque (M)	Ncm	50	50	50	50	70	70
Temperature range	°C	-40 to +140				-40 to +200
Weight appr.	g	7	7	6,5	7	31,5	33
Material	Flange	Aluminium, anodised				Stainless steel 1.4404
Material	Bellow	Stainless steel 1.4571

M = tightening torque of the clamping screw
Through V4A 1.4404 stainless steel quality increased resistance to chlorides, sea water, fuels, toluene, aromatic and non-aromatic hydrocarbons,
alcohols, glycols, solvents and many chemicals.

Drawings and Bore Combinations

Part No. Example: BKXKV1624 05/06
(Series ØW d1/d2)

Part No. Example: BKXSV1522 05/06
(Series ØW d1/d2)

Part No. Example: BKXSY2029 06/10
(Series ØW d1/d2)

Data to be displayed: 30; 45; 60

Part Number
BKXK 2129 63/63
BKXK 2135 08/10
BKXS 1520 04/04
BKXS 2035 06/63

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)	Max. Rotational Speed Range (r/min)	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)
45.01 €	1	Available	3 Days	1.01 to 3.00	6.35	6.35	21	29	4,001 to 10,000	High Torsional Rigidity / High Torque / High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1	10000	0.21 to 0.40	±2.5	±10	-30～120	2.5	9
45.64 €	1	Available	3 Days	0.05 to 1.00	8	10	21	35	4,001 to 10,000	High Torsional Rigidity / High Torque / High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1	10000	0.21 to 0.40	±2.5	±10	-30～120	2.5	2.1
40.01 €	1	Available	3 Days	0.05 to 1.00	4	4	15	20	4,001 to 10,000	High Torsional Rigidity / High Torque / High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Small / Heat Resistant / Clean Environment	Aluminum	0.7	10000	0.02 to 0.2	±2.5	±10	-30～120	2.5	0.83
42.49 €	1	Available	3 Days	1.01 to 3.00	6	6.35	20	35	4,001 to 10,000	High Torsional Rigidity / High Torque / High Accuracy / High Durability / No Backlash / Low Moment of Inertia / Vibration Insulation / Heat Resistant / Clean Environment	Aluminum	1.5	10000	0.21 to 0.40	±2.5	±10	-30～120	2.5	15.2

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Basic information

Type	Bellows Type	Allowable Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Application	Standard / Servo Motor / Encoder
Bellows Part Material	Stainless Steel

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Basic Attributes

Allowable Torque Range(N•m)
0.05 to 1.00

1.01 to 3.00

5.01 to 10.00
Clear
Shaft Bore Dia. (machined) D1(mm)
2

3

4

5

6

6.35

8

9.52

10

12

14

16
Clear
Shaft Bore Dia. (machined) D2(mm)
2

3

4

5

6

6.35

8

9.52

10

12

14

16

18

20

22
Clear
Outer Dia. A(mm)
15

16

19

20

21

24

25

40
Clear
Overall Length W(mm)
20

22

24

25

26

27

29

30

31

35

48
Clear
Max. Rotational Speed Range(r/min)
4,001 to 10,000

10,001 to 78,000
Clear
Feature
High Torsional Rigidity

High Torque

High Accuracy

High Durability

No Backlash

Low Moment of Inertia

Vibration Insulation

Small

Heat Resistant

Clean Environment
Clear
Body Material
Stainless Steel

Aluminum
Clear
Allowable Torque(Nm)
0.5

0.7

0.8

1

1.5

8
Clear
Max. Rotational Speed(r/min)
5000

10000
Clear
Allowable Lateral Misalignment Range(mm)
0.02 to 0.2

0.21 to 0.40
Clear
Allowable Angular Misalignment(deg)
±1

±1.3

±1.5

±2.5

±3

±3.5

±4

±5

±10

±12

±15
Clear
Moment of Inertia(g･cm²)
0.3

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

7

8

8.7

9

9.5

13.5

15

15.2

18

19

20

22.2

29.8

31

92
Clear
Type
- BKXK 1622
- BKXK 1624
- BKXK 1627
- BKXK 2129
- BKXK 2135
- BKXK 2429
- BKXK 2435
- BKXK 2530
- BKXK 2535
- BKXK 4048
- BKXKY1624
- BKXKY1627
- BKXS 1520
- BKXS 1522
- BKXS 1525
- BKXS 1924
- BKXS 1929
- BKXS 2029
- BKXS 2035
- BKXS 2526
- BKXS 2531
- BKXSY1522
- BKXSY1525
- BKXSY2029
- BKXSY2035
Clear
Allowable Lateral Misalignment(mm)
±0.1

±0.15

±0.20

±0.2

±0.22

±0.25

±0.3

±0.30

±0.35

±0.50

±1.0

±1.5

±2

±2.5

±3

±5
Clear
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