Bellow couplings / hub clamping / bellows: stainless steel / body: aluminium / MK2 / R+W ANTRIEBSELEMENTE (Part Numbers)

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Design
· Two clamping hubs concentrically mounted to flexible bellows

Material
· Bellows: high grade stainless steel
· Hubs: aluminium

Temperature range
· -30 °C to +100 °C (-22 °F to +212 °F)

Features
· Frictional connection
· For highly dynamic applications
· Low moment of inertia

Part Number

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Product specification
Part Numbers
Catalog

MK2 with Clamping Hub 0.5 - 10 Nm

Product Properties

Features

• for highly dynamic applications
• easy installation
• light weight and low moment of inertia

Material

• Bellows: high grade stainless steel
• Hubs: aluminium

Design

Two clamping hubs concentrically mounted to flexible bellows.

Drawing

Specification

SIZE			5			10			15		20			45		100
Rated torque	(Nm)	T_KN	0.5			1.0			1.5		2.0			4.5		10
Overall length	(mm)	A^-1	25	28	31	27	30	33	30	35	35	40	44	46	54	50	60
Outside diameter	(mm)	B	15			15			19		25			32		40
Fit length	(mm)	C	9			9			11		13			16		16
Inside diameter possible from Ø to Ø H7	(mm)	D_1/2	3-7			3-7			3-8		3-12.7			5-16		5-24
Fastening screw ISO 4762		E	M2			M2			M2.5		M3			M4		M4
Tightening torque of the fastening screw	(Nm)	E	0.43			0.43			0.85		2.3			4		4.5
Distance between centerlines	(mm)	F	4.5			4.5			6		8			10		15
Distance	(mm)	G	3			3			3.5		4			5		5
Moment of inertia	(gcm²)	J_ges	2.6	2.8	3	3	3.4	3.6	8.5	9.5	25	27	29	100	108	160	205
Approximate weight	(g)		9	9	9	9	10	11	22	24	36	38	40	74	78	120	130
Torsional stiffness	(Nm/rad)	C_T	280	210	170	510	380	320	750	700	1200	1300	1200	7000	5000	9050	8800
Axial	(mm)	Max. values	0.4	0.5	0.6	0.4	0.5	0.6	0.5	0.7	0.5	0.6	0.7	0.7	1	1	1.2
Lateral	(mm)		0.15	0.2	0.25	0.15	0.2	0.25	0.15	0.2	0.15	0.2	0.25	0.2	0.25	0.2	0.3
Angular	(degree)		1	1.5	2	1	1.5	2	1.5	1.5	1.5	1.5	2	1.5	2	1.5	2

Ordering Example

Ordering Example	MK2	5	25	4.76	5	XX
Model	•					Special designation only (e.g. special bore tolerance).
Size		•
Overall length mm			•
Bore D1 H7				•
Bore D2 H7					•

For custom features place an XX at the end of the part number and describe the special requirements (e.g. MK2 / 5 / 25 / 4.76 / 5 / XX; XX=finely balanced for 25,000 rpm)

Data to be displayed: 30; 45; 60

Part Number
MK2/5/25/[3-7/1]/[3-7/1]
MK2/5/28/[3-7/1]/[3-7/1]
MK2/5/31/[3-7/1]/[3-7/1]
MK2/10/27/[3-7/1]/[3-7/1]
MK2/10/30/[3-7/1]/[3-7/1]
MK2/10/33/[3-7/1]/[3-7/1]
MK2/15/30/[3-8/1]/[3-8/1]
MK2/15/35/[3-8/1]/[3-8/1]
MK2/20/35/[3-12/1]/[3-12/1]
MK2/20/40/[3-12/1]/[3-12/1]
MK2/20/44/[3-12/1]/[3-12/1]
MK2/45/46/[5-16/1]/[5-16/1]
MK2/45/54/[5-16/1]/[5-16/1]
MK2/100/50/[5-24/1]/[5-24/1]
MK2/100/60/[5-24/1]/[5-24/1]

Minimum order quantity	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)	Allowable Torque (Nm)	Allowable Lateral Misalignment (mm)	Allowable Angular Misalignment (deg)	Allowable Axial Clearance (±) (mm)	Moment of Inertia (kg･m²)
1	17 Days	0.05 to 1.00	3 ～ 7	3 ～ 7	15	25	0.43	0.15	1	0.4	0.0026
1	17 Days	0.05 to 1.00	3 ～ 7	3 ～ 7	15	28	0.43	0.2	1.5	0.5	0.0028
1	17 Days	0.05 to 1.00	3 ～ 7	3 ～ 7	15	31	0.43	0.25	2	0.6	0.003
1	17 Days	1.01 to 3.00	3 ～ 7	3 ～ 7	15	27	0.43	0.15	1	0.4	0.003
1	17 Days	1.01 to 3.00	3 ～ 7	3 ～ 7	15	30	0.43	0.2	1.5	0.5	0.0034
1	17 Days	1.01 to 3.00	3 ～ 7	3 ～ 7	15	33	0.43	0.25	2	0.6	0.0034
1	17 Days	1.01 to 3.00	3 ～ 8	3 ～ 8	19	30	0.85	0.15	1.5	0.5	0.0085
1	17 Days	1.01 to 3.00	3 ～ 8	3 ～ 8	19	35	0.85	0.2	1.5	0.7	0.0095
1	17 Days	1.01 to 3.00	3 ～ 12	3 ～ 12	25	35	2.3	0.15	1.5	0.5	0.025
1	17 Days	1.01 to 3.00	3 ～ 12	3 ～ 12	25	40	2.3	0.2	1.5	0.6	0.027
1	17 Days	1.01 to 3.00	3 ～ 12	3 ～ 12	25	44	2.3	0.25	2	0.7	0.029
1	17 Days	3.01 to 5.00	5 ～ 16	5 ～ 16	32	46	4	0.2	1.5	0.7	0.1
1	17 Days	3.01 to 5.00	5 ～ 16	5 ～ 16	32	54	4	0.25	2	1	0.108
1	17 Days	10.01 to 20.00	5 ～ 24	5 ～ 24	40	50	4.5	0.2	1.5	1	0.16
1	17 Days	10.01 to 20.00	5 ～ 24	5 ～ 24	40	60	4.5	0.3	2	1.2	0.205

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Basic information

Type	Bellows Type	Body Material	Aluminum	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

3.01 to 5.00

10.01 to 20.00
Clear
Shaft Bore Dia. (machined) D1(mm)
[3-24/1mm Unit(s)]
Clear
Shaft Bore Dia. (machined) D2(mm)
[3-24/1mm Unit(s)]
Clear
Outer Dia. A(mm)
15

19

25

32

40
Clear
Overall Length W(mm)
25

27

28

30

31

33

35

40

44

46

50

54

60
Clear
Allowable Torque(Nm)
0.43

0.85

2.3

4

4.5
Clear
Allowable Lateral Misalignment(mm)
0.15

0.2

0.25

0.3
Clear
Allowable Angular Misalignment(deg)
1

1.5

2
Clear
Type
- MK2
Clear