Servo couplings / mounting selectable / 1 disc, 2 discs: steel / body: aluminium, steel Ø 65

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Back to the Category Shaft Couplings

Technical Drawing - Claw Couplings

Couplings/High Rigidity Disc/O.D. 65mm/Keyless/Clamping:Related Image

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Available dimensions and tolerances can be found under the tab More information.

Basic Properties (e.g., material, hardness, coating, tolerance) - Claw Couplings

The coupling with Ø35mm bore diameter conforms to servo motor shaft tolerance of Ø35+0.01.
Tolerances for d1 and d2 are values before slit machining.
The lateral, angular, and axial misalignment values shown are for each occurring individually. When multiple misalignments are occurring simultaneously, the allowable maximum value of each will be reduced to 1/2.
Shipped after center-aligned and assembled.
For the selection criteria and alignment procedures, see >> P.1061.
Keyless clamping fl ange has two screw holes for removal.
For the couplings with Ø20 or larger bores, the locking screw holes have integrated removal screw holes.
Use M6 screws into the screw holes for removal.
For installation and removal of Keyless Clamping Type couplings, see >> P.1079.

Type		Disc Type	Main Body		Disc	Accessory
Both Sides Keyless Clamping	One Side Keyless Clamping, One Side Keywayed Bore		Material	Surface Treatment	Material
CPSWN	CPSWMK	Double	EN 1.1191 Equiv.	-	EN 1.4310 Equiv.	Locking Screw Set Screw
CPSHN	CPSHMK	Single
CPAWN	-	Double	Aluminum	Clear Anodize
CPAHN	-	Single

Further specifications can be found under the tab More information.

Composition of a Product Code - Claw Couplings

Part Number	-	Shaft Bore Dia. d₁	-	Shaft Bore Dia. d₂
CPSWN65	-	35	-	20

General Information - Claw Couplings

Shaft coupling - compensation coupling - Oldham coupling - slit coupling - chain coupling - disc coupling - bellow coupling - product assortment

Shaft Coupling Selection Details

- Material: aluminum, aluminum alloy, steel, stainless steel, plastic

- Coupling buffer material: polyacetal, polyurethane, nylon, aluminum bronze, carbon fibre reinforced polymer (CFRP)

- Disc material: stainless steel, polyimide, carbon fibre (carbon)

- Fastening: hub clamping, half shell clamping, threaded pin clamping, clamping sleeve, keyway

- Design: slit coupling, disc coupling (servo coupling), Oldham coupling, dog coupling, jaw coupling, bellow coupling, metal bellow coupling, elastomer coupling

- ISO tolerances: H8

- Shaft diameter: 1 to 45 mm

- Outer diameter: 6 to 95 mm

- Length: 8.4 to 100 mm

- Offset: angle offset, radial offset, axial offset

Design Overview

Description/Basics

A shaft coupling, also called a compensating coupling, is generally used for the transmission of torque for mechanical engineering. Flexible shaft couplings (non-rigid) can compensate for lateral, axial and angular offsets (misalignment). Therefore, these are common connecting elements between motors and axles/shafts or even ball screws.

There are various types of designs, such as the jaw couplings, disc couplings (servo couplings), slit couplings, bellow couplings, Oldham couplings and many others, which are selected depending on the type of misalignment. You can determine which design is the right one for transmission in your application with the Coupling Selection Method available as a PDF.

When the shaft coupling is professionally installed, the transmission of rotational forces should be slip-free. To do this, the appropriate shaft coupling must be selected depending on the application. Here, it is important to observe the degree of misalignment, the maximum speed of rotation and the permissible torque of the compensation coupling and not to exceed these values during operation. If several misalignments occur at the same time, it is recommended to reduce the maximum value of the specified misalignment by approximately half.

The most commonly used elastomer coupling is the jaw coupling, which consists of a plastic buffer with damping properties. As a result, shocks and vibrations in a drive system can be damped, which protects adjacent components in the transmission of force. Our product range offers you alternative materials for the elastomers. These include among others aluminum bronze and carbon fibre-reinforced plastic.

The different shaft connections on the compensation couplings allow various connection variants for assembly. For this purpose, hub clamping, half shell clamping, slot clamping, threaded pin clamping, chip sleeve and keyways are available.
If a keyway is selected for a MISUMI shaft coupling, it is recommended obtaining the MISUMI machine key, as it is best to combine these.

A shaft coupling can be used for precise positioning. These are often combined together with slide screws or ball screws. A disc clutch (servo coupling) is suitable for this application, since it has a high torsional rigidity.

In addition to the standardized diameter of the shaft bore, MISUMI offers the option LDC and RDC, which allows the drill diameter to be adjusted to the shaft end in 0.1 mm increments.

Application Examples - Claw Couplings

Application example: shaft coupling - disc coupling with servo motor - disc coupling with ball screw drive - shaft clutch with servo motor - shaft clutch with ball screw drive

Shaft coupling with servo motor and ball screw
(1) Servo motor, (2) disc coupling (servo coupling), (3) ball screw

Application example: shaft coupling with encoder - shaft coupling with bearing housing - slit coupling with encoder - slit coupling with bearing housing -

Slit coupling with encoder
(1) Bearing with housing, (2) shaft coupling, (3) motor, (4) axles/shafts

Application example - Performance test stand with shaft coupling - Oldham coupling with engine - test stand with Oldham coupling

Engine test stand with Oldham coupling
(1) X-axis positioning stage, (2) performance test station, (3) shaft coupling, (4) brackets, L-shaped

Application example: synchronous pulley with shaft coupling - shaft coupling with motor and gearbox

Shaft coupling with motor and gearbox
(1) Motor, (2) Shaft coupling, (3) Conversion/Reducing gears, (4) Timing pulleys / Idlers

Industrial Applications

3D printer industry

Automotive industry

Pharmaceutical industry

Packaging industry

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Part Number
CPAHN65-[15,16,18,20,22,24,25,30,35]-[15,16,18,20,22,24,25,30,35]
CPAWN65-[15,16,18,20,22,24,25,30,35]-[15,16,18,20,22,24,25,30,35]
CPSHMK65-[15,16,17,18,19,20,22,24,25,30,35]-[15,16,17,18,19,20,22,24,25]
CPSHN65-[15,16,17,18,19,20,22,24,25,30,35]-[15,16,17,18,19,20,22,24,25,30,35]
CPSWMK65-[15,16,17,18,19,20,22,24,25,30,35]-[15,16,17,18,19,20,22,24,25]
CPSWN65-[15,16,17,18,19,20,22,24,25,30,35]-[15,16,17,18,19,20,22,24,25,30,35]

Minimum order quantity	Standard Shipping Days ?	RoHS	Allowable Misalignment	Allowable Torque Range (N•m)	Shaft Bore Dia. 1 d1 (or d) (mm)	Shaft Bore Dia. 2 d2 (or d) (mm)	Features	Body Material	Allowable Torque (Nm)	Allowable Lateral Misalignment Range (mm)	Allowable Lateral Misalignment (mm)	Allowable Axial Misalignment (mm)	Moment of Inertia (kg･m²)	Single/Double	Shaft Bore Shape
1	7 Days	10	Angular Misalignment / Axial Misalignment	-	15 ～ 35	15 ～ 35	High Torsional Rigidity / High Torque Type / Zero Backlash / Low Moment of Inertia	[Aluminum] Aluminum	-	-	-	+0.3/-0.3	1.61x10^-4	1-fach	Both Ends Surface Pressure
1	7 Days	10	Angular Misalignment / Eccentricity / Axial Misalignment	-	15 ～ 35	15 ～ 35	High Torsional Rigidity / High Torque Type / Zero Backlash / Low Moment of Inertia	[Aluminum] Aluminum	-	0.02 to 0.2	0.2	+0.6/-0.6	2.33x10^-4	Double	Both Ends Surface Pressure
1	7 Days	10	Angular Misalignment / Axial Misalignment	50.01 to 100.00	15 ～ 35	15 ～ 25	High Torsional Rigidity / High Torque Type / Zero Backlash	[Steel] EN 1.1191 Equiv.	60	-	-	+0.3/-0.3	3.70x10^-4	1-fach	One End with Surface Pressure, One End with Keyway Holes
1	7 Days	10	Angular Misalignment / Axial Misalignment	50.01 to 100.00	15 ～ 35	15 ～ 35	High Torsional Rigidity / High Torque Type / Zero Backlash	[Steel] EN 1.1191 Equiv.	60	-	-	+0.3/-0.3	4.53x10^-4	1-fach	Both Ends Surface Pressure
1	7 Days	10	Angular Misalignment / Eccentricity / Axial Misalignment	50.01 to 100.00	15 ～ 35	15 ～ 25	High Torsional Rigidity / High Torque Type / Zero Backlash	[Steel] EN 1.1191 Equiv.	60	0.02 to 0.2	0.2	+0.6/-0.6	5.70x10^-4	Double	One End with Surface Pressure, One End with Keyway Holes
1	7 Days	10	Angular Misalignment / Eccentricity / Axial Misalignment	50.01 to 100.00	15 ～ 35	15 ～ 35	High Torsional Rigidity / High Torque Type / Zero Backlash	[Steel] EN 1.1191 Equiv.	60	0.02 to 0.2	0.2	+0.6/-0.6	6.53x10^-4	Double	Both Ends Surface Pressure

Back to the Category Shaft Couplings

Technical Drawing - Claw Couplings

The coupling with Ø35mm bore diameter conforms to servo motor shaft tolerance of Ø35+0.01.
Tolerances for d1 and d2 are values before slit machining.
The lateral, angular, and axial misalignment values shown are for each occurring individually. When multiple misalignments are occurring simultaneously, the allowable maximum value of each will be reduced to 1/2.
Shipped after center-aligned and assembled.
For the selection criteria and alignment procedures, see >> P.1061.
Keyless clamping fl ange has two screw holes for removal.
    For the couplings with Ø20 or larger bores, the locking screw holes have integrated removal screw holes.
    Use M6 screws into the screw holes for removal.
    For installation and removal of Keyless Clamping Type couplings, see >> P.1079.
Open the technical drawing in the new window

Specification Tables - Claw Couplings

Part Number		d₁, d₂ (Keywayed bores are available up to Ø25)	d₁,d₂	L₁	L₂	D₁	P.C.D.	Locking Screw (Keyless Clamping)		Unit Price
Type	D							Size	Tightening Torque (N • m)	Both Sides Keyless Clamping		One Side Keyless Clamping, One Side Keywayed Bore
										CPSWN	CPAWN	CPSWMK
Double Disc Type Both Sides Keyless Clamping CPSWN (EN 1.1191 Equiv.) CPAWN (Aluminum) One Side Keyless Clamping, One Side Keywayed Bore CPSWMK	65	15 16 17 18 19 20 22 24 25 30 35 For CPAWN, * is not available.	15	26.5	5.5 (EN 1.1191 Equiv.) 5.0 (Aluminum)	41	29	M5x25	6
			16				30
			17				32
			18, 19			44	35
			20, 22	22		48	37	M5x22
			24, 25			53	42
			30			58	45
			35			63	51

Part Number		d₁, d₂ (Keywayed bores are available up to Ø25)	d₁,d₂	L₁	L₂	D₁	P.C.D.	Locking Screw (Keyless Clamping)		Unit Price
Type	D							Size	Tightening Torque (N • m)	Both Sides Keyless Clamping		One Side Keyless Clamping, One Side Keywayed Bore
										CPSHN	CPAHN	CPSHMK
Single Disc Type Both Sides Keyless Clamping CPSHN (EN 1.1191 Equiv.) CPAHN (Aluminum) One Side Keyless Clamping, One Side Keywayed Bore CPSHMK	65	15 16 17 18 19 20 22 24 25 30 35 For CPAHN, * is not available.	15	26.5	5.5 (EN 1.1191 Equiv.) 5.0 (Aluminum)	41	29	M5x25	6
			16				30
			17				32
			18, 19			44	35
			20, 22	22		48	37	M5x22
			24, 25			53	42
			30			58	45
			35			63	51

■Double Disc Type

Part Number		d₁,d₂	Allowable Torque (N • m)	Angular Misalignment (°)	Lateral Misalignment (mm)	Static Torsional Spring Constant (N • m/rad)	Max. Rotational Speed (r/min)	Moment of Inertia (kg • m²)	Allowable Axial Misalignment (mm)	Compensation Factor coefficient	Mass (g)
Type	D
CPSWN	65	15~19	60	0.6	0.2	58000	8000	6.53x10^-4	±0.6	1.5	984
		20~35	80
CPAWN		15, 16, 18	20			47000		2.33x10^-4			351
		20~35	40
CPSWMK		15~35	60			58000		5.70x10^-4			934

Static torsional spring constant, inertia moment, and mass values are for cases of maximum shaft diameter.

■Single Disc Type

Part Number		d₁,d₂	Allowable Torque (N • m)	Angular Misalignment (°)	Static Torsional Spring Constant (N • m/rad)	Max. Rotational Speed (r/min)	Moment of Inertia (kg • m²)	Allowable Axial Misalignment (mm)	Compensation Factor coefficient	Mass (g)
Type	D
CPSHN	65	15~19	60	0.6	120000	8000	4.53x10^-4	±0.3	1.5	695
		20~35	80
CPAHN		15, 16, 18	20		98000		1.61x10^-4			248
		20~35	40
CPSHMK		15~35	60		120000		3.70x10^-4			645

Single Disc Type cannot tolerate lateral misalignment.

Products homepage

Basic information

Series Name	Disc Type	Application	For Servo Motors	O.D. D(mm)	65
Max. Rotational Speed Range(r/min)	4,001 to 10,000	Category	Coupling Main Body	Max. Rotational Speed(r/min)	8000
Allowable Angular Misalignment(deg)	0.6	Disc Material	EN 1.4310 Equiv.

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Basic Attributes

Allowable Misalignment
- Angular Misalignment
- Eccentricity
- Axial Misalignment
Clear
Allowable Torque Range(N•m)
50.01 to 100.00
Clear
Shaft Bore Dia. 1 d1 (or d)(mm)
15

16

17

18

19

20

22

24

25

30

35
Clear
Shaft Bore Dia. 2 d2 (or d)(mm)
15

16

17

18

19

20

22

24

25

30

35
Clear
Features
High Torsional Rigidity

High Torque Type

Zero Backlash

Low Moment of Inertia
Clear
Body Material
- Steel
  - EN 1.1191 Equiv.
- Aluminum
  - Aluminum
Clear
Allowable Torque(Nm)
60
Clear
Allowable Lateral Misalignment Range(mm)
0.02 to 0.2
Clear
Allowable Lateral Misalignment(mm)
0.2
Clear
Single/Double
- 1-fach
- Double
Clear
Shaft Bore Shape
Both Ends Surface Pressure

One End with Surface Pressure, One End with Keyway Holes
Clear
Type
- CPAHN65
- CPAWN65
- CPSHMK65
- CPSHN65
- CPSWMK65
- CPSWN65
Clear
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Optional Attributes

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently Asked Questions (FAQ)

Question:
Can a claw coupling compensate for an angle?: Answer:
As a rule, a claw coupling can compensate for an angular offset. How large this angle may be depends on the respective claw coupling. Here, it is recommended to always refer to the technical information in the data sheet. If there are other misalignments, there is a possibility that the amount of the compensation will be reduced depending on the coupling type. There are notes on this for the shaft couplings.
Question:
Which coupling is suitable for a servo motor?: Answer:
A disc coupling can be used with a servo motor application. These have a good torsion rigidity, which is necessary for applications with alternating direction of rotation. These couplings are often used in positioning applications. Here, it is recommended to assume the peak torque of the servo motor and to use the compensation factor found on the product page as safety. The permissible torque of the shaft coupling should be higher than the determined value.
Question:
What temperature can an elastomeric clutch withstand?: Answer:
The temperatures that a claw coupling or Oldham coupling with elastomer buffer can withstand depend on the material used. The permissible temperature is noted for the respective product. However, when designing the shaft coupling, the temperature correction factor should be taken into account in the calculation. You can find it in the shaft coupling selection procedure as a PDF.
Question:
Which coupling compensates for a high angular offset?: Answer:
A metal bellow coupling can be a possible variant in the case of a high angle offset. This variant of a shaft coupling can compensate an angular offset of up to approx. 2°. This is made possible by the flexible bellow coupling.