Servo couplings / mounting selectable / 1 disc, 2 discs: steel / body: aluminium, steel, Ø 40

Servo couplings / mounting selectable / 1 disc, 2 discs: steel / body: aluminium, steel, Ø 40

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It has a compact size, and the high rigidity surface pressure and keyway can be selected.

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Technical Drawing - Claw Couplings

Couplings/High Rigidity Disc/O.D.40mm: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 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 installation and removal of Keyless Clamping Type couplings, see P.1079
TypeDisc TypeMain BodyDiscAccessory
Both Sides Keyless ClampingBoth Sides Keywayed BoreOne Side Keyless Clamping, One Side Keywayed BoreMaterialSurface TreatmentMaterial
CPSWSCPSWSKCPSWSMKDoubleEN 1.1191 Equiv.-EN 1.4310 Equiv.Locking Screw
Set Screw
CPSHS--Single
CPAWS--DoubleAluminumClear Anodize
CPAHS--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
CPSWSK40-10-16

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

Part Number:  

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Part Number
CPSHS40-[10,​12,​14,​15,​16]-[10,​12,​14,​15,​16]
CPSWS40-[10,​12,​14,​15,​16]-[10,​12,​14,​15,​16]
CPSWSK40-[10,​12,​14,​15,​16]-[10,​12,​14,​15,​16]
CPSWSMK40-[10,​12,​14,​15,​16]-[10,​12,​14,​15,​16]
Part NumberMinimum order quantityVolume Discount
Standard
Shipping Days
?
RoHSAllowable Misalignment Shaft Bore Dia. 1 d1 (or d)
(mm)
Shaft Bore Dia. 2 d2 (or d)
(mm)
Overall Length
(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 10Angular Misalignment / Axial Misalignment10 ~ 1610 ~ 1639.4High Torsional Rigidity / High Torque Type / Zero Backlash / Small[Steel] EN 1.1191 Equiv.8--+0.25/-0.255.48x10-51-fachBoth Ends Surface Pressure
1 7 Days 10Angular Misalignment / Eccentricity / Axial Misalignment10 ~ 1610 ~ 1653High Torsional Rigidity / High Torque Type / Zero Backlash / Small[Steel] EN 1.1191 Equiv.80.02 to 0.20.2+0.5/-0.57.43x10-51-fachBoth Ends Surface Pressure
1 7 Days 10Angular Misalignment / Eccentricity / Axial Misalignment10 ~ 1610 ~ 1647High Torsional Rigidity / High Torque Type / Zero Backlash / Small[Steel] EN 1.1191 Equiv.80.02 to 0.20.2+0.5/-0.57.73x10-5DoubleBoth Sides with Keyway Holes
1 7 Days 10Angular Misalignment / Eccentricity / Axial Misalignment10 ~ 1610 ~ 1650High Torsional Rigidity / High Torque Type / Zero Backlash / Small[Steel] EN 1.1191 Equiv.80.02 to 0.20.2+0.5/-0.57.58x10-5DoubleOne End with Surface Pressure, One End with Keyway Holes

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Technical Drawing - Claw Couplings

Couplings/High Rigidity Disc/O.D.40mm:Related Image
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 installation and removal of Keyless Clamping Type couplings, see P.1079
Open the technical drawing in the new window

Specification Tables - Claw Couplings

Part Numberd1, d2 Selectiond1,d2D1P.C.D.Locking Screw (Keyless Clamping)Unit Price
 Type DSizeTightening Torque
(N • m)
Both Sides Keyless ClampingBoth Sides Keywayed BoreOne Side Keyless Clamping, One Side Keywayed Bore
CPSWSCPAWSCPSWSKCPSWSMK
Double Disc Type
Both Sides Keyless Clamping
CPSWS (EN 1.1191 Equiv.)
CPAWS (Aluminum)
Both Sides Keywayed Bore
CPSWSK (EN 1.1191 Equiv.)
One Side Keyless Clamping,
One Side Keywayed Bore
CPSWSMK (EN 1.1191 Equiv.)
4010 12 14 15 1610,123223M4x183.5    
14,153827
163928
Part Numberd1, d2 Selectiond1,d2D1P.C.D.Locking Screw (Keyless Clamping)Unit Price
TypeDSizeTightening Torque (N • m)Both Sides Keyless Clamping
CPSHSCPAHS
Single Disc Type
Both Sides Keyless Clamping
CPSHS (EN 1.1191 Equiv.)
CPAHS (Aluminum)
4010 12 14 15 1610,123223M4x183.5  
14,153827
163928
■Double Disc Type
Part NumberAllowable 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 FactorMass (g)
TypeD
CPSWS40810.26300100007.43x10-5±0.51.5329
CPAWS62.65x10-5117
CPSWSK87.73x10-5332
CPSWSMK7.58x10-5331
Static torsional spring constant, inertia moment, and mass values are for cases of maximum shaft diameter.

■Single Disc Type
Part NumberAllowable 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)
TypeD
CPSHS408115000100005.48x10-5±0.251.5246
CPAHS61.96x10-588
Single Disc Type cannot tolerate lateral misalignment.

Basic information

Series Name Disc Type Application For Servo Motors Allowable Torque Range(N•m) 5.01 to 10.00
O.D. D(mm) 40 Max. Rotational Speed Range(r/min) 4,001 to 10,000 Category Coupling Main Body
Max. Rotational Speed(r/min) 10000 Allowable Angular Misalignment(deg) 1 Disc Material EN 1.4310 Equiv.

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.

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