Disc Couplings High Regidity Single Disc, Clamping Type

Brand :

MISUMI

Caution

Product Description

Economy High Rigidity Single Disc Coupling

High torqueZero backlashHigh speed

- Exceptional high torque capacity for robust performance in demanding applications

- Designed for precise torque transmission with zero backlash

- Capable of handling high rotational speeds up to specified RPM

- Easy clamping type installation for quick and secure setup

- Suitable for a wide range of temperatures

Economy High Rigidity Single Disc Coupling

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

coupling Product Overview

The disc coupling is composed of several groups of discs (stainless steel thin plates) that are interlaced with two halves of the coupling with bolts, and each group of discs is formed by stacking several pieces.
The disc coupling relies on the elastic deformation of the disc to compensate for the relative displacement of the connected two shafts, which is a high-performance flexible coupling with strong metal components.
It is characterized by compact structure, no backlash, high strength, long service life, no rotation clearance, no influence of temperature and oil pollution, acid resistance, alkali resistance and corrosion resistance.
Applicable motor types: recommended for servo motors, stepping motors and general motors.

coupling Product Feature

■ Main characteristics of disc coupling
1. Strong ability to compensate for misalignment between two axes. Compared with tooth coupling, angular displacement can be doubled. In case of radial displacement, reaction force is small, flexibility is large, and certain axial, radial and angular displacements are allowed.
2. It has obvious shock absorption, no noise and no wear.
3. Suitable for working in high temperature (-80+300) and harsh environment, and operate safely under shock and vibration conditions.
4. High transmission efficiency, up to 99.86%. Especially suitable for medium, high speed and high power transmission.
5. Simple structure, light weight, small in size and convenient assembly and disassembly. It can be assembled and disassembled without moving the machine (models with intermediate shaft), and requiring no lubrication.
6. It can accurately transmit the rotational speed without slip, and can be used for transmission of precision machinery

Dimensional coupling Drawing

The rigidity is comparable to the high rigidity SCPW of previous products, and the cost is greatly reduced. The surface has not been oxidized, which may be rough.

【Economic type】Disc type coupling High flexibility clamping type (Single disc type) Servo motor applicable type: Related image

・Material Table

Type	Parts	[ M ] Material	[ S ] Surface Treatment	[ A ] Accessories
C－SCPS	Body	Aluminum	－	Hex socket bolt (Clamping bolt)
	Disc	Stainless Steel	－
	Lock Bolt	SCM435	Ferroferric Oxide Protective Film

coupling Specification Table

Please order after selecting part number and parameters according to the selection steps to . 【Economic type】Disc type coupling High flexibility clamping type (Single disc type) Servo motor applicable type: Related image

Please specify the shaft bore dia. within the range of d₁≤d₂.

Part Number ( Type· No.)	－	d₁	－	d₂
C－SCPS21	－	6	－	8

Part Number		d_1, d₂ selection (But d₁≤d₂)																	D	d₃	L	ℓ	F	A	Fastening Bolt
Type	No.	d_1, d₂ selection (But d₁≤d₂)																	D	d₃	L	ℓ	F	A	M	Tightening torque (N·m)
C－SCPS	16	4	5	6															16.6	6.5	16.6	7.2	3	5.3	M2.6	1.0
	21	4	5	6		8													21	9.5	16.7	7	3.5	7	M2.6	1.2
	28			6	6.35	8	10												28	12	21.5	9	4	9.5	M3	1.7
	34			6	6.35	8	10	11	12	14									34	15	23.3	9.8	5	12	M3	1.7
	46					8	10	11	12	14	15	16	17	19					46	22	29.8	12.6	6	16.5	M4	4.1
	55								12	14	15	16	17	19	20	22	24	25	54.5	26	37.2	16	7	20.5	M5	8.2

■Characteristic Value

Part Number		Allowable torque (N·m)	Allowable Angular Misalignment (°)	Static torsional stiffness (N·m/rad)	Maximum Rotational Speed (r/min)	Moment of inertia (kg·m²)	Allowable axial amplitude (mm)	Compensation coefficient	Weight (g)
Type	No.
C－SCPS	16	0.5	1.0	1000	10000	3.16×10^－7	±0.10	1.5	8
	21	1.0		1700		7.90×10^－7			12
	28	1.5	1.2	6000		3.24×10^－6			30
	34	4.0	1.5	8000		7.60×10^－6			45
	46	10.0		20000		3.23×10^－5	±0.15		105
	55	25.0		33000		8.19×10^－5			180

[ NG ]Lateral misalignment is not allowed for single disc type.
[ ! ]Lateral misalignment, angular misalignment and axial amplitude are all single allowable values. If there are multiple deviations at the same time, the allowable value of each deviation will be reduced to 1/2 of the original value.

■Shaft slip torque (N·m)
[ ! ]When the shaft slip torque is less than the allowable torque, please use it below the shaft slip torque.

Part Number		d₁, d₂
Type	No.	4	5	6	6.35	8	10	11	12	14	15	16	17	19	20	22	24	25
C－SCPS	16	0.5	0.5	0.5	－	－	－	－	－	－	－	－	－	－	－	－	－	－
	21	1.0	1.0	1.0	－	1.0	－	－	－	－	－	－	－	－	－	－	－	－
	28	－	－	1.5	1.5	1.5	1.5	－	－	－	－	－	－	－	－	－	－	－
	34	－	－	2.5	2.5	4.0	4.0	4.0	4.0	4.0	－	－	－	－	－	－	－	－
	46	－	－	－	－	6.0	6.0	8.0	8.0	8.0	8.0	10	10	10	－	－	－	－
	55	－	－	－	－	－	－	－	16	16	19	25	25	25	25	25	25	25

coupling Precautions

■ Calibration and adjustment
1. The coupling allows axis deviation, and transmits rotation angle and torque, but when the axis deviation exceeds the allowable value, vibration will occur or the service life will be drastically reduced.
Be sure to make calibration and adjustment.
2. Axis deviation includes lateral misalignment (parallel error of two axes), angular misalignment (angular error of two axes) and axial amplitude (axial movement of shaft).
Please calibrate and adjust the shaft to ensure that the axis deviation is below the allowable value recorded in the dimension and performance table of each product.
3. The allowable value of axis deviation recorded in the dimension and performance table refers to the situation when either lateral misalignment, angular misalignment or axial amplitude occurs alone. When more than two axis deviations occur at the same time, the corresponding allowable values are halved respectively.
4. Axis deviation not only occurs when assembling to the device, but also is caused by vibration, thermal expansion and bearing wear in operation. Therefore, it is recommended to set the axis deviation below 1/3 of the allowable value.

Example of Use coupling

(Economic type) Disc type coupling High flexibility clamping type (Double disc type) Servo motor applicable type Example of use

Use example of coupling 1: motor×gear box

Use example of coupling 2: motor×ball screw

Use example of coupling 3: motor×encoder

Use example of coupling 4: motor×measuring tester

coupling Usage Method

■Mounting method
STEP1 Insert the coupling
Confirm that the clamping bolt has been unscrewed, and then remove the dust, foreign matter and oil from the shaft and coupling bore.
Then, when inserting the coupling into the shaft, please be careful not to put the disc under excessive stress such as compression or tension.
STEP2 Use fixture to adjust
Please use fixture to adjust and fix the concentricity of the left and right hubs of the coupling with high accuracy.
STEP3 Simple lateral misalignment and angular misalignment confirmation
Under the condition of unscrewed bolts, make the coupling slide axially and confirm its smooth movement.
Then, rotate the coupling to make sure it moves smoothly.
Lateral misalignment is not allowed for single disc type coupling, so carry out positioning securely.

Simple lateral misalignment confirmation		Simple angular misalignment confirmation

STEP4 Installation
Please adjust the shaft insertion amount according to the dimension ℓ in the product catalog, and use a torque wrench to tighten with the specified torque.
＊ If the specified torque cannot be reached once, please cross fasten the left and right clamps twice or three times.