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Product Detail
Features
type
Shaft Bore Dia. 1 d1 (or d)
Shaft Bore Dia. 2 d2 (or d)
O.D.
Overall Length
Allowable Torque Range
Allowable Torque
Allowable Lateral Misalignment
Allowable Lateral Misalignment Range
Shaft Bore Shape
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type
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Shaft Bore Dia. 1 d1 (or d)(Ø)
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Shaft Bore Dia. 2 d2 (or d)(Ø)
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O.D.(Ø)
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Overall Length(mm)
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Allowable Torque Range(N•m)
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Allowable Torque(N•m)
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Allowable Lateral Misalignment(mm)
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Allowable Lateral Misalignment Range(mm)
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Shaft Bore Shape
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Disc Couplings High Flexible, Double Disc (GCPW33-14-14)
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MiSUMi Economy
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Product DetailProduct Description
· GCPSW Model Disc Couplings High Flexible, Double Disc.
· Body material: Aluminum alloy with Alumite Treatment surface.
· Spacer disc material is Stainless steel with
· Fastening Bolt, Set Screw: Steel SCM435.
· Fastening surface treatment with Ferro ferric Oxide Protective Film.
· Shaft Fastening Method: Lock bolt clamp and screw type.
· GCPSW Model Body size: 20 to 39.
· Allowable Angular misalignment 2 degree.
· Maximum Rotational Speed: 10,000 (r/min).
· Maximum Rotational Speed Range: 4001 ~ 10000 (r/min).
· Application : For Servo Motors / Stepping Motor.
Economy High Flexible Double Disc Coupling
High flexibilityZero backlashDouble disc
- Exceptional flexibility for compensating axial, radial, and angular misalignments
- High transmission efficiency up to specified percentage.
- Suitable for high-speed applications with a maximum rotational speed up to specified RPM
- Lightweight and compact design allows for easy installation
- Ideal for medium to high power transmission
MISUMI Standard
Cheaper Price
Product Variety
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.
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
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
Universal type with excellent flexibility. The price is the lowest among MISUMI diaphragm Couplings suitable for servo motors.
| TYPE |  Material |  Surface Treatment |  Accessories | ||||||
| Standard Hole | d1 (One side) | d2 (One side) | d1, d2 (Both sides) | Body | Disc | Fastening Bolt, Set Screw | Body | Fastening Bolt, Set Screw | |
| GCPW | GCPWLK | GCPWRK | GCPWWK | Aluminum | Stainless Steel | SCM435 | Alumite Treatment | Ferroferric Oxide Protective Film | Fastening Bolt |
| GCPSW | GCPSWLK | GCPSWRK | GCPSWWK | Set Screw | |||||
Coupling Specifications Overview
Specification Table
Please order after selecting part number and parameters according to the selection steps
to 
. Please specify the shaft bore dia. within the range of d1≤d2.
d1 and d2＊marked products without keyway hole.
■Characteristic Value
Static torsional stiffness, moment of inertia and weight are the values at the maximum shaft dia..
■Shaft slip torque (N·m)
When the shaft slip torque is less than the allowable torque, please use it below the shaft slip torque.
Please order after selecting part number and parameters according to the selection steps
to 
. Please specify the shaft bore dia. within the range of d1≤d2.Part Number (Type· D) | － |  d1 | － | d2 |
| GCPW29 | － | 10 | － | 14 |
| Part Number | d1, d2 selection (But d1≤d2) | d3 | L | R | F1 | F2 | A | Fastening Bolt | Set Screw | |||||||||||||||
| Type | D | M | Tightening Torque | M | Tightening Torque | |||||||||||||||||||
| (N·m) | (N·m) | |||||||||||||||||||||||
| Clamping type GCPW GCPWLK GCPWRK GCPWWK | Set Screw type GCPSW GCPSWLK GCPSWRK GCPSWWK | 20 | ＊4 | ＊5 | 6 | 6.35 | 8 | 8.5 | 28.8 | 11 | 3.5 | 5.5 | 6.4 | M2.5 | 1.0 | M3 | 0.7 | |||||||
| 26 | ＊5 | 6 | 6.35 | 8 | 10 | 11 | 11.5 | 34.1 | 11.9 | 3.5 | 5.5 | 9 | ||||||||||||
| 29 | ＊5 | 6 | 6.35 | 8 | 10 | 11 | 12 | 14 | 14.5 | 34.3 | 11.9 | 3.5 | 5.5 | 10.5 | M4 | 1.7 | ||||||||
| 33 | 6 | 8 | 10 | 11 | 12 | 14 | 15 | 16 | 16.5 | 40 | 13 | 4 | 6.5 | 12 | M3 | 1.5 | ||||||||
| 39 | 8 | 10 | 11 | 12 | 14 | 15 | 16 | 18 | 19 | 49.4 | 16 | 4.75 | 8 | 14 | M4 | 3.5 | M5 | 4.0 | ||||||
d1 and d2＊marked products without keyway hole.■Characteristic Value
| Part Number | Allowable torque (N·m) | Allowable angle (°) | Allowable lateral misalignment (mm) | Static torsional rigidity (N·m/rad) | Maximum speed (r/min) | Moment of inertia (kg·m2) | Allowable axial amplitude (mm) | Compensation coefficient | Weight (g) | |||
| Type | D | GCPW | GCPSW | |||||||||
| GCPW GCPWLK GCPWRK GCPWWK | GCPSW GCPSWLK GCPSWRK GCPSWWK | 20 | 1 | 2 | 0.1 | 550 | 10000 | 1.1×10－6 | ±0.20 | 2 | 19 | 19 |
| 26 | 2 | 0.15 | 700 | 3.3×10－6 | ±0.20 | 31 | 33 | |||||
| 29 | 3 | 0.15 | 1200 | 5.5×10－6 | ±0.30 | 43 | 44 | |||||
| 33 | 5 | 0.2 | 1500 | 1.1×10－5 | ±0.40 | 60 | 65 | |||||
| 39 | 8 | 0.25 | 3350 | 2.7×10－5 | ±0.50 | 113 | 118 | |||||
Static torsional stiffness, moment of inertia and weight are the values at the maximum shaft dia..■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 | D | 4 | 5 | 6 | 6.35 | 8 | 10 | 11 | 12 | 14 | 15 | 16 | 18 | |
| GCPW GCPWLK GCPWRK GCPWWK | GCPSW GCPSWLK GCPSWRK GCPSWWK | 20 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | － | － | － | － | － | － | － |
| 26 | － | 1.0 | 1.5 | 2.0 | 2.0 | 2.0 | 2.0 | － | － | － | － | － | ||
| 29 | － | 1.0 | 1.5 | 2.0 | 2.5 | 2.5 | 3.0 | 3.0 | 3.0 | － | － | － | ||
| 33 | － | － | 2.5 | － | 2.5 | 3.5 | 3.5 | 4.0 | 5.0 | 5.0 | 5.0 | － | ||
| 39 | － | － | － | － | 5.5 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | ||
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.
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
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.
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.
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.
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.
Part Number
- Incomplete part number.
Please use left hand selections to complete a part number.
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| Part Number |
|---|
| GCPW33-14-14 |
| Part Number | Price | Minimum Order Qty. | Volume Discount | Days to Ship | RoHS | Shaft Bore Dia. 1 d1 (or d) (Ø) | Shaft Bore Dia. 2 d2 (or d) (Ø) | O.D. (Ø) | Overall Length (mm) | Allowable Torque Range (N•m) | Features | Allowable Torque (N•m) | Allowable Lateral Misalignment (mm) | Allowable Lateral Misalignment Range (mm) | Allowable Axial Misalignment (mm) | Moment of Inertia (kg･m2) | Shaft Bore Shape |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
₹ 2,584.62 | 1 Piece(s) | Available | Same day | 10 | 14 | 14 | 33 | 40 | 3.01~5.00 | High Torsional Rigidity / Zero Backlash | 5 | 0.2 | 0.02~0.2 | 0.4 | 1.1×10-5 | Standard Bore |
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Basic Information
| Series Name | Disc | Application | For Servo Motors / Stepping Motor | Allowable Misalignment | Angular Misalignment / Eccentricity / Axial Misalignment |
|---|---|---|---|---|---|
| Max. Rotational Speed Range(r/min) | 4001~10000 | Body Material | Aluminum Alloy | Allowable Angular Misalignment(deg) | 2 |
| Product Category | Coupling Main Body | Max. Rotational Speed(r/min) | 10000 | Disc Material | Stainless Steel |
| Single/Double | Double | Shaft Tightening Method | Fastening Bolt |
Please check the type/dimensions/specifications of the part GCPW33-14-14 in the Disc Couplings High Flexible, Double Disc series.
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Frequently asked question (FAQ)
- Question: Which disc type coupling is better, single disc type or double disc type?
-
Answer:
Double disc type can absorb angular misalignment and lateral misalignment, but the total length will increase.
Although the total length of the single disc type is short, it is only suitable for applications with narrow space because lateral misalignment is not allowed in the structure.
Special attention should be paid to centering during use. - Question: Abnormal sound or vibration occurs during use of disc type coupling.
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Answer:
When a servo motor is used, the frequency of the mechanical resonance suppression filter is set as its inherent vibration frequency in the control system to suppress sound and vibration.
When using a stepping motor, the rotational speed can be finely adjusted, or the vibration can be absorbed and suppressed by the high damping rubber type coupling with obvious attenuation effect. - Question: How to select according to the purpose, environment, working conditions?
- Answer: Please refer to the MISUMI website.
- Question: What is a coupling?
- Answer: A coupling is a part that connects two different rotating bodies (motor shaft, ball screw, etc.) and aims at transmitting torque. The load of assembly adjustment is reduced by absorbing the axis deviation (lateral misalignment, angular misalignment and axial amplitude) between rotating bodies. And in case of accidental overload, the coupling is destroyed and the rotating bodies are disconnected to protect the expensive power part and the whole device.
- Question: The coupling is damaged in use.
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Answer:
Whether it is within the allowable axis deviation during use
Please note that when multiple axis deviations occur at the same time, their allowable values are reduced to 1/2 of that described in the product catalog.
Product variants
| Part Number |
|---|
| GCPW20-8-8 |
| GCPW29-10-10 |
| GCPW29-10-14 |
| GCPW33-12-16 |
| GCPW39-12-16 |
| GCPWRK33-10-14 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Shaft Bore Dia. 1 d1 (or d) (Ø) | Shaft Bore Dia. 2 d2 (or d) (Ø) | O.D. (Ø) | Overall Length (mm) | Allowable Torque Range (N•m) | Features | Allowable Torque (N•m) | Allowable Lateral Misalignment (mm) | Allowable Lateral Misalignment Range (mm) | Allowable Axial Misalignment (mm) | Moment of Inertia (kg･m2) | Shaft Bore Shape |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
₹ 2,275.70 | 1 Piece(s) | Available |
Same day
Stock | 10 | 8 | 8 | 20 | 28.8 | 0.05~1.00 | High Torsional Rigidity / Zero Backlash | 1 | 0.1 | 0.02~0.2 | 0.2 | 1.1×10-6 | Standard Bore | |
₹ 2,477.05 | 1 Piece(s) | Available |
Same day
Stock | 10 | 10 | 10 | 29 | 34.3 | 1.01~3.00 | High Torsional Rigidity / Zero Backlash | 3 | 0.15 | 0.02~0.2 | 0.3 | 5.5×10-6 | Standard Bore | |
₹ 2,490.68 | 1 Piece(s) | Available |
Same day
Stock | 10 | 10 | 14 | 29 | 34.3 | 1.01~3.00 | High Torsional Rigidity / Zero Backlash | 3 | 0.15 | 0.02~0.2 | 0.3 | 5.5×10-6 | Standard Bore | |
₹ 2,615.04 | 1 Piece(s) | Available |
Same day
Stock | 10 | 12 | 16 | 33 | 40 | 3.01~5.00 | High Torsional Rigidity / Zero Backlash | 5 | 0.2 | 0.02~0.2 | 0.4 | 1.1×10-5 | Standard Bore | |
₹ 2,961.06 | 1 Piece(s) | Available |
Same day
Stock | 10 | 12 | 16 | 39 | 49.4 | 5.01~10.00 | High Torsional Rigidity / Zero Backlash | 8 | 0.25 | 0.21~0.40 | 0.5 | 2.7×10-5 | Standard Bore | |
₹ 2,686.62 | 1 Piece(s) | Available |
Same day
Stock | 10 | 10 | 14 | 33 | 40 | 3.01~5.00 | High Torque Type / Zero Backlash | 5 | 0.2 | 0.02~0.2 | 0.4 | 1.1×10-5 | Keywayed Bore (d2 Side) |
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