Product Description

GHC Oldham type coupling cross sliding clamp coupling

Description of   GHC Oldham type coupling cross sliding clamp coupling
>The colloid material is imported PA66, which has good wear resistance, corrosion resistance and electrical insulation
>Sliding design can compensate radial and angular deviation more effectively
>Detachable design, easy to install
>Fastening method of clamping screw

Dimensions of  GHC Oldham type coupling cross sliding clamp coupling

model parameter	common bore diameter d1,d2	ΦD	L	LF	LP	F	M	tightening screw torque (N.M)
GHC-16X21	4,5,6,6.35	16	21	8.6	11.6	2.5	M2.5	1
GHC-16X30	4,5,6,6.35	16	30	13.1	11.6	3	M2.5	1
GHC-20X22	5,6,6.35,7,8	20	22	8.6	12.7	2.5	M2.5	1
GHC-20×33	5,6,6.35,7,8	20	33	14.1	12.7	3	M2.5	1
GHC-25×28	5,6,6.35,8,9,9.525,10,11,12	25	28	11.7	16.65	3	M3	1.5
GHC-25X39	5,6,6.35,8,9,9.525,10,11,12	25	39	17.2	16.65	4.2	M3	1.5
GHC-32X33	5,6,8,9,9.525,10,11,12.12.7,14,15,16	32	33	14	19.5	3	M4	2.5
GHC-32X45	5,6,8,9,9.525,10,11,12,12.7,14,15,16	32	45	20	19.5	4.5	M4	2.5
GHC-40X50	8,9,9.525,10,11,12,14,15,16,17,18,19	40	50	23	18.4	7	M5	7
GHC-45X46	8,9,9.525,10,11,12,14,15,16,17,18,19,20,22	45	46	21	18.4	7	M5	7
GHC-50X53	10,11,12.7,14,15,16,17,18,19,20,22,24	50	53	24	15	7.5	M6	12
GHC-50X58	10,11,12.7,14,15,16,17,18,19,20,22,24	50	58	26.5	17.5	8	M6	12
GHC-55X57	10,11,12.7,14,15,16,17,18,19,20,22,24,25,28,30,32	55	57	26	17.5	7.8	M6	12
GHC-63X71	14,15,16,17,18,19,20,22,24,25,28,30,32	63	71	33	24	10	M8	20
GHC-70X77	14,15,16,17,18,19,20,22,24,25,28,30,32,35,38	70	77	29.5	25	12	M8	20

  

model parameter	Rated torque (N.M)*	allowable eccentricity (mm)*	allowable deflection angle (°)*	allowable axial deviation (mm)*	maximum speed rpm	static torsional stiffness (N.M/rad)	moment of inertia (Kg.M2)	Material of shaft sleeve	Material of shrapnel	surface treatment	weight (g)
GHC-16X21	0.7	0.8	3	±0.2	8500	30	5.5×10-7	High strength aluminum alloy	P A 6 6	Anodizing treatment	8
GHC-16X30	0.7	0.8	3	±0.2	9000	30	5.9×10-7				12
GHC-20X22	1.2	1.2	3	±0.2	6500	58	1.3×10-6				13
GHC-20×33	1.2	1.2	3	±0.2	7000	58	1.5×10-6				19
GHC-25X28	2	1.6	3	±0.2	5500	130	4.0×10-6				24
GHC-25X39	22	1.6	3	±0.2	6000	130	4.5×10-6				35
GHC-32X33	4.5	2	3	±0.2	4500	270	1.3×10-5				48
GHC-32X45	4.5	2	3	±0.2	4800	270	1.5×10-5				67
GHC-40X50	9	2.4	3	±0.2	3600	520	4.2×10-5				114
GHC-45X46	12	2.5	3	±0.2	3500	800	4.5×10-5				140
GHC-50X53	19	2.6	3	±0.2	3000	800	1.0×10-4				190
GHC-50X58	19	3	3	±0.2	3000	800	1.1×10-4				215
GHC-55X57	25	3.2	3	±0.2	3000	900	1.3×10-5				260
GHC-63X71	33	3	3	±0.2	2550	1200	3.5×10-4				455
GHC-70X77	56	3.5	3	±0.2	2500	1260	4.1×10-5				520

 

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Typical Applications of Oldham Couplings

Oldham couplings find various applications in different industries due to their unique features and benefits. Some typical applications include:

1. Industrial Machinery: Oldham couplings are commonly used in industrial machinery, such as conveyor systems, packaging machines, and assembly lines. They help transmit torque between shafts while accommodating misalignment, reducing vibration, and protecting sensitive components.

2. Robotics and Automation: Oldham couplings are employed in robotics and automation systems to connect motor shafts and other mechanical components. Their ability to handle misalignment and their compact design make them suitable for precision movements and robotic applications.

3. Printing and Labeling: In printing and labeling machines, Oldham couplings are utilized to connect rollers and drive shafts. They ensure accurate and reliable torque transmission while allowing for angular misalignment that may occur during operation.

4. Medical Equipment: Oldham couplings are used in medical equipment, such as imaging devices and surgical instruments. Their low backlash and smooth operation are crucial for precise positioning and reducing wear on sensitive medical components.

5. Automotive Industry: In automotive applications, Oldham couplings are used in various systems, including windshield wipers, power seat adjustments, and steering mechanisms. They aid in transferring torque smoothly and maintaining alignment even in dynamic conditions.

6. Textile Machinery: Textile manufacturing equipment often incorporates Oldham couplings to connect spindles and other rotating components. These couplings allow for misalignment while delivering reliable power transmission in high-speed textile processes.

7. Food and Beverage Processing: Oldham couplings are suitable for food and beverage processing machinery, where hygiene and precision are critical. They help connect drive shafts in mixers, conveyors, and packaging equipment.

8. Aerospace and Defense: In aerospace and defense applications, Oldham couplings are used in systems that require reliable torque transmission while compensating for misalignment and vibration. They can be found in various aircraft and defense equipment.

These are just a few examples of the many applications where Oldham couplings play a vital role in ensuring smooth and efficient power transmission and minimizing the wear and tear of mechanical systems.

How to Calculate the Required Size and Specifications for an Oldham Coupling

Calculating the required size and specifications for an Oldham coupling involves considering several key factors. Here’s a step-by-step guide to help you with the calculations:

1. Identify the Torque Requirements: Determine the maximum torque that the coupling needs to transmit between the two shafts. This can be done by analyzing the torque demands of the application and considering safety factors.
2. Select the Coupling Material: Based on the operating conditions and the type of machinery, choose a suitable material for the Oldham coupling. Common materials include aluminum, stainless steel, and acetal.
3. Calculate the Bore Diameter: Measure the diameters of the shafts that the coupling will connect. The bore diameter of the coupling should match the shaft diameters for a proper fit.
4. Determine the Coupling Size: The coupling’s size is typically specified by its outside diameter and length. Ensure that the selected coupling size fits within the available space in the mechanical system.
5. Consider Misalignment Compensation: Oldham couplings can accommodate angular misalignment. However, it’s essential to check the coupling’s rated misalignment capability to ensure it meets the application’s requirements.
6. Check Operating Speed: Verify that the selected coupling can handle the rotational speed (RPM) of the application without exceeding its critical speed.
7. Factor in Environmental Conditions: If the coupling will be exposed to harsh environmental conditions or corrosive substances, choose a material that can withstand these conditions.

Once you have gathered all the necessary information and made the calculations, you can select the appropriate Oldham coupling that meets the requirements of your specific application. It’s important to consult with coupling manufacturers or engineering experts to ensure the coupling’s compatibility and reliability in your system.

Transmission of Torque in Oldham Couplings

An Oldham coupling is designed to transmit torque between two shafts that are misaligned but parallel to each other. It consists of three components: two hubs (also known as drive hubs) and a center disc. The hubs are connected to their respective shafts, while the center disc sits between them.

The center disc of the Oldham coupling is characterized by slots or keyways on its opposite sides, which engage with the hubs. The slots allow the center disc to slide or float within the hubs while maintaining a constant angular velocity between the shafts.

When torque is applied to the drive hub on one side, it induces a rotational force on the center disc. This rotational force is then transferred to the other drive hub, which results in torque transmission to the second shaft. The center disc acts as an intermediary between the two hubs, compensating for any axial or radial misalignment between the shafts.

Regarding the question of different shaft diameters, the Oldham coupling can accommodate shafts with different diameters as long as the hub design allows for a secure connection. The keyways or slots in the center disc and hubs should be compatible with the shaft dimensions to ensure proper torque transmission and to prevent slippage or damage.

It is essential to select the appropriate size and design of the Oldham coupling to match the shaft diameters and to ensure reliable torque transmission while accommodating any misalignment between the shafts.

editor by CX 2024-01-09