High-Precision Shaft Couplings | Zero Backlash Disc Coupling | Servo Motor Coupler
Discover our precision shaft couplings featuring zero backlash, 304 stainless steel diaphragm, and aluminum construction. Perfect for servo motors and high-speed applications.
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Precision Disc Shaft Couplings - Zero Backlash Aluminum Coupling for Servo & Stepper Motors
Model Number
DS-19*20
DS-26*26
DS-34*32
DS-39*34.5
DS-44*34.5
DS-56*45
DS-68*53
DS-82*68
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
Our precision disc shaft couplings represent the pinnacle of power transmission technology for demanding industrial applications. These high-performance shaft couplings combine robust aluminum alloy construction with a durable 304 stainless steel diaphragm to deliver exceptional torque transmission and precise positioning accuracy. Specifically engineered for servo and stepper motors, these flexible shaft couplings maintain zero backlash operation while effectively compensating for various misalignments. The innovative clamping screw fastening method ensures secure, gap-free connections between shafts, making these couplings ideal for applications requiring high-speed operation and precise motion control. With ISO9001 and BV certifications, our shaft couplings guarantee reliable performance in manufacturing plants, automation systems, and precision machinery applications.
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Key Features
True Zero Backlash: Ensures precise positioning accuracy for sensitive motion control applications
High-Speed Capability: Low inertia design enables operation at elevated rotational speeds
Superior Torque Rigidity: Maintains accurate shaft rotation control under varying load conditions
304 Stainless Steel Diaphragm: Provides excellent fatigue resistance and long service life
Bidirectional Operation: Suitable for both forward and reverse rotation applications
Easy Installation: Clamping screw design allows quick assembly without shaft damage
Lightweight Construction: Aluminum alloy body reduces rotational mass for improved dynamic response
Technical Specifications
| Parameter | Specification |
|---|---|
| Body Material | Aluminum Alloy |
| Diaphragm Material | 304 Stainless Steel |
| Structure Type | Disc/Diaphragm |
| Weight Range | 11-1560 g |
| Fastening Method | Clamping Screw |
| Operation Type | Bidirectional |
| Certifications | ISO9001, BV |
| Customization | OEM, ODM, OBM Supported |
Advantages & Benefits
| Feature | Benefit |
|---|---|
| Zero Backlash Design | Maintains precise positioning accuracy in servo and stepper applications |
| Stainless Steel Diaphragm | Ensures long service life and reliable performance under cyclic loading |
| High Torque Rigidity | Provides accurate motion transmission without torsional deflection |
| Lightweight Aluminum | Reduces system inertia for faster acceleration and deceleration |
| Easy Installation | Saves time during assembly and maintenance operations |
| Customizable Options | Adapts to specific application requirements and shaft sizes |
Applications
Servo motor systems and precision automation equipment
Stepper motor applications and CNC machinery
Robotics and automated assembly systems
Packaging machinery and material handling equipment
Medical device manufacturing systems
Semiconductor processing equipment
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Product Show
What this 8mm Shaft Coupling Zero Backlash with Keyway Diaphragm Disc Coupling Flexible Aluminium is used for?
Primary Application Summary
This coupling is designed for high-precision, low-to-medium torque motion control systems where accurate positioning, responsiveness, and reliability are critical. It connects two 8mm shafts without any lost motion.
Detailed Breakdown of Use Cases
| Feature in the Name | What It Means | What It’s Used For |
|---|---|---|
| 8mm Shaft | Connects two shafts with a diameter of 8mm. | Small-scale machinery, compact automation, and instruments. |
| Zero Backlash | No free movement or “play” between the input and output shafts. | Essential for precision positioning. Prevents errors in systems like CNC router axes, 3D printer heads, robotic arms, and optical scanners. |
| Keyway | A mechanical slot for a key, securing the coupling to the shaft to prevent slipping. | Applications with high start/stop torque or where a set-screw alone isn’t trusted. Provides a more robust connection. |
| Diaphragm / Disc | Uses a thin, flexible metal disc pack to transmit torque and accommodate misalignment. | Handles minor shaft misalignment while maintaining high torsional stiffness. Ideal for servo and stepper motor connections. |
| Flexible Aluminium | The hub material is aluminum, making it lightweight and corrosion-resistant. | Reduces weight and inertia in high-speed systems. Common in automation, aerospace prototypes, and clean environments. |
| OEM Support | The manufacturer offers Original Equipment Manufacturer support. | For companies that want to integrate this coupling into their own product (e.g., a branded CNC machine) with potential for custom modifications. |
Common Industries & Specific Machines
Automation & Robotics:Â Precise joints in robotic arms, automated assembly lines, and pick-and-place systems.
CNC Machinery:Â Connecting stepper or servo motors to lead screws or ball screws for accurate movement of the X, Y, and Z axes.
3D Printing & Additive Manufacturing:Â Driving the extruder carriage and print bed to ensure layer accuracy.
Optics & Lasers:Â Positioning mirrors, lenses, and laser heads without any jitter or positional error.
Medical & Laboratory Equipment:Â Used in sensitive instruments like DNA sequencers or automated sample handlers where reliability is key.
General Precision Engineering:Â Any application where a small motor must be precisely connected to a driven shaft without lost motion.
Why You Would Choose This Specific Coupling
You would select this model over a standard flexible jaw coupling when your application’s top priority is precision, not just power transmission. The combination of zero backlash and high torsional stiffness ensures that when the motor turns, the load on the other side moves instantly and exactly the same amount.
In short: This coupling is the go-to solution for connecting small motors in high-accuracy systems, commonly found in advanced automation, manufacturing, and technology.
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