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DFC Aluminum Jaw Spider Coupling – Zero Backlash Flexible Shaft Coupler for Servo Motor & Ball Screw
Model Number
Check below, custom
| Outer Diameter (mm) | Length (mm) | Bore Range (mm) |
|---|---|---|
| 14 | 22 | 3 – 7 |
| 20 | 25 | 4 – 10 |
| 20 | 30 | 4 – 10 |
| 25 | 30 | 4 – 12 |
| 25 | 34 | 4 – 12 |
| 30 | 35 | 5 – 16 |
| 30 | 40 | 5 – 16 |
| 35 | 50 | 6 – 19 |
| 40 | 50 | 8 – 24 |
| 40 | 55 | 8 – 24 |
| 40 | 66 | 8 – 24 |
| 45 | 55 | 8 – 25 |
| 45 | 66 | 8 – 25 |
| 55 | 78 | 12 – 30 |
| 65 | 90 | 14 – 40 |
| 80 | 114 | 19 – 45 |
| 95 | 126 | 22 – 55 |
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
DFC Aluminum Jaw Spider Coupling – Zero Backlash Flexible Shaft Coupler for Servo Motor & Ball Screw
The DFC aluminum jaw spider coupling is a high-precision, zero-backlash flexible shaft coupler engineered for servo motors, stepper motors, and ball screw drives. Manufactured from aerospace-grade aluminum alloy with H6 bore precision and an anodized surface finish, this DFC spider coupling delivers exceptional torsional rigidity, vibration damping, and misalignment compensation in compact CNC, automation, and robotics applications.
Featuring a German-imported polyurethane spider capable of withstanding temperatures up to 140°C, the DFC jaw coupling absorbs radial, angular, and axial deviations while maintaining zero rotary clearance – making it ideal for high-frequency reversing drives where positional accuracy is critical.
As a source factory manufacturer, Apexcoupling.com offers the DFC aluminum flexible coupling with full customization support, including different bore sizes on each end, non-standard dimensions, and special material options.
DFC Series Specifications (Example: OD14 × L22)
| Parameter | Specification |
|---|---|
| Model | DFC (Jaw / Spider Type) |
| Body Material | High-Strength Aluminum Alloy (Aerospace Grade) |
| Spider Material | German-Imported Polyurethane (PU) |
| Surface Treatment | Anodized Oxidation (Anti-Corrosion) |
| Outer Diameter (D) | 14 mm |
| Overall Length (L) | 22 mm |
| Bore Range (d) | 3 mm – 7 mm (Optional, Both Ends) |
| Rated Torque (Tn) | 1.1 N·m |
| Max. Speed | 1,000 RPM |
| Bore Tolerance | H6 Precision |
| Fixing Method | Keyway + Clamping Screw (12.9 Grade) |
| Backlash | Zero |
| Compensation | Radial, Angular, Axial |
| Protection Class | IP65 |
| Standard | ISO Certified |
| Weight | ≈ 10–15 g |
Both ends can have different bore sizes (e.g., 3 mm × 5 mm, 4 mm × 6 mm). Non-standard OD, length, and bore combinations fully supported.
Key Features – DFC Aluminum Jaw Spider Coupling
✅ Zero Backlash – Perfect for Servo & Stepper Motors
The DFC jaw coupling maintains zero rotary clearance thanks to the tight-fitting polyurethane spider and H6 precision bores. Essential for CNC machines, servo drives, and positioning systems requiring exact motion control.
The DFC jaw coupling maintains zero rotary clearance thanks to the tight-fitting polyurethane spider and H6 precision bores. Essential for CNC machines, servo drives, and positioning systems requiring exact motion control.
✅ Aerospace-Grade Aluminum Alloy Body
Machined from high-strength aluminum on 5-axis CNC equipment for superior concentricity. The anodized surface treatment extends service life by 30% compared to conventional finishes and resists corrosion in humid or weak acid/alkali environments.
Machined from high-strength aluminum on 5-axis CNC equipment for superior concentricity. The anodized surface treatment extends service life by 30% compared to conventional finishes and resists corrosion in humid or weak acid/alkali environments.
✅ German-Imported Polyurethane Spider
The Plum blossom shape (jaw-type) PU spider offers excellent wear resistance, oil resistance, and electrical insulation. Rated for 140°C continuous operation, it effectively absorbs shock and vibration while compensating for shaft misalignment.
The Plum blossom shape (jaw-type) PU spider offers excellent wear resistance, oil resistance, and electrical insulation. Rated for 140°C continuous operation, it effectively absorbs shock and vibration while compensating for shaft misalignment.
✅ H6 Precision Bore – Smooth Fit
H6 tolerance bores ensure a precise, slip-free connection to motor and ball screw shafts. 3D chamfered edges (OD25 and above) protect hands during installation and prevent shaft scoring.
H6 tolerance bores ensure a precise, slip-free connection to motor and ball screw shafts. 3D chamfered edges (OD25 and above) protect hands during installation and prevent shaft scoring.
✅ Multi-Directional Misalignment Compensation
Compensates for radial, angular, and axial deviations simultaneously. The flexible spider design protects connected bearings and extends the life of servo motors and precision gearboxes.
Compensates for radial, angular, and axial deviations simultaneously. The flexible spider design protects connected bearings and extends the life of servo motors and precision gearboxes.
✅ Bi-Directional Rotation – No Wind-Up
Suitable for forward and reverse operation with identical torsional characteristics in both directions. No hysteresis or wind-up effects.
Suitable for forward and reverse operation with identical torsional characteristics in both directions. No hysteresis or wind-up effects.
✅ Split Design – Easy Installation
The clamping-screw split hub design allows for quick assembly and disassembly without moving connected equipment. Simply slide onto the shaft and tighten the 12.9-grade high-strength screws.
The clamping-screw split hub design allows for quick assembly and disassembly without moving connected equipment. Simply slide onto the shaft and tighten the 12.9-grade high-strength screws.
✅ Custom Bore Combinations
Both hubs can be machined with different bore diameters to connect mismatched shafts (e.g., servo motor 6 mm to ball screw 8 mm). Contact us with your exact shaft dimensions.
Both hubs can be machined with different bore diameters to connect mismatched shafts (e.g., servo motor 6 mm to ball screw 8 mm). Contact us with your exact shaft dimensions.
Material & Manufacturing Excellence
| Component | Material / Process | Advantage |
|---|---|---|
| Hub Body | High-strength aluminum alloy, 5-axis CNC machined | Lightweight, high strength, perfect concentricity |
| Surface Finish | Anodized oxidation | 30% longer life, corrosion & wear resistance |
| Spider (Jaw Insert) | German-imported polyurethane (PU) | 140°C rated, oil-resistant, vibration damping |
| Bore Machining | H6 precision, single-setup turning | Zero backlash fit, smooth shaft engagement |
| Fixing Screws | 12.9 grade alloy steel | High clamping force, anti-loosening |
| Edge Treatment | 3D chamfer (OD≥25) | Safe handling, no burrs |
Every DFC jaw coupling undergoes strict dimensional inspection – bore diameter, concentricity, surface finish, and spider hardness – ensuring ISO-compliant quality before shipment.
Applications – Precision Motion Control
The DFC aluminum spider coupling is the preferred choice for high-precision motion systems:
- ⚙️ Servo Motors – Servo-to-ball screw, servo-to-gearbox connections
- 🔩 Ball Screw Drives – CNC lathes, milling machines, 3D printers
- 🤖 Automation Equipment – Robotic arms, linear actuators, pick-and-place machines
- 📐 Stepper Motor Drives – Engraving machines, laser cutters, plotters
- 🏭 Packaging Machinery – Filling, sealing, labeling equipment
- 🔬 Medical & Laboratory Equipment – Precision pumps, analyzers, diagnostic devices
- 📦 Textile & Printing Machinery – High-speed spindles, roller drives
How to Select the Right DFC Coupling
Step 1: Confirm Space Constraints
Choose the outer diameter (D) and length (L) that fit your installation envelope.
Example: OD14 mm × L22 mm for compact servo motors.
Choose the outer diameter (D) and length (L) that fit your installation envelope.
Example: OD14 mm × L22 mm for compact servo motors.
Step 2: Check Bore Range
Ensure your shaft diameter falls within the available bore range.
Example: OD14×L22 supports bores from 3 mm to 7 mm.
Ensure your shaft diameter falls within the available bore range.
Example: OD14×L22 supports bores from 3 mm to 7 mm.
Step 3: Specify Bore Sizes
Both ends can have different bores. Simply note your requirements when ordering.
Example: “Bore 4 mm × 6 mm” or “3 mm × 5 mm”.
Both ends can have different bores. Simply note your requirements when ordering.
Example: “Bore 4 mm × 6 mm” or “3 mm × 5 mm”.
Step 4: Verify Torque & Speed
Confirm your application torque and RPM are within the coupling rating.
Example: 1.1 N·m torque, 1,000 RPM max for OD14×L22.
Confirm your application torque and RPM are within the coupling rating.
Example: 1.1 N·m torque, 1,000 RPM max for OD14×L22.
Need help? Send us your motor model, shaft diameter, and application details – we will recommend the exact DFC coupling size within 24 hours.
Customization Process – How to Order
We provide full OEM/ODM support for the DFC jaw spider coupling. Our streamlined process ensures precision and speed:
| Step | Process | Description |
|---|---|---|
| 01 | Custom Inquiry | Contact us with your coupling requirements |
| 02 | Requirement Review | We review bore sizes, torque, speed, and environment |
| 03 | Quotation | Competitive factory-direct pricing delivered |
| 04 | Order & Payment | Confirm order and complete payment |
| 05 | Sample Confirmation | First article inspection for custom dimensions |
| 06 | Batch Production | CNC machining with strict quality control |
| 07 | Delivery | Export packaging and punctual global shipping |
| 08 | Feedback | Post-delivery support and satisfaction follow-up |
For custom orders, please provide:
- Shaft diameters for both ends (can be different)
- Required outer diameter and overall length
- Application torque and max RPM
- Operating environment (temperature, oil exposure, dust)
- Target quantity and delivery schedule
Why Choose Apexcoupling.com?
| Advantage | Detail |
|---|---|
| 🏭 Source Factory | Direct manufacturer of precision couplings and drive components |
| ⚙️ 5-Axis CNC Machining | Single-setup production ensures perfect concentricity and H6 bore precision |
| 📦 Large Inventory | Standard DFC sizes in stock for immediate dispatch |
| 🔧 Full Customization | Non-standard OD, length, bore combinations, and special materials available |
| 🧪 Strict Quality Control | 100% dimensional inspection, ISO-certified processes |
| 🌐 Global Export | Professional packaging with full documentation |
| 💰 Competitive Pricing | Factory-direct pricing with volume discounts |
| 🚀 Fast Response | Technical support and quotations within 24 hours |
📞 Request Your DFC Coupling Quote Today
In Stock: DFC OD14×L22, DFC OD20×L25, DFC OD25×L30, DFC OD30×L35, DFC OD40×L50, and complete DFC series
Whether you need a standard DFC aluminum jaw spider coupling or a fully customized precision shaft coupler, Apexcoupling.com delivers high-quality motion control solutions with fast global delivery.
👉 [Request a Quote / Send Inquiry]
📧 Email: ella@apexcoupling.com
📱 WhatsApp: +86 13437856962
🌐 Website: www.apexcoupling.com
📧 Email: ella@apexcoupling.com
📱 WhatsApp: +86 13437856962
🌐 Website: www.apexcoupling.com
FAQ – DFC Aluminum Jaw Spider Coupling
Q1: What is the torque and speed rating of the DFC OD14×L22 coupling?
A: The DFC OD14×L22 has a rated torque of 1.1 N·m and a maximum speed of 1,000 RPM. It is designed for small servo motors and stepper drives.
A: The DFC OD14×L22 has a rated torque of 1.1 N·m and a maximum speed of 1,000 RPM. It is designed for small servo motors and stepper drives.
Q2: Can the two ends have different bore sizes?
A: Yes. The DFC jaw coupling supports different bore diameters on each hub. For example, you can order a 4 mm × 6 mm combination to connect a servo motor to a ball screw with different shaft sizes.
A: Yes. The DFC jaw coupling supports different bore diameters on each hub. For example, you can order a 4 mm × 6 mm combination to connect a servo motor to a ball screw with different shaft sizes.
Q3: What makes the DFC coupling suitable for servo motors?
A: The DFC coupling features zero backlash, H6 precision bores, and high torsional stiffness – all critical for servo systems where positional accuracy and rapid reversing are required.
A: The DFC coupling features zero backlash, H6 precision bores, and high torsional stiffness – all critical for servo systems where positional accuracy and rapid reversing are required.
Q4: What is the maximum operating temperature?
A: The German-imported polyurethane spider is rated for continuous operation up to 140°C. The aluminum hub can withstand even higher temperatures.
A: The German-imported polyurethane spider is rated for continuous operation up to 140°C. The aluminum hub can withstand even higher temperatures.
Q5: How does the DFC coupling compensate for misalignment?
A: The flexible PU spider absorbs radial, angular, and axial misalignment simultaneously, protecting motor bearings and extending equipment life.
A: The flexible PU spider absorbs radial, angular, and axial misalignment simultaneously, protecting motor bearings and extending equipment life.
Q6: Do you offer larger sizes for heavier loads?
A: Yes. The DFC series is available in multiple sizes, with larger OD models handling significantly higher torque. Contact us with your torque and shaft requirements for size recommendations.
A: Yes. The DFC series is available in multiple sizes, with larger OD models handling significantly higher torque. Contact us with your torque and shaft requirements for size recommendations.
Q7: What surface treatment does the DFC coupling have?
A: The aluminum hub receives an anodized oxidation treatment for enhanced corrosion resistance, wear protection, and a 30% longer service life compared to untreated aluminum.
A: The aluminum hub receives an anodized oxidation treatment for enhanced corrosion resistance, wear protection, and a 30% longer service life compared to untreated aluminum.
DFC aluminum jaw spider coupling OD14 L22 servo motor
DFC jaw coupling zero backlash anodized aluminum hub
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Product Show
OD14 jaw coupling, 3mm bore spider coupling, servo motor shaft connector, ball screw coupler, H6 precision coupling, CNC coupling, automation coupling, servo drive coupling, stepper motor coupler, precision machinery connector,
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