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DFCG Stainless Steel Jaw Coupling – Clamp Type with Polyurethane Spider | High Precision H7 Bore for Servo Motors
Model Number
Check below, custom
| Model | Outer Diameter (mm) | Length (mm) | Bore Range (mm) |
|---|---|---|---|
| DFCG | 14 | 22 | 4–6 |
| DFCG | 20 | 25 | 5–10 |
| DFCG | 20 | 30 | 5–10 |
| DFCG | 25 | 30 | 5–12 |
| DFCG | 25 | 34 | 5–12 |
| DFCG | 30 | 35 | 5–16 |
| DFCG | 30 | 40 | 5–16 |
| DFCG | 35 | 50 | 5–19 |
| DFCG | 40 | 50 | 8–24 |
| DFCG | 40 | 55 | 8–24 |
| DFCG | 40 | 66 | 8–24 |
| DFCG | 55 | 78 | 12–32 |
| DFCG | 65 | 90 | 14–40 |
| DFCG | 80 | 114 | 19–45 |
| DFCG | 95 | 126 | 19–55 |
| DFCG | 105 | 140 | 20–60 |
| DFCG | 120 | 160 | 22–65 |
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
DFCG Stainless Steel Jaw Coupling – Clamp Type with Polyurethane Spider
Factory Direct | 304/316 Stainless Steel | H7 Precision Bore | Zero Backlash | Corrosion Resistant
Product Overview
The DFCG Stainless Steel Jaw Coupling is a premium flexible shaft coupling designed for applications that demand high torque transmission, precision alignment, and excellent corrosion resistance. Manufactured from high‑grade 304 or 316 stainless steel and featuring a clamp‑type (split‑hub) mounting design, this coupling eliminates backlash and ensures reliable power transfer even under reversing or oscillating loads.
The polyurethane elastomeric spider (available in different hardness grades) absorbs vibration, compensates for angular, parallel, and axial misalignments, and protects connected equipment from shock loads. With H7 precision‑ground bores and 12.9‑grade socket head cap screws, the DFCG coupling delivers the accuracy and clamping force required for servo motors, CNC machines, packaging lines, and other demanding industrial environments.
📧 Get a Quote: ella@apexcoupling.com | WhatsApp/WeChat: +86 13431039760
Key Features
| Feature | Benefit |
|---|---|
| SUS304 / SUS316 Stainless Steel Hubs | Excellent corrosion resistance and high mechanical strength – ideal for food, chemical, marine, and outdoor applications |
| Clamp‑Type (Split‑Hub) Mounting | Allows easy installation and removal without shaft damage; provides uniform clamping force for zero‑backlash operation |
| H7 Precision Inner Bore | Machined to strict H7 tolerance for high concentricity, accurate shaft fit, and minimised runout |
| Polyurethane Spider Insert | Absorbs shock and vibration, compensates for misalignment, and provides electrical insulation; oil‑resistant and wear‑resistant |
| 12.9‑Grade Screws | High‑strength socket head cap screws ensure secure locking and long‑term reliability |
| Mirror Polished Surface | Enhances corrosion resistance and gives a clean, professional appearance |
| Zero Backlash | Ideal for reversible drives and precision positioning applications |
| Fully Customisable | Bores, keyways, hex/square bores, splines, and special materials available on request |
Technical Specifications
| Parameter | Details |
|---|---|
| Model Series | DFCG (Clamp Type Stainless Steel Jaw Coupling) |
| Hub Material | SUS304 / SUS316 Stainless Steel (custom materials available) |
| Spider Material | Polyurethane (various hardness grades available) |
| Bore Tolerance | H7 Precision Standard |
| Mounting Style | Clamp Type (Split‑Hub with 12.9‑grade screws) |
| Surface Finish | Polished / Mirror Finish (standard) |
| Misalignment Compensation | Angular, parallel, and axial (up to 1° angular, 0.2mm parallel, 0.5mm axial, depending on size) |
| Operating Temperature | -30°C to +90°C (elastomer dependent) |
| Product Certification | ISO 9001 Certified |
| Place of Origin | Guangdong, China |
Model Designation & Standard Sizes
The DFCG coupling is designated as follows:
DFCG – OuterDiameter × Length – d1 – d2
Example: DFCG‑20×30‑3‑3
→ Outer diameter = 20 mm, Total length = 30 mm, Bore d1 = 3 mm, Bore d2 = 3 mm.
| Outer Diameter (mm) | Length (mm) | Standard Bore Range (mm) |
|---|---|---|
| 20 | 30 | 3 – 8 |
| 25 | 35 | 4 – 10 |
| 30 | 40 | 5 – 12 |
| 35 | 45 | 6 – 14 |
| 40 | 50 | 8 – 16 |
| 45 | 55 | 10 – 20 |
| 50 | 60 | 12 – 24 |
| 55 | 65 | 14 – 28 |
| 65 | 80 | 16 – 35 |
The above are common sizes. Custom outer diameters, lengths, and bores are readily available. For special requirements (keyway, hexagon, square, spline), please specify when ordering.
Example of custom ordering:
Need a keyway? Add K after bore size (e.g., 8K)
Hexagon bore? Add F
Square bore? Add S
Spline bore? Add H
Contact us for detailed drawings and dimensional checks.
Applications
The DFCG stainless steel jaw coupling is widely used in:
Servo Motors & Stepper Drives – High‑precision motion control systems
CNC Machine Tools – Milling, turning, drilling equipment
Food Processing Machinery – Hygiene‑critical, corrosion‑prone environments
Packaging & Printing Machinery – High‑speed continuous operation
Pharmaceutical & Chemical Equipment – Stainless steel compatibility
Semiconductor Manufacturing – Cleanroom and precision alignment
Woodworking Machinery – Dust‑resistant, durable coupling
Photovoltaic & Solar Equipment – Outdoor, long‑life applications
Textile & Printing Machines – High‑speed reversing drives
Why Choose Apexcoupling?
🏭 Factory Direct – Integrated manufacturing and trading, competitive pricing
🔩 Premium Stainless Steel – 304/316 with full traceability, polished finish
⚙️ H7 Precision & Zero Backlash – Ideal for servo applications
🧪 ISO Certified Quality – Rigorous inspection and testing
📦 Fast Delivery – Standard sizes in stock, ready to ship
🛠️ Full Customisation – Bores, keyways, special shapes, and lengths – no MOQ restrictions
💬 Expert Engineering Support – We help you select the right model for your application
Custom & Non‑Standard Orders
We understand that every application is unique. Apexcoupling offers extensive customisation options:
Custom bore diameters (2 mm – 100 mm+)
Special keyway dimensions (DIN 6885‑1, JS9 tolerance)
Hexagon (F) and square (S) bore profiles
Involute or straight spline profiles (H)
Non‑standard outer diameters and overall lengths
Special spider hardness (shore hardness 85A, 90A, 95A, etc.)
Other materials (e.g., 316L, 17‑4PH stainless steel) on request
📧 Send your drawings or requirements to: ella@apexcoupling.com
Get a Quote Today
Ready to order or need more information? Contact us directly:
📧 Email: ella@apexcoupling.com
📱 WhatsApp / WeChat: +86 13431039760
🌐 Website: www.apexcoupling.com
We reply within 24 hours with pricing, availability, and technical recommendations.
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DFCG stainless steel jaw coupling
