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GR38 Steel Flexible Jaw Coupling – Rotex Curved Jaw Coupling with Keyway | Anti-Vibration | for Blender OEM | Customizable
Model Number
Check below, custom
D14-L22-d(3~6)
D20-L25-d(3~10)
D20-L30-d(3~10)
D25-L34-d(4~14)
D30-L35-d(5~16)
D30-L40-d(5~16)
D35-L50-d(5~19)
D40-L50-d(6~24)
D40-L55-d(6~24)
D40-L66-d(6~24)
D45-L55-d(8~25)
D45-L66-d(8~25)
D55-L78-d(12~32)
D65-L80-d(14~40)
D80-L114-d(14~45)
D95-L126-d(14~45)
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
GR38 Steel Flexible Jaw Coupling – Rotex Curved Jaw Coupling for Blender OEM
Factory Direct | S45C Steel Hubs | Imported PU Spider (140°C) | Keyway Transmission | Anti-Vibration | 3D Chamfer | High Concentricity | OEM/ODM
Product Overview
The GR38 Steel Flexible Jaw Coupling is a precision-engineered, curved jaw coupling designed as a direct replacement for Rotex® style couplings. It is widely used in blender OEM applications, packaging machinery, 3D printers, and general industrial drives where reliable torque transmission, vibration damping, and misalignment compensation are essential.
The coupling features two S45C alloy steel hubs and a PU (polyurethane) elastic spider. The imported PU material can withstand temperatures up to 140°C, making it suitable for demanding environments. The curved jaw (drum-shaped) design ensures low surface pressure on the teeth, preventing wear and deformation even under overload. The 3D chamfer on the hub edges avoids scraping hands during installation, while integration cutting guarantees high concentricity and smooth operation.
With keyway transmission and a compact, low-inertia structure, the GR38 coupling is the ideal choice for blenders, mixers, pumps, and other equipment requiring reliable, quiet, and maintenance-free power transmission. Custom bores, keyways, materials, and surface treatments are available to meet your specific OEM requirements.
📧 Get a Quote: ella@apexcoupling.com
Key Features
| Feature | Benefit |
|---|---|
| S45C Alloy Steel Hubs | High strength, excellent wear resistance, and long service life |
| Imported PU Spider | Works under 140°C, offers cushioning, vibration reduction, and wear resistance; maintenance-free |
| Curved Jaw Design | Low surface pressure on involute teeth; resists wear and deformation under overload |
| Keyway Transmission | Reliable torque transfer with standard keyway (DIN6885/1, JS9 tolerance) |
| 3D Chamfer | Edges are chamfered to avoid scraping hands during assembly |
| Integration Cutting | Ensures high concentricity and precise fit |
| Compact & Low Inertia | Ideal for high-speed and space-limited applications |
| Axial Plug-In Installation | Quick and easy assembly, reducing downtime |
| Anti-Vibration | Effectively absorbs shock and vibration, protecting driven equipment |
| Wide Temperature Range | PU elastomer: -35°C to +140°C (imported material) |
| Customizable | OEM, ODM, OBM support; custom bores, keyways, materials, surface finishes, and logo |
| 1-Year Warranty | Quality assurance and reliable after-sales support |
Technical Specifications
| Parameter | Details |
|---|---|
| Model | GR38 (Curved Jaw / Rotex Replacement) |
| Type | Flexible Jaw / Spider Coupling |
| Structure | Jaw / Spider (Curved Tooth) |
| Material (Hubs) | S45C Alloy Steel (standard); Aluminum, Stainless Steel, Bronze available |
| Material (Spider) | Imported PU (polyurethane); Nitrile, Hytrel, EPDM, Viton available |
| Rated Torque | 500 N·m (368.78 lb·ft) |
| Maximum Speed | 2000 RPM |
| Bore Diameter (d1–d2) | 4 mm – 38 mm |
| Outer Diameter | 20 mm – 65 mm |
| Length | 25 mm – 90 mm |
| Bore Tolerance | H7 Precision |
| Keyway Tolerance | JS9 (DIN6885/1) |
| Working Temperature | -35°C to +140°C (PU spider) |
| Misalignment Compensation | Axial, radial, angular |
| Installation | Axial plug-in |
| Surface Treatment | Bluing, black, zinc plated, nickel plated, polishing, oxidizing (customizable) |
| MOQ | 1 pc |
| Warranty | 1 year |
| Place of Origin | Guangdong, China |
| Brand | Apexcoupling |
| Certification | ISO Certified |
Customization Options
We offer extensive customization to meet your specific OEM needs:
| Customization | Available Options |
|---|---|
| Material | S45C Alloy Steel, Aluminum Alloy, Stainless Steel, Bronze, and other customized materials |
| Spacer (Spider) Material | PU (polyurethane), Nitrile, Hytrel, EPDM, Viton, and other customized materials |
| Surface Treatment | Bluing, black, zinc plated, nickel plated, polishing, oxidizing, any other surface treatments |
| Size | Outer diameter is standard; inner diameter and total length can be customized |
| Logo | Laser marking available – custom logos can be applied to the product surface |
| Bore Type | Keyway, hexagon (F), square (S), spline (H), and other profiles |
| Packaging | Customized packaging available |
📧 Send your drawing or requirements to: ella@apexcoupling.com
Product Description Highlights
3D Chamfer – Avoid scraping the hand during installation.
Imported PU Material – Can be worked under 140°C construction, offering excellent heat resistance.
Integration Cutting – Ensures high concentricity for smooth, vibration-free operation.
Applications
The GR38 flexible jaw coupling is widely used in:
Blender OEM – Direct replacement for original equipment
Food Processing Machinery – Mixers, blenders, and agitators
3D Printers – Precision motion control
Packaging Machinery – High-speed packaging lines
Pumps – Centrifugal and positive displacement pumps
Compressors – Air and gas compressors
Machine Tools – CNC lathes, milling machines
Manufacturing Plants – General industrial drives
Machinery Repair Shops – Replacement and repair
Retail – Equipment maintenance
Why Choose Apexcoupling?
🏭 Factory Direct – Integrated manufacturing and trading, competitive pricing
🔩 Premium S45C Steel Hubs – High strength and durability for demanding applications
🧵 Imported PU Spider – Heat-resistant up to 140°C, vibration-damping, and wear-resistant
⚙️ Curved Jaw Design – Low surface pressure, resistant to overload wear and deformation
📐 High Concentricity – Integration cutting ensures precise fit and smooth operation
🛠️ Full Customization – OEM, ODM, OBM support; custom bores, keyways, materials, finishes, and logos
✅ 1-Year Warranty – Quality assurance and reliable after-sales support
📦 Large Stock – Standard models ready for immediate shipment
💬 Expert Technical Support – We help you select the right coupling for your application
Get a Quote Today
Ready to order or need more information? Contact us directly:
📧 Email: ella@apexcoupling.com
We reply within 24 hours with pricing, availability, and technical recommendations.
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GR38 flexible jaw coupling
