PRODUCTS
CONTACT US
Heat Cutting Knife Disc Universal Joint Coupling – Quick‑Release Plastic Machine Coupling | 42CrMo Alloy Steel | DIN Standard | Custom
Model Number
Check below, custom
| Color Classification | Description |
|---|---|
| Motor shaft 24-key, 8-cutterhead shaft, 21-pin 6 | Standard option |
| Motor shaft 25-key, 8-cutterhead shaft, 21-pin 6 | Standard option |
| Motor shaft 28-key, 8-cutterhead shaft, 21-pin 6 | Standard option |
| Custom non-standard sizes | Custom-made / non-standard dimensions available |
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
Heat Cutting Knife Disc Universal Joint Coupling – Quick‑Release Plastic Machine Coupling
Factory Direct from Guangdong, China | 42CrMo Alloy Steel | DIN Standard | H7 Precision Bore | Polyurethane Elastic Element | Quick‑Release Clamp Type | Custom Splines & Sizes
Product Overview
The Heat Cutting Knife Disc Universal Joint Coupling is a specialized power transmission component designed for plastic pelletizing machines, hot cutting systems, and underwater pelletizers. Manufactured by Apexcoupling in Dongguan, Guangdong, China, this quick‑release universal joint coupling connects the motor shaft to the rotating knife disc with precision, reliability, and easy maintenance.
Made from 42CrMo alloy steel with a black oxide (blackening) finish, this coupling offers exceptional strength, wear resistance, and a service life up to 5 times longer than ordinary materials. The H7 precision ground bore ensures high concentricity, smooth rotation, and low noise even at high speeds. The polyurethane elastic element provides angular misalignment compensation and vibration damping, protecting the knife disc and motor bearings.
The coupling features a quick‑release clamp‑type mounting, allowing fast and tool‑free replacement of the knife disc or coupling during maintenance. It is available in standard configurations for 24‑spline, 25‑spline, and 28‑spline motor shafts, with 8‑blade disc shaft and 21‑pin connections. Custom non‑standard sizes are also available upon request.
With DIN standard compliance, IP65 protection, and SGS certification, this coupling is the ideal choice for plastic machinery manufacturers, pelletizer OEMs, and maintenance workshops.
📧 Get a Quote: ella@apexcoupling.com
Key Attributes
| Attribute | Value |
|---|---|
| Brand | Apexcoupling |
| Model | Heat Cutting Knife Disc Universal Joint Coupling |
| Coupling Type | Universal Joint Coupling |
| Executive Standard | DIN |
| Elastic Element Material | Polyurethane |
| Vibration Damping | Not Supported |
| Bore Diameter | 6 mm |
| Compensation Type | Angular |
| Surface Coating Material | Black Oxide (Blackening) |
| Province | Guangdong |
| City | Dongguan |
| Surface Treatment | Blackening |
| Customizable Dimensions | Other Customization |
| Place of Origin | Mainland China |
| Protection Level | IP65 |
| Maintenance Interval | 100 hours |
| Product Certification | SGS |
| Installation Method | Clamp Type |
| Overload Protection | Not Supported |
| Inner Diameter | 6 mm |
Available Color Classifications / Shaft Configurations
The heat cutting knife disc universal joint coupling is available in the following standard configurations:
| Configuration | Motor Shaft | Knife Disc Shaft | Pins |
|---|---|---|---|
| Option 1 | 24 Splines | 8‑Blade Disc Shaft | 21 Pin 6 |
| Option 2 | 25 Splines | 8‑Blade Disc Shaft | 21 Pin 6 |
| Option 3 | 28 Splines | 8‑Blade Disc Shaft | 21 Pin 6 |
| Custom | Non‑standard sizes available |
Please specify your motor shaft spline count and knife disc shaft configuration when ordering. Custom splines, bores, and pin arrangements can be produced according to your drawing.
Key Features
| Feature | Benefit |
|---|---|
| 42CrMo Alloy Steel | High strength, toughness, and wear resistance – service life up to 5× longer than ordinary materials |
| H7 Precision Bore | Ground and lapped for high concentricity, smooth rotation, and low noise at high speed |
| Polyurethane Elastic Element | Angular misalignment compensation, vibration damping, and electrical insulation |
| Quick‑Release Clamp Type | Fast, tool‑free replacement of knife disc or coupling – minimises downtime |
| Black Oxide Finish | Corrosion resistance and professional appearance |
| DIN Standard | Manufactured to internationally recognised standards for interchangeability |
| IP65 Protection | Dust‑tight and water‑jet resistant for harsh plastic processing environments |
| SGS Certified | Quality and safety assurance |
| Custom Splines & Sizes | Available for 24, 25, 28 spline motor shafts and custom configurations |
| Factory Direct | Competitive pricing and stable supply from Dongguan, China |
Technical Specifications
| Parameter | Details |
|---|---|
| Product Name | Heat Cutting Knife Disc Universal Joint Coupling |
| Brand | Apexcoupling |
| Type | Universal Joint Coupling |
| Standard | DIN |
| Material | 42CrMo Alloy Steel |
| Elastic Element | Polyurethane |
| Bore Diameter | 6 mm (customizable) |
| Inner Diameter | 6 mm |
| Compensation Type | Angular |
| Vibration Damping | Not Supported |
| Surface Treatment | Black Oxide / Blackening |
| Installation Method | Clamp Type (Quick‑Release) |
| Protection Level | IP65 |
| Maintenance Interval | 100 hours |
| Overload Protection | Not Supported |
| Certification | SGS |
| Place of Origin | Dongguan, Guangdong, China |
| Customization | Available – splines, bores, pins, lengths |
Applications
This heat cutting knife disc universal joint coupling is specifically designed for:
Plastic Pelletizing Machines – Hot cutting, underwater pelletizing, strand pelletizing
Plastic Granulators – Knife disc drives and rotor connections
Recycling Lines – Plastic recycling and reprocessing equipment
Extrusion Lines – Downstream pelletizing and cutting systems
Masterbatch Production – Colour and additive masterbatch lines
Compounding Lines – Polymer compounding and blending equipment
Plastic Machinery Repair – Replacement couplings for existing pelletizers
OEM Plastic Machinery – Custom couplings for new machine builds
Customization Options
Apexcoupling offers extensive customization for the heat cutting knife disc universal joint coupling:
Custom motor shaft splines: 24, 25, 28, or other spline counts
Custom knife disc shaft: 8‑blade, 6‑blade, or other configurations
Custom pin arrangements: 21‑pin, 6‑pin, or other
Custom bore diameters and lengths
Alternative materials: 42CrMo, stainless steel, alloy steel
Alternative elastic element materials: PU, NBR, Viton
Surface treatments: black oxide, zinc plating, nickel plating
Laser marking / custom logo
Drawing‑based production
OEM / ODM / OBM with your branding
📧 Send your drawing or requirements to: ella@apexcoupling.com
Why Choose Apexcoupling?
🏭 Factory Direct in Dongguan, China – Integrated manufacturing and trading, competitive pricing
🔩 Premium 42CrMo Alloy Steel – Service life up to 5× longer than ordinary materials
⚙️ H7 Precision Bore – Ground and lapped for high concentricity and low noise
⚡ Quick‑Release Clamp Type – Fast, tool‑free maintenance and knife disc replacement
📐 Full Customization – 24/25/28 splines, 8‑blade disc, 21‑pin, custom sizes
✅ SGS Certified & DIN Standard – Quality assurance and interchangeability
📦 Fast Delivery – Factory stock and efficient production for urgent orders
💬 Expert Technical Support – We help you select the correct coupling for your pelletizer
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.
Product Tags: heat cutting knife disc universal joint coupling, quick release plastic machine coupling, pelletizer knife disc coupling, 42CrMo universal joint, DIN standard universal joint, H7 precision bore coupling, plastic granulator coupling, hot cutting coupling, custom spline universal joint, Apexcoupling
quick release plastic machine coupling
pelletizer knife disc coupling
42CrMo universal joint
DIN standard universal joint
H7 precision bore coupling
plastic granulator coupling
hot cutting coupling
custom spline universal joint
Product Show
heat cutting knife disc universal joint coupling
