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Constant Velocity (CV) CV-Shafts.

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Enrique Requena SL

On 12/03/2025

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CONSTANT VELOCITY (CV) CV-SHAFTS : TECHNOLOGY, APPLICATIONS, AND BENEFITS.

At Enrique Requena SLU, we specialize in the distribution of GKN constant velocity (CV) CV-shafts, delivering OEM-quality solutions for industrial and commercial applications. As official GKN distributors, we offer original components at highly competitive prices, ensuring maximum efficiency and durability for your machinery.

If you require high-performance CV-shafts and driveshafts, we provide precision-engineered solutions designed for optimal torque transmission, reduced vibrations, and extended operational lifespan.

– FUNCTION AND DESIGN OF GKN CV-SHAFTS.

GKN constant velocity driveshafts are engineered for homokinetic torque transmission, maintaining constant angular velocity across input, intermediate, and output shafts. Unlike universal driveshafts, they do not require strict mounting conditions, offering greater flexibility and efficiency in various applications.

There are two main types of GKN CV-shafts:

Fixed joints (RF) – Allow shaft angles up to 40° (or 50° in special designs) but do not permit axial movement.
Plunging joints (VL) – Allow shaft angles up to 18° (or 22° in special designs) and feature integrated length compensation with minimal plunge resistance.

These advanced transmission components are widely used in both industrial machinery and specialized vehicles, ensuring precise power delivery with minimal mechanical stress.

– KEY ADVANTAGES OF GKN CV-SHAFTS.

Constant velocity at all angles – Eliminates fluctuations in torque transfer.
Low plunge resistance – Reduces bearing loads and friction for improved efficiency.
Vibration-free at high speeds – Supports smooth operation up to 8,000 rpm.
No alignment required – Simplifies installation and reduces maintenance needs.
Compact and space-efficient design – Enables short-coupled configurations.
Lifetime lubrication – Maintenance-free operation in most applications.

– SELECTION CRITERIA FOR CV-SHAFTS.

Choosing the right GKN CV-shaft depends on multiple factors:

Mounting length (EL) – Short shafts (Types 104, 105, 200) vs. long tubular shafts (≥700mm).
Plunge requirement – Long plunge applications should use Types 116, 117, or 118.
High-speed applications – Metal-covered boots (Type 105) recommended.
Bending angle – Fixed joints (e.g., Type 116) allow angles exceeding 18°.
Torsional stiffness – For higher stiffness, use tubular shafts (e.g., Type 108).
Mounting position – For vertical installations, fixed joints (Type 114) should be positioned at the bottom.

⚠ Important considerations:

CV-shafts must be selected based on torque, angle, and speed.
Continuous operation must not exceed peak values.
For angles greater than 8°, consult the manufacturer.
Oil-tight flanges are required when using disc joints without closure caps.

– INDUSTRIAL APPLICATIONS OF GKN CV-SHAFTS.

GKN constant velocity shafts and driveshafts are used in diverse industrial, energy, and vehicle applications, including:

✔ Filling and packing machines
✔ Soil compactors and construction equipment
✔ Textile and machine tool industries
✔ Mill drives and printing machines
✔ Wind turbines and renewable energy systems
✔ Marine applications and metro trains
✔ Commercial vehicles and pump drives

Their robust design and precision engineering make them essential in high-performance machinery, ensuring reliable power transmission in demanding environments.

– TRANSPORT, INSTALLATION, AND MAINTENANCE OF CV-SHAFTS.

Handling and Storage

To prevent damage, GKN CV-shafts must be stored horizontally, ensuring that boots and metal caps remain undistorted. Avoid excessive bending beyond permitted angles.

– Mounting Instructions

Flange surfaces must be clean and degreased before installation.
Use only quality 10.9 screws and tighten them according to manufacturer specifications.
Washer plates must be installed with disc joints to prevent cap deformation and ensure proper flange pressure.
Support the driveshaft during installation to avoid exceeding permissible bending angles.

– Maintenance and Service

GKN CV-shafts are pre-lubricated for life and require minimal maintenance.
Regularly inspect boots and tightening torque to prevent failures.
If grease leakage occurs, replace boots and lubricant immediately to avoid joint damage.
For slip units, lubrication intervals should be adjusted to match operating conditions using Optimol Paste MP3.

– WHY CHOOSE GKN CV-SHAFTS FROM ENRIQUE REQUENA SLU?

At Enrique Requena SLU, we provide premium GKN CV-shafts designed for superior durability, efficiency, and mechanical precision. As official distributors, we offer: