JFK roller recirculating linear guides
JFK linear guides
- Extremely high load capacity
- Maximum rigidity
- Shock and vibration resistance
JFK roller recirculating linear guides, also known as roller guides or roller linear guides, are a high-performance solution for linear motion systems requiring high load capacity, rigidity, and precision. Unlike ball versions, they use cylindrical rollers that provide a larger contact surface, allowing them to support higher loads and offer greater resistance to deformation.
Particularly suitable for heavy-duty applications and machinery where stability and precision must be maintained even under high loads, JFK roller recirculating linear guides offer very high load capacity thanks to the rollers’ line contact, high rigidity, excellent resistance to shock and vibration, and smooth, controlled linear motion even under the most demanding operating conditions.
Performances
Design and performance features
Cylindrical recirculating rollers and hardened profiled rails for the optimal combination of load capacity, rigidity, and precision in the most demanding applications.
Extremely high load capacity for heavy-duty applications
The line contact of cylindrical rollers provides a significantly larger contact surface than balls, allowing much higher loads to be supported in all directions.
Maximum structural rigidity of the system
The line-contact geometry minimizes deformation under load, ensuring dimensional stability and positioning accuracy even under high loads.
Suitable for the most demanding applications
The robust design and high dynamic load capacity make these guides particularly resistant to shock, vibration, and impact loads typical of heavy-duty machining.
Smooth operation even under heavy loads
Despite their high load capacity, hardened and ground profiled rails ensure smooth motion and positioning accuracy comparable to ball recirculating linear guides.
Adjustable to eliminate play
Available in different preload classes to eliminate internal play and further increase system rigidity according to the expected loads and operating conditions.
Mounting
Roller recirculating linear guide installation
Installation requires the specified flatness and alignment tolerances of the rail and carriage mounting surfaces to ensure the stated load capacity and positioning accuracy are maintained.
Mounting methods
- Direct rail fixingThe rail is secured using through-bolts on a machined reference surface with the flatness required for the selected accuracy class.
- Carriage installation with preloadThe carriage (or block) is installed with the preload specified for the application, checking for the absence of play and smooth, consistent movement along the entire travel.
Technical data
- Accuracy class
- Normal (N) · High (H) · Precision (P) · Super precision (SP)
- Preload class
- Z0 (none) · Z1 (light) · Z2 (medium) · Z3 (high)
Applications
Applications
Components and application support for every industrial environment.
Heavy-duty machine tools
CNC machining centers, presses, and large machinery where the loads involved exceed the capacity of ball recirculating linear guides.
Presses and molding systems
Applications involving high loads and impact forces, where rigidity and shock resistance are top priorities.Heavy-duty industrial automation
Material handling systems for heavy loads in high-capacity production lines and automated systems.
04 – Earthmoving machinery and heavy-duty equipment
Applications in harsh industrial environments, with high dynamic loads and a need for maximum structural reliability.
Metal Fabrication / Machining Industry
Solutions for machine tools, machining centres, equipment and precision machining.Technical documents
Contacts
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