JFK relubricable rod ends
JFK rod ends
- Male or female threaded shank
- Integrated grease nipple
- Regular maintenance
JFK relubricable rod ends are articulated joints consisting of a threaded shank and a spherical head housed in a corresponding spherical bearing seat, allowing rotation and angular oscillation to accommodate misalignment between the connected components. They feature an integrated grease fitting for periodic relubrication of the spherical bearing seat, maintaining smooth movement over time and reducing friction-induced wear.
Thanks to the combination of a threaded shank and spherical head, JFK relubricable rod ends transmit tensile and compressive forces along rods and tie rods, while allowing the rotation and angular oscillation required when the connected components are not perfectly aligned. They are available with male or female threaded shanks to suit different mounting configurations. They are available in two material combinations (steel/steel and steel/bronze) and, on request, in AISI 316 stainless steel. All sizes comply with DIN 648 K and UNI ISO 12240 standards.
Versions
How to choose the right rod end
Rod ends with male threaded shank
The shank terminates in an external thread for direct screwing into a threaded hole in the component to be connected. Available with right-hand or left-hand threads for use in adjustable tie rods with double-ended connections. Series: SA..E / SA..ES (steel/steel) and JAM (steel/bronze).
Rod ends with female threaded shank
The shank features an internal threaded hole for mounting onto a threaded stud or through-bolt of the component to be connected. This solution is suitable when the connecting component is already provided with an external thread. Series: SI..E / SI..ES (steel/steel) and JAF (steel/bronze).
Performances
Design and performance features
Hardened spherical head housed in a spherical bearing seat with an integrated grease fitting for periodic relubrication.
Angular misalignment compensation
The spherical head housed in the corresponding spherical bearing seat allows rotation about the shank axis and angular oscillation to accommodate misalignment between the connected components.
Male or female shank, right or left
Available with male or female threaded shanks, and with right-hand or left-hand threads for use in adjustable tie rods with opposed connections. The steel/bronze version features a long external thread for adjustment.
Lubrication
The grease fitting allows periodic relubrication of the spherical bearing seat, maintaining smooth movement over time and reducing friction-induced wear.
Hardened steel for the shank and spherical head
The shank and spherical head are made of hardened steel to ensure resistance to tensile and compressive loads and wear, even under dynamic loading conditions. In the steel/steel combination, the sliding surfaces are hardened and treated with running-in lubricant; in the steel/bronze version, the hardened and chrome-plated steel spherical head oscillates against a bronze ring.
Suitable for axial tensile and compressive loads
The shank-to-spherical-head configuration effectively transmits tensile and compressive forces along the axis of the rod or tie rod to which it is connected. Particularly suitable for applications involving alternating and shock loads.
Mounting
Installation of relubricable rod ends
Installation is carried out by screwing the shank into the connecting element, applying the specified tightening torque for the thread. After installation, apply the initial grease charge through the integrated grease fitting before putting the component into service.
Mounting methods
- Screwing and securing the shankScrew the shank into the connecting element until fully seated, then secure it with a locknut or equivalent locking system to prevent loosening under vibration.
- Initial and periodic greasingApply the initial grease charge through the integrated grease fitting before putting the component into service, then repeat the operation at the specified intervals according to the operating conditions.
Technical data
- Thread
- Right-hand or left-hand metric, in accordance with DIN 648 / ISO 12240-4
- Locknut tightening torque
- According to the thread diameter; see the dimensional table
- Initial greasing
- Through the integrated grease fitting, before commissioning
Applications
Applications
Components and application support for every industrial environment.
Industrial automation
Control rods and tie rods in motion systems where periodic relubrication is compatible with scheduled maintenance plans.
Construction Equipment
Hydraulic and pneumatic cylinders, and connection systems between components subject to high loads and dynamic misalignment.
Metal Fabrication / Machining Industry
Motion and connection systems between mechanical components requiring angular compensation with the option of periodic relubrication.
Agriculture
Tie rods and adjustment rods on agricultural machinery, where demanding operating conditions make periodic relubrication beneficial.
Automotive / Motorcycles, Trucks & Buses
Components for suspension, transmission and linkage systems designed for intensive duty cycles, vibration and compact spaces.
Hydraulic and pneumatic cylinders
Bushings, spherical plain bearings and seals for precise guidance of rods and joints, even under load.
Renewable Energy
Bearings and motion systems for wind power, solar installations and long-lasting energy technologies.Technical documents
Contacts
Request information about this product
Complete the form for technical information, quotations or trial samples.
Related products
JFK maintenance-free rod ends
JFK maintenance-free rod ends are articulated joints featuring the same rod-to-spherical-head configuration as the relubricatable versions, but with a spherical bearing seat lined with a PTFE-based self-lubricating composite material instead of a…
JFK radial spherical plain bearings
JFK radial spherical plain bearings are mechanical components designed to withstand high radial loads, such as those encountered in hydraulic and pneumatic cylinders. The design consists of an inner ring with a…