Hydraulic cylinder rod ends

1. Construction and Bearing Components

Hydraulic rod ends are designed with integrated radial spherical plain bearings, typically from the GE..-LO or GE..-DO series.

• Contact Surfaces: The standard sliding interface consists of steel-on-steel (inner and outer rings).
• Maintenance-Free Options: For specific series like GIHRK..-DO and GF..-DO, maintenance-free bearings (e.g., GE..-UK or GE..-FW) are available, eliminating the need for regular lubrication.
• Mounting Methods: These components can be either screw-mounted via the threaded shank or welded into place using circular or rectangular welding faces.

2. Structural Design and Slotting

The design of the rod end housing varies depending on the diameter to ensure optimal clamping and stability:

• Double-sided slots: Applied to GIHRK and GIHNRK series for diameters d ≤ 50mm.

• Single-sided slots: Applied to GIHRK for d ≥ 60mm and GIHNRK for d ≥63mm.

• Securing Mechanism: The internal bearings are held in place by retaining rings. For threaded versions, a clamping device featuring two socket head screws (per DIN EN ISO 4762) is integrated into the shank to ensure a secure fit.

3. Applications and Load Capabilities

Hydraulic rod ends are engineered for high-performance mechanical links:

• Load Direction: They can support radial forces in both tension and compression.

• Force Transmission: They facilitate the transmission of motion and power with minimal torque levels and are highly suitable for alternating radial loads.

• Space Optimization: The GIHRK..-DO series is specifically designed for hydraulic cylinders where a compact linkage distance is required to maximize stroke utilization.

4. Industry Standards and Compliance

Specific series are manufactured to meet rigorous international engineering standards:

• GIHNRK..-LO Series: These conform to DIN 24338 and ISO 6982.

• System Integration: They are the standard choice for hydraulic cylinders built to CETOP RP 58 H recommendations and various DIN/ISO standards (such as DIN ISO 6022 and DIN 24333).