Changzhou LongXiang Gas Spring Co.,Ltd

End fittings are small components, but they determine how a gas spring transfers force into a lid, hatch, guard, or machine frame. A correctly sized gas spring can still bind, wear early, or damage its mounting points when the joint cannot follow the real motion. LONGXIANG GAS SPRING recommends selecting the fitting only after the pivot geometry, available clearance, load direction, and expected service environment are understood.

Why the Joint Type Matters

A gas spring should primarily carry axial load. During opening and closing, however, manufacturing tolerances and bracket movement can introduce angular misalignment. The end fitting must accommodate this movement without forcing the piston rod sideways. Side load increases seal friction, damages the rod surface, and can shorten service life. The connection also has to provide enough strength for peak force, including shock loads and the gas spring’s extension-force tolerance.

Ball Sockets for Moving Geometry

Ball sockets are widely used on vehicle hatches, cabinets, equipment covers, and access panels. The ball joint permits several degrees of angular movement, helping the gas spring follow an arc between two pivot points. It is a practical choice when brackets may not remain perfectly parallel throughout the stroke.

Check the ball-stud diameter, thread size, socket retention method, and operating angle. The socket must not reach its articulation limit at either end of travel. For frequent cycling, specify a secure spring clip or locking retainer and leave enough clearance for installation and removal. View our lift gas spring options when planning a conventional lifting application.

Eyelets for Simple, Strong Connections

Eyelets connect to a pin or bolt and provide a compact, economical joint. They suit applications with accurately aligned brackets and limited angular change. Metal eyelets are preferred where higher loads, elevated temperatures, or long service life are expected; engineered plastic versions can reduce noise and weight in lighter-duty equipment.

The pin should fit without excessive play, while still allowing free rotation. Do not clamp the eyelet tightly between bracket faces. Use washers or spacers when necessary, and verify that the bolt shoulder—not the threaded section—carries the bearing load. LONGXIANG GAS SPRING can help match eyelet bore, thread, and material to the specified force range.

Clevises for Controlled Pin Joints

A clevis surrounds a central mounting tab and uses a transverse pin. This arrangement supports the joint on both sides and can provide good resistance to bending. It is common in industrial machinery, agricultural equipment, and guards where a robust, serviceable connection is required.

Clevises allow rotation mainly in one plane, so bracket alignment is important. Confirm clevis width, pin diameter, hole spacing, and the direction of the working arc. If the assembly needs movement in several planes, a ball joint is usually more forgiving.

Four Selection Checks Before Ordering

• Thread compatibility: Match metric or imperial thread, diameter, and usable engagement length.

• Load capacity: Rate the fitting and bracket above the maximum expected gas spring force and any dynamic load.

• Articulation and clearance: Model the complete opening arc and check for interference at full extension and compression.

• Environment: Select corrosion-resistant materials for outdoor, marine, food-processing, or washdown equipment.

Bracket stiffness matters as much as the fitting. Thin sheet metal can deform, changing the pivot position and increasing side load. A prototype should be cycled through the full stroke before production approval. For application review or a custom connection, contact LONGXIANG GAS SPRING with drawings, force, stroke, mounting orientation, and environmental details.

FAQ

Can ball sockets correct poor bracket alignment?

They can accommodate limited angular variation, but they cannot compensate for major offset, a twisted bracket, or an incorrect pivot location.

Should end fittings be lubricated?

Follow the fitting supplier’s guidance. Many joints need little maintenance, while exposed pins may benefit from a compatible lubricant. Keep grease away from the piston rod and seals.

Can I replace an eyelet with a clevis?

Only after checking installed length, pin position, bracket width, articulation, and load capacity. Changing the fitting can alter the effective mounting geometry.

The best connection keeps the force axial, moves freely through the entire stroke, and remains serviceable in its real environment. LONGXIANG GAS SPRING evaluates the gas spring, end fittings, and brackets as one system so OEM designs achieve reliable movement rather than simply matching a thread size.