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When a loose or worn linkage joint causes vibration, misalignment, or premature wear in your mechanical system, the root cause is often an undersized or low-grade rod end bearing. Engineers, fabricators, and DIY builders working on steering assemblies, suspension linkages, industrial machinery, and robotics need a rod end bearing that holds precise alignment under dynamic loads — without play or slop developing over time.
These female series rod end bearings feature an internally threaded shank (right-hand thread) that accepts a matching bolt or stud, paired with a spherical plain bearing housed in a forged steel body. Available in sizes from M4 × 0.7mm through M36 × 2mm (approximately 0.16 in to 1.42 in nominal diameter), the bearing inner ring is typically 10–36mm in diameter depending on the selected variant. The spherical ball allows angular misalignment of typically ±8°–12°, accommodating shaft deflection without binding.
Typical use cases include: CNC machine axis linkages requiring repeatable positioning, automotive steering tie-rod replacements where precise articulation is critical, and industrial actuator end connections on hydraulic or pneumatic cylinders where angular compensation prevents side-loading.
| Thread Type | Female (internal), Right-Hand |
|---|---|
| Thread Standard | Metric (ISO) |
| Available Sizes | M4 × 0.7mm to M36 × 2mm (13 sizes) |
| Nominal Diameter Range | 4mm–36mm (approx. 0.16 in–1.42 in) |
| Angular Misalignment | Typically ±8°–12° (varies by size) |
| Body Material | Forged Steel |
| Bearing Insert | Spherical Plain Bearing (fish-eye type) |
| Surface Finish | See variant options |
| Bore Diameter | See variant options |
| Overall Length | See variant options |
| Load Rating (Dynamic) | See variant options |
| Quantity per Order | 1 Pcs |
Match the thread size and pitch to your existing bolt or stud. For example, if your linkage uses an M10 bolt with 1.25mm pitch, select the M10 × 1.25mm variant. Also verify the bore diameter of the spherical insert fits your connecting pin or shaft. When in doubt, measure the male thread on your hardware and cross-reference with the size options above.
Load capacity varies by size — larger diameter variants (M20 and above) are rated for significantly higher radial and axial loads than smaller sizes (M4–M8). For specific dynamic and static load ratings for your chosen size, please contact us to confirm before use in safety-critical applications.
The surface finish provides protection against light moisture and mild environmental exposure. For continuously wet, marine, or chemically aggressive environments, we recommend inspecting and re-lubricating the bearing periodically, or contacting us to confirm suitability for your specific conditions.
Yes, provided the thread size, pitch, and bore diameter match your existing hardware. These bearings follow ISO metric standards, making them compatible with most metric linkage systems. Always verify the overall length and shank dimensions against your application's clearance requirements before installation.
The fish-eye spherical plain bearing insert typically allows ±8°–12° of angular misalignment depending on the size variant. This range accommodates shaft deflection and minor misalignment in linkage systems without inducing binding or edge loading on the bearing race.
Periodic lubrication is recommended for extended service life, especially under high-cycle or high-load conditions. Apply a suitable grease to the spherical insert through the lubrication port (if present on your size variant) or disassemble and re-grease at regular service intervals. Contact us to confirm lubrication specifications for your selected size.
Female series rod end bearings have an internally threaded (female) shank — a bolt or stud threads into the bearing body. Male series rod end bearings have an externally threaded (male) shank that threads into a female-threaded clevis or bracket. Choose female series when your mounting point accepts a bolt, and male series when your bracket has a threaded hole.
