FAQ (Frequently Asked Questions)

Q1: Do PHS bearings require regular lubrication?
A:​ Models with PTFE liners​ are designed for maintenance-free operation and do not require regular lubrication. Standard steel-on-steel models may require periodic greasing depending on the operating environment .
Q2: What is the difference between PHS and other rod end series?
A:​ The "PHS" designation typically refers to a specific series with a female thread and a standardized size range (e.g., PHS5, PHS8, PHS10). It is often compared to series like "POS" (male thread) or "K" series, with the main difference being the thread type and housing design .
Q3: Can PHS bearings handle high temperatures?
A:​ Standard models typically operate in a range of -20°C to +80°C. For higher temperatures, specialized high-temperature variants with different materials or lubricants are required .
Q4: How do I select the right size?
A:​ Selection is based on the bore diameter (d) and thread size (e.g., M8x1.25). Ensure the chosen size matches the load requirements and the diameter of the connecting rod or shaft .
Q5: Are they suitable for high-speed rotation?
A:​ PHS bearings are primarily designed for oscillating motion​ and slow rotation. They are not typically recommended for continuous high-speed rotation like ball bearings, as this can lead to accelerated wear of the spherical surface.