Rod End Bearings PHSB4 1/4″ Bore Pre-Lubricated 4pcs Pack with Jam

Description

Product Overview

The PHSB4 rod end bearing series is engineered to meet the demanding requirements of modern industrial machinery, offering a precise 1/4‑inch bore combined with a 1/4‑28 right‑hand female thread. Each bearing features a spherical rod end body forged from high‑grade #45 steel, providing exceptional strength and resistance to wear. The bearing’s internal ball joint is made from hardened bearing steel, and a copper lock ring secures the balls in place, preventing disengagement even under heavy shock loads. With a static load capacity of 7.7 kN and a dynamic load capacity of 4.5 kN, these bearings can sustain substantial forces while maintaining smooth, low‑noise operation.

Pre‑lubrication is applied during manufacturing, using a high‑performance grease that penetrates the ball raceways and the copper lock ring. This lubrication reduces friction, extends service life, and eliminates the need for immediate post‑installation greasing. The design also incorporates a maximum angular misalignment of 13 degrees, allowing the bearing to self‑align within the assembly and compensate for minor shaft deflections, which is critical in hydraulic cylinders and CNC spindle applications.

Each package contains four identical rod end bearings and four matching jam nuts. The jam nuts are machined from corrosion‑resistant steel and feature a fine thread that locks securely onto the 1/4‑28 female thread, simplifying installation and ensuring a tight, vibration‑free connection. The compact dimensions—3.82 × 2.24 × 0.43 inches—make the bearings easy to store and handle, while the total package weight of 4.66 oz keeps shipping costs low.

Manufactured by Yeebyee, a reputable supplier known for precision engineering, the PHSB4 bearings have earned a strong reputation among engineers and maintenance professionals. Customer reviews consistently highlight the product’s durability, low noise level, and reliable performance in a variety of environments, from heavy‑duty forging machines to lightweight lawn tractors. The bearings are also compliant with industry standards for dimensional accuracy and material quality, ensuring interchangeability with other leading brands.

Beyond the core mechanical specifications, the PHSB4 bearing’s design emphasizes ease of maintenance. The pre‑lubricated state means that routine servicing can be performed without the need for additional greasing steps, and the jam nuts provide a quick‑release mechanism for disassembly when replacement or inspection is required. This combination of performance, reliability, and serviceability makes the PHSB4 an ideal choice for both new equipment builds and retrofits of existing machinery.

Usage

These rod end bearings are widely used across a spectrum of industrial and commercial applications. In hydraulic cylinder assemblies, the bearing’s self‑aligning capability accommodates the slight angular deviations that occur during piston movement, reducing wear on the cylinder rod and extending the life of the entire system. CNC equipment benefits from the low‑noise, high‑precision characteristics of the PHSB4, where accurate positioning and repeatability are essential for machining complex parts.

For forging machine tools, the bearing’s high static load capacity allows it to absorb the intense forces generated during metal shaping processes, while the pre‑lubricated design minimizes heat buildup and prevents premature failure. Power tools such as impact wrenches and portable drills also gain from the bearing’s robust construction, as the ability to handle dynamic loads and resist corrosion ensures reliable operation in harsh job‑site conditions.

In the automotive sector, the PHSB4 is suitable for suspension linkages, steering knuckles, and other components that require precise articulation and durability. Marine applications, including boat winches and steering systems, benefit from the bearing’s corrosion‑resistant materials and sealed lubrication, which protect against saltwater exposure. Additionally, the bearing’s compact size makes it an excellent fit for automation equipment, robotic arms, and conveyor systems where space constraints demand a small yet powerful component.

Why Choose Us

Choosing the PHSB4 rod end bearing means selecting a product that combines rigorous engineering standards with practical features designed for real‑world performance. Yeebyee’s commitment to quality is reflected in the use of premium #45 steel for the outer body and hardened bearing steel for the internal balls, ensuring that each bearing can withstand the stresses of demanding applications without deformation or premature wear.

Our pre‑lubricated technology eliminates the guesswork associated with manual greasing, delivering consistent lubrication that protects against corrosion and reduces friction from the moment the bearing is installed. This not only shortens assembly time but also lowers the total cost of ownership by extending service intervals and reducing downtime.

Customer support is a cornerstone of our service philosophy. Our dedicated technical team is available 24 hours a day, seven days a week, ready to answer questions, provide installation guidance, and troubleshoot any issues that may arise. We stand behind every bearing with a satisfaction guarantee, and our rapid response commitment ensures that you receive the assistance you need when you need it.

In addition to the technical advantages, the inclusion of four jam nuts per pack simplifies inventory management and reduces the need for additional fasteners. This all‑in‑one packaging approach is especially valuable for manufacturers who require consistent component sets for batch production, as it streamlines the supply chain and minimizes the risk of missing parts.

Key Features

• High‑strength #45 steel body and hardened steel balls provide exceptional load capacity and durability.
• Pre‑lubricated with premium grease for immediate low‑noise operation and extended service life.
• 13° maximum angular misalignment allows self‑alignment, reducing stress on connected shafts.
• Corrosion‑resistant copper lock ring and jam nuts protect against moisture and harsh environments.
• 24‑hour responsive customer support ensures quick assistance and reliable after‑sales service.

FAQ

What is the maximum load this bearing can handle?

The PHSB4 bearing is rated for a static load capacity of 7.7 kN and a dynamic load capacity of 4.5 kN, making it suitable for heavy‑duty applications such as hydraulic cylinders and forging equipment.

Is the bearing compatible with standard 1/4‑28 jam nuts?

Yes, the bearing includes four matching jam nuts that are specifically sized for the 1/4‑28 right‑hand female thread, ensuring a secure fit without the need for additional hardware.

Can the bearing be used in marine environments?

Absolutely. The copper lock ring and pre‑lubricated grease provide excellent corrosion resistance, allowing the bearing to perform reliably in saltwater and other harsh marine conditions.

How do I install the bearing correctly?

Begin by cleaning the mounting surface, then insert the bearing into the housing ensuring the spherical end aligns with the shaft. Tighten the jam nut by hand until it is snug, then use a wrench to secure it firmly, taking care not to over‑tighten which could damage the thread.

What warranty does Yeebyee offer on this product?

Yeebyee provides a one‑year limited warranty covering material defects and workmanship. If you encounter any issues within this period, contact our support team for a replacement or repair solution.