SKF SI 40 ES-2RS spherical plain bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Spherical plain bearings and rod ends
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Description
SKF SI 40 ES-2RS belongs to spherical plain bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for SI 40 ES-2RS and any equivalents.
The SKF SI..ES-2RS line covers radial rod ends built with a male threaded shank and sealing on both faces. They carry radial loads while allowing the oscillation and angular movement that linkages need, and the spherical design absorbs misalignment between parts that are not perfectly in line. This makes them a practical choice wherever a joint has to articulate and stay protected from dirt.
Reading the code helps you order the right unit. SI marks a radial rod end with a male shank. The digits that follow give the bore diameter in millimeters, so SI 30 ES-2RS takes a 30 mm bore. ES refers to the steel spherical rod end with a two-piece cage, and 2RS tells you both sides carry double-lip seals that hold lubricant in and keep dust and moisture out.
Typical uses sit in agriculture, metallurgy, material handling and automotive work. You will find these joints on steering arms, hydraulic cylinders, chain tensioners, suspension systems, road machinery and earthmoving equipment. Agricultural linkages such as seeders and harvesters also rely on them, as does any industrial mechanism that must move freely while alignment shifts.
Selection comes down to bore diameter, shank type (male or female) and the direction of the load. The 2RS seal suits moderate dust or moisture; where liquids or abrasive dirt are present, add extra protection. Fit the shank perpendicular to the oscillation axis and leave the joint free to move through its angle. Sealed versions carry their lubricant for life, though severe duty may call for relubrication. Keep alignment in check to avoid side loads.
Rod ends in this series interchange with equivalents from other makers that share the same dimensional designation. For a quote, send the full part number along with your working conditions so compatibility can be confirmed. MR supplies SKF and can point you to equivalent series. Two rod ends with the same diameter do not necessarily share load capacity, so verify the exact number before substituting. Message us on WhatsApp or by email with the part number and quantity, and we will reply with the quote and help you pick the right rod end.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What does the 2RS suffix mean on an SKF rod end?
- It means the joint is sealed on both sides with double-lip seals. Dust, water and contaminants are kept out while lubricant stays in, which helps the rod end last in tough conditions.
- Do SI..ES-2RS rod ends need relubrication?
- Sealed 2RS units arrive pre-lubricated and normally run without added grease. High loads or high speeds can change that, so review your case with us or the SKF catalog.
- Male or female shank: how do I decide?
- It depends on the space you have and how the joint connects. A male shank (SI) threads into a hole, while a female version (SIL) takes a bolt. Load direction and ease of assembly also matter. Send a sketch or photo on WhatsApp if you want a second opinion.