SKF SA 30 ES spherical plain bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Spherical plain bearings and rod ends
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Description
SKF SA 30 ES 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 SA 30 ES and any equivalents.
The SKF SA ES line covers rod end bearings with a male threaded shank, built as radial spherical plain bearings. They handle radial loads while allowing the angular movement and self-alignment that linkages, cylinders and steering or suspension components need. MR Industrial Accessories LLC supplies this SKF series and helps buyers match the right bore and thread to the job.
Reading the code is the fastest way to confirm what you are ordering. SA tells you the shank is male and threaded; ES tells you the internal construction uses a hardened steel insert with a cage of anti-friction material and lubrication already in place. The number that follows is the nominal bore in millimeters, so SA 15 ES, SA 17 ES, SA 20 ES, SA 25 ES and SA 30 ES correspond to bores of 15, 17, 20, 25 and 30 mm. The ES suffix is fixed and always describes the same internal arrangement.
Typical installations include hydraulic and pneumatic cylinders, steering arms, suspension on agricultural equipment, earthmoving machinery and shafts that oscillate. Automatic doors, cranes and lifting gear also use them. Because the bearing self-aligns, the shank is not forced into bending when parts are slightly out of line, which makes assembly easier in real-world mounting conditions.
When specifying a replacement, work from three points: bore diameter, thread type (male or female) and the radial load the joint will see. Sealing keeps dust and moisture out of the contact area; in dirty or wet environments, adding seals or boots is worth considering. Most versions carry permanent lubrication, though severe duty may call for re-greasing. The shank and its support should stay within the permissible oscillation angle so the insert is not damaged.
SKF SA ES rod end bearings can be swapped with equivalents from other makers that use the same dimensional designation, including comparable European and Asian series. Before ordering, confirm bore diameter, thread pitch and inner ring width against the part you are removing. Our team can review compatibility and suggest alternatives for your equipment.
Have the full part number ready and send it over WhatsApp or email. We respond quickly, help you confirm the size and point you to equivalents when needed, so the replacement fits the first time.
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 ES suffix indicate on an SA rod end bearing?
- It identifies the internal build: a hardened steel insert plus a cage of anti-friction material, supplied with lubrication. This construction suits radial loads and oscillating motion. External dimensions stay the same; only the contact arrangement differs.
- SA or SI, which one do I need?
- SA has a male threaded shank, SI has a female thread. Pick based on the mounting space and how the joint is fastened. Bore diameter and load capacity are comparable between the two, so ask us if the choice is not obvious.
- Are other brands a valid substitute?
- Yes, provided bore diameter, thread pitch and inner ring width line up. Dimensional designations tend to be common across manufacturers. Measure the equipment before you install anything. We can help you compare options.