SKF WR 8-2Z inch deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Inch deep groove ball bearings
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Description
SKF WR 8-2Z belongs to inch deep groove ball 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 WR 8-2Z and any equivalents.
For equipment built around inch-dimension shafts, SKF WR series deep groove ball bearings offer a single-row solution. They appear in imported machinery, machine tools and transmissions where both housing and shaft follow inch sizing. The deep groove and ball configuration handles moderate radial and axial loads in either direction, with low torque and suitable rotational speed.
Reading the code helps you order correctly. WR marks the inch deep groove ball bearing line; the following number fixes the size; a suffix such as Z or 2Z tells you about shielding. Take WR 8-2Z: 8 is the size, 2Z means a shield on each side. A single Z means one shield, and no suffix means the bearing is open. Shields keep dust out and hold lubricant in, but they are not liquid-tight.
You will find these bearings on inch-shaft equipment: machine tools, pumps, fans, conveyors and imported transmissions. Maintenance teams in production lines, workshops and food or chemical plants use them when a shaft cannot be modified. Because inch sizes rarely have an exact metric match, always confirm shaft and housing diameters before selecting.
Selection starts with the working environment. Choose an open bearing for clean conditions with frequent relubrication. Use one Z shield where dust is present, and two 2Z shields for higher contamination risk. The WR series is not intended for pressure washing or immersion. When mounting, keep the shaft clean and free of burrs, apply force to the correct ring, and check housing alignment. Correct lubrication and internal clearance support service life.
Inch bearings are identified by nominal size, and codes differ between makers. The same size may carry different letters or suffixes depending on the brand. When replacing, compare the main dimensions and protection type rather than trusting the code alone. If anything is unclear, send a photo or the marking engraved on the bearing and we will verify it.
To order this bearing or check if the WR series fits your equipment, contact us on WhatsApp or by email. Share the complete code, shaft and housing dimensions, and the protection your application requires. MR Industrial Accessories LLC serves customers across the United States and in several Latin American countries, and our team can suggest equivalents and help you choose.
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 Z suffix mean on a WR bearing?
- Z indicates a metal shield on one side. That shield limits dust and particle entry, but it is not a tight seal. If the code shows 2Z, both sides are protected. For wet or washdown environments, this is not the right choice.
- How do I know if I need an inch or a metric bearing?
- Measure the shaft and housing diameter with a caliper. If the readings match inch fractions, such as 1/2" or 5/8", an inch bearing is required. If they match round millimeters, use a metric one. Never force a metric bearing onto an inch shaft, as it can spin.
- Can I replace a WR bearing with one from another brand?
- Yes, provided the main dimensions match: inner diameter, outer diameter and width, plus the type of protection. Nomenclatures vary between manufacturers, so do not rely only on the code. Compare actual measurements or consult us with the old code and we will help you find the equivalent.