Account
Inquiry
You’re looking at a range of R-series deep groove ball bearings covering bore diameters form 4.763mm up to 19.050mm, with outer diameters hitting 41.275mm at the top end, and we stock these in open, shielded, or sealed configurations depending on what your housing and contamination risk look like.
These are single-row radial bearings with a zero-degree contact angle, so they’re not built for axial loads—stick to radial or light combined loads, and they’ll handle ratings from 0.268kN to 7.753kN depending on the size you pick, which is pretty much standard for automotive alternators, electric motors, and water pump shafts.
3, we offer precision grades from P0 up to P4, and noise levels run Zv1 through Zv4, so if you’re putting these into a quiet-running medical device or a solar tracker gearbox, you’ll want to confirm which vibration spec matters—most buyers go with P5 or P6 for general machinery, but teh tighter tolerances are there if you need them.
What it does is use standerd bearing steel—nothing exotic—so the corner radius sits between 0.1mm and 0.6mm, and the width varies from 3.18mm to 11.11mm, which means you can swap these into existing R-series housings without re-engineering the bore, but check the seal type because a fully sealed unit has slightly different speed limits than an open one.
We usually have stock on the common sizes like R4, R6, and R8, but for something like R168 or R188, you’ll want to confirm lead time—it’s typically 20 days or so, and our company can supply COAs with HPLC or dimensional data on request for batches that need traceability.
These aren’t suited for high-thrust applicaion or angular contact setups, and the basic static load rating maxes out around 3.6kN, so if you’re pushing into heavy axial loads, you’ll need a different geometry anyway.
We don't have a strict MOQ for standard models like the R3 or R4 — you can start with as few as 10 pieces for sampling. For bulk production orders, we usually recommend 500 pieces per size to keep costs down.
For P4 precision grade bearings, lead time is usually 15-20 working days after order confirmation, depending on the quantity. Standard P0 or P6 grades ship faster, around 7-10 days.
Yes, we can supply mill certificates for the bearing steel and noise level test reports for Zv3 or Zv4 ratings. Just let us know what documentation you need when placing the order.
Yes, the R168 and R188 are available as open, shielded, or sealed versions. If you need the sealed type, we recommend specifying the ZZ or 2RS suffix in your order to avoid confusion.
We pack each bearing individually in oil paper or plastic sleeves, then pack them in sealed plastic bags with desiccant, and finally into sturdy export cartons. For larger quantities, we use wooden pallets with shrink wrap to prevent damage during transit.
