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When a motor shaft wobbles, a pump runs rough, or a conveyor starts making noise, the culprit is almost always a worn bearing. Engineers, maintenance technicians, and serious DIYers who need a direct-fit replacement for 6300-series deep groove ball bearings can select from the full 6300–6313 size range in one listing — no hunting across multiple SKUs.
Each bearing in this series features a single-row deep groove raceway design machined from bearing-grade steel, with a pressed steel or snap-ring retainer depending on the size. Bore diameters run from 10 mm (0.39 in) on the 6300 up to 65 mm (2.56 in) on the 6313, with outer diameters spanning 35 mm (1.38 in) to 140 mm (5.51 in) and widths from 11 mm (0.43 in) to 33 mm (1.30 in). All dimensions conform to ISO 15 / ABEC standards.
Typical applications include electric motor front and rear end shields, centrifugal pump impeller shafts, gearbox input and output shafts, agricultural equipment spindles, and light industrial conveyor rollers — anywhere a compact radial bearing with moderate axial load capacity is required.
| Bearing Series | 6300 (6300 / 6301 / 6302 / 6303 / 6304 / 6305 / 6306 / 6307 / 6308 / 6309 / 6310 / 6311 / 6312 / 6313) |
|---|---|
| Bearing Type | Single-Row Deep Groove Ball Bearing |
| Bore Diameter (d) | 10 mm – 65 mm (0.39 in – 2.56 in) — See variant options |
| Outer Diameter (D) | 35 mm – 140 mm (1.38 in – 5.51 in) — See variant options |
| Width (B) | 11 mm – 33 mm (0.43 in – 1.30 in) — See variant options |
| Material | Bearing-grade carbon chromium steel (GCr15 equivalent) |
| Cage Type | Pressed steel retainer (size-dependent) |
| Sealing | Open (unshielded) — See variant options |
| Lubrication | See variant options |
| Radial Clearance | CN (Normal) — See variant options |
| Dimensional Standard | ISO 15 / ABEC equivalent |
| Operating Temperature | Typically −20°C to +120°C (−4°F to +248°F) |
| Weight | See variant options |
| Quantity per Order | 1 piece (default); multi-pack options available via QTY selector |
Match the three key dimensions of your existing bearing: bore diameter (d), outer diameter (D), and width (B). These are stamped on the bearing shield or listed in your equipment's service manual. Select the corresponding 6300-series number from the variant dropdown — each option shows all three dimensions in millimeters.
The 6300 series is designed primarily for radial loads. It also accommodates moderate bidirectional axial (thrust) loads — typically up to 30–50% of the dynamic radial load rating depending on the size. For predominantly axial applications, an angular contact or thrust bearing would be more appropriate.
Standard 6300-series bearings are made from carbon chromium steel and are not inherently corrosion-resistant. For wet or chemically exposed environments, consider applying a compatible grease with corrosion inhibitors, or contact us to confirm availability of stainless steel variants for your size.
These bearings are direct replacements for any OEM or aftermarket 6300-series deep groove ball bearing. Common equipment includes single-phase and three-phase electric motors, centrifugal water pumps, gearbox shafts, agricultural machinery spindles, skateboard and inline skate wheels (6300/6301), and light-duty conveyor rollers. Always verify bore, OD, and width match before installation.
Proper installation requires pressing force applied evenly to the bearing ring that is being fitted (inner ring when pressing onto a shaft, outer ring when pressing into a housing). A bearing press or a correctly sized driver sleeve is strongly recommended. Never strike the bearing directly with a hammer, as this can damage the raceways and balls.
Open bearings have no covers and must be externally lubricated — suitable for clean, controlled environments. ZZ (metal-shielded) bearings reduce contamination ingress and retain grease better. 2RS (rubber-sealed) bearings offer the best protection against dust and moisture and come pre-greased for maintenance-free operation. Check the variant options or contact us to confirm the sealing type available for your chosen size.
Yes — the default QTY option is 1 piece, so you can order exactly the quantity you need. If you require multiple bearings for a rebuild or stocking purposes, select the appropriate quantity from the QTY selector before adding to cart.
