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Finding a reliable ID 10mm deep groove ball bearing that fits precisely and holds up under continuous load is a challenge for makers, repair technicians, and mechanical engineers alike. Whether you are rebuilding a motor, replacing a worn spindle bearing, or sourcing components for a custom machine build, dimensional accuracy and consistent sealing are non-negotiable. These GCR15 steel deep groove ball bearings are engineered for exactly those demands.
Each bearing features a 10mm inner diameter (ID) bore and is available across multiple series — 6700, 6800, 6900, 6000, 6200, and 6300 — with outer diameters ranging from 15mm to 35mm (approximately 0.59" to 1.38") and widths from 4mm to 11mm (approximately 0.16" to 0.43"). Sealing options include rubber double-sealed (2RS) and metal-shielded (ZZ) variants. The raceway and balls are manufactured from GCR15 bearing steel (equivalent to AISI 52100 / SUJ2), hardened and ground for dimensional consistency.
These ID 10mm ball bearings are well suited for small electric motor shaft support, RC vehicle wheel hubs and drivetrain assemblies, 3D printer axis carriages and extruder idlers, skateboard and inline skate wheel replacements, and light industrial conveyor or pulley systems where a compact, sealed rolling element bearing is required.
| Inner Diameter (ID / Bore) | 10 mm (0.394") |
|---|---|
| Outer Diameter (OD) | See variant options (15 mm – 35 mm depending on series) |
| Width (B) | See variant options (4 mm – 11 mm depending on series) |
| Available Series | 6700, 6800, 6900, 6000, 6200, 6300 |
| Sealing Type | 2RS (rubber double-sealed) or ZZ (metal-shielded) — see variant options |
| Bearing Material | GCR15 chromium bearing steel (AISI 52100 / SUJ2 equivalent) |
| Cage Material | See variant options (typically steel or nylon) |
| Lubrication | Factory pre-greased |
| Operating Temperature | Typically −20°C to +120°C (2RS); up to +150°C (ZZ) |
| Dimensional Standard | ISO 15 / JIS B 1521 |
| Pack Quantity | 1 pcs / 4 pcs / 10 pcs / 20 pcs — see variant options |
| Product Type | Deep Groove Ball Bearing |
Choose 2RS (rubber double-sealed) when your application involves dust, light moisture, or debris — the rubber lip seals actively retain grease and exclude contaminants. Choose ZZ (metal-shielded) when operating at higher speeds in a cleaner environment; the metal shields generate less friction and allow slightly higher RPM, but do not seal as tightly as rubber lips.
All series share the 10mm bore. The series number determines the outer diameter and width: 6700 (OD 15mm, W 4mm) is the most compact; 6800 (OD 19mm, W 5mm) and 6900 (OD 22mm, W 6mm) are common in light-duty motors and RC applications; 6000 (OD 26mm, W 8mm) and 6200 (OD 30mm, W 9mm) suit general machinery; 6300 (OD 35mm, W 11mm) handles heavier radial loads. Match the series to your housing bore and shaft shoulder dimensions.
GCR15 steel deep groove ball bearings in the 6×00 series with a 10mm bore typically carry dynamic radial load ratings (C) in the range of 1.0 kN to 5.5 kN and static load ratings (C₀) of 0.5 kN to 3.0 kN, depending on series. Larger series (6300) carry higher loads than smaller series (6700). Contact us to confirm rated load values for your specific series if required for engineering calculations.
GCR15 bearing steel is not inherently stainless. The 2RS rubber seals provide good grease retention and moderate moisture exclusion for incidental splash or humidity. For applications with continuous water exposure, salt spray, or aggressive chemicals, consider stainless steel bearings (e.g., AISI 440C). These bearings are suitable for dry to lightly humid indoor environments.
Yes. These bearings are manufactured to ISO 15 / JIS B 1521 standard metric dimensions. A bearing marked 6800-2RS, for example, will have the same 10×19×5mm dimensions as any other ISO-compliant 6800-2RS bearing, making it a dimensional drop-in replacement for SKF, NSK, FAG, NTN, and other brands of the same designation.
Yes. The 6700ZZ (10×15×4mm) and 6800-2RS (10×19×5mm) are particularly popular for 3D printer axis idlers, extruder assemblies, and RC car wheel hubs. The compact dimensions and standard bore fit most off-the-shelf shafts and printed or machined housings designed for these series. Verify the OD and width against your specific printer or vehicle model's bearing seat before ordering.
Order 1 pcs for a single repair or test fit. Choose 4 pcs for a full set (e.g., four wheels on an RC car or both ends of two shafts). Select 10 pcs for a maintenance stock or small production run. The 20 pcs pack offers the best per-unit value for ongoing production or workshop inventory. All packs ship as the same bearing model — only quantity differs.
