Deep Groove Ball Bearings
Overview
Deep groove ball bearings are the most widely used type of rolling-element bearing, designed to support radial loads and moderate axial loads in both directions. Their simple, low-friction design makes them suitable for everything from small household appliances to industrial electric motors and pumps.
We stock deep groove ball bearings in single-row and double-row configurations, in bore sizes from a few millimeters to over 200mm, with open, rubber-sealed (2RS), and metal-shielded (ZZ) variants available across multiple precision grades.
Key Features & Design Benefits:
- Combined load capacity — handles radial loads and light-to-moderate axial loads in both directions, reducing the need for separate thrust bearings
- Low friction, high-speed capable — suitable for speeds up to tens of thousands of RPM depending on size and lubrication
- Quiet, smooth operation — precision-ground raceways minimize vibration and noise
- Maintenance-free options — sealed (2RS) variants come pre-greased and protected from contamination
- Wide compatibility — ISO-standard dimensions are interchangeable across major brands (SKF, NSK, FAG, NTN, KOYO)
Products
Interchangeable With : SKF、NSK
-
The 6201 ZZ bearing is a single-row deep groove ball bearing with steel shields on both sides, featuring a 12...
-
This product has been consolidated. View the current 6201 ZZ Bearing listing.
-
The 6202ZZ bearing is a high-quality single-row deep groove ball bearing with metal shields on both sides, featuring a 15mm...
-
Product reorganized. Browse our Deep Groove Ball Bearings category for current listings.
Types & Variants We Offer
| Variant | Description | Best For |
|---|---|---|
| Single Row (6000, 6200, 6300, 6400 series) |
One row of balls; most common configuration | General-purpose use, motors, pumps |
| Double Row | Two rows of balls for higher radial load capacity | Heavier loads in compact spaces |
| Open | No seal or shield | Applications with external lubrication systems |
| 2RS / RS | Rubber seals on both sides | Dirty, dusty, or wet environments; maintenance-free |
| ZZ / Z | Metal shields on both sides / one side | Moderate protection, higher speed than 2RS |
| 2RZ | Low-friction rubber seal, non-contact | High-speed applications needing some sealing |
- Precision grades: ABEC-1 (standard), ABEC-3, ABEC-5, ABEC-7 / ISO P0, P6, P5, P4 — higher grades mean tighter tolerances, lower runout, and quieter operation, used in precision motors and spindles.
- Material options: Chrome steel (GCr15) for standard use, stainless steel (440C) for corrosion resistance, hybrid ceramic (ceramic balls + steel rings) for high speed and reduced weight.
Common Bore Size Ranges
| Series | Bore Range | Typical Use |
|---|---|---|
| 600 / 608 series (miniature) | 3–10 mm | Small motors, fans, RC hobby equipment |
| 6000 series | 10–40 mm | Electric motors, pumps, general machinery |
| 6200 series | 10–60 mm | Slightly heavier-duty than 6000 series |
| 6300 series | 10–110 mm | Heavier radial loads, gearboxes |
| 6400 series | 17–110 mm | Heavy-duty industrial equipment |
Full dimension tables (bore × OD × width, dynamic/static load ratings, speed ratings) are available on each individual product page.
Applications & Industries
- Electric motors — NEMA-frame motors, fan motors, pump motors
- Centrifugal pumps and compressors
- Industrial conveyor systems
- Automotive components — wheel hubs, alternators, transmissions
- Agricultural machinery — fans, gearboxes, rotary equipment
- HVAC and blower assemblies
- Household appliances — washing machines, vacuum cleaners, power tools
FAQs
How to Choose the Right Deep Groove Ball Bearing
- Load — check dynamic (C) and static (C0) load ratings against your application’s radial and axial demands
- Speed — match the bearing’s speed rating to your shaft RPM; sealed variants run slightly slower than open ones
- Environment — choose 2RS for dirty/wet conditions, ZZ for moderate protection, Open if you supply your own lubrication system
- Precision — higher ABEC/P-grades for low-noise or high-precision equipment (spindles, precision motors)
- Temperature & corrosion — stainless steel or specialty lubricants for high-temperature or corrosive environments
What do 2RS, ZZ, and "Open" mean on a bearing?
These describe the seal/shield type. 2RS means rubber seals on both sides (fully sealed, pre-greased, maintenance-free). ZZ means metal shields on both sides (some protection, allows slightly higher speeds than 2RS). Open means no seal or shield, used when external lubrication is supplied.
Cross-Reference & Brand Compatibility
Deep groove ball bearings follow ISO standard dimensions, so part numbers are interchangeable across major manufacturers. For example, a 6205-2RS from any of the following brands shares the same 25×52×15mm envelope:
Compatible with: SKF 6205-2RS, NSK 6205-2RS, FAG 6205-2RSR, NTN 6205LLU, KOYO 6205-2RS
How do I find the correct bearing size for my shaft?
Measure your shaft diameter (this is the bore, “d”) and check the housing bore (outer diameter, “D”), then match against the dimension table on each product page. The part number’s first two digits typically indicate the bore size series — see individual product pages for exact conversion.
contact us
Need Help Selecting the Right Bearing?
Our engineering team can help you choose the most suitable Bearing based on your application requirements, operating conditions, and performance targets.
- ✓ Fast Quotation
- ✓ Technical Support
- ✓ Global Shipping
Let’s click here to send your inquiry now!