Engineers and buyers often turn to the 6802 bearing for high-speed, compact applications. The 6802 deep-groove ball bearing measures 15 mm (inner diameter) by 24 mm (outer diameter) by 5 mm (width), making it ideal for tight spaces such as bicycle hubs, e-bike motors, and precision machinery. In this comprehensive guide, we explain 6802 specifications, sizing, sealing options, material choices (ceramic vs. chrome steel), typical applications, and series sizes. Throughout, we highlight BYWB’s offerings – for example, the BYWB 6802-2RS sealed bearing – and show why BYWB is a trusted source when you need to buy 6802 bearing online.
6802 Bearing Specification
The 6802 bearing is a single-row radial deep-groove ball bearing built to standard ISO metric sizes. Its key specifications include:
Dimensions: 15 mm bore (inner diameter) × 24 mm outer diameter × 5 mm width. This ultra-thin profile makes it compact and lightweight.
Material: Standard bearings are made from chrome steel (bearing steel, often GCr15/SAE 52100) for high hardness and durability. BYWB also offers stainless-steel (440C) 6802 bearings for corrosion resistance, and hybrid ceramic versions (steel race with Si₃N₄ ceramic balls) for ultra-low friction.
Load Ratings: Typical dynamic (Cr) load capacity is around 2.0–2.6 kN and static (C0r) around 1.2–1.3 kN. For example, one common data set lists a dynamic rating of ~2.08 kN and static ~1.25 kN. (Variations exist by manufacturer and precision class.)
Speed Rating: As a small bearing, the 6802 can spin very fast. Open or lightly sealed 6802 bearings can reach 25,000–30,000 RPM with proper lubrication, while fully sealed 2RS versions typically run at 18,000–25,000 RPM.
Tolerance and Precision: BYWB 6802 bearings are made to tight tolerances (often ISO P0 standard, comparable to ABEC-3, with options for higher precision like ABEC-5 or ABEC-7). High-grade versions may use P5/P6 tolerance classes for reduced noise and vibration.
Cage: The 6802 uses a light cage (usually stamped steel or polyamide) to guide the balls. Chrome-steel bearings often have a metal cage, while some hybrid bearings use a ceramic-fiber cage.
Contact Angle: These are deep-groove bearings with a nominal contact angle of 0°. They handle radial loads and some axial loads in both directions.
Clearance: Standard internal clearance is C0 (normal), but C3 clearance (extra clearance) is common in bicycle hub applications to allow for thermal expansion and preventing pre-load under high speeds. BYWB offers both C0 and C3 versions.
Together, these specs make the 6802 bearing a versatile, high-speed bearing. BYWB’s 6802 bearings are manufactured to meet ISO standards, and the chrome steel variants use premium GCr15 alloy. Whether ABEC-grade precision or high-temperature stability is needed, BYWB has options to match the spec. The table below summarizes key 6802 bearing specs:
| Parameter | Specification |
| Bearing Type | Deep Groove Ball Bearing |
| Model Number | 6802 / 6802ZZ / 6802-2RS |
| Brand | BYWB |
| Inner Diameter (d) | 15 mm |
| Outer Diameter (D) | 24 mm |
| Width (B) | 5 mm |
| Precision Class | ABEC-3, ABEC-5, ABEC-7 (optional) |
| Sealing Type | Open / ZZ (Metal Shield) / 2RS (Rubber Seal) |
| Material (Rings & Balls) | Chrome Steel (GCr15) / Stainless Steel / Hybrid Ceramic |
| Cage Material | Steel / Nylon / Brass (optional) |
| Dynamic Load Rating (Cr) | 1.55 kN |
| Static Load Rating (Cor) | 0.66 kN |
| Limiting Speed (Grease) | 38,000 rpm |
| Limiting Speed (Oil) | 45,000 rpm |
| Weight | Approx. 0.006 kg |
| Operating Temperature | -20°C to +120°C |
| Noise Level | Z1 / Z2 / Z3 (optional) |
| Lubrication | High-speed grease (customized for bicycle or electric motor use) |
| Applications | Bicycles, electric motors, RC models, medical devices, precision instruments |
BYWB’s 6802-2RS model, for example, is a fully sealed chrome-steel bearing that ships pre-lubricated and ready for use. It meets or exceeds industry standards for quality and performance, giving engineers confidence in demanding applications.
What Size Is a 6802 Bearing?
The 6802 bearing is a 15×24×5 mm bearing. In bearing code terms, “6802” breaks down as follows: the “68” indicates the series (a light series of thin bearings) and “02” indicates the bore code, corresponding to 15 mm. Its exact dimensions are:
Bore (ID): 15 mm
Outer Diameter (OD): 24 mm
Width (thickness): 5 mm
This ultra-thin width means the 6802 is only 5 mm thick, which is unusually slim. That profile is why the 6802 is often called a thin series or micro bearing. Despite its size, the 24 mm outside diameter gives enough surface area to support radial loads.
The 15 mm internal diameter is a standard size for many bicycle parts and small motors. For example, many road bike hub bearings and motor shafts are designed around a 15 mm arbor. The 5 mm thickness allows two bearings to fit side-by-side in a narrow hub shell, saving space and weight. In practice, 6802 bearings are often used in lightweight bicycle hubs (especially road bikes) and slim e-bike motors where every gram counts.
Because the 6802 is so compact, it keeps rotating mass low while still providing the capacity to handle wheel loads or motor thrust. For bicycle and e-bike designers, the 6802’s 15x24x5 size is a sweet spot: slim enough for compact assemblies, yet large enough to maintain strength. When engineers or cyclists search for “6802 bearing for bicycles” or “6802 bearing dimensions,” they’ll find that this size is perfect for high-speed wheels, pedals, and motor shafts.
In short, 15×24×5 mm is the standard and relevant size of the 6802. Its “rule of thumb” is: the small ID fits common shafts, the 24 mm OD gives a strong housing fit, and the 5 mm width is ideal for tight spaces. This size has been standardized, so replacement bearings from BYWB or other brands will fit exactly when labeled 6802.
6802 Bearing Sealing Solution
Bearings can come open or with seals/shields. The 6802 can be supplied in three common configurations:
6802 Open (no seal): The bearing is exposed with balls visible. Pros: Lowest friction, highest speed capability, easy greasing. Cons: No protection from dust or moisture; requires regular lubrication maintenance. Open 6802 bearings are often used in very clean, high-speed applications or in controlled environments.
6802ZZ (double metal shield): Metal shields on both sides (non-contact or lightly contact metal shields). These metal ZZ shields block moderate dust and debris and keep grease inside. Pros: Low friction (shields cause minimal drag), pre-lubricated, fairly durable, and cheaper than rubber seals. Cons: Not fully dust/water-tight (small gaps remain), still not maintenance-free. Good for most bicycle motors and electric motors in clean conditions.
6802-2RS (double rubber seal): Rubber seals on both sides that contact the inner ring. Pros: Best protection against dust, water, and dirt; grease-filled for life (no re-greasing needed); very low maintenance. Cons: Slightly higher friction and lower max speed compared to ZZ (because rubber contacts) and heavier cost. The sealed design increases drag by a small amount, but in bicycle applications this is often a worthwhile trade-off for longevity and reliability.
Each option has its place. For example, many cyclists prefer sealed (2RS) bearings for wheel hubs because they prevent road grit from entering and hold grease for years. BYWB’s 6802-2RS sealed bearing is especially popular: it comes pre-lubricated and can be installed with no further maintenance for thousands of kilometers. On the other hand, open 6802 bearings (BYWB 6802 or 6802-Open) are useful in high-speed racing wheels or electric motors where maximum RPM is needed and routine maintenance is acceptable.
A quick comparison:
Open 6802: Best when absolute speed and minimal friction are needed. Requires external grease. Ideal for lab conditions, some motor/generator shafts, or where bearings are frequently serviced.
6802ZZ Shielded : Good middle ground. Moderate speed capability (often rated ~25k RPM) and lightweight protection. Common in electric motors (like small BLDC motors) and moderately dirty environments. Many engineers specify 6802-ZZ as a standard item when some protection is needed without cost of rubber seals.
6802-2RS Sealed: Highest protection against contaminants. Typically rated ~18–25k RPM. Excellent for bicycles, e-bikes, scooters, and any outdoor gear. BYWB’s 6802-2RS is pre-greased with quality lubricant, which simplifies installation (“fit and forget” for general use).
- In BYWB’s product catalog, you’ll see “6802-2RS” (sealed), “6802-ZZ” (shielded), and “6802” (open) options. For example, the BYWB 6802-2RS bearing has a high-quality rubber seal on each side and a stable limiting speed of about 28,000 RPM. The BYWB 6802-ZZ version uses metal shields for moderate protection. Engineers should choose based on environment: if the bearing will see water or dirt (like a mountain bike or scooter), go 2RS. If it’s inside a dry motor, a ZZ or even open bearing may suffice.
How to Choose Your 6802 Ceramic Bearing or Chrome Steel Bearing in Your Bicycle
When it comes to bicycle applications, one of the key decisions is material: chrome steel vs. hybrid ceramic. Both have pros and cons:
Chrome Steel (Bearing Steel): The standard material (SAE 52100/GCr15). Chrome steel bearings are tough, handle shock well, and cost less. They are highly durable under heavy loads, and the material is proven across industries. For most bikes (commuter, mountain, even many road bikes), a high-quality chrome steel 6802 (especially in 2RS sealed form) offers a good balance of performance and value. The downside is a bit more friction and weight compared to ceramic. Chrome steel can also corrode if not properly sealed or if exposed to water; however, a sealed (2RS) design mitigates that.
Stainless Steel (440C): A variation of chrome steel with added corrosion resistance. BYWB’s SS6802 bearings use 440C stainless rings and balls. They cost slightly more than regular steel but last longer in wet conditions (touring, beach cruising, e-bikes in rain). Performance is similar to regular steel, though some precision limits apply.
Hybrid Ceramic: Typically silicon nitride (Si₃N₄) balls with steel rings. These bearings run with lower friction and can sustain higher speeds and last longer if properly installed. Advantages:
Lower Friction: The ceramic balls are very smooth and hard. This means the bearings spin more freely (common claims of 10–30% lower friction). For a cyclist, that translates to slightly easier pedaling or higher efficiency at high RPMs.
Weight: Ceramic balls are lighter than steel balls, making the entire bearing a few grams lighter (important in performance bikes).
Corrosion Resistance: Silicon nitride does not rust. Combined with seals, ceramic bearings resist moisture better.
Longevity: If installed correctly (no misalignment or overloading), ceramic bearings can outlast steel bearings, as they don’t deform easily.
However, ceramics are expensive (often 2–3× the price of steel) and can be brittle under extreme shock (not a big issue in controlled conditions, but possible if a wheel hit is very hard). They also require careful handling and precise bearing seats – if misinstalled or used with dirt ingress, they can fail.
For bicycles, the choice often comes down to budget and performance needs:
Recreational/Utility Bikes: Go with sealed steel 6802 (BYWB 6802-2RS Chrome). Affordable and reliable. E.g., city commuting hub bearings usually just need steel 2RS for rust protection.
High-End Road Bikes: Enthusiasts may opt for hybrid ceramic 6802 bearings (BYWB’s hybrid line). The weight savings and smoother roll can eke out marginal gains. These bikes often have perfectly sealed bearing cartridges, so the better lifespan of ceramics can shine.
MTB and Off-Road: Often use stainless or sealed steel. The focus is durability. If the bike sees mud and water, stainless (440C) 6802-2RS is a great choice.
E-bikes and Motorcyclized Bikes: Torque and weight matter. Many e-bikes use steel 6802-2RS for durability and cost-effectiveness. Some premium e-bike makers or performance riders may choose ceramics for reduced heat and friction in the motor bearings.
Cost Consideration: A standard steel 6802-2RS bearing might cost just a few dollars in bulk, whereas a ceramic 6802 can be over $10–$20 each. For a wheel set (2 bearings per hub), that difference adds up. Buyers on a budget or shops ordering wholesale often stick to steel.
In summary, both materials have their place. BYWB caters to all: from economical chrome-steel 6802-2RS bearings to high-spec hybrid ceramic 6802-2RS (and even full-ceramic ceramic-ceramic if needed for specialty applications). The guiding factors are price vs. performance. If you want “6802 bearings for bicycles” that last long with minimal drag, ceramic is an option. If you want a solid, cost-effective bearing for general use, stick to the tried-and-true chrome steel. Stainless variants (BYWB SS6802) are in between – more costly than regular steel, but a huge benefit in wet/rusty environments.
Here’s a quick comparison:
Steel 6802 (Chrome Steel):
Pros: Durable, inexpensive, readily available (2RS, ZZ, open). Tolerant of shock.
Cons: Slightly higher friction, heavier, can rust if seals fail.
When to use: Everyday bike wheels, entry/mid-level builds, electric scooters.
Stainless 6802:
Pros: All the durability of steel, plus rust resistance. Good for wet/harsh use.
Cons: A bit higher cost, marginally lower load capacity than chrome steel (440C vs GCr15).
When to use: Touring bikes, beach towns, or any application exposed to moisture.
Hybrid Ceramic 6802 (Si₃N₄ balls, steel rings):
Pros: Lowest rolling resistance, high speed, long life (if kept clean), corrosion-free.
Cons: Expensive, requires care, not much better under high loads (balls harder but rings still steel).
When to use: High-end road or e-bikes where every watt and gram counts, racing wheelsets, precision gimbal motors on drones.
BYWB makes it easy to choose your 6802: their online catalog clearly lists each variant. When designing or upgrading your bicycle, check BYWB’s site or contact their engineers to compare “6802 ceramic bearing” vs. “6802 chrome steel bearing” side by side. Remember also to consider where the bearing will live: sometimes an extra rubber seal (2RS) or stainless steel is a more important factor than the ball material.
What Is a 6802 Bearing Used For?
The compact yet robust 6802 bearing finds homes in many applications:
Bicycles and E-Bikes: A very common use. 6802 bearings are often used in lightweight bicycle hubs (especially road bikes and some rear hubs). They fit neatly in narrow hub shells, pedals, freehub bodies, and bottom brackets (though BBs often use slightly wider bearings). In e-bikes, 6802s appear in hub motors, where their small size and high-speed capability help the motor spin efficiently. They can also be found in e-bike throttle pedals, motor controllers, and other moving parts. Search terms like “6802 bearing for bicycles” or “bicycle hub 6802 bearing” return many bike-specific parts, showing the popularity.
Small Electric Motors and Generators: Deep groove bearings like 6802 are standard in motors that run at high RPM but carry moderate loads. This includes brushless DC motors in drones, robotics, fans, and office equipment. The small 6802 allows motors to be compact and light. The metal shields (ZZ) or seals (2RS) protect internal components from dust. BYWB markets 6802 bearings explicitly for electric motor use, citing their high precision and balance.
Automation and Robotics: Precision machinery – CNC machines, robots, actuators – often use miniature bearings for encoders, small gearboxes, or precision slides. The 6802’s precision grades (some are offered in P5 tolerance) make it suitable for slow, smooth movements as well as fast spindles. Industrial 6802 bearings may have different lubrication (grease/oil) than bicycle ones but are dimensionally identical.
Scooters and Power Tools: Many modern scooters (electric kick scooters) use 6802 bearings in wheel hubs and motor shafts for smooth rotation. Power tools like drills and saws might use similar-sized bearings (though tools often use heavier 6200 series). The 6802 can appear in lightweight drills or as support bearings in gearboxes.
Consumer Electronics: Because of its size, 6802 can be found in high-end CPUs or GPU fans, 3D printer motors, gimbals (camera stabilization equipment), even optical drives in older computers. In all these cases, a balance of speed and precision is needed in a small package.
Medical and Laboratory Equipment: Devices like centrifuges or small pumps sometimes use 6802 bearings (open or shielded) because they need high speed with minimal friction.
Hobbyist and Sport Applications: For example, some skateboard or rollerblade bearings use the 6000 series (like 608), but 6802 can be found in inline skating frames or certain hobby electric vehicles.
Automation and Conveyors: In some small conveyor rollers or guides, 6802s serve as idler rollers, especially when a very narrow profile is needed.
Overall, the 6802 is a workhorse in any application that requires a precise, high-speed, low-profile bearing. BYWB emphasizes its use in bicycles (road/hub motors) and motors, but the list is long. If a design calls for a 15×24×5 bearing, it’s almost certainly a “6802” or an exact equivalent, and BYWB can supply the exact seal and material combination needed. Customers often come to BYWB searching “6802-2RS bicycle bearing” or “buy 6802 bearing online for motor”, knowing the code they need.
6800 Bearing Series Size Chart
The 6802 is part of the 6800 bearing series, which covers a range of thin bearings with similar design and varying sizes. Below is the size chart for the 6800 series (6800 through 6812), showing inner diameter (bore), outer diameter, and width:
| Bearing Code | Bore (mm) | Outer Dia. (mm) | Width (mm) |
| 6800 | 10 | 19 | 5 |
| 6801 | 12 | 21 | 5 |
| 6802 | 15 | 24 | 5 |
| 6803 | 17 | 26 | 5 |
| 6804 | 20 | 32 | 7 |
| 6805 | 25 | 37 | 7 |
| 6806 | 30 | 42 | 7 |
| 6807 | 35 | 47 | 7 |
| 6808 | 40 | 52 | 7 |
| 6809 | 45 | 58 | 7 |
| 6810 | 50 | 65 | 7 |
| 6811 | 55 | 72 | 9 |
| 6812 | 60 | 78 | 10 |
As the table shows, the 6800 series ranges from a 10×19×5 mm bearing (6800) up to a 60×78×10 mm bearing (6812). The bore size increases, and at certain points the width steps up from 5 mm to 7 mm and then 9–10 mm for the largest. All bearings in this series share the same basic geometry (deep groove ball design) and can also be specified with open, shielded (ZZ), or sealed (2RS) seals. For instance, BYWB’s catalog includes 6800-2RS, 6801-ZZ, 6803-2RS, etc.
This chart helps engineers pick the right sized bearing if, for example, a 6802 is too small or large for a new application. It’s also useful for understanding how the 68 series naming correlates to dimensions.
Conclusion
The 6802 bearing stands out as a high-speed, compact solution for bicycle hubs, e-bikes, small motors, and precision equipment. With its 15×24×5 mm size, it fits snugly in lightweight wheel hubs and motor shafts. Key specs include a dynamic load rating around 2.0–2.6 kN and static around 1.2 kN. 6802 bearings can be ordered in open, ZZ (shielded), or 2RS (sealed) varieties – engineers should choose based on environment. For example, the BYWB 6802-2RS is a sealed chrome steel bearing that is pre-lubricated and ready for harsh conditions, while the BYWB 6802-ZZ shielded bearing offers moderate protection for cleaner applications.
Material choice is also vital. BYWB offers 6802 bearings in chrome steel for cost-effective durability, stainless steel for extra corrosion resistance, and hybrid ceramic for the ultimate in low friction and high speed. Cyclists looking for “6802 bearing for bicycles” will find these options useful: sealed steel bearings give long life in a wide range of riding conditions, while ceramic bearings give a competitive edge for performance bikes, albeit at higher cost.
In practical use, 6802 bearings are found in road bike hubs, e-bike motors, skate gear, small generators, and robotics. They provide a balance of speed capability and load support in a package only 5 mm thick. The 6800 series chart above helps compare adjacent sizes (6800, 6801, 6802, etc.) if an exact fit is needed for a custom design.
For engineers and buyers needing these bearings, BYWB is a one-stop supplier. BYWB’s catalog lists every 6802 variant, including BYWB 6802-2RS, BYWB 6802-ZZ, and more. You can buy 6802 bearings online directly from BYWB’s website, which offers competitive pricing on bulk orders as well as OEM services. BYWB’s quality assurance and wide range mean you can trust the bearing in your application – whether it’s an everyday commuter bicycle or a sophisticated automation device.
In summary, understanding the 6802 bearing’s specs, sizes, seals, and materials will help you select the best bearing for your project. BYWB’s offerings cover all needs: from economy steel 6802-2RS bearings for standard bicycles to high-precision ceramic bearings for performance e-bikes. Check BYWB’s product range to find the exact 6802 bearing that matches your design – safe in the knowledge that you’re getting a high-quality part suitable for your application.
