Deep Groove Ball Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Deep Groove Ball Bearing
NACHI 6304 Deep Groove Ball Bearing for Bicycle Parts
Keep your bicycle running smoothly mile after mile with the reliable NACHI 6304 Bearing, designed to reduce friction and enhance performance in critical bike components. This deep groove ball bearing delivers consistent, long-lasting operation whether you’re commuting or hitting the trails, ensuring minimal maintenance and maximum ride enjoyment.
- Precision-engineered with bearing steel construction and available seals (Zz, 2RS, Open) to suit different riding conditions
- Optimized 20*52*15 mm specification ensures perfect fit for standard bicycle parts, eliminating compatibility guesswork
- Grease or oil lubrication options let you customize maintenance to your riding style, keeping things rolling smoothly season after season
7
Day Prototype
vs. 8-12 wks standard
50+
Countries Served
Global logistics network
12h
Quote Response
Expert engineers on call
Typical Applications
Wind Power
Mining
Steel & Metallurgy
Automotive / EV
Rail Transit
Precision Machinery
Genuine SKF Bearings
NDA Protected
Free Sample for Orders > $50K
Global Shipping
Product Details
Produktspezifikationen
| 6304 |
| 20*52*15 mm |
| NACHI |
Anwendungseignung
| Bicycle Parts | Wheel hubs, bottom brackets, headset assemblies |
Need a Reliable 6304 Deep Groove Ball Bearing for Bicycle Parts? Here’s What Matters
Finding the right bearing for bicycle components can be tricky—whether you’re replacing a worn hub bearing or sourcing for production, mismatched dimensions or poor quality often lead to premature failure. Many cyclists and manufacturers struggle with bearings that lack consistent precision, causing wheel wobble or frequent maintenance. With so many brands and variants on the market, getting the exact specifications you need without delays is another common headache.
Built for Consistent Performance in Bicycle Applications
This NACHI 6304 deep groove ball bearing addresses these challenges with engineering tailored for bicycle parts. As a full-range bearing supplier, we cover both international brands like NACHI and domestic options, ensuring you get the right product without switching suppliers. The 20x52x15 mm dimensions fit standard bicycle wheel hubs and bottom brackets, while ISO 9001-certified production processes guarantee reliability. With现货库存 (ready stock) available, you can avoid long lead times that disrupt your projects or repairs.
Wo dieses Lager am besten funktioniert
Designed as a radial bearing with a 0° contact angle, this 6304 model excels in applications with primarily radial loads—ideal for bicycle wheels where the bearing supports the weight of the rider and bike while maintaining smooth rotation. Its single-row design balances durability and weight, a critical factor for bicycle performance. Whether used in road bikes, mountain bikes, or commuter cycles, the bearing handles the repetitive stresses of pedaling and terrain changes without compromising on smoothness. Entscheidende technische Details
The bearing steel construction ensures high surface hardness and wear resistance, extending service life even under heavy use. Precision ratings from P0 to P4 allow customization based on application needs—P0 for general use and higher grades like P5 or P4 for high-performance bicycles requiring tighter tolerances. Sealing options (Zz, 2RS, Open) provide flexibility: Zz shields offer basic protection against dust, while 2RS rubber seals keep lubricant in and moisture out, reducing maintenance needs. Vibration classes Z1V1 to Z3V3 further ensure quiet operation, a key consideration for rider comfort. Warum die Lagerauswahl die Gesamtkosten beeinflusst
Choosing the right 6304 bearing goes beyond upfront cost. A low-quality bearing may fail early, leading to costly downtime for repairs or replacements. This NACHI bearing’s robust design minimizes the risk of premature wear, reducing long-term maintenance expenses. By adhering to international dimensional standards, it ensures easy interchangeability, so you won’t face compatibility issues when replacing parts. Proper lubrication (grease or oil) and precision manufacturing also contribute to longer service intervals, lowering the total cost of ownership over time. Qualität, auf die Sie sich verlassen können
Our commitment to quality starts with ISO 9001-certified production and检验流程 (inspection processes). Raw materials undergo strict testing, and finished bearings are checked for dimensions, hardness, and surface treatment to meet industry standards. We provide a质保期 (warranty period) covering manufacturing defects, ensuring you receive a reliable product. With access to a wide range of brands and models, we can source bearings according to your exact specifications, whether you need NACHI or another trusted brand. Our现货库存 (ready stock) ensures quick发货 (delivery), so you can keep your operations or repairs on schedule. Sofort verfügbarer Bestand für den sofortigen Versand
Whether you’re sourcing NACHI 6304 bearings for bicycle manufacturing or need a replacement part, we’re here to help. Provide your required quantity, seal type, precision class, and destination, and we’ll send you a competitive quote with lead time. With our extensive inventory and brand coverage, we can fulfill your order quickly and accurately—no need to manage multiple suppliers. Häufig gestellte Fragen F: Liefern Sie auch Lager von anderen Marken außer ?
A: Yes, we offer a full range of international brands including SKF, NSK, NTN, Koyo, IKO, FAG, Timken, and domestic优质品牌 (high-quality domestic brands). We can source bearings according to your specified brand and model. Q: How can I confirm if this 6304 bearing fits my bicycle part? A: Provide the dimensions (bore diameter, outer diameter, width) or the specific bicycle component (e.g., wheel hub, bottom bracket), and our technical team will verify compatibility with the 20x52x15 mm规格 (specifications). F: Wie lautet Ihre Garantiepolitik für dieses Lager? A: We provide a质保期 (warranty period) against manufacturing defects.具体条款 (Specific terms) are outlined in the sales contract, and defective products can be replaced or refunded within the warranty period. F: Was ist die Mindestbestellmenge für dieses Lager?
A: We support low minimum order quantities, making it suitable for small-scale repairs or trial orders. Contact us for details based on your specific needs. F: Wie lange dauert der Versand und welche Methoden sind verfügbar?
A: For现货 (in-stock) items, we ship within 1-3 business days. Shipping methods include express (3-5 days), air freight (5-7 days), or sea freight (20-30 days), depending on your location and urgency. F: Bieten Sie OEM- oder ODM-Dienstleistungen für Lager an?
A: Yes, we support OEM and ODM定制 (customization) according to your drawings, specifications, or branding requirements. Contact us with your details for a tailored solution. Ready to order or need a quote? Our engineers will respond within 12 hours with a tailored solution.
Packaging & Shipping
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Product Summary
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General Specifications
| Bearing Type | Deep Groove Ball Bearing |
| Brand | SKF |
| Quality Standard | ISO 9001 / TS 16949 |
| Precision Grade | P0 / P5 / P6 (custom) |
| Material | Chrome Steel / Stainless |
| Cage Material | Steel / Brass / Polyamide |
| Lubrication | Grease / Oil (specify) |
| Operating Temp. | -40°C to +200°C |
| Min. Order Qty | 1 pc (samples available) |
| Prototype Lead Time | 7 Working Days |
Performance Parameters
| Load Capacity | Contact for C0/Cr values |
| Speed Rating | Contact for ndm limit |
| Vibration Level | Z1 / Z2 / Z3 (custom) |
| Noise Level | V1 / V2 / V3 (custom) |
| Fatigue Life | L10h per ISO 281 |
| Sealing Options | Open / Z / 2Z / RS / 2RS |
Custom Specifications Available
Our engineering team can modify bearing dimensions, materials, seals, and clearances to meet your specific operating requirements. Submit your drawing or spec sheet for a tailored proposal.
Wind Power
Main shaft bearings, gearbox bearings, and generator bearings for onshore and offshore wind turbines.
Mining & Quarrying
Heavy-duty bearings for crushers, conveyors, and rotary equipment in extreme dust and shock-load environments.
Steel & Metallurgy
High-temperature bearings for rolling mills, continuous casting, and furnace applications.
Automotive / EV
Wheel hub bearings, transmission bearings, and e-motor bearings for passenger and commercial vehicles.
Rail Transit
Axle box bearings, traction motor bearings, and gearbox bearings meeting EN/UIC railway standards.
Precision Machinery
High-precision spindle bearings, angular contact bearings, and super-precision bearings for CNC and robotics.
Application Design
EngineeringOur engineers analyze your operating conditions -- load, speed, temperature, environment -- and select or design the optimal bearing solution to maximize service life and reduce total cost of ownership.
Custom Modification
7-Day TurnaroundNeed non-standard dimensions, special materials, or modified clearances? We can modify standard SKF bearings or manufacture fully custom solutions with a 7-day prototype turnaround.
Failure Analysis
DiagnosticsWhen bearings fail prematurely, our team conducts root-cause analysis using advanced diagnostic tools to identify the failure mode and recommend corrective action.
Predictive Maintenance
Up to 40% Less DowntimeWe deploy vibration monitoring, thermal imaging, and oil analysis programs that detect bearing deterioration early -- reducing unplanned downtime by up to 40%.
On-site Installation
Global CoverageProper installation is critical to bearing performance. Our certified technicians provide on-site installation support, alignment verification, and operator training worldwide.
Lifecycle Support
Enterprise SLAFrom initial selection through end-of-life, our dedicated account managers provide scheduled maintenance plans, re-lubrication programs, and replacement forecasting for enterprise clients.
Why SKF China
The engineering partner advantage
7 Days
Prototype Lead Time
vs. 8-12 weeks via standard channels
15+
Certified Engineers
SKF-certified, on-call for your project
50+
Countries Delivered
Reliable global logistics network
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NACHI 6304 Deep Groove Ball Bearing for Bicycle Parts
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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