-- SKF Authorized Engineering Partner
Ensure smooth, reliable performance for your motorcycle engine with our precision-engineered Motorcycle Engine Thrust Bearing 51103. Built to handle radial loads and reduce friction in high-stress environments, this bearing keeps your engine running cooler and more efficiently, even during extended rides.
15+ Certified Engineers On-Call
Free application analysis · Failure diagnosis · Custom modification guidance. Response within 24 hours.
| Parameter | Details |
|---|---|
| Model Number | 6805 |
| Seals Type | Zz, 2RS, Open |
| Lubrication | Grease or Oil |
| Precision Rating | P0, P6, P5, P4 |
| Vibration | Z1V1, Z2V2, Z3V3 |
| Aligning | Non-Aligning Bearing |
| Separated | Unseparated |
| Rows Number | Single |
| Load Direction | Radial Bearing |
| Material | Bearing Steel |
| Contact Angle | 0° |
| Specification | 25*37*7 mm |
| Origin | China |
| HS Code | 8482102000 |
| Industry | Typical Applications |
|---|---|
| Automotive | Motorcycle engine components, transmission systems |
| Industrial Machinery | Automation equipment, small rotating mechanisms |
Finding the right bearing for motorcycle engines can be frustrating—mismatched dimensions lead to installation delays, while low-quality materials cause premature wear and costly breakdowns. Sourcing from multiple suppliers for different brands only adds complexity to your procurement process.
Our Motorcycle Engine Thrust Ball Bearing 51103 addresses these challenges with ISO 9001-certified manufacturing and a comprehensive product range that includes all major international and domestic brands. With现货库存 (ready stock) and low minimum order quantities, we ensure you get the right bearing when you need it, whether for routine maintenance or production lines.
This single-row radial bearing is designed to handle radial loads efficiently, making it ideal for motorcycle engine crankshafts and gearbox assemblies where stable rotation under load is critical. Its non-aligning design works best in applications with minimal shaft misalignment, ensuring smooth operation even in high-vibration environments typical of motorcycle engines.
The 25*37*7 mm precision dimensions ensure compatibility with standard motorcycle engine components, while bearing steel construction provides the hardness needed to resist wear under continuous use. Available precision ratings from P0 to P4 allow selection based on application requirements—P4 for high-speed engines demanding tight tolerances, or P0 for cost-effective general use. Multiple seal options (Zz, 2RS, Open) let you choose the right protection against contaminants, with 2RS seals offering enhanced grease retention for extended maintenance intervals.
Investing in a quality thrust ball bearing reduces long-term costs by minimizing downtime. Inferior bearings often fail early due to substandard material hardness or imprecise dimensions, leading to engine damage and unplanned repairs. Our bearings undergo rigorous testing for dimensional accuracy and surface hardness, ensuring they meet industry standards and perform reliably over their service life. By selecting the correct precision class and seal type upfront, you avoid the hidden costs of frequent replacements and maintenance.
Our production process adheres to ISO 9001 standards, with strict raw material inspection and finished product testing for dimensions, hardness, and surface treatment. We stand behind our products with a warranty covering manufacturing defects, and our ability to handle OEM/ODM requests means we can customize bearings to your exact specifications. With access to a wide range of brands, we serve as a single source for all your bearing needs, simplifying procurement and ensuring consistent quality.
Whether you need the 51103 model or other bearing types, provide us with your required model, dimensions, and quantity, and we’ll deliver competitive pricing and lead time. Our team can also assist with cross-referencing brands to find the right fit for your application.
Q: Do you supply bearings from other brands besides your own?
A: Yes, we offer a full range of bearings including international brands (SKF, NSK, NTN, Koyo, etc.) and domestic Chinese brands. We can source specific brands as per your requirements.
Q: How can I confirm if this bearing fits my motorcycle engine?
A: Provide your engine model or existing bearing dimensions (inner diameter, outer diameter, width), and our technical team will verify compatibility with the 51103 specifications.
Q: What is your warranty policy for bearings?
A: We provide a warranty against manufacturing defects. The specific duration and terms are outlined in our sales contract, with replacement or refund options for qualifying issues.
Q: What is the minimum order quantity for this bearing?
A: We support low minimum order quantities, making it suitable for both small maintenance orders and large production runs. Contact us for details based on your required quantity.
Q: How long does shipping take, and what methods are available?
A: For in-stock items, we ship within 1-3 business days. Shipping methods include express courier (3-5 days), air freight (5-7 days), or sea freight (20-30 days), depending on your location and urgency.
Q: Can you produce custom bearings with specific dimensions or features?
A: Yes, we offer OEM/ODM services. Provide your technical drawings or specifications, and we can manufacture bearings tailored to your application requirements.
Ready to order or need a quote?
Send the bearing model, dimensions (d x D x B), and quantity — we’ll get back to you with pricing and lead time.
Contact us via email or our online form for prompt assistance.
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Official partner since 1998 with direct access to SKF technical resources, genuine products, and engineering expertise.
In-house team provides application design, failure analysis, and predictive maintenance -- reducing bearing failures by 35%.
Every product undergoes rigorous pre-shipment inspection with full documentation for traceability and compliance.
Dedicated account managers and reliable delivery networks ensure on-time supply for enterprise clients worldwide.
Performance Metrics
35%
Failures Prevented
70%
Downtime Reduction
25+
Years Experience
24h
Quote Response
78% of large enterprises prefer suppliers offering integrated technical support and lifecycle services.
Custom bearing selection and system design based on your specific load conditions, speeds, temperatures, and environmental factors.
Root-cause investigation of bearing failures using metallurgical testing, vibration analysis, and operating data review.
IIoT-enabled monitoring with smart sensor bearings for real-time vibration, temperature, and RPM tracking.
Modified bearings with special coatings, seals, tolerances, or materials. Lead time 8-12 weeks from official channels.
Certified engineers available for on-site installation support, alignment checks, and commissioning assistance worldwide.
Long-term service agreements including regular maintenance checks, replacement scheduling, and performance reporting.
Free samples available for orders over $50K
Validated against your KPIs before full production commitment.
-- Get In Touch
Our certified engineers will review your application requirements and provide a detailed quote within 24 hours.
Address
No. 377 Bansongyuan Road, Huangpu District, Shanghai, China
Free Sample Program
Orders over $50K qualify for free product samples
Test against your KPIs before full production commitment. Ask our engineers for details.
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