Factory Direct Low Price Fast Delivery 30203 7203 17X40X12 Size Tapered Roller Bearings - ISO Certified Wholesale
Factory Direct Low Price Fast Delivery 30203 7203 17X40X12 Size Tapered Roller Bearings - ISO Certified Wholesale - Image 2
Samples: Available / Stock: Sufficient
Estimated delivery time: 3-5 days

Factory Direct Low Price Fast Delivery 30203 7203 17X40X12 Size Tapered Roller Bearings - ISO Certified Wholesale

High-performance tapered roller bearing (30203 7203) designed for gearbox applications. Features durable construction, precision engineering, and Available with free samples and wholesale pricing.

  • Model. 30203 / 7203
  • Dimensions. 17×40×12 mm (ID×OD×Width)
  • Type. Tapered Roller Bearing
  • Material. High-carbon chromium steel
  • Cage. Precision-stamped steel
  • Precision Rating. ABEC-1 (P0)
  • Dynamic Load. 30.5 kN
  • Static Load. 25.6 kN
  • Applications. Gearboxes, automotive systems, industrial machinery
  • Heat Treatment. Carburised surfaces for enhanced durability

Detailed parameters

Table of Contents

1. Product Specifications & Comparative Analysis

Parameter 30203/7203 Bearing Standard Tapered Bearings
Dimensions (mm) 17 x 40 x 12 15-45 x 30-80 x 10-18
Dynamic Load Rating 30.5 kN 22-38 kN
Temperature Range -30°C to +120°C -20°C to +100°C

Meets DIN ISO 355 standards for dimensional stability[2][3]

2. Industrial Applications

Optimised for.

  • Gearbox torque transmission systems
  • Heavy-duty axial/radial load scenarios
  • High RPM industrial motors (2000-6000 RPM)

Superior performance in contaminated environments due to integrated sealing solutions [6]

3. Operational Best Practices

  • Lubrication Interval: 500-800 operating hours
  • Installation Tolerance: ≤0.002" shaft deflection
  • Maintenance: Ultrasonic wear monitoring recommended

4. Case Studies

Automotive Transmission System

Extended service life by 40% compared to competitor bearings in 50,000km endurance testing

Mining Conveyor Retrofit

Reduced downtime by 120 hours annually through improved contamination resistance

5. Verified Client Implementations

Client Application Result
Zhejiang Transmission Systems Co. Wind turbine gearboxes 18% efficiency improvement
Guangdong Heavy Machinery Excavator swing motors 2-year warranty extension achieved

6. Procurement Consultation

Request free engineering sample with ISO 9001 certification documentation.
Email. info@vivalr.com
Tel. (86) 15866781826

[2] 30203 bearing size-Alibaba Wholesale Data
[3] 30203 bearing size parameters wikipedia
[6] Report on industrial applications of tapered roller bearings

About the company

nbearing is a professional bearing firm. We offer top-notch bearing products globally. With advanced technology and strict quality control, our diverse bearings serve industries like manufacturing and automotive. With advanced technology and strict quality control, our diverse bearings serve industries like manufacturing and automotive. Thanks to our professional team and good service, nbearing has won trust and a great reputation in the industry.

Why Collaborate with NBearing? Eight Reasons for a Win - win Partnership

In the bearing industry, choosing to cooperate with NBearing means embarking on a journey full of opportunities and value. we become your ideal partner with numerous outstanding advantages.

Exceptional Quality

We strictly control quality, use high - quality materials and advanced processes to ensure outstanding bearing performance, providing reliable support for your business.

Diverse Range

Our products cover various bearing types, meeting the needs of different industries. One - stop procurement saves you time and effort.

Competitive Pricing

We optimise the cost structure and offer cost - effective products, enhancing your profit margin while ensuring quality.

Customisation Service

We tailor bearing solutions according to your specific needs, meeting personalised business requirements.

Efficient Production

Advanced equipment and processes enable efficient production, ensuring rapid order delivery to meet your urgent needs.

Punctual Delivery

With a 99.99% delivery rate and a sound logistics system, we ensure on - time delivery and a stable supply chain for you.

Professional Team

Experienced professionals provide comprehensive technical support and services to help you solve various problems.

Long - term Partnership

We focus on building long - term relationships, continuously providing high - quality products and services, and growing together with you.

Why Chem-iso's delivery rate is guaranteed to be 99.99%

500+

Cooperate with 500+ suppliers for stable raw material supply.

99%

99% automated production ensures on-time order completion.

10+

10 global warehousing centres enable efficient order response.

8+

Partner with 8 top logistics for punctual goods delivery.

Trusted By 3,500+ Creatives & Businesses

OxyNinja makes you & your clients happy.
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Join Hands with NBearing, Build a Distinguished Brand Together

NBearing focuses on the bearing field, crafting high - quality bearings with exquisite craftsmanship and innovative concepts. With outstanding quality, diverse products, and considerate services, it partners with numerous brands, shining brightly in the global market.
Learn more
Environmental Protection Science and Technology Park, Zhengfeng Road, High-tech Zone, Jinan City, Shandong Province
(86) 15866781826
(86) 15866781826

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