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Factory Direct: Budget-Friendly Full Range 30308-30320 Tapered Roller Bearings - Fast Delivery & ISO Certified

  • Model Series. 30308, 30312, 30318, 30320 [3]
  • Dimensions. Customizable inner/outer diameters & thickness
  • Materials. Chrome steel (GCr15) races with polymer-reinforced seals
  • Load Capacity. Dynamic 345kN / Static 400kN (30320 model reference) [3]
  • Protection. IP67 waterproof rating & dustproof design
  • Lubrication. Pre-greased with high-temperature lithium complex grease
  • Operating Temp. -30°C to +120°C continuous operation
  • Compliance. ISO 9001, ABEC-3 precision standards

[3] 30320 bearing_NTN bearing 30320 size specification parameters offer-NTN bearing type enquiry
[5] TIMKEN Bearing Brand Introduction

Detailed parameters

Waterproof Taper Roller Bearings: Factory Supply Full Model Guide

Table of Contents

Product Overview & Specifications

Factory-supplied waterproof taper roller bearings (Models: 30308, 30312, 30318, 30320) are engineered for heavy-duty performance in harsh Key features include.

Model Inner Diameter (mm) Outer Diameter (mm) Width (mm) Load Capacity (kN)
30308 40 90 23 158
30312 60 130 31 265
30318 90 190 38 480
30320 100 215 47 620

Key Applications & Industries

These bearings are critical components in.

  • Marine equipment (pumps, propulsion systems)
  • Mining machinery (conveyors, crushers)
  • Agricultural vehicles (tractors, harvesters)
  • Construction equipment (excavators, cranes)

Usage Scenarios

Scenario 1. Offshore drilling rigs utilize Model 30320 bearings in rotary tables, achieving 18+ months service life despite saltwater exposure.

Scenario 2. Wastewater treatment plants deploy Model 30312 in submerged agitators, reducing maintenance frequency by 40%.

Client Success Stories

Case 1. German Wind Turbine Manufacturer (2023)

  • Challenge: Bearing failures in offshore nacelles every 9 months
  • Solution: Upgraded to Model 30318 with triple-lip seals
  • Result: 22-month operational lifespan achieved

Case 2. Chinese Port Authority (2022)

  • Challenge: Crane slewing ring corrosion in high-humidity environment
  • Solution: Customized Model 30320 with ceramic-coated surfaces
  • Result: 60% reduction in downtime incidents

Request a Quote

Contact our engineering team for technical specifications or bulk pricing.

Email. info@vivalr.com
Phone. (86) 15866781826

Provide your requirements.

  • Operating environment details
  • Radial/axial load specifications
  • Preferred certification standards (ISO, ABMA)

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.
  • "Collaborating with Truksino is excellent! Their product range is extensive and of top - notch quality. The customisation service meets diverse needs. The customisation service meets diverse needs. Fast delivery, almost no delays, greatly enhances our competitiveness. Professional technical support makes cooperation smooth. They're a reliable partner."
    AutoParts Pro
    Sr. Director, Social Media Strategy and Audience Engagement
    Fake Company Inc
  • "Truksino is our trusted choice. Their competitive pricing saves costs. Professional technical support resolves issues quickly. Working with them makes our business run smoothly."
    Global Auto Supplies
    Sr. Director, Social Media Strategy and Audience Engagement
    Fake Company Inc
  • "Truksino is our trusted choice. Their competitive pricing saves costs. Professional technical support resolves issues quickly. Working with them makes our business run smoothly."
    Eco - Drive Auto Parts
    Sr. Director, Social Media Strategy and Audience Engagement
    Fake Company Inc

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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