What cage materials are available?

The cages are available in Brass (high strength, suitable for high-speed), Steel (high load capacity), and Polyamide (lightweight, low friction).

What is the warranty period?

We provide a comprehensive 2-year warranty for all our mechanical equipment.

Premium Quality Nn3030K Double Row Roller Bearing for Industry

Name: Premium Quality Nn3030K Double Row Roller Bearing for Industry
Brand: Zhejiang Judong Bearing Co., Ltd.
SKU: 2192123045

Zhejiang, ChinaZhejiang Judong Bearing Co., Ltd.

US$1.30

1-99 Pieces

US$1.10

100-399 Pieces

US$0.86

400+ Pieces

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Rolling Body

Roller Bearings

The Number of Rows

Double

Model NO.

NN3030K NN3030K/W33 NN3030K/P4W33

Outer Dimension

Medium and Large(120-190mm)

Material

Bearing Steel

Spherical

Aligning Bearings

Load Direction

Axial Bearing

Separated

Bearing Part

Complete Bearing

Number of Rows

Design

Number of Flanges, Outer Ring

Number of Flanges, Inner Ring

Radial Internal Clearance

Transport Package

Standard Specifications or Customized

Specification

Standard Packaging or Customized

Trademark

Judong

Origin

China

HS Code

84825000

Key features

High Load Capacity: Double-row roller structure provides greater load capacity and rigidity than single-row bearings.

High Precision Grades: Available in P0 to P2 grades, suitable for ultra-precision applications like aerospace and semiconductors.

Separable Design: Facilitates easy assembly and maintenance, enhancing equipment longevity and reliability.

Multiple Cage Materials: Options include Brass, Steel, and Polyamide cages for different speed and load requirements.

Vibration Reduction: Design minimizes thermal deformation and vibration, improving machining accuracy in spindles.

Custom Branding: 10-5000 pcs customized for your brand bearings available.

Company profile

High Repeat Buyers ChoiceFast DeliveryFull CustomizationIn-stock Capacity

Zhejiang Judong Bearing Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryAverage Response Time: ≤11.67hTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier operates in steel, rubber products, instruments and meters, and lubricants, with stated import and export authorization. It reports substantial export activity, flexible customization, quality-management certifications, 41–50 quality-control staff, and production output data. However, raw-material and quality traceability status is unknown, quality-control test equipment is listed as zero, and R&D audit documentation is unavailable. Overseas service coverage is limited, with no overseas showroom, agent, branch, or offline trade-show participation. Service procedures exist but lack written records. Financial information is inconsistent across the provided records, so financial credibility cannot be confirmed. No evidence of named customer cases or major-brand OEM service is provided.

Supplier typeThe supplier covers steel, rubber products, instruments and meters, and lubricants, and states that it has self-operated import and export rights. Export sales are reported at 71%–90%, although the stated exporting history is 0 years, creating a record inconsistency.

CertificationsThe supplier reports TS 16949, ISO 9001, and ISO 14001 certifications. These are explicit certification holdings relevant to automotive quality, general quality management, and environmental management.

After-Sales capabilityThe supplier has no overseas showroom, agent, branch, overseas-service country coverage, or offline trade-show participation. It reports service procedures for corrective actions and complaints, but no written records, while lead times are stated as within 15 workdays in both peak and off-season.

Production capacityThe supplier states that it supports both small-batch customization and large-scale orders, reports 41–50 quality-control staff, and provides annual production-output information. However, quality-control test equipment is listed as zero, which is an explicit production and quality-control deficiency.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization, and states that R&D responsibilities are customized to customer needs. This supports broad customization capability, although the limited R&D documentation reduces verification depth.

Product Q&A

Q:What is the MOQ?

10-5000 pcs customized for your brand bearings.

Q:Are you a trading company or manufacturer?

We have the manufacturing bearings for more than 20 years, 'Quality is our culture'

Q:How long is your delivery time?

Generally it is 5-8 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q:What causes bearing noise?

Bearing noise is a function of both the bearing and the way it is used. Some external factors that affect bearing noise include lubricant type, excessive bearing load, and improper installation. Once the abnormal noise occurs, you can contact our engineers, we will help you find the reasons and provide the appropriate solutions.

Q:What are the available precision grades?

Common precision grades include P0 (Normal), P6 (Precision), P5 (High Precision), P4 (Super Precision), and P2 (Ultra Precision) according to ISO, DIN, and GB/T standards.