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Factory Direct Super-Precision Roller Bearings for Machine Tools
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
AvailableRolling Body
Roller BearingsThe Number of Rows
DoubleModel NO.
NN3021K/P5 NN3021K/C1W33 NN3021K/P4Outer Dimension
Medium and Large(120-190mm)Material
Bearing SteelSpherical
Aligning BearingsLoad Direction
Axial BearingSeparated
SeparatedBearing Part
Complete BearingNumber of Rows
2Design
NnNumber of Flanges, Outer Ring
0Number of Flanges, Inner Ring
3Radial Internal Clearance
C1Transport Package
Standard Specifications or CustomizedSpecification
Standard Packaging or CustomizedTrademark
JudongOrigin
ChinaHS Code
84825000Key features
High Load & Rigidity: Double-row structure provides greater load capacity and rigidity for machine tool spindles.
Super Precision Grades: Available in P4 and P2 grades for ultra-high precision in aerospace and semiconductor manufacturing.
Vibration Minimization: Design minimizes thermal deformation and vibration, improving machining accuracy and efficiency.
Separable Structure: Facilitates easy assembly and maintenance, enhancing equipment longevity and reliability.
Multiple Cage Options: Brass, steel, or polyamide cages available to suit high-speed, heavy-load, or medium-speed needs.
Custom Branding: MOQ 10-5000 pcs allows for customized branding on complete bearings.
Fast Delivery: 5-8 days for in-stock items; 15-20 days for non-stock items depending on quantity.
20+ Years Experience: Manufacturer with over 20 years of expertise, prioritizing quality as core culture.
Company profile
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 minimum order quantity?
A:
The MOQ is 10-5000 pcs, which can be customized for your brand bearings.
Q:Are you a trading company or manufacturer?
A:
We are a manufacturer with over 20 years of experience in bearing production.
Q:What is the delivery time?
A:
Generally 5-8 days if goods are in stock, or 15-20 days if not in stock, depending on quantity.
Q:What causes bearing noise?
A:
Noise is affected by bearing type, usage, lubricant, load, and installation. Contact engineers for solutions.
Q:What precision grades are available?
A:
Grades include P0, P6, P5, P4, and P2, with P4/P2 being super precision for high-speed applications.
Send Inquiry
*To:
Zhejiang Judong Bearing Co., Ltd.
Zhejiang Judong Bearing Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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