Needle Roller Bearings

Needle Roller Bearing NK40/20 40x50x20mm P0-P4 Precision for Industrial Machinery

SKU: a0631c8ecff2 In Stock

Ensure smooth, precise rotation in your industrial machinery with the Needle Roller Bearing NK40/20, engineered to deliver reliable performance even under heavy radial loads. This 40x50x20mm precision component (P0-P4 grades available) minimizes vibration and extends equipment lifespan, addressing the common challenge of maintaining consistent operation in demanding work environments.

  • Radial design without inner/outer rings allows for space-saving integration in tight mechanical assemblies
  • High-grade bearing steel construction ensures durability, while grease/oil lubrication flexibility adapts to your maintenance routine
  • Backed by our ISO-certified manufacturing process and 12-month warranty, with samples available for fit testing before bulk orders
Wholesale Price (FOB)
¥1.50
MOQ: 1 Piece • Bulk discounts available on inquiry
12-Month Warranty
Free Samples
Global Shipping
Product Specifications

Technical Details & Description

Product Specifications

Parameter Details
Model NO. NK40/20
Load Direction Radial Bearing
Style Without Outer Ring, Without Inner Ring
Material Bearing Steel
Type Closed
Product Name Needle Roller Bearing
Lubrication Grease or Oil
Precision Rating P0 P6 P5 P4 P2
Clearance C0 C3 C4
Delivery Time 3-7days
Service OEM ODM
Transport Package Carton Pallet
Specification 40*50*20 mm
Trademark BDL
Origin China
HS Code 8482102000
Production Capacity 1000000

Application Industries

Industry Typical Equipment
Industrial Machinery Machine Tools, Printing Machinery, Reducers
Automotive Transmissions, Gearboxes
Agricultural Machinery Harvesters, Tractors
New Energy Wind Turbines, Photovoltaic Equipment
Home Appliances Electric Motors, Compressors

Prevent Costly Downtime with NK40/20 Needle Roller Bearing for Industrial Machinery

Industrial machinery operators know the frustration of unexpected downtime caused by bearing failure. When low-quality bearings wear prematurely, production lines halt, maintenance costs rise, and delivery deadlines are missed. Sourcing reliable precision bearings with flexible order options and fast delivery can mean the difference between meeting targets and losing profits.

NK40/20 Needle Roller Bearing: Engineered for Reliable Industrial Performance

The NK40/20 Needle Roller Bearing addresses these challenges with its robust design and versatile performance. As an integrated manufacturer with full R&D capabilities and ISO9001 certification, we ensure each bearing meets P0-P4 precision standards, making it suitable for high-demand industrial applications like machine tool spindles and printing presses. With a 3-7 day delivery time and OEM/ODM support, we adapt to both standard requirements and custom specifications.

Optimal Performance in Demanding Industrial Conditions

This radial needle bearing excels in applications requiring high radial load capacity within limited space. The 40x50x20mm dimensions make it ideal for compact machinery components, while the closed design protects against contaminants in manufacturing environments. Whether operating in high-speed rotary systems or handling heavy loads in agricultural equipment, the NK40/20 delivers consistent performance under varying conditions.

Key Technical Features That Maximize Machinery Efficiency

The precision rating of P0-P4 ensures minimal vibration and noise, critical for maintaining accuracy in CNC machines and printing equipment. Bearing steel construction provides excellent wear resistance, extending service life even in continuous operation. Clearance options (C0, C3, C4) allow customization for thermal expansion needs, preventing seizure in temperature-fluctuating environments. The grease or oil lubrication flexibility ensures compatibility with existing maintenance protocols, reducing operational disruptions during servicing.

Why Quality Bearings Reduce Total Cost of Ownership

Choosing genuine NK40/20 Precision Roller Bearings over low-cost alternatives minimizes long-term expenses. Inferior bearings often fail prematurely, leading to unplanned downtime, replacement parts, and labor costs that far exceed initial savings. Our bearings, backed by ISO14001 environmental standards, offer reliable rotation that lowers maintenance frequency and energy consumption. The 12-month global warranty further protects your investment, providing defect replacement or refund for manufacturing issues.

Our Commitment to Your Production Continuity

With 18 years of experience serving global buyers across Europe, America, and Southeast Asia, we understand the critical role bearings play in your operations. Our QC lab conducts rigorous testing to ensure each bearing meets precision requirements, while flexible order options (1pc MOQ for standard items) support both emergency repairs and bulk production needs. Free technical guidance helps optimize bearing selection for specific applications, and our responsive after-sales team ensures fast resolution of any issues. We maintain a production capacity of 1,000,000 units annually, ensuring stable supply even for large-scale projects.

Packaging & Shipping

  • Secure carton and pallet packaging to prevent damage during transit
  • 3-7 days delivery time for standard orders
  • Multiple logistics options including express (DHL, FedEx) and sea/air freight
  • Real-time tracking provided for all shipments
  • 1pc minimum order quantity to support emergency maintenance needs

Get Your NK40/20 Bearing Delivered Fast

Every day of equipment downtime impacts your bottom line. Whether you need a single replacement bearing or bulk order for production, we ensure prompt delivery and reliable performance. Send us your requirements today to get started.

Frequently Asked Questions

Q: Are these bearings authentic and traceable?

A: Yes, our bearings are manufactured in our ISO9001-certified facility and come with full traceability documentation. We provide batch testing reports upon request.

Q: How do I confirm if the NK40/20 is suitable for my machine?

A: Our technical team can assist with选型 based on your equipment specifications, load requirements, and operating conditions. Please provide details about your application for personalized guidance.

Q: What is the warranty policy for this bearing?

A: We offer a 12-month global warranty covering manufacturing defects. Defective products will be replaced or refunded at no additional cost.

Q: What is the minimum order quantity?

A: We accept orders for 1 piece of standard bearings, making it easy to source emergency replacement parts.

Q: How quickly can I receive my order?

A: Standard orders ship within 3-7 days. For urgent requests, contact us to discuss expedited production and shipping options.

Q: Can you provide custom bearing solutions if the NK40/20 doesn’t meet my needs?

A: Yes, we offer full OEM/ODM customization services. Our engineering team can develop bearings to your exact specifications, including material, precision, and design modifications.

Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.

Sample Policy

Free samples available for distributors. 3–5 days production lead time.

Bulk Delivery

5–15 days for bulk orders. T/T, L/C and Alibaba payments accepted.

Certifications

ISO 9001:2015, ISO 14001 certified. ABMA / DIN compliant.

After-Sales

12-month warranty plus dedicated technical failure analysis support.

Engineering Insights

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