Ensure smooth, high-precision rotation in your industrial machinery with Needle Roller Bearings HK4020 40x47x20mm—engineered to deliver reliable performance even under heavy radial loads. Crafted from premium bearing steel and available in P0-P4 precision grades, these bearings minimize vibration and extend equipment lifespan, addressing the need for consistent operation in demanding manufacturing environments.
| Parameter | Details |
|---|---|
| Model NO. | HK4020 |
| 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 |
| Carton Pallet | |
| Specification | 40*47*20 mm |
| Origin | China |
| HS Code | 8482102000 |
| Production Capacity | 1000000 |
| Industry | Typical Equipment |
|---|---|
| Industrial Machinery | Machine Tools, Printing Equipment, Reducers |
| Automotive | Transmission Systems, Gearboxes |
| Agricultural Machinery | Harvesters, Tractors |
| New Energy | Wind Turbines, Photovoltaic Equipment |
| Home Appliances | Electric Motors, Pumps |
Industrial machinery operators know the cost of unexpected downtime—hours of halted production, missed deadlines, and costly repairs. When bearings fail prematurely, the root cause often traces back to imprecise components or inconsistent quality. Sourcing reliable needle roller bearings that balance precision, durability, and fast delivery can feel like a constant challenge, especially when dealing with custom specifications or urgent replacement needs.
Our HK4020 Needle Roller Bearings address these pain points with precision-engineered solutions designed for industrial machinery. As an integrated manufacturer with ISO9001 and ISO14001 certifications, we ensure each 40x47x20mm bearing meets P0-P4 precision standards, critical for machine tools, reducers, and printing equipment where minimal tolerance deviation directly impacts operational efficiency. With a 3-7 day delivery time and support for OEM/ODM customization, we eliminate the delays and inflexibility that plague traditional suppliers.
HK4020 Needle Roller Bearings excel in radial load applications, making them ideal for machinery components like gearboxes and transmission systems that require high load-carrying capacity in compact spaces. Constructed from high-grade bearing steel, these closed-style bearings deliver consistent performance under varying lubrication conditions—whether grease or oil—ensuring reliability in both high-speed rotations and heavy-load operations typical in manufacturing environments.
The technical specifications of our HK4020 bearings directly influence their performance in industrial settings. The precision rating (P0-P4) determines rotational accuracy, with higher grades (P4/P2) reducing vibration and noise in precision machinery like CNC tools. Clearance options (C0/C3/C4) allow customization for thermal expansion needs—critical in applications with temperature fluctuations. The "without inner/outer ring" design enables direct integration with machine shafts and housings, optimizing space utilization without compromising structural integrity.
Choosing non-genuine bearings may seem cost-effective initially, but the hidden expenses add up. Premature wear from substandard materials can lead to unplanned downtime, with each hour of production loss often exceeding the cost of a quality bearing. Our HK4020 Bearings, backed by 12-month global warranty and defect replacement policies, reduce total cost of ownership by minimizing failure risks. We adhere to strict quality control protocols, from raw material inspection to final product testing, ensuring each bearing meets international industry standards.
With 18 years of experience serving global buyers across Europe, America, and Southeast Asia, we’ve built a reputation for reliability. Our in-house R&D and QC lab ensure product consistency, while flexible order terms—including 1pc MOQ for standard items—support both small-batch repairs and large-scale production needs. We provide free technical guidance to help you select the right bearing for your application, and our defect replacement/refund policy offers peace of mind. As a trusted partner, we prioritize stable supply chains even amid raw material price fluctuations, ensuring your production lines stay operational.
Don’t let bearing issues slow down your production. Whether you need a single replacement or bulk order, our HK4020 Needle Roller Bearings are ready to ship. Send us your specifications, and our team will confirm compatibility and provide a quote within 24 hours. The sooner you order, the sooner you can restore your machinery to peak performance.
Q: Are these genuine HK4020 bearings?
A: Yes, we are an integrated manufacturer with full quality control from production to delivery. Each bearing is traceable through our QC processes and comes with certification documentation.
Q: How do I confirm if the HK4020 40x47x20mm bearing fits my equipment?
A: Provide your machinery model or shaft/housing dimensions, and our technical team will verify compatibility based on load, speed, and precision requirements.
Q: What is the warranty policy for these bearings?
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 1pc MOQ for standard HK4020 bearings, supporting both emergency repairs and small-scale projects.
Q: How quickly can you ship the bearings?
A: Standard orders ship within 3-7 days. For urgent needs, contact us for expedited shipping options.
Q: How can I verify the authenticity of the bearings?
A: Each bearing includes batch coding for traceability. We can provide manufacturing records and QC reports upon request to confirm authenticity.
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Send your bearing designation, application details, and quantity — we'll respond within 24 hours.
High-grade chrome steel, raw material QC, full-process monitoring, ISO/ABMA/DIN compliance.
Samples in 3-5 days, bulk orders 5-15 days. Free samples for distributors (freight collect).
P0-P4 precision grades, Z2-Z3-Z4 noise levels. Custom drawings welcome.
Professional technical guidance and failure solutions from our R&D team.
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