Needle Roller Bearings

Needle Roller Bearing NA4834 NA4836 NA4838 for Industrial Machinery, P0-P4 Precision

SKU: 4443802a9a9e In Stock

Ensure smooth, long-lasting operation for your industrial machinery with the Needle Roller Bearing NA4834, NA4836, NA4838—engineered to deliver P0-P4 precision and reliable performance under heavy radial loads. Crafted from high-grade bearing steel with C0/C3/C4 clearance options, this closed-style bearing (170*215*45mm for NA4834) eliminates the need for separate inner/outer rings, streamlining installation while maintaining strict dimensional accuracy.

  • Grease or oil lubrication flexibility adapts to diverse industrial environments, reducing maintenance downtime
  • 3-7 day delivery ensures minimal production delays, backed by Saifan’s ISO 9001-certified quality control
  • OEM/ODM support available to match custom specifications, solving unique machinery compatibility challenges
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. NA4834
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 3-7 days
Service OEM ODM
Transport Package Carton Pallet
Specification 170*215*45 mm
Origin China
HS Code 8482102000
Production Capacity 1000000

Application Industries

Industry Typical Equipment
Industrial Machinery Machine Tools, Printing Equipment, Reducers
Automotive Transmission Systems, Engine Components
Agricultural Machinery Harvesters, Tractors
New Energy Wind Turbines, Photovoltaic Equipment
Heavy Machinery Excavators, Construction Equipment

Eliminate Downtime with NA4834 Needle Roller Bearings for Industrial Machinery

Manufacturing plants lose thousands in production costs yearly due to bearing failures. Misaligned precision, short service life, and delayed deliveries of critical components like needle roller bearings often disrupt entire production lines. When machinery grinds to a halt, every hour counts—especially for high-precision equipment where standard parts can’t meet performance demands.

NA4834 Needle Roller Bearings: Engineered for Reliable Industrial Performance

Our NA4834 Needle Roller Bearing addresses these challenges with P0-P4 precision ratings, ensuring compatibility with high-speed industrial machinery. As an integrated manufacturer with ISO9001 certification, we control production from raw material selection to final inspection, delivering bearings that maintain stable performance even under radial loads. With 1pc MOQ for standard items and 3-7 days delivery, we support both emergency repairs and bulk production needs without compromising quality.

Optimal Performance in Demanding Industrial Environments

This needle roller bearing excels in applications requiring high radial load capacity and compact design—ideal for machine tool spindles, printing presses, and reducers. Its closed type construction and bearing steel material provide durability in continuous operation, while options for grease or oil lubrication allow adaptation to specific machinery requirements. Whether operating in moderate temperatures or high-vibration settings, the NA4834 maintains clearance stability (C0/C3/C4) to prevent premature wear.

Key Technical Attributes That Drive Machinery Efficiency

Precision rating directly impacts machinery accuracy: P4 grade bearings reduce runout to 5μm, critical for CNC machine tools where even minor deviations affect workpiece quality. The 170*215*45 mm specification balances load capacity with space constraints, supporting radial forces without increasing equipment footprint. Clearance grades C3 and C4 accommodate thermal expansion in high-temperature applications, while the closed design minimizes contamination risks in dusty industrial settings. These engineering details translate to longer bearing life and fewer maintenance interruptions.

Why Authentic Bearings Lower Total Cost of Ownership

Counterfeit needle roller bearings may offer lower upfront prices, but they often fail within months, causing secondary damage to shafts and housings. Our bearings undergo rigorous QC testing, including dimensional inspection and material analysis, ensuring compliance with international standards. With a 12-month global warranty, we stand behind every unit—meaning you avoid unexpected replacement costs and production downtime. For industrial machinery makers, investing in authentic P0-P4 precision bearings reduces long-term expenses by up to 40% compared to frequent low-quality replacements.

Your Trusted Partner for Industrial Bearing Solutions

Since 2005, Jinan Saifan Bearing has served global buyers across Europe, America, and Southeast Asia, building a reputation for stable supply and technical expertise. Our in-house R&D team and QC lab ensure each bearing meets design specifications, while OEM/ODM capabilities allow customization for unique machinery requirements. We provide free technical guidance to help select the right clearance and precision等级, and our defect replacement policy ensures peace of mind. With production capacity of 1,000,000 units annually, we maintain stock for rapid delivery, even during peak demand periods.

Packaging & Shipping

  • Carton pallet packaging with protective inner layers to prevent damage during transit
  • 3-7 days delivery for standard orders, with expedited options available for emergency needs
  • Flexible shipping via TNT, DHL, or sea freight based on order size and urgency
  • Real-time tracking numbers provided once shipment is dispatched
  • 1pc minimum order quantity supported for critical replacement scenarios

Secure Your Machinery’s Performance Today

Don’t let bearing issues derail your production schedule. Whether you need NA4834, NA4836, or NA4838 bearings, our team can confirm compatibility with your equipment and provide a detailed quote. With fast sample provision and bulk delivery, we help minimize downtime and keep your machinery running at peak efficiency.

Frequently Asked Questions

Q: Are these genuine needle roller bearings?

A: Yes, all our bearings are manufactured in-house under ISO9001 and ISO14001 certifications, with full traceability from raw materials to finished products.

Q: How do I confirm if the NA4834 fits my machinery?

A: Provide your equipment model or shaft/housing dimensions, and our technical team will verify compatibility and recommend the appropriate clearance and precision等级.

Q: What is the warranty period for these bearings?

A: We offer a 12-month global warranty covering manufacturing defects, with free replacement or refund available for non-conforming products.

Q: What is the minimum order quantity?

A: Standard items have a 1pc MOQ, supporting both emergency repairs and small-batch testing.

Q: How quickly can I receive my order?

A: Samples are available in 3-5 days, and bulk orders ship within 5-15 days depending on specifications.

Q: How can I verify the authenticity of the bearings?

A: Each bearing includes production batch codes, and we can provide material test reports and certification documents upon request.

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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