INA NK6/10-TV-XL Needle Roller Bearing 6x12x10mm Genuine

Sourcing Verification Documentation

• Supplier Certificate of Conformity (COC) referencing the specific batch of NK6/10-TV-XL needle rollers to establish chain of custody from the INA production facility.
• Third-Party Dimensional Inspection verifying Fw 6mm and D 12mm tolerances against ISO 492 standards, ensuring the bearing fits the designated housing without manual rework.
• Origin Certification required for customs compliance in markets with strict anti-dumping or trade agreement protocols.
• Material Traceability Records confirming the bearing steel grade and polyamide cage composition for quality assurance audits.
• HS Code Assistance to facilitate accurate import declarations and prevent logistics delays at the port of entry.

Storage & Installation Best Practices

• Retain Original Packaging until the moment of installation. The INA factory wrap prevents moisture ingress that could compromise the bearing steel surface and the polyamide cage integrity.
• Climate-Controlled Storage is essential; while the TV cage handles temperatures up to +120°C, prolonged exposure to UV light or ozone during storage can degrade polyamide properties over time.
• Clean Assembly Environment is critical for open-type bearings. Without seals, any particulate contamination introduced during mounting will immediately embed in the grease and score the needle rollers.
• Interference Fit Protocol: Pressing the INA NK6/10-TV-XL into the housing requires precise alignment. Because the bearing lacks an outer ring, the housing bore itself acts as the outer race; ovality or taper in the housing will directly transmit to the rollers, causing edge-loading and premature spalling.
• Lubrication Compatibility: Ensure the selected grease is compatible with polyamide cages. Certain EP (Extreme Pressure) additives containing sulfur or chlorine can chemically attack the cage material, leading to brittle fracture under high-speed conditions [NEED_CITE: polyamide cage chemical compatibility with EP additives].

Request Technical Verification & Pricing

To ensure the INA NK6/10-TV-XL meets your specific application requirements, we invite procurement engineers and maintenance managers to initiate a technical review. Please provide your OEM equipment number or operating parameters (load, speed, housing bore tolerance) so our team can verify cross-reference compatibility and confirm the suitability of the TV polyamide cage for your thermal environment.

Contact our technical sales team for a detailed quote and documentation package:

• Email: sales@bearing-sourcing.com
• WhatsApp/WeChat: +86-183-3999-2020

Frequently Asked Questions

Q: How can I verify the authenticity of the INA NK6/10-TV-XL before installation? A: Genuine INA bearings feature specific laser markings and batch codes on the packaging and, where applicable, the bearing itself. We provide a QR code verification pathway via the official Schaeffler/INA app and support third-party inspection of the packaging hologram and batch traceability documents to confirm origin.

Q: What is the difference between the TV (polyamide) cage and a steel cage for this size? A: The TV suffix indicates a glass-fiber-reinforced polyamide cage. It is significantly lighter than steel, allowing for higher acceleration and speed capabilities while running quieter. However, it has a lower maximum operating temperature limit (typically +120°C) compared to a steel cage. If your application involves high sustained heat or aggressive chemical solvents, a steel-cage alternative might be required.

Q: Can I use this bearing without an inner ring if my shaft is hardened? A: Yes. The NK6/10-TV-XL is designed for use directly on a hardened and ground shaft. If your shaft cannot be hardened to at least 60 HRC with a surface roughness of Ra 0.4 µm or better, you must use a separate inner ring (IR series) to prevent rapid wear of the shaft and premature failure of the needle rollers.

Q: What does the XL suffix mean for this specific bearing? A: The XL suffix typically denotes the "X-life" premium performance class from INA, which generally implies optimized internal geometry and surface finishes for extended rating life and load capacity. However, for specific engineering calculations regarding dynamic load ratings, please request the manufacturer's latest datasheet to confirm the exact performance parameters for this specific batch.

Q: Do you offer cross-reference support if I am replacing a competitor's part? A: Yes. We provide cross-reference matching that goes beyond the basic dimensions. We verify the cage material (polyamide vs. steel), the presence or absence of seals, and the internal clearance class to ensure the replacement performs reliably in your specific machinery.