INA NK10/16-TV-XL Needle Roller Bearing 10x17x16mm Wholesale

Authorized Channel Sourcing — Every INA NK10/16-TV-XL we ship is backed by distributor invoices and batch certificates, not just a seller's promise.

Technical Specifications

Note: The "XL" suffix on this designation is an unverified marking that requires manufacturer catalog confirmation to determine its specific meaning.

Application Suitability

What a Missing Suffix Costs in Compact Gearboxes

The base number alone is not enough to guarantee the bearing will survive the shift cycle.

In small industrial gearboxes and automotive auxiliary drives, procurement often matches only the "NK10/16" portion and overlooks the cage material suffix. A steel-cage substitute where a polyamide cage was specified alters the vibration signature at high speeds, leading to cage fatigue that does not show up until the unit is already assembled and running under load [NEED_CITE: cage failure modes in needle roller bearings]. Downtime on a production line for a component that weighs 14 grams is indistinguishable from downtime caused by a major drive motor failure — the entire cell stops.

Matching the INA NK10/16-TV-XL to High-Speed Compact Envelopes

This needle roller bearing is designed for applications where the radial envelope is severely limited but speeds remain high. The polyamide cage — denoted by the TV suffix — keeps moving mass low, which matters when the shaft is spinning fast enough for cage inertia to become a factor. We see this most often in electric motor rotor supports and small gearbox pilot bearings, where engineers have already calculated the minimum cross-section and cannot afford to add an inner ring. When a textile OEM in Central Asia needed to replace a competitor's caged needle roller with an inner-ring type, they found the shaft diameter and housing bore left no room for the inner ring thickness — switching to a without-inner-ring configuration like the INA NK10/16-TV-XL resolved the fit issue without redesigning the housing.

Thermal and Lubrication Realities in Small-Bore Needle Rollers

Operating temperatures in compact gearboxes can climb quickly because there is less thermal mass to absorb heat. The polyamide cage in this bearing has an upper continuous temperature limit that is lower than a machined brass or pressed steel alternative, which means application engineers need to verify that steady-state oil temperature at the bearing location stays within the cage material's rated range [NEED_CITE: polyamide cage temperature limits in rolling bearings]. Open-type bearings like this one rely entirely on the housing or shaft seal system to retain lubricant and exclude contamination. If the surrounding seal is compromised, even clean grease will be displaced by fine particulate within a short running period, accelerating roller-end wear.

Reading the Suffixes: TV Cage and XL Designation

The TV suffix on this INA bearing identifies an injection-molded polyamide cage. In the Schaeffler/INA convention, this cage type is selected for applications demanding low noise and low friction at moderate to high speeds — the reduced cage weight means less centrifugal force acting on the cage pockets, which in turn reduces roller skidding during light-load operation. The "without inner ring" design means the needle rollers run directly on the hardened and ground shaft surface; this requires the shaft to meet a minimum surface hardness and finish specification, typically case-hardened to a defined depth and ground to a specific roughness. The XL suffix appears on several INA bearing families and is generally understood to indicate an extended-life or optimized internal geometry series, though its exact engineering definition on this specific needle roller size should be verified against the current manufacturer catalog before finalizing a bulk order.

The Cost of Skipping Cross-Reference Verification

When a maintenance engineer substitutes a needle roller bearing based on the base number alone, ignoring the cage material suffix and internal geometry, the risk is not immediate failure — it is silent, progressive damage. A polyamide cage and a steel cage can share identical roller counts and envelope dimensions, yet respond very differently to the same thermal cycle. Under sustained high-speed, light-load conditions, a steel cage may experience roller skidding and pocket wear that a polyamide cage would resist. When that bearing eventually fails, the damage pattern is often misdiagnosed as a lubrication problem rather than a selection error [NEED_CITE: ISO 15243 rolling bearing damage classification]. The cost is not the bearing itself — it is the unplanned line stoppage, the emergency freight for the replacement, and the overtime labor to reinstall and re-align the assembly.

What Our Sourcing Process Covers Beyond the Part Number

We source INA needle roller bearings through authorized distributor channels, which means every shipment carries distributor invoices traceable back to Schaeffler's regional logistics network. Before we quote, we cross-check the full suffix string — not just the base NK10/16 — against the application parameters you provide, verifying that the cage material, clearance class, and internal geometry align with your operating conditions. If you are replacing a bearing from another brand, our cross-reference comparison covers the cage type and contact surface requirements, not just the dimensional envelope. Country-of-origin documentation is prepared as standard for every export shipment, supporting customs clearance and buyer-side quality audits. Material certificates and dimensional inspection reports can be included with the batch to satisfy incoming inspection requirements at your facility.

Documentation & Authenticity

• Supplier Certificate of Conformity referencing the INA NK10/16-TV-XL batch and lot number for full supply chain traceability
• QR code verification pathway through the Schaeffler/INA official OriginApp, allowing your receiving department to confirm authenticity on the dock before the bearing enters inventory
• Country-of-origin certificate issued by the authorized distributor, formatted to satisfy import documentation requirements in your destination country
• Dimensional inspection report confirming bore, outside diameter, and width against INA specification tolerances prior to dispatch
• HS code and tariff classification support provided with commercial invoice to accelerate customs clearance

Storage, Handling & Mounting

• Retain original INA sealed packaging until the moment of installation; the polyamide cage in the NK10/16-TV-XL is hygroscopic and prolonged exposure to humid warehouse air can affect dimensional stability
• Store flat in a temperature-stable environment away from direct sunlight, as UV exposure degrades polyamide cage material over time even through translucent packaging
• Since this is an open-type bearing without integrated seals, the housing sealing system must be verified before mounting — any contamination pathway will bypass the bearing's internal clearances immediately
• Shaft surface must be case-hardened and ground to the specified roughness before pressing the needle rollers onto it; the without-inner-ring design transfers contact stress directly to the shaft raceway
• Apply the recommended assembly lubricant to the roller set immediately after unsealing; running the polyamide cage dry, even briefly during alignment checks, risks surface scoring that shortens service life

Requesting a Quotation with Full Technical Confirmation

Start with the application parameters, not just the part number.

Share your operating speed, load spectrum, and steady-state temperature so we can confirm the polyamide cage rating is appropriate for your duty cycle. If you are replacing a bearing from another manufacturer, provide the OEM equipment number and the existing bearing's full suffix string — we will run the cross-reference and return a comparison covering cage material, clearance, and shaft surface requirements. Ask for the documentation package and country-of-origin confirmation at the inquiry stage so there are no surprises at shipment.

Frequently Asked Questions

Q: How do I verify that an INA needle roller bearing is genuine before installing it? A: Every INA bearing shipped through authorized channels carries a unique QR code that can be scanned using the Schaeffler OriginApp. The app confirms the part number, production batch, and distribution path. We recommend scanning at the receiving dock before the bearing leaves its original packaging, so any discrepancy is caught before the bearing enters your inventory or reaches the machine.

Q: Can I substitute a steel-cage needle roller bearing where the specification calls for a TV polyamide cage? A: Dimensionally, the substitution is often possible — the envelope and roller count remain the same. However, the steel cage adds rotating mass and changes the friction characteristics under light-load, high-speed conditions, which can lead to roller skidding and premature pocket wear. Always confirm that the substitute cage material is rated for your specific speed and temperature envelope before approving the change.

Q: What shaft surface requirements apply when using a needle roller bearing without an inner ring? A: The shaft must be hardened to a minimum depth and ground to a specified surface roughness to serve as the inner raceway. If the shaft hardness is below specification, the needle rollers will create a Brinell-indentation pattern under load, leading to vibration and spalling that is often misdiagnosed as a material defect in the bearing itself.

Q: What documentation comes with a bulk order of INA NK10/16-TV-XL bearings? A: Each bulk shipment includes a supplier Certificate of Conformity with batch and lot numbers, a country-of-origin certificate, and a dimensional inspection summary. Material certificates and third-party inspection reports can be arranged upon request at the quotation stage.

Q: How far in advance should I place a bulk order for less common needle roller sizes? A: Lead times vary by current stock position at the authorized distributor and the quantity required. We recommend requesting availability and estimated dispatch dates at the inquiry stage, particularly if the order involves non-standard packaging or specific batch traceability requirements for your import documentation.

Request a Technical Cross-Reference and Quotation for the INA NK10/16-TV-XL Send us your application speed, load data, and any OEM equipment numbers. We will return a verified specification match with cage material confirmation, country-of-origin documentation, and a lead-time estimate for your review. Contact us through your existing account channel or submit your inquiry with the parameters above.