Description
Traceable INA Procurement — Every INA NAO17X30X13-XL needle roller bearing we ship is backed by authorized distributor invoices and batch-level traceability, ensuring origin and authenticity can be audited before it ever reaches your storeroom.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | INA NAO17X30X13-XL |
| Bearing Type | Needle Roller Bearing with Inner Ring, Machined Rings |
| Bore Diameter (d) | 17 mm |
| Outside Diameter (D) | 30 mm |
| Width (B) | 13 mm |
| Weight | 0.043 kg |
| Cage Material | Steel (Machined Rings, Open Type) |
| Seal or Shield Type | Open |
| Ring Configuration | With Inner Ring, Without Outer Ring |
| Load Direction | Radial |
| Material | Bearing Steel |
| Standards | DIN 617 / ISO 1206 |
| Origin | Manufacturer production facilities (documented upon request) |
The suffix XL is listed in supplier content but its exact meaning should be confirmed against the INA catalog before final engineering sign-off.
Application Suitability
| Industry | Typical Applications |
|---|---|
| Automotive & Heavy Vehicle Repair | Steering column intermediate shafts, gear selector linkages |
| Industrial Machinery | Textile machine spindle supports, printing press roller guides |
| Agricultural Machinery | Combine harvester linkage pivots, seed drill metering shafts |
| Material Handling | Conveyor guide roller journals, lift truck mast chain sheaves |
What Happens When a Needle Bearing Inner Ring Is Wrongly Specified
The base number alone never guarantees interchangeability — suffix-level detail determines whether the bearing survives first startup or scores the shaft within a fortnight.
A textile mill replacement order for NAO-series needle rollers matched the bore and OD perfectly but arrived without the specified inner ring. The needles ran directly on an unhardened shaft surface. Within three weeks the shaft was gouged, the spindle seized, and the line was down for a full shift. Cross-reference errors like this are far more common than outright counterfeits, and they cost just as much in unplanned downtime [NEED_CITE: cross-reference mismatch as a leading cause of premature bearing failure in industrial maintenance]. The INA NAO17X30X13-XL needle roller bearing with inner ring eliminates that risk by providing a matched, hardened raceway surface separate from the shaft.
Matching the NAO17X30X13-XL to Compact Radial Applications
The INA NAO17X30X13-XL needle roller bearing with inner ring is dimensioned for assemblies where radial space is constrained to a 17 mm bore envelope yet the shaft cannot be hardened and ground to serve as a raceway. The separate inner ring slips onto the shaft with an interference fit, providing a dedicated rolling surface while the outer needle-and-cage assembly seats into the housing bore. This split arrangement lets maintenance teams replace only the worn half during overhaul rather than scrapping the entire shaft — a practical saving on gearboxes and linkage pivots that see cyclic radial loads. Our sourcing desk routinely cross-checks the INA designation against NSK and IKO equivalents, matching not just the 17×30×13 envelope but also the cage type and inner ring hardness to avoid field surprises.
Radial Load, Speed, and Lubrication Realities in the Field
Needle roller bearings in this size class typically operate under moderate radial loads at rotational speeds that keep cage stress low, but contamination and lubrication starvation remain the dominant failure drivers. Open-type construction means the housing must supply adequate sealing — lip seals or labyrinth rings in the surrounding casting keep dust and moisture out while allowing periodic grease purging. In agricultural linkage pivots, for example, the bearing sees oscillating motion rather than continuous rotation, which concentrates load on a small arc of needles and accelerates false brinelling if the grease film breaks down. Temperature swings in outdoor equipment also affect grease consistency, so specifying a grease with a wide operating range and planning re-lubrication intervals around seasonal overhauls keeps the INA NAO17X30X13-XL needle roller bearing performing reliably [NEED_CITE: oscillating motion and false brinelling in needle roller bearings].
Dissecting the Key Engineering Features
The machined ring construction of this NAO series bearing sets it apart from drawn-cup needle rollers. Machined rings are ground from solid bearing steel stock, giving tighter dimensional control over wall thickness and roundness compared to thin-walled stamped alternatives. That precision matters when the outer ring must seat in a housing bore with an H7 tolerance — any ovality translates directly into uneven load sharing among needles and localized fatigue. The inner ring is through-hardened and ground to provide a raceway surface finish suitable for direct needle contact, which is essential when the mating shaft is made of case-hardened or plain carbon steel that lacks the required HRC 58–62 surface hardness. Open construction without integral seals or shields keeps friction minimal but places the sealing responsibility squarely on the housing design. For applications where contamination is unavoidable, external seals must be specified by the equipment OEM or the maintenance engineer during retrofit planning. The 13 mm width provides a needle length-to-diameter ratio that balances load capacity against the risk of needle skew under moment loads — a geometry consideration that becomes critical in linkages with slight misalignment.
The Hidden Cost of Ignoring the Inner Ring
When procurement teams match only the base number and accept a substitute without an inner ring, the needles bear directly on the shaft. If that shaft is softer than the required raceway hardness, the needles embed into the surface, creating grooves that accelerate wear and generate metallic debris that contaminates the grease. ISO 15243 classifies this failure mode as surface distress leading to smearing — and it typically shows up within the first few hundred operating hours, long before the bearing’s calculated L10 life would predict any fatigue [NEED_CITE: ISO 15243 failure classification for surface distress in rolling bearings]. The result is not just a bearing replacement but a shaft regrind or full shaft swap, multiplied by the labor hours to disassemble the surrounding assembly. Sourcing a verified INA NAO17X30X13-XL needle roller bearing with its matched inner ring from authorized channels avoids this cascade entirely.
Why Industrial Buyers Source This Bearing Through Our Desk
We procure every INA NAO17X30X13-XL through authorized distributor channels, which means the invoice trail traces back to the manufacturer’s regional warehouse — not an unverified broker pool. Our cross-reference database stores not just the base designation but also cage type, inner ring inclusion, and clearance class so that when a purchasing manager in West Africa sends an OEM equipment number, we confirm full interchangeability before quoting. Batch and lot numbers are recorded at the point of receipt and follow the shipment to the destination port, giving import documentation officers a clear chain of custody. We also supply dimensional inspection reports on request, so maintenance engineers can verify bore and OD tolerances against their housing drawings before pressing the bearing into service. For buyers in regions where counterfeit bearings with soft inner rings and cloned QR codes are a known risk, our authenticity verification guidance walks receiving inspectors through the INA official app check before the box is opened [NEED_CITE: counterfeit bearing detection using manufacturer QR verification apps].
Documentation & Authenticity
- Supplier Certificate of Conformity referencing the INA NAO17X30X13-XL batch and lot number, linked to the authorized distributor invoice
- Third-party dimensional inspection report confirming bore, OD, and width tolerances per ISO 1206 before dispatch
- INA official app QR code verification pathway documented so your receiving team can scan and confirm authenticity on arrival
- Country-of-origin certificate suitable for customs clearance in Middle East, African, and Latin American import jurisdictions
- Material certificate confirming bearing steel grade for the machined inner and outer rings
- HS code classification and packing list formatted for consolidated container shipments
Storage, Handling & Mounting
- Retain the INA factory packaging until the moment of mounting; the anti-corrosion coating on the machined inner ring surface degrades once exposed to humid warehouse air for extended periods
- Store the NAO17X30X13-XL flat in a dry environment below 60% relative humidity — the 0.043 kg mass is small enough that stacking heavy items on top can deform the open cage
- Handle with lint-free gloves; fingerprint acids on the ground inner ring raceway initiate corrosion pits that propagate under cyclic radial load
- Press the inner ring onto the shaft using a tubular drift that contacts only the inner ring face — never transmit mounting force through the needle cage
- Apply the specified grease to the needle cage and housing bore immediately before assembly; the open design provides no factory-fill lubrication
- Verify housing bore roundness and surface finish before seating the outer assembly — the machined outer ring requires a clean, burr-free bore to distribute radial load evenly across all needles
How to Start Your Inquiry
Share the OEM equipment number or the application parameters — shaft speed, radial load, operating temperature, and housing bore tolerance — so our technical team can confirm the INA NAO17X30X13-XL needle roller bearing is the correct match and cross-check against alternative brands if lead time is tight. Request the documentation package and origin confirmation at the quotation stage so your import team has everything needed before the shipment leaves. We will confirm batch availability, lead time, and minimum order quantity in the return quote.
Frequently Asked Questions
Q: How do I confirm the INA NAO17X30X13-XL is genuine after delivery?
A: Each bearing carries a QR code that links to the INA official verification app. Scan the code before opening the inner packaging — the app returns batch and production data that should match the Certificate of Conformity supplied with your shipment. If the QR fails to scan or returns mismatched data, do not install and contact us immediately for replacement guidance.
Q: When should I specify a needle roller bearing with an inner ring versus without?
A: Specify the inner ring version, like the NAO17X30X13, when the shaft material cannot be hardened and ground to HRC 58–62 with a surface finish suitable for direct needle contact. The separate inner ring provides the required raceway hardness and geometry. If the shaft is already hardened and precision-ground, a cage-and-needle assembly without an inner ring saves space and weight.
Q: What cross-reference points should I check when substituting this bearing with another brand?
A: Match the bore (17 mm), OD (30 mm), width (13 mm), and confirm the substitute includes a matched inner ring with equivalent hardness. Also verify cage type — machined versus stamped — and whether the outer ring is present or absent. A mismatch on any of these points can alter load distribution or cause shaft damage.
Q: Can I use this open-type needle bearing in a dusty environment without additional seals?
A: No. The open construction relies on the housing to provide contamination exclusion. In dusty or wet conditions, the housing must incorporate lip seals, labyrinth rings, or other external sealing elements. Running the bearing open in contaminated conditions will rapidly degrade the grease and accelerate needle and raceway wear.
Ready to Confirm Fit and Availability?
Send us your OEM part number or application details and we will return a verified cross-reference, documentation package outline, and quotation for the INA NAO17X30X13-XL within one business day.
