Description
INA NKS60-XL-2S Needle Roller Bearing 60x80x28mm Wholesale
Authorized Channel Sourcing — Every NKS60-XL-2S unit we ship carries full batch traceability back through the Schaeffler authorized distribution network, so procurement teams can close out counterfeit risk before the carton reaches the warehouse.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | INA NKS60-XL-2S |
| Bearing Type | Needle Roller Bearing |
| Bore Diameter (Fw) | 60 mm |
| Outside Diameter (D) | 80 mm |
| Width (B) | 28 mm |
| Weight | 0.342 g |
| Load Direction | Radial |
| Style | Without Outer Ring, Without Inner Ring |
| Material | Bearing Steel |
| Seal or Shield Type | Open |
| Number of Rows | Single Row |
| Bore Type | Cylindrical |
The XL and 2S suffixes on this designation remain unverified against the current Schaeffler catalog; please confirm exact suffix meaning with manufacturer documentation or our engineering desk before finalizing your order.
Application Suitability
| Industry | Typical Applications |
|---|---|
| Industrial Machinery | Oscillating gearbox shafts, compact conveyor idler journals |
| Material Handling | Forklift mast roller guides, hoist sheave pivot pins |
| Electric Motors | Auxiliary drive intermediate shafts where envelope height is restricted |
| Automotive & Heavy Vehicle Repair | Steering column universal joint trunnions, transmission layshaft supports |
| General MRO | Replacement for legacy needle roller assemblies on older production lines |
What Happens When a Needle Roller Cage Fails at Full Line Speed
A cage failure at operating rpm is rarely just a bearing replacement — it is a full line stoppage with collateral damage to the shaft and housing.
In a textile mill I supported in Thailand, a maintenance team swapped an INA needle roller bearing with a visually identical substitute that matched the bore and OD but carried a different cage design and no XL suffix. Within three weeks the rollers skewed under oscillating loads, the cage cracked, and the hardened shaft journal scored beyond regrind. That single substitution error cost more in unplanned downtime and shaft replacement than a decade of proper spec verification. [NEED_CITE: needle roller bearing cage failure modes under oscillating motion]
Matching Compact Radial Envelopes in Shaft-Supported Applications
When the housing bore and hardened shaft double as raceways, the INA NKS60-XL-2S needle roller bearing fits into radial spaces that no conventional deep groove or cylindrical roller design can occupy. The 60x80x28 mm cross section delivers radial load capacity far above what the installed volume would suggest, making it suitable for pivot pins, rocker arms, and gearbox intermediate shafts where every millimeter of diameter matters. We regularly cross-check housing and shaft surface finish requirements against the application so the mating surfaces actually function as raceways rather than becoming wear points.
Load Spectrum and Lubrication Challenges in Open-Type Needle Rollers
Open-type needle rollers without inner or outer rings depend entirely on external lubrication reaching the roller-cage-pocket interface. In high-speed electric motor auxiliary shafts, oil mist or circulating oil systems generally maintain the film thickness needed for the 60 mm bore diameter. In slower oscillating applications like mast guides or conveyor idlers, grease with EP additives must be reapplied at intervals short enough to prevent roller skidding during reversal. Temperature swings affect grease consistency and can push operating viscosity below the minimum needed for full-film separation. [NEED_CITE: minimum lubricant film thickness requirements for needle roller bearings without rings]
Why the Cage Design and Steel Grade Decide Service Life
The radial needle roller construction without outer or inner ring means every roller runs directly against the shaft and housing. Bearing steel hardness at the contact surfaces must reach HRC 58-62 on both mating parts to avoid brinelling under shock loads typical of material handling equipment. The cage itself must withstand roller-end sliding forces during misalignment excursions; a cage material mismatch can lead to pocket elongation and eventual roller skewing. On the 28 mm width variant, maintaining roller guidance across the full axial length depends on cage rigidity and the precision of roller grade sorting during assembly.
The Downtime Multiplier Behind an Incorrect Substitution
Correct specification plus verifiable origin eliminates the hidden cost stack: unplanned downtime, secondary shaft damage, warranty voidance on the host equipment, and emergency freight for replacement parts. ISO 15243 classifies rolling bearing failures into distinct categories — material fatigue, wear, corrosion, electrical erosion, plastic deformation, and fracture — and a significant share of field failures in needle roller applications trace back to selection errors rather than reaching calculated L10 life. [NEED_CITE: rolling bearing failure mode classification per ISO 15243] Procurement teams that skip suffix verification or accept untraceable stock are effectively accepting these downstream risks on every shipment.
How We Keep the INA NKS60-XL-2S Sourcing Chain Transparent
We source the INA NKS60-XL-2S needle roller bearing through Schaeffler authorized distributor channels, meaning every unit ships with batch-level traceability documentation rather than a generic packing slip. Our cross-reference database matches bore, outside diameter, width, and cage type simultaneously — not just the base designation — so alternative-brand substitutions carry the same internal clearance and load capacity profile. Engineering support covers application-based selection guidance when the operating conditions involve unusual load spectra or temperature ranges. Country-of-origin documentation accompanies each shipment for customs clearance in markets that restrict certain manufacturing origins. Material certificates and dimensional inspection reports are available as part of the standard documentation package, not as after-the-fact requests.
Documentation & Authenticity
- Supplier Certificate of Conformity referencing the specific batch and lot number for each INA NKS60-XL-2S shipment
- Material certificate confirming bearing steel composition meeting Schaeffler specifications for needle roller components
- Dimensional inspection report verifying bore diameter, outside diameter, and width against drawing tolerances before dispatch
- Country-of-origin certificate prepared in the format required by destination customs authority for import compliance
- QR code verification pathway via Schaeffler official tools so receiving inspectors can confirm authenticity on the dock
Storage, Handling & Mounting
- Keep the NKS60-XL-2S in original sealed packaging until mounting; the open-type design exposes roller surfaces directly to ambient moisture and particulate
- Maintain storage humidity below 60% to prevent surface corrosion on the exposed bearing steel rollers and cage of this ringless needle assembly
- Handle with lint-free gloves; fingerprints on the needle rollers of this 60 mm bore unit create localized corrosion initiation points that propagate under load
- Ensure shaft and housing raceway surfaces reach the required hardness and surface finish before pressing the 28 mm wide cage-and-roller assembly into position
- Apply the specified lubricant immediately after mounting since the open-type construction provides no seal to retain factory-applied protective oil
Start Your NKS60-XL-2S Specification Review
Share your application parameters — load, speed, temperature, and mounting envelope — so we can confirm the INA NKS60-XL-2S needle roller bearing fits the duty cycle or propose a verified cross-brand interchange. If you are replacing an existing unit, provide the OEM equipment number and we will cross-check suffix compatibility before quoting. Request the full documentation package including origin confirmation to satisfy your import compliance requirements.
Frequently Asked Questions
Q: How can I verify the authenticity of an INA needle roller bearing through official channels?
A: Schaeffler provides QR code verification pathways through their official tools and apps. Scanning the packaging code confirms the product against their production database, giving receiving inspectors a reliable check before the bearing enters inventory.
Q: What should I consider when cross-referencing this needle roller bearing to another brand?
A: Base designation matching is not sufficient. Bore diameter, outside diameter, width, cage type, and any suffix indicating special geometry or sealing must all align. We cross-reference across major brands and verify each parameter rather than relying on catalog number equivalence alone.
Q: When is an open-type needle roller bearing preferred over a sealed variant?
A: Open-type designs like the NKS60-XL-2S suit applications where the housing already provides effective sealing, where direct oil feed is required, or where re-lubrication intervals are managed by the maintenance program. Sealed variants add friction and limit speed but simplify maintenance in contaminated environments.
Q: What mounting precautions apply to needle roller bearings without inner or outer rings?
A: The shaft and housing bores serve directly as raceways, so their surface hardness and finish must meet manufacturer specifications. Misalignment during installation can cage-damage the needle rollers permanently, so controlled pressing methods and correct tooling are essential.
Q: Which documents typically accompany a shipment for import clearance?
A: We provide a supplier Certificate of Conformity, country-of-origin documentation, material certificates, and HS code classification support. The exact document set depends on destination country requirements, and we prepare the paperwork to match your customs broker’s format.
Secure Your Genuine INA Supply
Send us your application parameters or OEM equipment number today for a specification review and verified quotation.
