IRA-10 Inner Rings KOYO / NTN Interchange

IRA-10 Inner Rings is a precision-machined, hardened, and ground component that serve as the inner raceway for needle roller and cage assemblies (K series) or drawn cup needle roller bearings (HK/BK series). They are used when the shaft itself cannot be hardened and ground to the required specifications for direct raceway use.

We can supply both standard K series models and interchangeable replacements compatible with INA, SKF, and IKO.

Below are examples of models we regularly produce and export:

JR20x25x16JS1, JR80x90x54, JR22x26x20, IR-88, IR-475632, JR110x120x30, JR30x35x20,5, JR17x22x23, JR85x100x63, JR40x45x20, IR-364424, JR60x68x25, IR-121616, JR12x15x12,5, IR-2924, IR-101416, JR17x22x26, JR35x40x34, JR10x14x16, JR7x10x16, IR-081216, IR-192420, IR-283624, IR-1212, JR35x44x22, IR-2020, IR-141816, JR100x110x40, JR25x30x32, IR-68-1, JR12x16x20, IR-1416, IR-243220, JR50x58x22, JRZ40x48x23JS1, IR-1516, JR17x20x30,5, JR95x110x63, JR12x16x16, JR70x80x35, IR-162016, IR-1316, JR25x30x38,5, IR-111412, JR20x25x16, JR60x70x60, IRA-6, JRZ15x20x14JS1, JR6x9x16, JR22x28x17, IR-1612, IRA-10, JR50x55x40, JR75x85x30, JR100x115x40, JR15x19x16, IR-364428, JRZ10x14x14JS1, IR-253220, JR65x72x25

Application

Heavy-duty industrial machinery

Construction equipment

Mining machinery

Steel mill equipment

Gearboxes and transmissions

Machine tool spindles

Material handling systems

Packaging

• Industrial packaging
• Neutral packaging
• Customized brand packaging available
• Single box+standard export carton packing+wooden pallet packing for export shipment

Stock & Delivery

We maintain sufficient inventory for common bearing models.

Small trial orders are welcome. Fast shipment is available for urgent orders.

Send Inquiry

We offer OEM manufacturing for non-standard bore sizes, widths, and materials. Please provide your drawing or specifications, and we will respond with a quotation within 24 hours.

Email: sales@needlebearingcn.com