JR40x45x20,5 Needle Roller Bearing Inner Ring KOYO / NTN Interchange

JR40x45x20,5 Needle Roller Bearing Inner Ring 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.

Here are representative models frequently supplied:

IR-222820, JR28x32x30, JR130x145x35, IRA-3, JR12x16x12, JR85x95x30, IR-131616, JR12x16x22, JR70x80x60, IR-222820, JR10x14x12, IR-324028, JR8x12x10JS1, IR-128, JR45x52x22, IR-354428, JR17x21x16, IR-182216, JR100x115x40, IR-121612, JR50x58x40, JR20x25x16, IR-364428, JR42x47x30, IR-314024, JR25x29x30, IR-182220, JRZ40x48x23JS1, JR120x130x30, IR-1516, IR-232820, IR-273216, JRZ30x35x18JS1, JR20x25x26,5, JR15x19x16, IR-2724, JR50x60x25, JR45x50x25,5, JR30x35x20, IR-101412, IR-212620, JR60x68x35, IR-88, JR15x20x23, JR22x28x17, IR-162016, JR40x45x20,5, JR42x47x20, IR-314028, IR-314028, IR-212620, JR90x100x30, IR-141820, JR32x37x30, JR17x22x13, JR25x30x30, IR-242816, IR-202420, JR17x20x30,5, IR-182220

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