JR45x55x40 Inner Rings SKF Needle Bearing Inner Ring Alternative

JR45x55x40 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 is a selection of typical models from our production:

JR40x48x22, JR6x9x8JS1, IR-475632, IR-121612, JR17x22x23, JR30x35x17, JR85x95x36, JR30x35x30, JR20x25x16JS1, JR20x25x17, JR120x135x45, IR-263220, IR-222820, JR65x72x45, IR-253020, IR-612, JR28x32x17, JR55x63x25, JRZ40x48x23JS1, JR12x16x22, IR-283628, JR70x80x35, JR50x60x40, IR-232816, JR5x8x8JS1, IR-243220, JR65x73x35, JR10x14x16, IR-121616, IR-081216, IR-1812, JR50x58x22, IR-232820, IRA-8, IRA-6, JR65x75x60, IR-222820, IR-131616, IR-324028, JR15x20x16, JR25x29x30, IR-88, JR6x9x12, JRZ8x12x12JS1, JR65x75x30, JR32x40x36, IR-283624, IR-354428, JRZ12x16x14JS1, JR17x22x26, IR-1816, IR-212616, JR150x165x40, JR35x40x17, JR95x105x26, IR-1220, JR50x60x25, IR-364424, IR-212620, JR25x30x32

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