JR45x50x25 Inner Rings China Manufacturer

JR45x50x25 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.

Here are representative models frequently supplied:

JR12x16x12, JR14x17x17, JR75x85x25, JRZ10x14x14JS1, JR30x35x20,5, IR-222820, IR-68-1, IR-314028, JR38x43x20, JR20x25x20,5, IR-162020, JR20x24x16, JRZ6x10x12JS1, JR40x45x20, JR40x45x17, JR12x16x20, JR65x73x35, IR-612-1, JR55x60x25, IR-2324, IR-2824, IR-242816, IR-253020, JR17x20x30,5, IR-1916, IR-111412, IR-283628, JR85x100x35, IR-242820, JRZ30x35x18JS1, JR17x22x26, JR22x28x17, IR-384828, IR-404824, JR65x75x28, JR95x110x35, JR85x95x36, IR-2016, JR9x12x16, JR5x8x12, IR-314028, IR-232816, JR12x15x22,5, IR-222820, IR-253220, JR120x135x45, IR-121612, JR80x90x35, JR70x80x25, IR-612, IR-121616, JR70x80x54, JR55x63x45, JR45x55x40, JR45x55x20JS1, JR85x100x63, JR12x16x12JS1, JR35x40x34, JRZ30x35x20JS1, IR-445232

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