25,000 mm x 38,000 mm x 40,000 mm NTN NK29/20RD2+IR25X29X20D2 needle roller bearings

We NTN Driveshaft CORP. Provide Extensive 120 °C Max operating temperature, Tmax 25,000 mm x 38,000 mm x 40,000 mm NTN NK29/20RD2+IR25X29X20D2 needle roller bearings 25,000 mm x 38,000 mm x 40,000 mm Selection And Competitive Wholesale Pricing.

What is NK29/20RD2+IR25X29X20D2 bearing interchange？