NTN 239/1180K spherical roller bearing

NTN 239/1180K belongs to spherical roller bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 239/1180K and any equivalents.

Spherical roller bearings in the NTN K series are self-aligning, two-row components built to carry high radial loads together with axial loads in either direction, and they keep working when the shaft and housing are not perfectly aligned. This makes them a practical choice for heavy equipment where shaft deflection or mounting error is a real condition. MR Industrial Accessories LLC supplies this line to industrial users across the United States and in several Latin American countries.

Reading the designation is the first step. The number identifies the series and the bore size in millimeters, while the K suffix signals a tapered bore with a 1:12 taper. In 239/500K, 239/530K and 239/560K, the bore diameters are 500 mm, 530 mm and 560 mm respectively. That tapered bore is what allows mounting on a tapered shaft or with an adapter sleeve, which simplifies both clearance adjustment and later disassembly.

Typical service is in steel, cement, mining, paper, cranes and heavy transmission work. Large gearboxes, mills, rotary kilns and conveyors are common homes for these bearings. Because they tolerate misalignment, they suit long shafts that deflect under load, a situation where rigid bearing types cannot follow the movement.

Selection should consider radial and axial load, rotation speed and the surrounding environment. In dusty or humid locations, sealing deserves attention, and sealed or shielded configurations may be the better choice. Grease or oil lubrication both apply, and internal clearance has to match the duty. When the bore is tapered, correct tightening of the adapter sleeve is what produces the right residual clearance.

On interchangeability, NTN K series spherical roller bearings correspond to other brands using the same ISO designation, such as SKF, FAG or NSK, as long as dimensions and suffixes agree. For a replacement, confirm the full part number and tolerances. If you are working from another brand's reference, our team can point you to the compatible option.

To request a quote, send the complete part number by WhatsApp or email to MR Industrial Accessories LLC. The team replies promptly and can suggest equivalents or help you choose. If the exact reference is not at hand, send the model or the dimensions instead and we will help you source it.