4T-A4138 - NTN Single Row Taper Roller Bearing

---

4T-A4138 bearing reference breakdown

Below we will break down the 4T-A4138 bearing reference and provide an explanation for each section provided it can actually be broken down. We can split it into 3 parts the prefix, suffix and body of the item code.

The prefix can be found at the beginning of the bearing code:

Prefix

4T - The 4T- prefix designates a tapered roller bearing that is made of a special grade of case-hardened bearing steel and is interchangeable with other manufacturers taper with the same part number.

The suffix can be found at the end of the bearing number:

Suffix

A - Denotes an internal design change (for inch items only)