# How to Specify 31594/31520 Without Mixing Nearby Parts

Look-alike part numbers are the usual way a stores ticket goes wrong on a inch tapered roller bearing (cone and cup). Do not substitute a metric taper with a similar inch-looking stamp, or a lone cone without cup 31520. Order the matched cone 31594 and cup 31520. Measure all three inch dimensions before substituting another 315xx set.

The envelope to write on the ticket is 1.375 × 3.000 × 1.1563 in. That geometry belongs to 31594/31520, an inch tapered roller bearing (cone and cup). Measure the removed part or the housing before you trust a faded stamp.

Review 31594/31520 bearing on the TFL Bearing Made-in-China listing. Shandong TFL Bearing Co., Ltd can confirm stock, packing, and any OEM marking once the drawing or sample is attached.