# 31594/31520: 1.375 × 3.000 × 1.1563 in Field Notes
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.
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Typical duty includes inch-series industrial and vehicle positions that call out this cone/cup pair. Material on this listing is chrome steel. If your equipment sits outside that range, say so on the request rather than forcing a familiar part number.
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.
Review 31594/31520 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.