# Buyer Checks Before Replacing a Koyo Deep Groove

Ask for steel source, noise grade, and grease type on the alternate.

The Koyo vs TFL page structures the RFQ. For sizing and interchange notes, see Koyo cross notes and the full write-up on TFL Bearing Koyo alternative.

Run a pilot lot on one axle family. Buyers who need OEM-fit replacements can also open Read Koyo vs TFL before they freeze a drawing or RFQ.

Keep notes on fit, grease, and duty cycle with the part number so the next rebuild does not depend on memory alone.

Shandong TFL Bearing Co., Ltd keeps Portuguese product pages aligned with English engineering notes so global plants share one cross-reference language.