How to Read a Bearing Number: A Practical Guide for Importers
6301-2RS, 30205, UCP205 — what do these numbers actually mean? Understanding bearing codes helps you order the right part and avoid costly mistakes. Available in English, Spanish, and Portuguese.
When you receive a bearing inquiry from a customer, you'll see codes like 6301-2RS, 30205, or UCP205. These are not random — every digit has a meaning. This guide is for importers in Brazil, Colombia, Peru, and across Latin America.
Deep Groove Ball Bearings (6xxx series):
Take 6301-2RS: The '6' means deep groove ball bearing. '3' is the diameter series (medium). '01' is the bore code — multiply by 5 to get bore in mm: 01×5 = 5mm? No — for 00–03, use the table: 00=10mm, 01=12mm, 02=15mm, 03=17mm. So 6301 = 12mm bore. '-2RS' = rubber sealed both sides.
Tapered Roller Bearings (3xxxx series):
30205: '3' = tapered roller. '02' = light series. '05' = bore code 05×5 = 25mm bore. These are common in agricultural equipment and truck wheel hubs — especially in Brazil and Argentina's farming regions.
Pillow Block Bearings (UCPxxx):
UCP205: 'UC' = insert bearing unit. 'P' = pillow block housing. '2' = light series. '05' = 25mm bore. These are used in conveyor systems, grain elevators, and agricultural machinery throughout South America — from Brazilian soybean farms to Colombian coffee processing plants.
Practical tip: When a customer sends you a worn bearing with no number, measure the bore (inner diameter), outer diameter, and width. These three numbers uniquely identify the bearing. Send us the dimensions on WhatsApp (+86 152 6352 1305) and we'll identify the exact model within 2 hours. We respond in Spanish, Portuguese, and English.
This guide is prepared by the FULI Bearing export team using customer RFQs, inspection records, freight workflows, and repeat-order patterns from Latin American bearing buyers.
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Common Buyer Questions
What should I send before asking for a quote?
Send the bearing number, the application, the destination port, your preferred Incoterm, and whether you need neutral or branded packing.
How can I verify the batch before shipment?
Ask for the batch inspection report, material certificate, seal and clearance confirmation, and photos of carton labels before the balance payment is released.
Which routes should I read next after this guide?
Review the related guides above, then compare them with the relevant product category pages so your quote request includes the right models and specifications.
WhatsApp us your bearing list and destination port. We'll send an FOB price within 24 hours. Trial orders from 50 pcs per model.