6311DDU NSK Rubber Sealed Deep Groove Ball Bearing 55x120x29mm

6311DDU is a dimensional interchange for FAG 6311-2RSR, Koyo 6311-2RS, NTN 6311LLU, SKF 6311-2RS1. Interchanges are matched on standardized dimensions and published manufacturer interchange data — confirm seal, clearance, and material suffixes with our order desk before ordering.

6311DDU is listed at CA$154.39 (CAD) and can be ordered directly from this page with Add to Cart. That figure is a reference price and can change: your card is authorized at checkout and charged only once our order desk confirms the part, stock, and final price, and we email you first if anything has moved. Larger quantities or custom terms — email orderdesk@kkmsolutions.com for a volume quote.

6311DDU is made by NSK and is listed in our Ball Bearings category. KKM Solutions is an independent distributor, not an authorized NSK dealer: we source the exact NSK part number 6311DDU, and the quote confirms condition and lead time before you order.

Parts we supply are new and genuine unless the quote expressly states otherwise. Where a part is new-old-stock, from excess inventory, refurbished or open-box, the quote says so before you approve it.

Parts we supply are warranted against manufacturing defects for 1 year from the date of delivery; where the manufacturer's own warranty is longer, the manufacturer's warranty applies. The warranty covers repair, replacement, or credit of the defective part and does not cover normal wear items, misapplication, improper installation, or consequential damages. Contact us within 30 days of delivery before returning anything — all returns need a return authorization from the order desk.

No published lifecycle status is on file for 6311DDU. NSK lists whether a catalog number is current, superseded or end-of-life on its own product page, and our order desk confirms the status with the manufacturer at quote time, before you commit. Send the part number through the quote form on this page.

Key specifications include Bearing width (mm): 29mm; Bore Size: 55mm; Dimensions: 55x120x29mm; Outer Diameter: 120mm. The full specification table on this page lists every published attribute for this part.

The listed dimensions for 6311DDU are 55 × 120 × 29 mm. Rolling bearings are dimensioned bore (d) × outside diameter (D) × width (B), so 6311DDU has bore 55 mm, outside diameter 120 mm and width 29 mm. Confirm against the manufacturer drawing, or ask our order desk at quote time.

Lead time for 6311DDU is quoted per order and confirmed on your quote, which our order desk sends within 1 business day. For a line-down emergency, call the 24/7 order desk at (825) 454-5367.