6909 bearing: 45 × 68 × 12 mm

A 6909 is a deep groove ball bearing, 45 mm bore, 68 mm outside diameter, 12 mm wide. Variants: 6909-2RS (rubber sealed), 6909-ZZ (metal shields), 6909 open.

Bore	45 mm
Outside diameter (OD)	68 mm
Width	12 mm

Sizes from maker catalogues. No sourced load ratings for this one yet, so none are shown.

Open 6909 in Benchsmith Add to order list

What the number means

`6`	Deep groove ball bearing
`9`	Thin section series, a little heavier
`09`	Bore 09 × 5 = 45 mm

Ask for

6909-2RS: rubber sealed both sides. Other brands: SKF 6909-2RSH, FAG 6909-2RSR, NSK 6909DDU, NTN 6909LLU, Koyo 6909-2RS.
6909-ZZ: metal shields both sides. Other brands: SKF 6909-2Z, FAG 6909-2ZR, NSK 6909ZZ, NTN 6909ZZ, Koyo 6909ZZ.
6909: open, no seals or shields.

Add C3 for electric motors and anything that runs hot.

Same bore, different size

680945 × 58 × 7
600945 × 75 × 16
620945 × 85 × 19
630945 × 100 × 25

One size up or down

690840 × 62 × 12 (down)
691050 × 72 × 12 (up)

Every bearing 45 × 68 × 12 mm: 45 × 68 × 12 mm bearings. Measured a bearing with no number on it? Type the bore, OD and width into Benchsmith → Find → Bearing.