NTN AW03X lock washer
- Brand
- NTN
- Category
- Bushings and sleeves
- Subcategory
- Lock washer
- Series
- AW
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Description
NTN AW03X belongs to lock washer, part of our Bushings and sleeves range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for AW03X and any equivalents.
A lock washer from NTN's AW series keeps a bearing adjusting nut from backing off under vibration. You fit it between the nut and the bearing, then bend its tab into a groove on the shaft or the nut so the assembly stays locked. This makes it a critical detail in drives, pumps and other industrial machinery where reliability matters. MR Industrial Accessories supplies this series.
Reading the AW code: the letters AW mark the lock washer family, and the number that follows is a size code tied to the nominal shaft diameter or the nut it pairs with. Sizes such as AW/22X, AW00X, AW01X, AW03X and AW04X follow one another in the series; the number is not the shaft diameter itself. The X suffix points to a design variant within the family.
These washers appear in gearboxes, centrifugal pumps, fans, mills, conveyors and mining equipment, as well as in machine tools and automotive work. Their job is to hold the bearing firmly on the shaft: by stopping the adjusting nut from rotating, they preserve the correct preload.
Selection starts with the shaft diameter and the nut type. The tab has to line up with the groove on the shaft or the nut for the lock to work. When fitting, set the washer with the tab toward the groove and bend it firmly with a suitable tool, taking care not to damage the material. Good lubrication and accurate alignment of the assembly help the bearing and washer last.
For equivalents, NTN AW series lock washers can be replaced by other brands that follow the same dimensional standard. Check the bore diameter, outer diameter, thickness and tab type. Send us the original part number or the shaft and nut dimensions, and we will confirm a compatible alternative.
To request NTN AW series lock washers, message us on WhatsApp with the part number or the dimensions you need. Our team replies promptly and can suggest equivalents or help you choose.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What does the lock washer do in a bearing assembly?
- It holds the bearing adjusting nut in place, so vibration cannot loosen it. The tab is bent into a groove on the shaft or the nut, which locks the assembly and keeps the preload.
- How do I pick the right NTN AW series lock washer?
- Check the shaft diameter and the nut type first. The tab must match the groove. If you are unsure, send us the dimensions or the original part number and we will advise you.
- Can NTN AW series lock washers be interchanged with other brands?
- Yes, provided they meet the same dimensional standard. Compare bore diameter, outer diameter, thickness and tab type. For compatibility, consult us with the original part number.