NSK FWJ-202617 needle roller cage
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Needle roller cages and components
- Series
- FWJ
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Description
NSK FWJ-202617 belongs to needle roller cage, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for FWJ-202617 and any equivalents.
The NSK FWJ series is a needle cage: the cage that holds the needle rollers apart and keeps them aligned inside a needle roller bearing. By spacing the needles, it spreads the load evenly and stops metal-to-metal contact between them, which cuts friction and wear. This makes the series a fit for tight radial envelopes that still have to carry heavy loads, such as transmissions, pumps and general industrial machinery. MR Industrial Accessories supplies this series.
Reading the code is straightforward. Each reference starts with FWJ, followed by a hyphen and a three-part number block that maps to the cage dimensions in millimeters. Take FWJ-172113: bore 17 mm, outside diameter 21 mm, width 13 mm. FWJ-182417 follows the same logic: bore 18 mm, outside diameter 24 mm, width 17 mm. With those three figures you can match a cage to a given seat without guessing.
These cages turn up in automotive work, metalworking, food processing and farm equipment, and inside gearboxes, hydraulic pumps, compressors, electric motors and transmission assemblies. The low cross-section suits places where radial room is scarce but the bearing still has to take high radial load at moderate speed. Maintenance departments keep them on hand for rebuilds and replacements.
Choosing the correct reference means checking the bore, outside diameter and width of the seat, plus the quantity and size of the needles the cage will carry. At installation, alignment and proper lubrication matter: the cage should sit with no excess play while the needles still turn freely. Get those points right and you limit vibration and premature wear.
Cages from other makers that use the same dimensional nomenclature can serve as equivalents when the dimensions and needle type line up. Confirm the match against the original part number before ordering. If you only have measurements, that works too, and the team can point you to the right reference.
To get a quote, send the part number or the dimensions by WhatsApp or email. The team answers quickly, can suggest equivalents and will help you pick the cage that fits your application.
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 do the numbers in the FWJ code tell me?
- They give the cage dimensions in millimeters, read in order as bore, outside diameter and width. FWJ-172113, for instance, is 17 mm bore, 21 mm outside diameter and 13 mm width.
- Which data do you need to identify my cage?
- Send the bore, outside diameter and width of the seat, along with the needle size and count. If you have the original bearing part number, that is even faster and we can confirm the equivalent reference.
- Can another brand's cage replace an NSK FWJ cage?
- Often yes, provided the dimensions and needle type are the same, since several makers use comparable nomenclatures. Share the part number or measurements and we will check compatibility for you.