
NSK JELFD205-100W3 flange bearing 4 holes
- Brand
- NSK
- Category
- Bearing housings
- Subcategory
- Y-bearing unit
- Series
- JELFD
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Description
NSK JELFD205-100W3 belongs to flange bearing 4 holes, part of our Bearing housings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for JELFD205-100W3 and any equivalents.
The NSK JELFD series is a four-bolt flange bearing unit with an insert bearing already seated in the housing. It bolts flat to a surface, so it supports a shaft without any machining of the frame. MR Industrial Accessories supplies this line to maintenance and purchasing teams in the United States and Latin America.
Reading the code helps you order the right unit. The JELFD letters mark the family: four-bolt flange housing with insert bearing. What follows tells you the shaft size and the locking style. Take JELFD201-008W3: the 008 after the hyphen is an inch shaft of 8/16 inch. JELFD201W3, with no hyphen, is a 12 mm metric shaft. The W3 ending means a triple-lip seal, a barrier against contaminants.
These units show up on conveyors, belts, elevators, mixers and process lines in food, chemical and materials plants. The four-bolt flange lets you mount directly to sheet metal or structural steel, which is why they are common in mills, packaging lines, fans, pumps and agricultural machinery. When a support fails, the whole unit is easy to swap out.
Selection comes down to three things: shaft diameter, metric or inch locking, and the seal the environment calls for. For dusty or moderately humid areas, the W3 triple-lip seal is the usual pick. At assembly, keep the mounting face clean and flat, then tighten the four bolts evenly so the housing does not distort. Insert bearings in these units are generally lubricated for life, but under severe conditions it pays to inspect the seal.
Mounted units interchange between manufacturers when the series, shaft diameter and locking type match. If you have a code from another brand, send it over and we will quote it and point you to a compatible equivalent.
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 W3 suffix mean in JELFD units?
- It means the insert bearing has a triple-lip seal, which gives more protection against dust and splashes than a standard seal. It suits moderately contaminated environments.
- How do I tell a metric unit from an inch unit?
- Codes with a hyphen are inch sizes; codes without one are metric. If you are not sure, send us the shaft size and we will quote the exact part number.
- Can I replace a unit from another brand with an NSK JELFD?
- Yes, if the mounting dimensions and shaft diameter match. Send us the original part number and we will confirm the compatible equivalent and quote it.

