
NSK UCFS311D1 flange bearing 4 holes
- Brand
- NSK
- Category
- Bearing housings
- Subcategory
- Y-bearing unit
- Series
- UCFS
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Other brands for this category
Ask us for alternatives. We check every equivalent against the part number and your application.
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Description
NSK UCFS311D1 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 UCFS311D1 and any equivalents.
The NSK UCFS is a four-bolt flange mounted unit that pairs an insert bearing with a cast iron housing. It supports rotating shafts in power transmission equipment where the mounting face is flat and assembly has to stay simple. MR Industrial Accessories LLC supplies this line to customers throughout the United States and in several Latin American countries.
Reading the code helps you order correctly. UCFS tells you it is a flange unit with four bolt holes and an insert bearing. The number that comes after it sets the bearing size, so codes built on the same base number use one housing for a given shaft diameter. A D1 suffix marks a different construction of the insert. The series is offered in several sizes; send the full code and the quote follows.
Typical service includes conveyors, belts, elevators, mixers, blowers and packaging lines. Plants in food processing, cement, chemicals and agriculture often run these units, and dust or moisture may be present. Because the housing bolts to a flat face, the shaft can be positioned and lined up with the rest of the drive.
When you select a unit, look at three things: shaft diameter, load type and the conditions around the equipment. The insert seal sets how much protection the bearing has against dust and water, and in wet or washdown areas extra protection is worth considering. Most inserts carry permanent lubrication, though demanding duty may call for relubrication. Keeping the housings aligned with each other helps prevent axial loads and supports service life.
NSK UCFS housings interchange with other brands that follow the same mounted unit nomenclature. If you send a code from another maker, or a part you cannot identify, we can point you to a compatible equivalent. Matching is based on the main dimensions and the mounting type rather than on the code itself. Message us on WhatsApp or by email and we will quote the code or size you need.
MR Industrial Accessories LLC supplies the NSK line of insert bearing housings. If the variant you need is not shown, send the code or model on WhatsApp or by email and the team will reply promptly, suggest equivalents and help you choose.
Dimensions
- Bore
- 55 mm
Frequently asked questions
- What does UCFS mean in a bearing housing?
- It identifies a four-bolt flange mounted unit that holds an insert bearing. The letters come from the NSK catalogue series for this housing type. The number after UCFS gives the bearing size, and a D1 suffix indicates a construction variant of the insert.
- How do I choose the right UCFS housing for my application?
- Start with the shaft diameter, the type of load and the environment around the equipment. The insert seal determines the level of protection against dust and water. Alignment between housings matters to avoid axial loads. Send those details and we will quote the exact code.
- Are NSK UCFS housings interchangeable with other brands?
- They interchange with other brands that use the same mounted unit nomenclature. Compatibility rests on the main dimensions and the mounting type. If you have a code from another brand, send it on WhatsApp or by email and we will indicate the compatible alternative.

