LINK-BELT FCU3K55 flange bearing 4 holes
- Brand
- LINK-BELT
- Category
- Bearing housings
- Subcategory
- Bearing housings
- Series
- 300
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Description
LINK-BELT FCU3K55 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 FCU3K55 and any equivalents.
The LINK-BELT FCU 300 is a four-bolt flange bearing housing designed for wall or frame mounting. It supports shafts where the primary load is radial and the unit must sit flat against a surface. MR Industrial Accessories LLC supplies this series to maintenance and purchasing teams across the United States, Canada, Mexico and South America.
The FCU code indicates a four-bolt flange housing. The following number identifies the size group, while the final letters and figures (such as K27, K31, K35, K39, K47 or K55) specify the shaft diameter and locking method. A complete part number covers a ready-to-mount unit that includes the bearing, the housing and the mounting bolts.
Typical applications include conveyors, elevators, mixers, blowers and process lines where the shaft runs perpendicular to the mounting surface. These housings appear in food, cement, paper and aggregate plants, particularly on equipment exposed to dust or moisture that demands a robust, low-maintenance mounting.
When selecting a housing, confirm the shaft diameter, the radial load and its direction. Also review the sealing: single- or double-lip seals offer protection against dust and water depending on the environment. For mounting, the flange must sit flat, the four bolts should be tightened in a cross pattern, and alignment must be checked to prevent stress on the bearing. Lubrication uses consistent grease and should be renewed according to the duty cycle.
Mounted housings come from various brands, each with its own part numbering. For a replacement, compare the shaft diameter, flange bolt hole spacing, flange outside diameter and sealing type. With those details, MR Industrial Accessories LLC can identify a compatible alternative or arrange a custom solution if needed.
To request a quote for an FCU flange housing, send the complete part number via WhatsApp or email. The team responds promptly and can help ensure the unit is properly specified and mounted.
Dimensions
- Bore
- 3 7/16 in
Frequently asked questions
- What does the FCU designation mean on this housing?
- FCU stands for a four-bolt flange housing. The number that follows groups the sizes in the series, and the final letters and figures define the shaft diameter and locking type for each unit.
- How do I choose a replacement for a mounted housing?
- Compare the shaft diameter, the flange bolt hole spacing, the flange outside diameter and the sealing type. With that data, we can suggest a compatible alternative or provide a quote.
- What lubrication does this type of housing use?
- It uses consistent grease, applied with a grease gun until fresh grease appears at the seal. The interval depends on speed, load and environment; in dusty or wet conditions, shorter intervals are recommended.