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Link-Belt 4-bolt flange mounted bearing · LINK-BELT FU320
LINK-BELT FU320 flange bearing 4 holes

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LINK-BELT FU320 flange bearing 4 holes

Manufacturer part numberFU320
Subcategory
Bearing housings
Series
300
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Description

LINK-BELT FU320 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 FU320 and any equivalents.

LINK-BELT 4-bolt flange housings are mounted bearing units that pair an insert bearing with a circular flange housing. They hold a shaft at a right angle to the mounting surface and anchor it at four points, which suits walls, frames and structural steel. MR Industrial Accessories supplies this line to maintenance and purchasing teams across the United States and Latin America.

The FU prefix plus a three-digit number defines the unit's size and layout. Codes such as FU314, FU315 and FU316 step up through the series, but the digits are not the shaft size in millimeters or inches. They point to a standardized dimension table. Letters or numbers after the main code can signal seal type, how the insert locks to the shaft, or the housing material. The practical way to pick a code is to start with the shaft diameter you need and then check the table.

You will find these units on belt conveyors, bucket elevators, mixers, agitators, centrifugal pumps and industrial fans. Plants handling food, chemicals and aggregates use the 4-bolt pattern to mount a shaft directly to structural steel, so no machined housing is required. Washing equipment, dryers, and wood and cement industry machinery also rely on them, where the housing's strength and the ease of swapping the insert help cut downtime.

Selection comes down to three checks: shaft diameter, the radial and axial loads you expect, and the seal type for the environment—dust, moisture or pressure washing. The mounting surface must be flat and square to the shaft. If it is not, the insert runs misaligned and its life drops. Insert bearings in this family are often lubricated for life, but in severe duty you should add a grease point. Set screws or a taper bushing secure the insert to the shaft, depending on the model.

LINK-BELT is a well-known name in this product family, and its flange housings often interchange with other brands that use the same three-digit code. That compatibility is not universal. Before you replace a unit, compare shaft diameter, the distance between flange holes and the insert type. MR Industrial Accessories can confirm the compatible alternative. Interchange is common here, but always validate the critical dimensions.

To get a quote on a 4-bolt flange housing, send the code or the shaft diameter to MR Industrial Accessories by WhatsApp or email. We reply promptly and can suggest an equivalent or discuss special manufacturing. Our team knows how these housings perform in industrial settings and will help you sort out the replacement.

Dimensions

Bore
1 1/4 in

Frequently asked questions

How do I pick the right FU code for my shaft?
The FU code is not the shaft diameter; it refers to a dimension table. Send us the shaft diameter and the distance between flange holes, and we will identify the exact code.
Can LINK-BELT housings replace other brands?
Often yes, since many brands share the same three-digit nomenclature. But it is not automatic—compare shaft diameter, hole spacing and insert type. We can help you verify those dimensions before quoting.
What sealing works for dust or moisture?
For coarse dust or water spray, a reinforced seal such as a labyrinth or double-lip design is advisable. In very severe conditions, add a grease point. Tell us the working conditions and we will guide you.
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