UCF BEARINGS WITH 4-HOLE SQUARE FLANGE, CAST IRON – 200 Series

UCF Series 200 Bearings with 4-Hole Square Flange, Cast Iron

TheUCF Series 200 Bearings are complete bearing assemblies designed to support rotating shafts on agricultural machinery, conveyors, material-handling equipment, and numerous industrial facilities.

Each level combines asquare cast-iron housing with four mounting holes and aUC self-aligning insert bearing. This design creates a compact, sturdy, and easy-to-install unit.

Camagris offers an extensive range ofUCF204 to UCF215, covering trees ranging from 20 to 75 mm.

Products in this category are sold under the brand nameCredits.

What is a UCF bearing ?

UCF refers to a complete bearing assembly consisting of a square housing with four mounting holes and a UC series insert bearing.

The bearing has a spherical outer ring that fits into a corresponding seat in the cast iron housing. This design allows the bearing to rotate slightly and compensate for minor static misalignment between the shaft and the machine.

The inner ring is wider than that of a standard ball bearing and features two set screws that allow the bearing to be secured directly to the shaft.

The bearing is therefore delivered ready for installation: the housing and the bearing are already assembled.

What are the components of a UCF Series 200 bearing ?

A UCF bearing assembly consists of a square cast-iron housing, four mounting holes, a UC insert bearing, a spherical outer ring, a wide inner ring, two set screws, protective seals, and a device for relubrication, depending on the model.

The cast-iron housing ensures the rigidity of the assembly. The four mounting points distribute the forces across the mounting surface and are particularly well-suited for mounting on walls or frames perpendicular to the shaft.

UCF204 to UCF215 series, depending on the shaft diameter

The part number allows you to quickly identify the nominal shaft diameter.

UCF204: shaft Ø20 mm – housing approx. 86 mm – center-to-center distance 64 mm

UCF205: shaft Ø25 mm – housing approx. 95 mm – center-to-center distance 70 mm

UCF206: shaft Ø30 mm – housing approx. 108 mm – center-to-center distance 83 mm

UCF207: shaft Ø35 mm – housing approx. 117 mm – center-to-center distance 92 mm

UCF208: shaft Ø40 mm – housing approx. 130 mm – center-to-center distance 102 mm

UCF209: shaft Ø45 mm – housing approx. 137 mm – center-to-center distance 105 mm

UCF210: shaft Ø50 mm – housing approx. 143 mm – center-to-center distance 111 mm

UCF211: shaft Ø55 mm – housing approx. 162 to 163 mm – center-to-center distance 130 mm

UCF212: shaft Ø60 mm – housing length approx. 175 mm – center-to-center distance 143 mm

UCF213: shaft Ø65 mm – housing approx. 187 mm – center-to-center distance 149 mm

UCF214: shaft Ø70 mm – housing approx. 193 mm – center-to-center distance 152 mm

UCF215: shaft Ø75 mm – housing approx. 200 mm – center-to-center distance 159 mm

The dimensions correspond to the standard values for the UCF200 series. There may be slight differences depending on the manufacturer; therefore, it is advisable to compare all dimensions before replacing the part.

The NTN-SNR tables confirm this increase in size from UCF204 to UCF215.

How to Choose the Right UCF Bearing ?

Check the shaft diameter

This is the first selection criterion.

For codes starting with 04, the metric nominal diameter is generally calculated by multiplying the last two digits of the part number by five.

For example, UCF205 corresponds to 25 mm, UCF207 to 35 mm, UCF210 to 50 mm, and UCF215 to 75 mm.

This naming convention is used for the U series of bearings.

Measure the center-to-center distance between the four holes

The shaft diameter alone is not sufficient to correctly identify a bearing.

Measure the center-to-center distance between the mounting holes both horizontally and vertically.

For example, a UCF205 typically has a center-to-center distance of 70 mm, while a UCF207 has a center-to-center distance of 92 mm and a UCF210 has a center-to-center distance of 111 mm.

Check the exterior dimensions of the housing

Also measure the width and height of the square body.

This check is particularly important when the bearing is installed in a confined space or in close proximity to other components.

Check the diameter of the holes

The diameter of the four holes increases gradually with the size of the bearing.

It must be compatible with the existing fasteners and drill holes.

Check the width of the bearing

When pulleys, sprockets, hubs, or other components are located in close proximity to the bearing, also check the total width of the inner ring.

The UC bearing mounted in a UCF housing

The core of the bearing assembly is a UC-series insert bearing.

An UCF204 normally pairs with an UC204, an UCF205 with an UC205, an UCF206 with an UC206, and so on up to the UCF215, which pairs with an UC215.

The UC bearing has a wide inner ring and two set screws.

This mounting allows the bearing to be secured directly to a cylindrical shaft without the need for a tapered sleeve.

When the cast-iron housing is still in good condition, it is usually possible to replace just the bearing insert.

However, its dimensions and geometry must be carefully checked before replacement.

Comparisons Between Major Brands

The UCF nomenclature is used by many manufacturers.

In particular, we find the following references:UCF204 through UCF215 from NTN, SNR, NSK, FYH, Koyo, FAG/Schaeffler, and numerous generic bearing manufacturers.

At NTN, relubricable versions may include the suffixD1, for example, UCF205D1.

At Schaeffler / FAG, the series includes, in particular, theUCF…-Day 7 depending on the dimensions.

At SKF, the part numbering system is different. The four-hole square assemblies in this broad product family use the designationFY…TF.

For example, some of the family correspondence that people commonly search for includes:

UCF204 → SKF FY 20 TF

UCF205 → SKF FY 25 TF

UCF206 → SKF FY 30 TF

UCF207 → SKF FY 35 TF

UCF208 → SKF FY 40 TF

UCF209 → SKF FY 45 TF

UCF210 → SKF FY 50 TF

These references should be considered asfamily correspondence. Before replacing the bearing, check the housing dimensions, the bearing width, the mounting holes, the seals, and the lubrication system.

What is the difference between UCF and UCP ?

TheUCF has a square housing with four mounting holes. It is primarily used when a shaft passes through a wall or structure perpendicular to its axis.

TheUCP has a base plate with two mounting holes and is mounted on a surface parallel to the shaft.

Both can use the same UC insert bearing.

For example, the UCF205 and UCP205 are both designed for a 25-mm shaft and typically use a UC205 insert, but their housings are completely different.

What is the difference between UCF and UCFL ?

TheUCF has a square flange with four holes.

TheUCFL has a compact oval flange with two holes.

They generally use the same UC needle roller bearing design.

An UCF207 and an UCFL207 can both accommodate a 35-mm shaft but are not mounted on the machine in the same way.

What is the difference between UCF and UCFC ?

The UCF has a square flange with four mounting holes.

The UCFC has a round housing that is also secured by four bolts.

The insert may belong to the same UC family, but the geometry and dimensions of the housing differ.

What is the difference between the UCF 200 Series and the UCF 300 Series ?

This distinction is important.

The seriesUCF200 is the most common standard range.

The seriesUCF300 This design is heavier and more bulky, making it suitable for applications that require a higher load capacity.

An UCF205 and an UCF305 both have a 25-mm bore, but they are by no means identical.

Similarly, both the UCF208 and the UCF308 fit a 40-mm shaft, but the UCF308 is much larger.

Therefore, you should always check the entire set, not just the shaft diameter.

Agricultural Applications of UCF Bearings

UCF square bearings are widely used in agricultural equipment and material-handling systems.

They are found, in particular, on belt conveyors, chain conveyors, grain augers, screw conveyors, bucket elevators, balers, mixers, dispensers, manure or fertilizer spreaders, combine harvesters, forage harvesters, fans, turbines, hoppers, storage equipment, and intermediate drive shafts.

Manufacturers of agricultural bearings explicitly include four-bolt UCF units in their product lines designed for agricultural machinery. PFI ranks them among its leading agricultural solutions, along with UCPs and insert bearings.

Why are UCF bearings so widely used ?

Easy assembly

The bearing is supplied as a complete unit and can be installed directly onto a cylindrical shaft.

Four-point rigid mounting

The square bracket ensures that forces are distributed evenly across the structure.

Auto-alignment

The spherical surface of the bearing compensates for slight static misalignment.

Wide selection of sizes

The UCF200 series covers a very wide range of shaft diameters.

Replaceable bearing

It is generally possible to replace only the UC insert when the housing is still usable.

Relubrication

Standard versions are generally equipped with a grease fitting to allow maintenance to be adjusted to operating conditions.

Waterproofing and Agricultural Applications

Agricultural machinery frequently exposes bearings to dust, dirt, straw, moisture, mud, or plant debris.

Sealing, therefore, plays an important role in the bearing's service life.

Standard versions are suitable for many applications, but manufacturers also offer reinforced systems, such as the L3, L4, or AGR triple-lip seals, for highly contaminated environments.

However, increased sealing results in greater friction and may reduce the permissible speed. It must therefore be selected based on the actual application.

Installing a UCF Bearing

Before installation, clean the shaft and the mounting surface.

Position the bearing on the shaft, then insert the four bolts without tightening them all the way.

If the shaft is supported by multiple bearings, align the entire assembly first.

Rotate the shaft by hand to verify that there is no stress.

Gradually tighten the four fasteners, then the two set screws on the inner ring.

Avoid striking the bearing or the seals directly.

Lubrication and Maintenance

The frequency of relubrication depends on the rotational speed, load, temperature, contamination level, and number of operating hours.

In dusty or damp agricultural environments, the bearing must be inspected regularly.

In particular, check for abnormal play, unusual noises, overheating, grease leaks, or loose fasteners.

Excess grease can also cause the bearing to overheat. It is therefore important to follow the machine manufacturer's recommendations.

Frequently Asked Questions About UCF Bearings

What does UCF205 mean ?

UC refers to a bearing insert with a wide inner ring and needle rollers.

"F" refers to the four-hole square-flange housing.

205 corresponds to a 25-mm shaft.

Which UCF should I choose for a 20-mm shaft ?

The corresponding reference isUCF204.

Which UCF should I choose for a 25 mm tree ?

Choose aUCF205, with a housing depth of approximately 95 mm and a mounting center-to-center distance of 70 mm.

Which UCF should I choose for a 30-mm shaft ?

The corresponding reference isUCF206.

Which UCF should I choose for a 35-mm tree ?

Choose aUCF207, with a standard center-to-center distance of 92 mm.

Which UCF should I choose for a 40-mm shaft ?

The corresponding reference isUCF208.

Which UCF should I choose for a 50-mm shaft ?

The reference isUCF210.

Which UCF should I choose for a 60-mm tree ?

The corresponding reference isUCF212.

Which UCF should I choose for a 70-mm shaft ?

Choose aUCF214.

Which UCF should I choose for a 75-mm tree ?

The reference isUCF215.

Is the bearing included with the housing ?

Yes. A complete UCF bearing assembly comes with its housing and UC insert bearing.

How is the bearing attached to the shaft ?

The large inner ring has two set screws that are tightened directly against the shaft.

Can you replace just the bearing ?

Yes, as long as the cast-iron body is in good condition. You must use a UC insert that is compatible with the size and dimensions of the housing.

Are UCF205 and UCF305 interchangeable ?

No. Both are compatible with a 25-mm shaft but belong to two different size series. The UCF305 is much more robust and bulkier.

Order your UCF bearings from Camagris

Camagris currently offers12 UCF 200 Series models, from the UCF204 to the UCF215, with most sizes available for shipping within 24 hours.

To choose the right model, first check the shaft diameter, the center-to-center distance between the four holes, the outer dimension of the housing, the diameter of the fasteners, and the width of the bearing.

If you are unsure whether to choose a UCF, UCP, UCFL, UCFC, or UCF Series 300, compare all the dimensions rather than relying solely on the part number.