UCF 320 Square Flanged Ball Bearing Units

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Overview of the UCF320

UCF 320 is a flangged ball bearing unit with a square cast iron housing and set screw locking. The UCF 320 with its big inner diameter and suqare housing, they are suitable for heavy application and which need to be easy installation.

UCF320 Specifications with Dimensions, and Weight

Brand	BKZ / OEM
Model No.	UCF320
Insert Bearing Number	UC320
Housing Number	F320
Rolling Element Type	Ball
Mounting Type	4-Bolt Square Flange Mount
Number of Mounting Holes	4
Locking Method	Set Screw Locking
Number of Set Screws	2
Bore Diameter / Shaft Diameter	100 mm
Overall Length	310 mm
Overall Width	310 mm
Housing Height / Base Thickness	94 mm
Mounting Hole Center Distance	242 mm
Mounting Hole Diameter	38 mm
Housing Side Thickness / Flange Thickness	32 mm
Bearing Center Position from Mounting Surface	59 mm
Total Height from Mounting Surface	125 mm
Insert Bearing Inner Ring Width	108 mm
Raceway Center Position	42 mm
Mounting Bolt Size	M33
Grease Fitting	M10 × 1
Basic Dynamic Radial Load Rating, Cr	173 kN
Basic Static Radial Load Rating, C0r	141 kN
Bearing Ring Material	SAE 52100 / GCr15 Bearing Steel / Chrome Steel
Ball Material	SAE 52100 / GCr15 Bearing Steel
Cage Material	Pressed Steel
Housing Material	Cast Iron
Seal Type	Sealed on Both Sides
Lubrication	Grease, Relubricatable
Self-Aligning	Yes
Duty Type	Heavy Duty
Operating Temperature Range	-20°C to 100°C
Recommended Set Screw Tightening Torque	75 N·m
Weight	Approx. 26 kg

Advantages for UCF 320

UCF 320 has many advantages due to its design, structure, and materials. Here are the key ones.

Easy Mounting and Installation

The UCF 320 contains a UC320 insert bearing that can be mounted directly onto the shaft and secured with two set screws. Its four-bolt square flange housing can be easily attached to vertical or horizontal mounting surfaces, machine frames, and other supporting structures.

Smooth and Stable Operation

The extended inner ring and two set screws securely lock the insert bearing onto the shaft. Meanwhile, the rigid four-bolt housing provides stable support, helping the shaft and bearing operate smoothly.

Self-Aligning Ability

The spherical outer surface of the insert bearing fits into the matching spherical bore of the housing. This design allows the UCF 320 to accommodate a limited amount of initial misalignment during installation.

Suitable for Heavy-Duty Applications

The UCF 320 has a robust UC320 insert bearing, a rigid cast-iron housing, and relatively high radial load ratings. These features make it suitable for large shafts and many heavy-duty industrial applications.

Resistance to Contamination

The insert bearing is sealed on both sides to help retain grease and prevent dust and other contaminants from entering.

Applications for UCF 320

UCF320 bearing units offer many advantages and can be used in a wide range of applications. They are commonly found in the following machines:

Conveyors: UCF320 bearing units are commonly installed at both ends of large drive rollers, head pulley shafts, or tail pulley shafts. The units are mounted on the conveyor frame or end plates to support the shaft and radial loads.
Industrial Fans: Large industrial fans may use UCF320 bearing units on the end support plates of the impeller shaft or drive shaft. They support the rotating shaft and help maintain stable operation.
Feed Mixers: UCF320 bearing units can be installed at both ends of the mixing shaft or screw shaft, usually outside the mixing chamber’s end plates. They support the radial loads generated by the shaft and mixed material. External mounting also facilitates lubrication, inspection, and bearing replacement.
Aggregate Washers: UCF320 bearing units may be mounted on the end plates supporting the washing drum or screw shaft. They support the radial loads generated by the rotating components. The rigid cast-iron housing, seals, and relubrication feature help the unit operate in dusty and damp environments.
Rotary Drum Machines: UCF320 bearing units can be installed at both ends of the drum drive shaft or supporting shaft. They support radial loads generated by the drum and processed material. The square flange housing can be securely attached to the machine’s end frame or side plates.

FAQS for UCF 320

Q1. Can the UC320 insert bearing be replaced separately?

Yes. The UC320 insert bearing can be replaced separately if the F320 housing is still in good condition. BKZ Industry can supply UC320 insert bearings and F320 housings separately. Contact BKZ Industry to purchase the component you need.

Q2. Is UCF320 interchangeable between different brands?

In most cases, UCF320 bearing units from different brands are interchangeable when their bore size, mounting dimensions, tolerances, locking method, and other specifications are the same. However, some manufacturers may use different dimensions or designs. Confirm the specifications with BKZ Industry before replacement.

Q3. What is the difference between UCF320 and UCF320-64?

The main difference between UCF320 and UCF320-64 is the bore diameter. UCF320-64 has a 4-inch bore, equivalent to 101.6 mm, while UCF320 has a 100 mm bore. Therefore, they cannot be installed on the same shaft without changing the shaft size or using an appropriate solution.

Q4. What is the difference between UCF320 and UCFL320?

The main difference is the housing shape and mounting configuration. UCF320 has a four-bolt square cast-iron housing, while UCFL320 has a two-bolt oval cast-iron housing. Their mounting-hole patterns are different.

Q5. Can UCF320 carry axial loads?

Yes. The UC320 insert bearing inside the unit is based on a deep-groove ball bearing design, allowing it to carry radial loads and limited axial loads in both directions. However, UCF320 is not intended for applications dominated by heavy axial loads.

Q6. What is the MOQ for UCF320?

The minimum order quantity for UCF320 is 100 pieces.

Q7. Can I buy a small quantity of UCF320 units before placing a bulk order?

Yes. You can place a trial order to check the product before proceeding with a bulk order.

Other Sizes for UCF 300 Series

Bearing No.	Dimensions (mm)								Weight (kg)	Bearing Type	Housing Type
Bearing No.	B	L	J	A	A1	A2	N	De	Weight (kg)	Bearing Type	Housing Type
UCF305	38	110	80	29	13	16	16	M14	1.1	UCF305	F305
UCF306	43	125	95	32	15	18	16	M14	1.6	UCF306	F306
UCF307	48	135	100	36	16	20	19	M16	2	UCF307	F307
UCF308	52	150	112	40	17	23	19	M16	2.7	UCF308	F308
UCF309	57	160	125	44	18	25	19	M16	3.4	UCF309	F309
UCF310	61	175	132	48	19	28	19	M20	4.5	UCF310	F310
UCF311	66	185	140	52	20	30	23	M20	5.5	UCF311	F311
UCF312	71	195	150	86	22	33	23	M20	6.5	UCF312	F312
UCF313	75	208	166	58	22	33	23	M20	7.9	UCF313	F313
UCF314	78	226	178	61	25	36	25	M22	9.5	UCF314	F314
UCF315	82	236	184	66	25	39	25	M22	12	UCF315	F315
UCF316	86	250	196	68	27	38	31	M27	14	UCF316	F316
UCF317	96	260	204	74	27	44	31	M27	16	UCF317	F317
UCF318	96	280	216	76	30	44	35	M30	19	UCF318	F318
UCF319	103	290	228	94	30	59	35	M30	22	UCF319	F319
UCF320	108	310	242	94	32	59	38	M33	26	UCF320	F320

Other Products from BKZ Industry

UCF320 is only one type of mounted ball bearing unit manufactured by BKZ Industry. It also produces UCF317, UCF316, UCFL203, and many other series. In addition, BKZ Industry supplies various types of ball bearings and roller bearings.