UCP 306 Pillow Block Ball Bearing Units

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Overview of the UCP 306

UCP306 is a pillow block ball bearing unit featuring an extended inner-ring insert bearing and a pillow block housing. The housing has two bolt holes for easy mounting on flat surfaces.

UCP 306 Bearing Dimensions

Brand	BKZ / OEM
Model No.	UCP306
Insert Bearing Number	UC306
Housing Number	P306
Rolling Element Type	Ball
Mounting Type	2-Bolt Pillow Block Mount
Number of Mounting Holes	2
Locking Method	Set Screw Locking
Number of Set Screws	2
Bore Diameter / Shaft Diameter	30 mm
Overall Housing Length	180 mm
Housing Base Width	50 mm
Bearing Center Height from Mounting Surface	50 mm
Total Housing Height	95 mm
Mounting Hole Center Distance	140 mm
Mounting Slot Width	17 mm
Mounting Slot Length	20 mm
Housing Base Thickness	18 mm
Insert Bearing Inner Ring Width	43 mm
Raceway Center Position	17 mm
Mounting Bolt Size	M14
Basic Dynamic Radial Load Rating, Cr	26.7 kN
Basic Static Radial Load Rating, C0r	15.0 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, for Limited Initial Misalignment
Duty Type	Heavy-Duty UCP300 Series
Operating Temperature Range	−20°C to 100°C
Recommended Set Screw Tightening Torque	Approx. 4 N·m
Weight	Approx. 1.8 kg

Advantages for UCP 306

UCP306 bearing units are pillow block bearing units used in many applications because of the following advantages:

Designed for Flat-Surface Mounting

The P306 pillow block housing has two mounting holes, making the UCP306 suitable for installation on flat supporting surfaces such as machine frames and mounting bases.

Radial Load Capacity

With a UC306 insert ball bearing, the UCP306 primarily carries radial loads and can also accommodate limited axial loads in both directions.

Accommodates Initial Misalignment

The spherical outer surface of the insert bearing fits into the matching spherical bore of the housing. This design allows the UCP306 to accommodate limited initial misalignment between the shaft and mounting surface.

Easy to Install

The UCP306 is supplied as a complete bearing unit for easy installation. Its extended inner ring and two set screws allow the bearing to be secured directly to the shaft.

Heavy-Duty Capacity

As part of the UCP300 series, the UCP306 has a larger and more robust design than comparable UCP200-series units. It is suitable for relatively heavy-duty applications when the operating load remains within its rated capacity.

Protection Against Contamination

Seals on both sides of the insert bearing help retain grease and reduce the entry of dust, dirt, and other contaminants.

Applications for UCP 306

UCP306 bearing units are commonly used in the following applications:

Industrial Ventilation Fans: In an industrial ventilation fan, the UCP306 supports the fan shaft outside the casing.
Dust Collectors: A UCP306 can support the impeller shaft or cleaning-system drive shaft in a dust collector. Its sealed insert bearing helps reduce dust entry, while the grease fitting allows periodic relubrication. The pillow block housing also makes the unit easy to mount on the machine base.
Centrifugal Blowers: UCP306 units can serve as bearing supports along the blower shaft. They carry radial loads generated by the rotating impeller and accommodate limited initial installation misalignment. However, the blower’s speed and vibration must remain within the bearing unit’s rated limits.
Grain Grinding Machines: Feeding rolls and auxiliary drive shafts are common mounting positions for the UCP306. The unit provides robust support for a 30 mm shaft and withstands moderate radial loads. A higher-capacity bearing arrangement may be necessary for the main grinding rotor.
Printing and Coating Machines: Auxiliary winding, unwinding, and guide-roller shafts can use UCP306 bearing units. The complete unit simplifies mounting on the machine frame and supports radial loads from the roller. Where strict runout control is required, a precision bearing arrangement should be used instead.

FAQS for UCP 306

Q1. Is the UCP306 prelubricated before delivery?

Yes. The UCP306 is prelubricated before delivery. In general, no additional lubrication is required during initial installation. However, periodic relubrication is necessary during operation.

Q2. Can the UCP306 replace an SN-series plummer block?

No. They are designed for different applications and cannot be directly interchanged. The UCP306 is a one-piece pillow block ball bearing unit, while an SN-series plummer block is a split housing designed for easier installation and maintenance in heavy-duty applications.

Q3. What is the difference between UCP306, UCF306, UCFS306, and UCT306?

UCP306, UCF306, UCFS306, and UCT306 generally use the same UC306 insert bearing, which has a 30 mm bore, an extended inner ring, and two set screws. The main difference is the housing design and mounting method.

UCP306: Two-bolt pillow block housing
UCF306: Four-bolt square flange housing
UCFS306: Four-bolt square flange housing with a locating spigot
UCT306: Take-up housing that slides inside a guide frame

Q4. What is the MOQ for UCP306?

The minimum order quantity for UCP306 is 100 pieces.

Q5. Can I buy a small quantity of UCP306 units before placing a bulk order?

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

Other Sizes for UCP 300 series

Bearing No.	Dimensions (mm)										Weight (kg)	Bearing Type	Housing Type
Bearing No.	B	L	J	H	H0	H1	A	N	N1	De	Weight (kg)	Bearing Type	Housing Type
UCP305	38	175	132	45	85	15	45	17	20	M14	1.4	UCP305	UCP305
UCP306	43	180	140	50	95	18	50	17	20	M14	1.8	UCP306	UCP306
UCP307	48	210	160	56	106	20	56	17	25	M14	2.8	UCP307	UCP307
UCP308	52	220	170	60	116	22	60	17	27	M14	3	UCP308	UCP308
UCP309	57	245	190	67	129	24	67	20	30	M16	4.1	UCP309	UCP309
UCP310	61	275	212	75	143	27	75	20	35	M16	5.8	UCP310	UCP310
UCP311	66	310	236	80	154	30	80	20	38	M16	7.4	UCP311	UCP311
UCP312	71	330	250	85	165	32	85	25	38	M20	9.4	UCP312	UCP312
UCP313	75	340	260	90	176	33	90	25	38	M20	10	UCP313	UCP313
UCP314	78	360	280	95	187	35	90	27	40	M22	12	UCP314	UCP314
UCP315	82	380	290	100	198	35	110	27	40	M22	14	UCP315	UCP315
UCP316	86	400	300	106	210	40	110	27	40	M22	18	UCP316	UCP316
UCP317	96	420	320	112	220	40	110	33	45	M27	20	UCP317	UCP317
UCP318	96	430	330	118	235	45	110	33	45	M27	24	UCP318	UCP318
UCP319	103	470	360	125	250	45	120	36	50	M30	29	UCP319	UCP319
UCP320	108	490	380	140	275	50	120	36	50	M30	35	UCP320	UCP320

Other Products from BKZ Industry

UCP306 is only one of the popular bearing units manufactured by BKZ Industry. Other bearing unit series, including UCF, UCT, and UCP, are also available. In addition, BKZ Industry supplies deep groove ball bearings, spherical roller bearings, cylindrical roller bearings, and more.