UC & UCW Series Insert Ball Bearings

Name: UC & UCW Series Insert Ball Bearings
Brand: YJZY

UC & UCW series insert ball bearings with set screw locking. UC standard wide inner ring and UCW extra wide inner ring outer spherical bearings. China factory supply UC201~UC212 and UCW205~UCW210 for pillow block housing, agricultural machinery and conveyor systems.

Classification :

Pillow Block Bearings

Keywords :

UC200 series bearing, UC300 series bearing,low vibration bearing, self-aligning bearing

+8613561736033

info@jnyjbearing.com

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UC & UCW Series Insert Ball Bearings | Set Screw Locking Outer Spherical Bearings

UC series insert ball bearings, also known as outer spherical ball bearings, are heavy-duty radial bearings with wide inner ring and set screw locking design. UCW variant features extra wide inner ring for stronger axial fixation. The two set screws on the inner ring lock firmly onto the shaft, delivering stable transmission. UC and UCW insert bearings feature excellent self-aligning performance to compensate shaft misalignment, compatible with all standard pillow block housings. Most popular UC and UCW bearing models are in stock for fast wholesale delivery.

Key Features of UC & UCW Series Insert Bearings

Set Screw Locking Mechanism

Two set screws on inner ring to lock bearing to shaft, simple installation and reliable fixing for continuous rotation.

UC & UCW Difference

UC has standard wide inner ring; UCW adopts extra wide inner ring for better axial holding force, anti-slip on shaft.

Self-Aligning Ability

Outer spherical surface allows minor shaft misalignment, reduces operating friction and extends service life.

Double Lip Seals

Built-in double rubber seals prevent dust, dirt and moisture ingress, suitable for dusty and humid working sites.

UC Series Insert Ball Bearings Dimensions Table

Bearing Model	Bore d(mm)	Outer Diameter D(mm)	Width B(mm)	Weight(kg)
UC201	12	40	22	0.13
UC202	15	40	22	0.12
UC203	17	40	22	0.11
UC204	20	47	25	0.17
UC205	25	52	27	0.23
UC206	30	62	30	0.35
UC207	35	72	34	0.55
UC208	40	80	36	0.72
UC209	45	85	38	0.86
UC210	50	90	40	1.00
UC211	55	100	43	1.34
UC212	60	110	46	1.74

UCW Series Insert Ball Bearings Dimensions Table

Bearing Model	Bore d(mm)	Outer Diameter D(mm)	Width B(mm)	Weight(kg)
UCW205	25	52	34	0.28
UCW206	30	62	38	0.42
UCW207	35	72	42	0.63
UCW208	40	80	45	0.84
UCW209	45	85	48	1.02
UCW210	50	90	50	1.20

Application Fields

Agricultural Machinery Conveyor Systems Food Processing Equipment Packaging Machinery Textile Machines Pillow Block Bearing Units

UC series insert ball bearings are the most widely used outer spherical bearings. UCW extra wide inner ring bearings are chosen for applications requiring stronger axial locking. Combined with various pillow block housings, they form complete bearing units, commonly used for heavy-load transmission machinery in agriculture, material handling and general industrial equipment.

Our Factory Advantages

10+ years professional Chinese bearing manufacturer, OEM & wholesale service available
Full range UC and UCW series insert bearings in stock, fast lead time for bulk orders
Strict quality inspection before shipment, stable performance and long service life
Custom laser marking and packaging to support your brand business
Competitive factory direct price for large quantity wholesale purchase

Frequently Asked Questions

Q1: What is UC series insert ball bearing?

A1: UC insert ball bearing is a type of outer spherical ball bearing with two set screws on inner ring. It can lock onto shaft directly and works with pillow block housings to form bearing units.

Q2: What is the difference between UC and UCW bearing?

A2: UC bearing has standard wide inner ring. UCW bearing has extra wide inner ring, providing larger contact area with shaft and better anti-slip performance for heavy axial load working conditions.

Q3: What is the difference between UC bearing and UB bearing?

A3: UC bearing uses set screw locking; UB bearing uses eccentric collar locking. UC is more popular and cost-effective for most standard applications, while UB is easier to disassemble.

Q4: Are UC and UCW bearings interchangeable with standard pillow block housings?

A4: Yes. UC and UCW outer spherical bearings adopt same outer dimension, fit all standard pillow block, flange and take-up housings.

Q5: Do you keep UC and UCW series bearings in stock?

A5: We maintain inventory for all hot-selling UC201 ~ UC212 and UCW205 ~ UCW210 models, ready for fast shipment for wholesale orders.

Q6: Can you provide OEM service for UC & UCW bearings?

A6: Yes, OEM service is available. We can do custom logo marking, special packaging and customized tolerance as your requirements.

Get Quotation for UC & UCW Series Insert Bearings

Send us your required bearing model and quantity. We will provide competitive factory price for your wholesale order.

Mounted bearings & pillow block bearings - UCP, UCF, UC series with housing, ready-to-use units for industrial machinery

Pillow Block Bearings, also known as housed bearing units, are pre-assembled units combining high-precision insert ball bearings with robust cast iron or stainless steel housings. Designed for easy installation, reliable operation and low maintenance, these units feature excellent self-aligning performance, effective sealing against dust and moisture, and strong load capacity, making them ideal for a wide range of industrial applications.

Core Advantages

Easy & Fast Installation: Pre-assembled units eliminate the need for separate bearing and housing installation, reducing on-site assembly time.
Self-Aligning Performance: Spherical outer diameter of insert bearings automatically compensates for shaft misalignment and mounting errors, ensuring smooth operation.
Superior Sealing: Multi-labyrinth seals effectively block dust, dirt and moisture, extending service life in harsh working environments.
Wide Compatibility: Available in various housing styles (pillow block, flange, take-up) and shaft sizes, suitable for metric and inch shafts.
Low Maintenance: Equipped with grease fittings for convenient relubrication, supporting long-term continuous operation.

Typical Industrial Applications

Widely used in conveyor systems, agricultural machinery, food processing equipment, fans, pumps, packaging machines, textile equipment, mining machinery, and general industrial transmission systems.

We offer a full range of pillow block and mounted bearing units to meet diverse industrial installation and load requirements:

Series	Housing Type	Key Features
UCP Series	Standard Pillow Block (2-bolt)	Most widely used, easy installation, suitable for general industrial machinery, conveyors, fans and pumps
UCT Series	Take-Up Unit (Slotted)	Adjustable housing for belt tensioning, ideal for belt conveyors, textile machinery and packaging lines
UCF Series	Square Flange (4-bolt)	Rigid square flange for side/end mounting, perfect for food processing equipment and automation lines
UCFC Series	Round Flange (4-bolt)	Compact round flange, space-saving, suitable for pumps, fans and light to medium-duty equipment
UCFL Series	Diamond Flange (2-bolt)	Narrow rhombic flange, ideal for limited installation space, small conveyors and agricultural machinery
UCFU Series	Square Flange with Boss	High-precision positioning with raised boss, suitable for precision transmission and automated production lines
NAP Series	Narrow Pillow Block	Slim vertical housing, space-saving, for light-duty conveyors and small mechanical equipment

PRODUCT TESTING

Bearing Forging

Bearing Annealing

Turning Process

Quenching

Bearing Assembly

Bearing Clearance Testing

Grease injection

Bearing Marking

Pillow Block Bearings