UCP & NAP Series

UCP and NAP series are standard vertical pillow block bearings with cast iron housings, available in set screw locking and eccentric collar locking types. They feature high load capacity, stable running and strong versatility, widely used in general industry, conveyors and agricultural machinery.

Classification :

Pillow Block Bearings

Keywords :

UCP Series Pillow Block Bearings，UCP200 Series Pillow Block Bearings，UCP300 Series Pillow Block Bearings，Cast Iron UCP Pillow Block Bearings，Self-Aligning UCP Series Bearings，UCP Series Bearings Manufacturer，High Quality UCP Bearings Factory

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🎯 Versatile Mounting & Self-Aligning Performance

UCP and NAP series pillow block bearings consist of high-performance insert bearings and robust cast iron housings, offering strong self-aligning ability to accommodate shaft misalignment and installation deviation. They ensure stable running, low vibration and easy on-site installation for various mechanical equipment.

⚙️ Sturdy Structure & Wide Application Compatibility

Made of premium bearing steel and durable cast iron housings, these units provide excellent radial load capacity, reliable sealing and long service life. UCP series features standard pedestal design while NAP series offers narrow and compact housing structure, both available in metric and inch sizes to meet different installation space and working requirements.

🛠️ Extensive Industry Uses

Widely used in conveyor systems, agricultural machinery, food processing equipment, fans, pumps, packaging machines, textile equipment and general light to medium-duty transmission machinery, ideal for scenarios requiring convenient mounting and stable performance.

Bearing Number	Dimensions（mm）
UCP201	30.2×12×127×95×62×27.4
UCP201/YA	30.2×12×127×95×62×31
UCP202	30.2×15×127×95×62×27.4
UCP202/YA	30.2×15×127×95×62×31
UCP203	30.2×17×127×95×62×27.4
UCP203/YA	30.2×17×127×95×62×31
UCP204	33.3×20×127×95×65×31
UCP205	36.5×25×140×105×71×34.1
UCP206	42.9×30×165×121×83×38.1×1.3
UCP207	47.6×35×167×127×93×42.9
UCP208	49.2×40×184×137×100×49.2
UCP209	54×45×190×146×106×49.2
UCP210	57.2×50×206×159×114×51.6
UCP211	63.5×55×219×171×126×55.6
UCP212	69.8×60×241×184×138×65.1
UCP213	76.2×65×265×203×151×65.1
UCP214	79.4×70×266×210×157×74.6
UCP215	82.6×75×275×217×163×77.8
UCP216	88.9×80×292×232×175×82.6
UCP217	95.2×85×310×247×187×85.7
UCP218	101.6×90×327×262×200×96
UCP220	115×100×380×308×225×108
UCP305	45×25×175×132×85×38
UCP306	50×30×180×140×95×43
UCP307	56×35×210×160×106×48
UCP308	60×40×220×170×116×52
UCP309	67×45×245×190×129×57
UCP310	75×50×275×212×143×61
UCP311	80×55×310×236×154×66
UCP312	85×60×30×250×165×71
UCP313	90×65×340×260×176×75
UCP314	95×70×360×280×187×78
UCP315	100×75×380×290×198×82
UCP316	106×80×400×300×210×86
UCP317	112×85×420×320×220×96
UCP318	118×90×430×330×235×96
UCP319	125×90×470×360×250×103
UCP320	140×100×490×380×275×108
UCP321	140×105×490×380×280×112
UCP322	150×110×520×400×300×117
UCP324	160×120×570×450×320×126
UCP326	180×130×600×480×355×135
UCP328	200×140×620×500×390×145
NAP201	30.2×12×125×96×57×43.5
NAP202	30.2×15×125×96×57×43.5
NAP203	30.2×17×125×96×57×43.5
NAP204	33.3×20×127×96×63.8×43.5
NAP205	36.5×25×140×105×69.5×44.3
NAP206	42.6×30×160×121×82×48.3
NAP207	47.6×35×167×126×92×51.1
NAP208	49.2×40×180×136×98×56.3
NAP209	54×45×190×146×107×56.3
NAP210	57.2×50×204×159×113×62.7
NAP211	63.5×55×219×172×125×71.4
NAP212	69.9×60×238×186×137×77.8
NAP213	76.2×65×262×203×148.2×85.7
NAP214	79.4×70×266×210×155×85.7
NAP215	82.6×75×275×217×163×92.1
NAP216	88.9×80×292×232×78×25
UCP201-8	30.2×12.7×125×96×57×27.4
UCP202-10	30.2×15.875×125×96×57×27.4
UCP202-9	30.2×14.288×125×96×57×27.4
UCP203-11	30.2×17.462×125×96×57×27.4
UCP204-12	33.3×19.05×127×96×63.8×31
UCP205-14	36.5×22.225×140×105×69.5×34.1
UCP205-15	36.5×23.812×140×105×69.5×34.1
UCP205-16	36.5×25.4×140×105×69.5×34.1
UCP206-16	34.1×52×14.3×140×105×36.5
UCP206-18	42.6×28.575×60×121×82×38.1
UCP206-19	42.6×30.162×160×121×82×38.1
UCP206-20	42.6×31.75×160×121×82×38.1
UCP207-20	47.6×31.75×167×126×92×42.9
UCP207-21	47.6×33.338×167×126×92×42.9
UCP207-22	47.6×34.952×167×126×92×42.9
UCP207-23	47.6×36.512×167×126×92×42.9
UCP208-24	49.2×38.1×180×136×98×49.2
UCP208-25	49.2×39.688×180×136×98×49.2
UCP209-26	54×41.275×190×146×107×49.2
UCP209-27	54×42.862×190×146×107×49.2
UCP209-28	54×44.45×190×146×107×49.2
UCP210-30	57.2×47.625×204×159×113×51.6

Category Overview

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