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UCP & NAP Series

UCP and NAP series cast iron pillow block bearing units, ISO interchangeable, set screw & eccentric locking types. In stock, OEM available for industrial distributors, conveyor and agricultural machinery.

Classification :

Pillow Block Bearings

Keywords :

UCP pillow block bearing,NAP bearing unit,mounted bearing,cast iron housing bearing,agricultural machinery bearing,conveyor bearing

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PRODUCT DETAILS

 

UCP & NAP Series Pillow Block Bearings | Cast Iron Mounted Unit Bearings

ISO Standard Ready Stock Interchangeable OEM Supported Mixed Order

YJZY Factory Direct Mounted Bearing Units

Full range UCP200 UCP300 NAP200 metric & inch pillow block bearings. Self‑aligning cast iron housing, compatible with mainstream brands, for machinery distributors & equipment manufacturers.

Request Wholesale Quote Full Specification List

Core Advantages

  • Self‑aligning structure to compensate shaft misalignment
  • Double‑lip 2RS seal for dust & splash resistance
  • ISO standard dimension, direct brand replacement
  • High‑carbon chromium steel insert for long service life
  • Set‑screw locking / YA extended inner ring optional

Typical Applications

  • Agricultural harvesters & seeders
  • Conveyor belt & transmission systems
  • Textile & packaging machinery
  • Industrial fans, pumps & automation equipment
  • Light‑medium duty construction auxiliary machinery

UCP VS NAP Housing Difference

Model Housing Feature Load Level Usage Scene
UCP Pillow Block Wide 2‑bolt cast iron base Medium & Heavy Load, Anti‑Vibration Conveyor, large harvester, stone machinery
NAP Pillow Block Slim compact narrow base Light & Medium Load Packing machine, textile loom, small fan
Español: Rodamientos de pedestal UCP NAP, unidades montadas en stock, aceptamos pedidos mixtos y servicio OEM para distribuidores industriales.

Product Dimension Tables (Unit:mm)

Complete model list below. Contact sales team to obtain printable PDF dimension drawings.

1. UCP200 Series Metric Pillow Block Bearings

Model Dimensions(mm) Model 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 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

2. UCP300 Heavy‑Duty Series

Model Dimensions(mm) Model Dimensions(mm)
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 85×60×330×250×165×71
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    

3. NAP200 Compact & Inch‑Bore UCP Models

Model Dimensions(mm) Model Dimensions(mm)
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 88.9×80×292×232×175×82.6
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 42.9×30×165×121×83×38.1 UCP206‑18 42.6×28.575×160×121×82×38.1
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

Buyer Frequently Asked Questions

Standard stock items can be shipped within 7‑10 working days. For custom modified models like YA extended inner ring, production lead‑time is 20‑25 working days.
We follow ISO international standard. Material is GCr15 chrome steel. Inspection report can be provided upon customer request for bulk orders.
Yes. Standard is double‑lip 2RS rubber seal. We can customize triple‑seal, stainless steel insert and anti‑corrosion housing for harsh working environments.
Samples are available. Customers bear the sample cost and international freight. Sample cost can be deducted from your first formal bulk order.
Yes. We support laser marking customer logo on bearing insert and housing, neutral export carton, customized outer‑package for distributor customers.
Yes. Outer housing mounting dimension, insert spherical outer diameter and bore size are ISO interchangeable, no modification to customer equipment needed.

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Large inventory, flexible MOQ and custom packaging for global bearing distributors.

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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 Forging

Bearing Annealing

Bearing Annealing

Turning Process

Turning Process

Quenching

Quenching

Bearing Assembly

Bearing Assembly

Bearing Clearance Testing

Bearing Clearance Testing

Grease injection

Grease injection

Bearing Marking

Bearing Marking

Pillow Block Bearings

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