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UCP204 Pillow Block Bearing Unit – 20mm Bore, Cast Iron Housing, Set Screw Locking for Industrial Conveyors

The UCP204 is a heavy-duty, standard-duty pillow block bearing unit featuring a 20 mm inner bore. It consists of a solid cast-iron housing (P204) and a self-aligning, chrome steel (GCr15) insert ball bearing (UC204). Designed with a compact profile, easy handling, and perfect sealing against dust and moisture, it is the ideal mounted bearing solution for mining, metallurgy, agriculture, and conveying machinery. We support B2B buyers with fast delivery, customizable packaging, and flexible payment terms.

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Product overview

The UCP204 Mounted Pillow Block Unit is a pre-assembled, ready-to-mount bearing solution. It combines a wide inner-ring ball bearing equipped with set screws, housed inside a robust, two-bolt cast iron pedestal. The convex outer ring of the bearing insert matches the concave spherical shape inside the housing, allowing the unit to self-align. This intelligent design easily compensates for initial shaft misalignment or deviation, reducing abnormal loads and preventing premature wear.

Key dimensional specifications

Please use the following dimensions to ensure proper fitment on your conveyor frames or machinery bases.

Item

Specification

Unit Reference

UCP204

Insert Bearing No.

UC204

Housing No.

P204

Shaft Bore Diameter (d)

20 mm

Center Height (H / h)

33.3 mm

Overall Length (L / a)

127 mm

Bolt Hole Center Distance (J / e)

95 mm

Housing Base Width (A / b)

34 mm - 38 mm

Recommended Bolt Size

M10

Weight

≈ 0.60 kg - 0.68 kg

Material & performance features

Built to withstand harsh industrial environments, the UCP204 offers distinct operational advantages:

  • Rugged Construction: The housing is cast from high-strength iron to absorb vibrations and heavy impacts, while the bearing insert is forged from premium GCr15 chrome steel for exceptional rolling fatigue life.

  • Perfect Sealing: The insert bearing is fully sealed to prevent the ingress of dirt, dust, and water, protecting the internal rolling elements in dirty environments like mining and agriculture.

  • Easy Maintenance: Pre-lubricated with grease from the factory, the housing includes a built-in 45° grease zerk fitting, allowing for easy re-lubrication to extend the assembly's lifespan.

  • Secure Locking: Two grub (set) screws on the extended inner ring securely lock the bearing directly to the shaft, preventing slippage.

Broad application industries

Because of its ease of installation and high durability, the UCP204 is a staple component in mechanical power transmission:

  • Conveying machinery and material handling systems.

  • Mining, metallurgy, and aggregate sorting equipment.

  • Agricultural tractors and harvesting machinery.

  • Chemical, textile, and dyeing plant automation.

B2B procurement & packaging

We cater to the complex needs of original equipment manufacturers (OEMs) and wholesale distributors.

  • Packaging: Available in bulk industrial packaging (pallets/crates) for assembly lines, or custom-branded individual boxes according to buyers’ retail requirements.

  • Payment Terms: 100% T/T, 30% T/T advance with 70% against B/L copy, 30% T/T advance with 70% against L/C at sight, PayPal, and Western Union.

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    raywang@ddbearing.com​​​​​​​
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