Pillow Block Bearings Bearings Units Uctb201 Uctb202 Uctb203 Uctb204 Uctb205 Uctb206 Uctb207 Uctb208 Uctb209 Uctb210 Uctb211 Uctb212 Uctb213 Uctb214
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Basic Info.
Packaging & Delivery
Product Description
UJK Insert Bearings with Cast Iron and Cast Steel Housings
Product Overview
UJK manufactures a robust line of insert bearings (Y-bearings) housed in high-strength cast iron (Grade GGG40/CAST IRON) and cast steel (Grade ZG270-500/CAST STEEL) housings. These units are engineered for heavy-duty and severe-service industrial applications where exceptional load capacity, impact resistance, and longevity are paramount. Combining a precision deep groove ball bearing with a rugged, cast housing, UJK units provide a complete, reliable, and ready-to-install solution for the most demanding environments.
Key Features & Advantages
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Superior Housing Strength: Available in high-grade Cast Iron for excellent durability and vibration damping, or Cast Steel for ultimate load capacity and shock resistance in the most severe applications.
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Eccentric Locking Collar Design: The standard locking mechanism (e.g., in UCP series) ensures a secure, vibration-proof grip on the shaft without causing damage, allowing for easy adjustment and precise positioning.
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Set Screw Locking Option: Available in series like UCT, this design provides a simple and effective alternative for securing the bearing onto the shaft.
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Advanced Sealing System: Features triple-lip contact seals with advanced elastomers for maximum protection against harsh contaminants, extreme moisture, and particulate ingress. Pre-lubricated with high-temperature or moisture-resistant grease for extended, maintenance-free service life.
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High-Temperature Capability: Cast housing materials and specialized seals and greases allow for operation in higher temperature environments compared to pressed steel units.
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Interchangeability: Manufactured to international standard dimensions (ISO, JIS, ANSI), ensuring perfect interchangeability with other major global brands for easy replacement and selection.
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Corrosion Resistance: Housings feature a high-quality surface treatment or coating, enhancing resistance to corrosion in challenging industrial atmospheres.
Series Model Guide & Housing Material Comparison
UJK offers a comprehensive range of cast housing types to suit various heavy-duty mounting requirements. The following table outlines the key series and their typical housing material:
| Series Code | Housing Type | Mounting Style | Primary Locking Mechanism | Typical Housing Material | Key Characteristics |
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| UCP | Pillow Block / Plummer Block | Two-Bolt | Eccentric Collar | Cast Iron / Cast Steel | The industry standard for base mounting on horizontal surfaces. |
| UCF | Flange Block | Four-Bolt | Eccentric Collar | Cast Iron / Cast Steel | For vertical or horizontal mounting onto machine frames or walls. |
| UCFL | Long Flange Block | Four-Bolt | Eccentric Collar | Cast Iron | Provides a larger, more stable mounting base for higher overturning moments. |
| UCT | Pillow Block / Plummer Block | Two-Bolt | Set Screw (Grub Screw) | Cast Iron | A robust alternative to the eccentric collar design. |
| UCPA | Take-Up Block | Adjustable | Eccentric Collar | Cast Iron / Cast Steel | Designed for conveyor systems to adjust belt tension and alignment. |
| UCFB | Four-Bolt Flange Block | Four-Bolt | Eccentric Collar | Cast Iron | A compact, square flange design for space-constrained applications. |
| Self-Aligning Pillow Block | Two-Bolt | Eccentric Collar | Cast Iron / Cast Steel | Features a spherical outer design to accommodate initial shaft misalignment. |
Material Selection Guide:
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Cast Iron (GGG40): Excellent choice for most heavy-duty applications. Offers good strength, wear resistance, and inherent vibration damping properties.
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Cast Steel (ZG270-500): Specified for the most extreme applications involving heavy shock loads, high impact potential, and elevated temperatures.
Technical Specifications
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Bearing Type: Deep Groove Ball Insert Bearing (Y-Bearing)
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Inner Diameter Range: Commonly available from 20mm to 100mm+ (e.g., UCP204 to UCP216)
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Housing Material: High-Grade Cast Iron or Cast Steel
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Sealing: Triple-Lip Contact Seals (RS type) - often available in NBR or FKM for oil/high temp.
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Lubrication: Pre-lubricated with high-performance grease (standard, high-temperature, or food-grade options available).
