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When a shaft needs secure, adjustable support in tight or overhead mounting positions, standard flat-base units fall short. Engineers, fabricators, and equipment builders working on conveyors, augers, fans, and agricultural machinery rely on hanger-type pillow block bearings to mount shafts from below or at angle — without compromising alignment or load capacity. The UCHA series is purpose-built for exactly these demanding scenarios.
This listing covers the UCHA204 through UCHA210 hanger-type mounted bearing units. Each unit pairs a cast iron or pressed-steel hanger housing with a self-aligning insert bearing, available in bore sizes ranging from 20 mm (0.79 in) to 50 mm (1.97 in). The set-screw locking collar secures the shaft firmly within the bore, while the two-bolt hanger bracket allows ceiling or overhead frame mounting. Overall housing width typically spans 60–130 mm (2.36–5.12 in) depending on the selected size.
Typical use cases include grain auger shaft support in agricultural equipment, overhead conveyor line shaft mounting in food processing or packaging facilities, and fan or blower shaft suspension in HVAC and ventilation systems — all scenarios where a hanger-type mount outperforms a standard pillow block in space efficiency and alignment flexibility.
The two-bolt hanger bracket is designed for ceiling or inverted frame installation, making it ideal for conveyor lines, auger systems, and suspended shaft applications where a flat-base unit cannot be used.
Seven size options from UCHA204 (20 mm bore) to UCHA210 (50 mm bore) cover a broad range of metric shaft diameters, reducing the need to source multiple product lines for a single project.
The integrated set-screw collar locks the shaft securely within the bore, preventing axial migration under dynamic or vibration-heavy loads — critical for rotating equipment in continuous operation.
The spherical outer surface of the insert bearing accommodates minor shaft misalignment (typically ±2°–3°), reducing stress on the housing and extending service life in real-world installations where perfect alignment is difficult to achieve.
Each unit is pre-greased at the factory and fitted with a grease fitting (Zerk/nipple) for periodic re-lubrication in the field, supporting long maintenance intervals in agricultural and industrial environments.
Dimensionally interchangeable with standard UCHA204–UCHA210 specifications, allowing direct replacement in existing equipment without modifying mounting frames or shaft assemblies.
| Bearing Series | UCHA204 / UCHA205 / UCHA206 / UCHA207 / UCHA208 / UCHA209 / UCHA210 |
|---|---|
| Bore Size Range | 20 mm – 50 mm (0.79 in – 1.97 in) |
| Bore Size (by variant) | See variant options |
| Housing Type | Hanger-type (two-bolt overhead/ceiling mount) |
| Housing Material | See variant options |
| Insert Bearing Type | Self-aligning ball bearing insert (UC series) |
| Locking Method | Set-screw collar |
| Lubrication | Pre-greased; re-lubrication via grease fitting |
| Misalignment Tolerance | Typically ±2°–3° |
| Overall Housing Width | Typically 60–130 mm (varies by size) |
| Bolt Hole Configuration | 2-bolt hanger bracket |
| Operating Temperature | Contact us to confirm |
| Seal Type | See variant options |
| Weight | See variant options |
Match the bore size to your shaft diameter. UCHA204 fits a 20 mm shaft, UCHA205 fits 25 mm, UCHA206 fits 30 mm, UCHA207 fits 35 mm, UCHA208 fits 40 mm, UCHA209 fits 45 mm, and UCHA210 fits 50 mm. Always measure your shaft with calipers before ordering — a loose fit will cause vibration and premature wear.
A standard pillow block (UCF or UCP series) mounts on a flat surface below the shaft. A hanger-type bearing (UCHA series) uses a two-bolt bracket designed for overhead or ceiling mounting, suspending the shaft from above. This makes UCHA units the correct choice for conveyor lines, auger systems, and any application where the mounting surface is above the shaft centerline.
Yes. The UC-series insert bearing inside the UCHA housing has a spherical outer surface that allows self-alignment, typically accommodating shaft misalignment of ±2°–3°. This is sufficient for most real-world installations where minor frame flex or shaft deflection is present, but is not a substitute for proper shaft alignment during installation.
Standard UCHA units use a grease seal that provides moderate protection against dust and moisture. For outdoor agricultural use or washdown environments, ensure regular re-lubrication via the grease fitting to displace moisture. If your application involves continuous water exposure or corrosive chemicals, contact us to confirm suitability or discuss stainless-steel alternatives.
Slide the bearing unit onto the shaft at the desired position. Tighten the set-screw(s) on the locking collar using the appropriate hex key to the torque specified for your bearing size — typically 5–20 Nm depending on bore diameter. Mount the hanger bracket to your overhead frame using two bolts, then check shaft alignment before final tightening. Re-lubricate via the grease fitting after installation.
Re-lubrication interval depends on operating speed, load, and environment. As a general guideline, re-grease every 3–6 months under normal conditions, or more frequently in high-temperature, high-speed, or contaminated environments. Use a lithium-based or compatible bearing grease and apply until fresh grease appears at the seal — do not over-grease.
Yes. These units conform to standard UCHA series dimensions, making them dimensionally interchangeable with other UCHA204–UCHA210 bearings. The bolt hole spacing, bore size, and overall envelope dimensions match the standard, so no modification to your existing mounting frame or shaft is required.
