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When standard carbon steel bearings corrode, seize, or fail prematurely in wet, washdown, or chemically exposed environments, engineers and maintenance teams need a dependable alternative. These stainless steel bearing insert bearings with grub screw are designed for industrial operators, agricultural equipment builders, and food-processing facility managers who require long-lasting rotational support without constant replacement cycles.
Each bearing is a SUC-series insert unit constructed from stainless steel inner and outer rings with a stainless steel grub screw locking mechanism. Imperial bore sizes range from 19.050 mm (3/4") up to 50.8 mm (2"), covering the most common shaft dimensions used in North American and mixed-standard machinery. The overall envelope dimensions vary by size — refer to variant options for exact OD, inner width (Bi), and outer width (Be) values.
Typical applications include stainless steel insert bearings for conveyor systems in food and beverage plants, corrosion-resistant shaft support in agricultural irrigation equipment, and replacement insert bearings for pillow block housings in marine or outdoor power transmission setups where moisture ingress is a constant concern.
Inner ring, outer ring, and grub screw are all stainless steel, providing strong resistance to rust, oxidation, and mild chemical exposure in washdown and outdoor environments.
Available in eight imperial bore sizes from 19.050 mm (3/4") to 50.8 mm (2"), matching the most widely used shaft diameters in North American industrial and agricultural machinery.
Dual grub screws secure the bearing firmly to the shaft, preventing axial migration under load and simplifying installation without requiring specialized tooling.
Manufactured to SUC series dimensional standards, ensuring direct interchangeability with existing UC/SUC pillow block and flange housings already installed in your equipment.
Factory-sealed with grease pre-packed to protect internal raceways from dust, moisture, and particulate ingress — reducing maintenance intervals in harsh operating conditions.
Suitable for conveyor lines, agricultural equipment, food processing machinery, packaging lines, and general power transmission assemblies requiring corrosion-resistant bearing inserts.
| Series | SUC (Stainless Steel Insert Bearing) |
|---|---|
| Material | Stainless Steel (inner ring, outer ring, grub screw) |
| Bore Type | Imperial |
| Bore Range | 19.050 mm (3/4") – 50.8 mm (2") |
| Available Sizes | SUC204-12, SUC205-16, SUC206-18, SUC206-20, SUC207-20, SUC207-23, SUC208-24, SUC210-32 |
| Locking Method | Grub Screw (Set Screw) |
| Outer Diameter (OD) | See variant options |
| Inner Width (Bi) | See variant options |
| Outer Width (Be) | See variant options |
| Lubrication | Pre-greased, factory sealed |
| Housing Compatibility | UC/SUC series pillow block and flange housings |
| Weight | See variant options |
Match the bore size to your shaft diameter. For example, if your shaft is 1" (25.4 mm), select SUC205-16. If your shaft is 1-1/2" (38.1 mm), select SUC208-24. Always measure your shaft with calipers before ordering to confirm the exact diameter, as worn shafts may be slightly undersized.
Yes. SUC series insert bearings follow the same dimensional envelope as standard UC series bearings, making them direct drop-in replacements for UC204, UC205, UC206, UC207, UC208, and UC210 inserts in pillow block (UCP) and flange (UCF/UCFL) housings.
These bearings are well-suited for wet, washdown, outdoor, and mildly corrosive environments such as food and beverage processing lines, agricultural irrigation systems, marine equipment, and outdoor conveyor structures. They resist rust and oxidation significantly better than standard carbon steel bearings in these conditions.
The dual grub screw design provides firm axial and rotational locking on the shaft when tightened to the recommended torque. For high-vibration or heavy-load applications, ensure the shaft has a flat or keyway machined at the grub screw contact point to maximize holding force and prevent shaft damage.
These bearings come pre-greased from the factory and are sealed to retain lubrication. For standard duty cycles, re-greasing intervals depend on operating speed, load, and environmental exposure. In high-temperature or high-speed applications, periodic re-greasing through the grease fitting (if present on the housing) is recommended.
Yes, as long as the bore size and SUC/UC series dimensions match your existing bearing. The stainless steel version is a direct dimensional equivalent to the carbon steel UC series, so no housing modification is required. Simply remove the old insert and press in the new stainless steel unit.
The number after "SUC" indicates the bearing series (204, 205, 206, 207, 208, 210), which corresponds to a specific outer diameter and width envelope. The suffix (e.g., -12, -16, -18) denotes the bore size in 1/16" increments — for example, -12 = 12/16" = 3/4", and -16 = 16/16" = 1". Select the series that matches both your shaft bore and your existing housing series.
