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When your conveyor table, assembly line, or material-handling station struggles with directional changes, friction drag, or load-point wear, the right ball transfer unit bearing makes all the difference. Engineers, fabricators, and DIY workshop builders rely on CY-series ball transfer units to eliminate manual repositioning and keep workpieces gliding effortlessly in any direction.
These ball transfer unit bearings feature a hardened steel load ball seated in a precision housing packed with smaller recirculating support balls. Available in seven models — CY-8H, CY-12H, CY-15H, CY-22H, CY-30H (flange/top-hat mount) and CY-19C, CY-25C (countersunk flush mount) — with housing diameters ranging from approximately 8 mm (0.31 in) to 30 mm (1.18 in). Choose from carbon steel, engineering-grade nylon, or A2 stainless steel to match your load, environment, and corrosion requirements.
Typical use cases include DIY conveyor roller tables for woodworking shops, packing and sorting stations requiring 360° workpiece rotation, light-duty assembly jigs where parts must slide and pivot without lifting, and food-adjacent or damp environments where A2 stainless steel ball transfer units resist rust and meet hygiene expectations.
| Product Type | Ball Transfer Unit Bearing |
|---|---|
| Series / Models | CY-8H, CY-12H, CY-15H, CY-22H, CY-30H, CY-19C, CY-25C |
| Mount Style | H-series: Flange / Top-Hat | C-series: Countersunk Flush |
| Housing Diameter Range | Approx. 8 mm – 30 mm (0.31 in – 1.18 in); see variant options |
| Material Options | Carbon Steel / Engineering Nylon / A2 Stainless Steel |
| Load Ball Material | Hardened Steel (all material variants) |
| Load Capacity | See variant options |
| Operating Temperature | See variant options |
| Surface Finish | Carbon Steel: zinc-plated or plain; Nylon: natural; A2 SS: brushed |
| Pack Quantity Options | 1 / 2 / 3 / 5 / 10 / 20 pcs |
| Application | Conveyor tables, assembly jigs, sorting stations, material handling |
H-series models (CY-8H, CY-12H, CY-15H, CY-22H, CY-30H) have a flange or top-hat body that sits above the mounting surface and is secured via through-bolts or press-fit into a drilled hole. C-series models (CY-19C, CY-25C) use a countersunk body that installs flush with the work surface, leaving only the load ball protruding — ideal for flat-bed conveyor tables where a smooth surface profile is required.
Choose carbon steel for general workshop and industrial conveyor applications where load capacity is the priority and the environment is dry. Choose engineering nylon when you need a lightweight, non-marring unit that operates quietly and won't scratch delicate workpiece surfaces. Choose A2 stainless steel for damp, washdown, or food-adjacent environments where corrosion resistance is essential.
Match the housing diameter to the hole size you can drill in your table surface, and verify the load capacity against the weight of your heaviest workpiece divided by the number of ball transfer units supporting it. Larger models (CY-22H, CY-30H, CY-25C) handle heavier loads; smaller models (CY-8H, CY-12H, CY-19C) suit lighter parts and tighter grid spacing. Contact us to confirm load ratings for your specific model.
Carbon steel units are best suited for dry indoor environments. Nylon units tolerate occasional moisture but are not rated for continuous wet exposure. A2 stainless steel units are the recommended choice for damp, outdoor, or washdown environments, offering corrosion resistance suitable for food processing and marine-adjacent applications.
The number depends on your table size, grid spacing, and the weight of workpieces. A common starting point is a grid spacing of 75–150 mm (3–6 in) center-to-center. Divide the maximum workpiece weight by the per-unit load rating of your chosen model to calculate the minimum number of units required, then add a safety margin of at least 20–30%.
Yes. The H-series flange-mount units fit standard drilled holes sized to the housing body diameter of each model. The C-series countersunk units require a countersunk hole to allow flush installation. Always verify the exact hole diameter and depth for your selected model before drilling — contact us to confirm dimensions if needed.
Ball transfer units are designed primarily for vertical (downward) load bearing combined with horizontal rolling movement. They are not rated for sustained lateral or upward loads. For applications with significant side forces, consider supplementing with guide rails or selecting a larger model with a higher load rating.
