The chain is fine...but I ordered the wrong size. Nine links of the chain I ordered equals six of the size I wanted. My error...
How can I straighten out the springs? I can't use them coil uo as is.
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Get fitment advice & recommendations
When a fixed-direction caster just won't cut it — whether you're routing parts along an assembly table, staging heavy totes on a packing bench, or building a gravity conveyor — a ball transfer unit gives you the 360° freedom of movement that keeps workflows moving. Fabricators, warehouse operators, and DIY builders alike rely on these ball casters to eliminate manual repositioning and reduce friction-related fatigue on the line.
Each ball transfer unit consists of a hardened load-bearing ball seated in a precision-formed housing, supported by a ring of smaller recirculating balls beneath. Available in carbon steel, nylon, and stainless steel housings, with models ranging from CY-8H (8 mm / 0.31 in ball diameter) up to CY-40F (40 mm / 1.57 in ball diameter). Housing styles include flanged (H), angle-mount (A), bolt-down (B), dome (D), flat-top (F), and tee-base (T / TB) configurations to suit varied mounting surfaces.
Typical use cases include gravity-fed conveyor roller tables for carton sorting, ball transfer tables for sheet metal or glass panel positioning, and under-bench slide systems for tool drawers and equipment staging. Long-tail applications: ball caster for conveyor line, 360 degree swivel transfer unit, multi-directional roller bearing caster for workbench.
The recirculating ball design allows loads to glide in any horizontal direction with minimal effort — no pivoting, no re-alignment needed.
Carbon steel for general-duty indoor use, nylon for lightweight or noise-sensitive environments, and stainless steel for corrosion-exposed or washdown applications.
Ball diameters from 8 mm (0.31 in) to 40 mm (1.57 in) cover light parcel handling through heavy panel or sheet stock transfer.
Flanged (H), angle (A), bolt-down (B), dome (D), flat-top (F), and tee-base (T/TB) housings let you match the unit to your frame or table surface without custom fabrication.
The main transfer ball is hardened for wear resistance, maintaining smooth rolling performance under repeated cycling and sustained static loads.
Model codes follow industry-standard CY-series dimensions, making these units straightforward replacements for worn units on existing conveyor or transfer table frames.
| Product Type | Ball Transfer Unit (Ball Caster) |
|---|---|
| Ball Diameter Range | 8 mm – 40 mm (0.31 in – 1.57 in) |
| Housing Materials | Carbon Steel / Nylon / Stainless Steel |
| Mounting Styles | Flanged (H), Angle (A), Bolt-Down (B), Dome (D), Flat-Top (F), Tee-Base (T/TB) |
| Load Capacity | See variant options |
| Housing Finish | See variant options |
| Thread / Stem Size | See variant options |
| Overall Height | See variant options |
| Quantity per Order | 1 pcs (per variant) |
| Application | Conveyor tables, assembly benches, transfer tables, material handling |
Match the ball diameter to your load weight and table spacing. Smaller balls (CY-8H, CY-12H) suit light parcels and small parts up to a few kilograms. Larger balls (CY-25 and above) handle heavier sheet stock, panels, or totes. As a general rule, use a closer grid spacing with smaller balls for fragile or thin workpieces to prevent tipping.
The letter suffix indicates the mounting configuration: H = flanged top-mount (bolts through a flange around the housing), A = angle-bracket mount, B = bolt-down base, D = dome-shaped low-profile housing, F = flat-top wide-flange, T = tee-base, TB = tee-base with bolt pattern. Choose based on your frame geometry and whether you need flush, recessed, or surface mounting.
Carbon steel is the standard choice for dry indoor environments where cost efficiency matters. Nylon housings are lighter, quieter, and resist mild moisture, making them suitable for food-adjacent or noise-sensitive areas. Stainless steel is recommended for wet, humid, or chemically exposed environments where corrosion resistance is a priority.
Yes. The recirculating ball design is engineered for repeated cycling. For continuous conveyor applications, ensure the load per unit stays within the rated capacity for your chosen model, and space units closely enough that the workpiece is always supported by at least three units simultaneously to prevent rocking.
These units follow standard CY-series dimensional conventions, so they are generally drop-in compatible with frames designed for CY-series ball transfer units. Always verify the housing outer diameter, flange bolt pattern, and overall height against your frame's mounting holes before ordering.
For carbon steel units, periodically apply a light machine oil to the ball and housing to prevent surface oxidation and maintain smooth rolling. Nylon units can be wiped clean with a damp cloth. Stainless steel units tolerate water rinse-down; avoid abrasive cleaners that could score the ball surface. Replace any unit showing flat spots, rough rolling, or visible corrosion on the load ball.
Ball transfer units are designed for horizontal or near-horizontal surfaces. On inclined surfaces, loads will tend to roll downhill under gravity, which may be intentional for gravity-fed conveyor designs. For inclined use, confirm the load capacity rating applies at the angle of use, and consider adding end stops or guides to control travel direction.