Starting friction of Ball Transfers
The data below was obtained by testing the mechanical resistance of four IS-51 ball-up castor type catalog model ball transfers conveying 1000 kg load. To compare and consider various articles, we measured on raw SS steels (mill scale and polished), and hardened (SK steel, hardness HRC60, polished).
As shown in the chart below, the harder the runway surface is the smoother the article conveyed. For not-hardened steel, or black scale applications please contact our sales.
| Material | SS Steel | SK Steel HRC60Ëš Polished | |
|---|---|---|---|
| Black Scale | Polished | ||
| Resistance | 0.03~0.05 | 0.02~0.035 | 0.01~0.015 |
Determining the load for a Ball Transfer unit
ISB ball transfers come into two categories, pressed and molded type for light load, and precision-machined type for heavy loads. When considering ball transfers for an application, the border line for light/heavy loads are approx. 500 kg. Equal load distribution over many ball transfers is seldom, if ever achieved. Load distribution is governed by the flatness, hardness and smoothness of the load surface in contact with the balls and the ball transfer installation height variance and system deflection. Absolute flatness of the application design is difficult to insure under field service conditions.
To determine the load rating required per units simply divide the ball transfer load capacity by 2 for pressed and molded products and 2/3 for machine-cut products.
Ball transfer variation
Material
On heavy load ball transfer, large and small balls are made of bearing steel, bowl is made of chrome steel. Stainless steel for rust, lightweight aluminum and various kinds of engineering plastics are available.
Sizes
Miniature size ball diameter 5mm (IS-05N, IS-05SN) and over 150 mm diameter large ball (IS-150) is also available. By combining different material and sizes, we select a ball transfer based on load size, material, speed, environment, and other conditions. In addition, we can customize and create special products for your application. For more information, please contact our sales.
Ball transfer applications
Applications
- Factory manufacturing lines
- Port facilities
- Multi layer parking lots
- Nuclear facilities
- Nuclear reprocessing facilities
- Garbage disposal facilities
- Under office floors and buildings
- Semiconductor FPD
- Medical Labs
ISB ball transfers are used in a wide range of applications to provide basic support to today's society.
Ball Transfer surface finishing
| Type | Surface Finishing (1) | Surface Finishing (2) | Surface Finishing (3) | |||
| IS-10 | Cap | Nickel Plating | ||||
| IS-13 | Cap | Nickel Plating | ||||
| IS-19 | Cap | Nickel Plating | ||||
| IS-25 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| IS-38 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| IS-51 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| IS-76 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| IS-100 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| IS-127 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| IS-150 | Cap , Grease Nipple | Nickel Plating | Washer | Trivalent Chromate | Screw | Blackening |
| IS-05N | Cap | Nickel Plating | ||||
| IS-06N | Cap | Nickel Plating | ||||
| IS-08N | Cap | Nickel Plating | ||||
| IS-10N | Cap | Nickel Plating | Set Screw | Blackening | ||
| IS-13N | Cap | Nickel Plating | Set Screw | Blackening | ||
| IS-16N | Cap | Nickel Plating | ||||
| IS-19N | Cap | Nickel Plating | Set Screw | Blackening | ||
| IS-25N | Cap | Nickel Plating | Set Screw | Blackening | ||
| IS-38N | Cap | Nickel Plating | Set Screw | Blackening | ||
| IS-10B | Cap , Body | Nickel Plating | ||||
| IS-13B | Cap , Body | Nickel Plating | ||||
| IS-19B | Cap , Body | Nickel Plating | ||||
| IS-25B | Cap , Body | Nickel Plating | ||||
| IS-38B | Cap , Body | Nickel Plating | ||||
| IS-10BF | Cap , Body , Flange | Nickel Plating | ||||
| IS-13BF | Cap , Body , Flange | Nickel Plating | ||||
| IS-19BF | Cap , Body , Flange | Nickel Plating | ||||
| IS-25BF | Cap , Body , Flange | Nickel Plating | ||||
| IS-38BF | Cap , Body , Flange | Nickel Plating | ||||
| IS-14BM | Cap , Bolt | Nickel Plating | Screw | Trivalent Chromate | ||
| IS-19BM | Cap , Bolt | Nickel Plating | Screw | Trivalent Chromate | ||
| IS-19BK-05 | Cap | Nickel Plating | Nut | Trivalent Chromate | ||
| IS-25BK-08 | Cap | Nickel Plating | Nut | Trivalent Chromate | ||
| IS-25BK-20 | Cap | Nickel Plating | Nut | Trivalent Chromate | Spring | Painting |
| S-05 | Cap | Nickel Plating | ||||
| S-06 | Cap | Nickel Plating | ||||
| S-08 | Cap | Nickel Plating | ||||
| S-10 | Cap | Nickel Plating | ||||
| S-13 | Cap | Nickel Plating | ||||
| S-22 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| S-25 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| S-38 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| S-51 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| S-76 | Cap | Nickel Plating | Screw | Trivalent Chromate | ||
| IA-19 | Snap Ring | Nickel Plating | Body | Alumite | ||
| IA-25 | Snap Ring | Nickel Plating | Body | Alumite | ||
| IA-38 | Snap Ring | Nickel Plating | Body | Alumite | ||
| IA-19R | Snap Ring | Nickel Plating | Body | Alumite | ||
| IA-25R | Snap Ring | Nickel Plating | Body | Alumite | ||
| IA-38R | Snap Ring | Nickel Plating | Body | Alumite | ||
| IM-16 | Cap , Plate | Trivalent Chromate | ||||
| IM-25 | Cap , Plate | Trivalent Chromate | ||||
| IM-25N | Cap , Plate | Trivalent Chromate | ||||
| US-16 | Cap , Plate | Trivalent Chromate | ||||
| US-25 | Cap , Plate | Trivalent Chromate | ||||
| US-25N | Cap , Plate | Trivalent Chromate | ||||
| IB-19 | Cap , Plate | Nickel Plating | ||||
| IB-25 | Cap , Plate | Nickel Plating | ||||
| IBU-900-75 | (US-25) | Base | Painting | Screw | Trivalent Chromate | |
| IBU-900-100 | (US-25) | Base | Painting | Screw | Trivalent Chromate | |
| IBT-600-75 | (IM-25) | Base | Painting | Screw | Trivalent Chromate | |
| IBT-600-100 | (IM-25) | Base | Painting | Screw | Trivalent Chromate | |
| UF-88 | Cap , Body | Nickel Plating | Nut | Trivalent Chromate | ||
| UF-110 | Cap , Body , Snap Ring | Nickel Plating | Unit | Alumite | Screw | Trivalent Chromate |
| IJH-19 | Snap Ring | Nickel Plating | ||||
| IJH-25 | Snap Ring | Nickel Plating | ||||
| IJH-38 | Snap Ring | Nickel Plating | ||||
| IJP-19 | Snap Ring | Nickel Plating | ||||
| IJP-25 | Snap Ring | Nickel Plating | ||||
| IJP-38 | Snap Ring | Nickel Plating | ||||
| IK-19 | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-22 | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-25 | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-38 | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-51 | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-76 | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-100 | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-127 | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-19N | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-22N | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-25N | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-38N | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-51N | Body , Cap , Snap Ring | Nickel Plating | ||||
| IK-13NM | Cap | Nickel Plating | ||||
| IK-16NM | Cap | Nickel Plating | ||||
| IK-19NM | Body , Cap | Nickel Plating | ||||
| IK-22NM | Body , Cap | Nickel Plating | ||||
| IK-25NM | Body , Cap | Nickel Plating | ||||
| IRT-300 | Table , Base , Snap Ring , Shaft | Nickel Plating | Screw | Trivalent Chromate | ||
| IRT-400 | Table , Base , Snap Ring , Shaft | Nickel Plating | Screw | Trivalent Chromate | ||
| IRT-500 | Table , Base , Snap Ring , Shaft | Nickel Plating | Screw | Trivalent Chromate | ||
| IR-100 | Case , Roller , Shaft , Snap Ring | Nickel Plating | ||||
| IR-125 | Case , Roller , Shaft , Snap Ring | Nickel Plating | ||||
| IR-150 | Case , Roller , Shaft , Snap Ring | Nickel Plating | ||||