Flange Mount Ball Transfer Unit SD-30
The SD-30 is a flange mount ball transfer unit with a 30.16 mm diameter steel ball, rated for 250 kg working load and 300 kg maximum load. It is mounted through a flange onto a deck plate or workbench, allowing heavy flat items like trays to be moved and rotated in any direction by hand. The unit weighs 1.2 kg and is available with a steel, galvanized steel, chrome plated steel or stainless steel case.
Product Overview
The SD-30 is a flange mount ball transfer unit with a 30.16 mm diameter steel ball, rated for 250 kg working load and 300 kg maximum load. It is mounted through a flange onto a deck plate or workbench, allowing heavy flat items like trays to be moved and rotated in any direction by hand. The unit weighs 1.2 kg and is available with a steel, galvanized steel, chrome plated steel or stainless steel case.
Part of the SI SD Series range, used in Warehouse and Distribution Centres.
Key Benefits
- Carries 250 kg per unit in normal service and 300 kg at peak load
- Flange mount allows secure bolt-on installation and easy removal for maintenance
- 30.16 mm diameter steel ball provides stable rolling under heavy static and dynamic loads
- Steel, galvanized steel, chrome plated steel or stainless steel case options for different environmental conditions
- Two mounting screw holes in the flange ensure solid attachment to the work surface
Application Scenarios
- Transfer tables between two conveyor lines running at right angles in a warehouse or factory
- Loading and unloading stations where heavy trays or flat components need to be repositioned
- Assembly line workstations where a fixture must be rotated by hand between operations
- Packaging lines where flat products are moved and aligned on a workbench
- Processing machinery feed points where flat parts are manually guided into position
Who It Is For
- Conveyor system integrators building high-load transfer points
- Industrial equipment builders designing workbenches with manual repositioning
- Assembly line engineers needing reliable omni-directional movement for fixtures
- Material handling equipment makers integrating ball transfer units into loading tables
- Industrial distributors stocking ball transfer units by load rating and mounting type
Problems It Solves
- Heavy flat loads that stick or jam when pushed across a fixed deck plate
- Transfer points where product must change direction without powered diverters
- Manual repositioning of heavy trays or components that require rotation
- Workstations where a single unit must support both light and heavy items without failure
- Lack of consistent mounting and load rating across multiple component suppliers
Technical Features
- 30.16 mm diameter steel ball for high load capacity and durability
- Flange mount with two screw holes for secure bolt-on attachment
- Housing made from carbon steel, galvanized steel, chrome plated steel or stainless steel
- 360-degree omni-directional movement for free rotation in any direction
- Mounting diameter of 54 mm ensures compatibility with standard deck plate holes
Materials
- Carbon steel ball and case for general industrial use
- Galvanized steel case for improved corrosion resistance in damp environments
- Chrome plated steel case for enhanced wear resistance and appearance
- Stainless steel (SUS304) case for wet, washdown or corrosive areas
Quality Control
- Load capacity tested against the 250 kg working load rating
- Ball rotation checked by hand for free movement in all directions
- Material grade confirmed against the case and ball option ordered
- Flange dimensions verified to ensure 54 mm mounting diameter
Customization Options
- Case material selected between carbon steel, galvanized steel, chrome plated steel and stainless steel
- Ball material is steel, with no other options available in the current specification
- Other SD Series load ratings available where 250 kg is not the right size
Use Guide
- Divide the load by the number of units in contact to ensure each unit stays under 250 kg working load
- Keep peak and impact loading below the 300 kg maximum load figure
- Mount units on a flat deck plate so all balls sit at the same height
- Use stainless steel case where the deck is exposed to washdown or corrosive conditions
- Avoid using on surfaces with uneven or soft bottoms such as cloth-wrapped items
Specifications
| Model No | SD-30 |
|---|---|
| Mounting | Flange mount |
| Load Capacity | 250 kg |
| Max Load Capacity | 300 kg |
| Weight | 1.2 kg |
| Ball Diameter | 30.16 mm |
| Ball Material | Steel |
| Case Material | Steel, galvanized steel, chrome plated steel, stainless steel |
| Mount Diameter | 54 mm |
| Dimension | 68 x 49 mm |
Manufacturing Process
Step 1
Machining of the flange and case body
Step 2
Precision drilling and finishing of mounting holes
Step 3
Assembly of the steel ball and support components
Step 4
Final inspection of ball rotation and mounting fit
Step 5
Packaging for shipping and storage
Compared With Other Options
| Press mount ball transfer units | Flange mount bolts to the deck and can be removed for service, while a press fit unit is faster to install but harder to replace |
|---|---|
| Lower rated SD Series units | The SD-30 suits 250 kg loads, so lighter decks are better served by a smaller unit that rolls with less effort |
| Plain conveyor rollers | Ball transfer units allow movement in any direction, while rollers only move product along one axis |
Flange Mount Ball Transfer Unit SD-30 Questions
What load can one SD-30 ball transfer unit carry?
The rated load capacity is 250 kg per unit and the maximum load capacity is 300 kg.
How is the SD-30 mounted?
It is a flange mount unit, so it is bolted through the flange onto the deck plate.
Which case material should I choose?
Carbon steel for general use, galvanized steel for damp areas, chrome plated steel for wear resistance, stainless steel for washdown or corrosive environments.
Is a stainless steel version available?
Yes, the case can be supplied in stainless steel (SUS304).
How much does the unit weigh?
Each SD-30 weighs 1.2 kg, which is used for deck load and shipping calculations.
Can I get other load ratings in the same series?
Yes, the SD Series covers other load ratings, so ask for the model that matches your load per unit.
Get a Price for Flange Mount Ball Transfer Unit SD-30
Send the quantity and any material or surface option you need, and a quotation comes back against this model number.