Flange Mount Ball Transfer Unit SD-12
The SD-12 is a flange mount ball transfer unit with a 12 mm diameter steel ball, rated for 15 kg working load and 20 kg maximum load. It bolts through a flange onto a worktable or deck plate so that a flat, smooth object like a tray can be pushed and rotated in any direction by hand. The unit weighs 180 g and is available with a steel, galvanized steel, chrome plated steel or stainless steel case.
Product Overview
The SD-12 is a flange mount ball transfer unit with a 12 mm diameter steel ball, rated for 15 kg working load and 20 kg maximum load. It bolts through a flange onto a worktable or deck plate so that a flat, smooth object like a tray can be pushed and rotated in any direction by hand. The unit weighs 180 g 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 15 kg per unit in normal service and 20 kg at peak load
- Flange mount fixes the unit from above so the deck plate needs only a clearance hole
- 12 mm diameter steel ball provides stable rolling under light to moderate load
- Steel case with galvanization or chrome plating resists wear in industrial environments
- Stainless steel case option for wet or corrosive areas
Application Scenarios
- Transfer tables between two conveyor lines running at right angles
- Assembly stations where a tray or flat component is rotated by hand
- Feeding systems in packaging machinery where trays move between stations
- Processing tables where flat parts are repositioned without powered movement
- Workbenches with curved sections where objects need omnidirectional movement
Who It Is For
- Conveyor system integrators building transfer points into a line
- Material handling equipment builders constructing worktables and feeding systems
- Industrial distributors stocking ball transfer units by load rating
- Assembly line builders needing low-load rotation points for trays or fixtures
- Packaging machinery makers integrating manual repositioning into their systems
Problems It Solves
- Flat trays or components that jam when pushed across a fixed deck plate
- Transfer points where product must change direction without a powered diverter
- Operators struggling to rotate a tray by hand at the end of a line
- Worktables with uneven or soft-bottomed items that cannot be moved reliably
- Need for a compact, fixed mounting solution that allows 360 degree movement
Technical Features
- 12 mm diameter steel ball for consistent rolling under light load
- Flange mount with two screw holes for secure attachment to a deck plate
- Main ball made from carbon steel for durability in dry environments
- Case available in carbon steel, galvanized steel, chrome plated steel or stainless steel
- Unit weight of 180 g for deck load and shipping calculations
Materials
- Carbon steel ball and case for general industrial use
- Galvanized steel case for improved corrosion resistance in humid areas
- Chrome plated steel case for wear resistance and a smoother finish
- Stainless steel (SUS304) case for wet, washdown or food handling environments
Quality Control
- Load capacity verified against the 15 kg rating before packing
- Ball rotation checked by hand for free movement in all directions
- Material grade confirmed against the case and ball option ordered
- Flange hole alignment checked for proper bolt fit
Customization Options
- Case material selected between carbon steel, galvanized steel, chrome plated steel and stainless steel
- Ball material is steel, as standard; other materials not available in this model
- Other SD Series load ratings available where 15 kg is not the right size
Use Guide
- Divide the load by the number of units in contact to check the 15 kg per unit rating
- Keep peak and impact loading below the 20 kg maximum load figure
- Mount units on a flat deck plate so all balls sit at the same height
- Choose stainless steel case where the deck is washed down or exposed to moisture
- Use only on flat, smooth surfaces such as trays; avoid soft or uneven bottoms
Specifications
| Model No | SD-12 |
|---|---|
| Mounting | Flange mount |
| Load Capacity | 15 kg |
| Max Load Capacity | 20 kg |
| Weight | 180 g |
| Ball Diameter | 12 mm |
| Ball Material | Steel |
| Case Material | Carbon steel, galvanized steel, chrome plated steel, stainless steel (SUS304) |
| Mount Diameter | 35 mm |
| Dimensions | 45 x 23 mm (Diameter x Height) |
Manufacturing Process
Step 1
Machining of the flange and case body
Step 2
Assembly of the 12 mm steel ball and support bearings
Step 3
Drilling and finishing of the flange mounting holes
Step 4
Material selection based on order specification
Step 5
Load check and final packing
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 |
|---|---|
| Higher rated SD Series units | The SD-12 suits 15 kg loads, so heavier decks are better served by a larger unit with higher load capacity |
| 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-12 Questions
What load can one SD-12 ball transfer unit carry?
The rated load capacity is 15 kg per unit and the maximum load capacity is 20 kg.
How is the SD-12 mounted?
It is a flange mount unit, so it is bolted through the flange onto the deck plate rather than pressed into a hole.
Which case material should I choose?
Carbon steel for general use, galvanized steel for humid areas, chrome plated steel for wear resistance, and stainless steel (SUS304) for wet or washdown 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-12 weighs 180 g, which is used when calculating deck weight and shipping.
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-12
Send the quantity and any material or surface option you need, and a quotation comes back against this model number.