Flange Mount Ball Transfer Unit SD-25
The SD-25 is a flange mount ball transfer unit with a 25.4 mm diameter steel ball, rated for 150 kg working load and 200 kg maximum load. It is designed to be bolted through a flange onto a deck plate or workbench, allowing flat, smooth objects like trays to be moved and rotated in any direction by hand. The unit weighs 490 g and is available with a steel, galvanized steel, chrome-plated steel, or stainless steel case.
Product Overview
The SD-25 is a flange mount ball transfer unit with a 25.4 mm diameter steel ball, rated for 150 kg working load and 200 kg maximum load. It is designed to be bolted through a flange onto a deck plate or workbench, allowing flat, smooth objects like trays to be moved and rotated in any direction by hand. The unit weighs 490 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 150 kg per unit in normal service and 200 kg at peak load
- Flange mount allows secure attachment and easy removal for maintenance
- 25.4 mm diameter ball provides stable rolling under heavy static and dynamic loads
- Steel or stainless steel case options suit dry, wet or washdown environments
- Two mounting screw holes ensure solid attachment to worktables and benches
Application Scenarios
- Transfer points between two conveyor lines running at right angles
- Loading tables feeding automated machinery where product rotation is needed
- Assembly stations requiring manual repositioning of flat components
- Packaging lines where trays or containers must be rotated for labeling or filling
- Workbenches in processing or feeding systems where items are reoriented by hand
Who It Is For
- Conveyor system integrators building transfer and rotation points
- Material handling equipment builders designing worktables and decks
- Industrial distributors stocking ball transfer units by load and mounting type
- Manufacturers of processing and packaging machinery needing auxiliary movement points
Problems It Solves
- Heavy flat items that cannot be rotated or repositioned on fixed rollers
- Transfer points where product must change direction without powered diverters
- Workbenches where operators struggle to push or align heavy trays by hand
- Systems requiring consistent load capacity across multiple transfer units
- Need for a single supplier for flange mount units with matching shaft and diameter
Technical Features
- 25.4 mm diameter steel ball for high load capacity and durability
- Flange mount with two screw holes for secure attachment to deck plates
- Steel case with optional galvanization, chrome plating or stainless steel finish
- 200 kg maximum load capacity for short-term peak or impact loading
- Compact dimensions of 57 x 41 mm for integration into tight spaces
Materials
- Carbon steel ball and case for general industrial use
- Galvanized steel case for improved corrosion resistance in humid environments
- Chrome-plated steel case for enhanced wear and appearance
- Stainless steel (SUS304) case for wet, washdown or food handling applications
Quality Control
- Load capacity verified against the 150 kg working load rating
- Ball rotation checked by hand for free movement in all directions
- Material grade confirmed against the case option ordered
Customization Options
- Case material selected between carbon steel, galvanized steel, chrome-plated steel, and stainless steel (SUS304)
- Other SD Series load ratings available where 150 kg is not the right size
- Mounting diameter and flange configuration maintained to match standard deck plate holes
Use Guide
- Divide the total load by the number of units in contact to ensure no unit exceeds 150 kg working load
- Keep peak or impact loading below the 200 kg maximum load figure
- Mount units on a flat, rigid deck plate so all balls sit at the same height
- Choose stainless steel case for wet, washdown or corrosive environments
- Use only on flat, smooth surfaces such as trays; do not use on uneven or soft-bottomed items
Specifications
| Model No | SD-25 |
|---|---|
| Mounting | Flange mount |
| Load Capacity | 150 kg |
| Max Load Capacity | 200 kg |
| Weight | 490 g |
| Ball Diameter | 25.4 mm |
| Ball Material | Steel |
| Case Material | Steel, galvanized steel, chrome-plated steel, stainless steel (SUS304) |
| Mount Diameter | 45 mm |
| Dimensions | 57 x 41 mm |
Manufacturing Process
Step 1
Machining of the flange and case body
Step 2
Assembly of the steel ball and support components
Step 3
Drilling and finishing of the mounting holes
Step 4
Final inspection and packing
Compared With Other Options
| Press mount ball transfer units | Flange mount allows removal and replacement without damaging the deck, while press fit units are faster to install but harder to service |
|---|---|
| Lower rated SD Series units | The SD-25 suits 150 kg loads, so lighter applications are better served by a smaller unit with lower rolling resistance |
| 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-25 Questions
What load can one SD-25 ball transfer unit carry?
The rated load capacity is 150 kg per unit and the maximum load capacity is 200 kg.
How is the SD-25 mounted?
It is a flange mount unit, so it is bolted through the flange onto the deck plate using two screw holes.
Which case material should I choose?
Carbon steel for general use, galvanized for humidity resistance, chrome-plated for wear and appearance, stainless steel (SUS304) for wet or washdown areas.
Is a stainless steel version available?
Yes, the case can be supplied in stainless steel (SUS304).
How much does the unit weigh?
Each SD-25 weighs 490 g, which is used for deck load and shipping calculations.
Can I get other load ratings in the same series?
Yes, the SD Series includes other load ratings, so ask for the model that matches your load per unit.
Get a Price for Flange Mount Ball Transfer Unit SD-25
Send the quantity and any material or surface option you need, and a quotation comes back against this model number.