Press Mount Machined Ball Transfer Unit SP-25
The SP-25 is a press mount machined ball transfer unit with a 25.4 mm diameter steel, stainless steel or nylon main ball, rated for 180 kg working load and 200 kg maximum load. It is designed to be pressed into a hole in a flat deck plate so that a tray, panel or sheet can be moved in any direction by hand. The unit weighs 190 g and is available with carbon steel, galvanized steel, chrome plated steel or stainless steel case and ball options.
Product Overview
The SP-25 is a press mount machined ball transfer unit with a 25.4 mm diameter steel, stainless steel or nylon main ball, rated for 180 kg working load and 200 kg maximum load. It is designed to be pressed into a hole in a flat deck plate so that a tray, panel or sheet can be moved in any direction by hand. The unit weighs 190 g and is available with carbon steel, galvanized steel, chrome plated steel or stainless steel case and ball options.
Part of the SP Series range, used in Warehouse and Distribution Centres.
Key Benefits
- Carries 180 kg per unit in normal service and 200 kg at peak load
- Press mount fits into a drilled hole in the deck plate for a flush, stable installation
- Fine machined ball and seat allow smooth movement under heavy static load
- Steel, stainless steel or nylon ball options suit different surface protection needs
- Carbon steel, galvanized, chrome plated or stainless steel case options for different environments
Application Scenarios
- Transfer points between two straight conveyor lines where product must change direction
- Feeding tables for packaging machinery where trays are manually repositioned
- Processing workstations where flat panels are rotated or aligned by hand
- Assembly line stations where a fixture is turned between operations
- Curved sections on router tables or band saws where omnidirectional movement is needed
Who It Is For
- Conveyor system integrators building transfer and rotation points into a line
- Material handling equipment builders constructing flat decks and worktables
- Industrial distributors stocking ball transfer units by load rating and mounting type
- Assembly line and production line builders needing consistent, reliable transfer points
- Packaging machinery builders requiring low-friction movement for trays and containers
Problems It Solves
- Heavy loads that bind or jam when pushed across a fixed deck plate
- Transfer points where product must change direction without powered diverters
- Operators struggling to move or align a tray or panel by hand at the end of a line
- Mixed-use decks where a single unit must handle both light and heavy items
- Need for a flush, stable mounting that does not interfere with product movement
Technical Features
- 25.4 mm diameter main ball for consistent contact with flat, smooth surfaces
- Press mount design with a 38 mm mounting diameter for secure fit into a deck hole
- Fine machined ball seat and case to maintain alignment under load
- Two screw holes in the bearing surround for optional attachment to the deck
- Unit weight of 190 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 environments
- Chrome plated steel case for wear resistance and a smoother surface
- Stainless steel ball and case for washdown, food handling or corrosive areas
- Nylon ball for non-marking contact with painted or polished surfaces
Quality Control
- Load capacity verified against the 180 kg working load before packing
- Ball rotation checked by hand for free movement in all directions
- Material grade confirmed against the ball and case option ordered
- Press fit verified to ensure the unit seats flush in the deck hole
- Dimensions checked against the 45 mm x 31 mm specification
Customization Options
- Ball material selected between steel, stainless steel and nylon
- Case material selected between carbon steel, galvanized steel, chrome plated steel and stainless steel
- Other SP Series load ratings available where 180 kg is not the right size
Use Guide
- Divide the load by the number of units in contact to check the 180 kg per unit rating
- Keep peak and impact loading below the 200 kg maximum load figure
- Press the unit into a hole drilled to the 38 mm mounting diameter for a secure fit
- Choose the nylon ball where the load surface must not be marked
- Choose stainless steel ball and case where the deck is washed down or exposed to moisture
Specifications
| Model No | SP-25 |
|---|---|
| Mounting | Press mount |
| Load Capacity | 180 kg |
| Max Load Capacity | 200 kg |
| Weight | 190 g |
| Ball Diameter | 25.4 mm |
| Mounting Diameter | 38 mm |
| Ball Material | Steel, stainless steel, nylon |
| Case Material | Steel & galvanized, steel & chrome plated, stainless steel |
| Dimensions | 45 mm x 31 mm |
Manufacturing Process
Step 1
Machining of the case and ball seat to precise dimensions
Step 2
Assembly of the main ball and support bearings
Step 3
Press fit of the unit into a test hole to verify fit and alignment
Step 4
Load check against the 180 kg working load rating before packing
Step 5
Final inspection and packaging
Compared With Other Options
| Flange mount ball transfer units | Press mount fits into a hole and is flush with the deck, while flange mount bolts from above and protrudes slightly |
|---|---|
| Lower rated SP Series units | The SP-25 suits 180 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 |
Press Mount Machined Ball Transfer Unit SP-25 Questions
What load can one SP-25 ball transfer unit carry?
The rated load capacity is 180 kg per unit and the maximum load capacity is 200 kg.
How is the SP-25 mounted?
It is a press mount unit, so it is pressed into a drilled hole in the deck plate.
Which ball material should I choose?
Steel for general use, stainless steel for wet or corrosive areas, nylon to protect painted or polished surfaces.
Is a stainless steel version available?
Yes, both the ball and the case can be supplied in stainless steel.
How much does the unit weigh?
Each SP-25 weighs 190 g, which is used when calculating deck weight and shipping.
Can I get other load ratings in the same series?
Yes, the SP Series covers other load ratings, so ask for the model that matches your load per unit.
Get a Price for Press Mount Machined Ball Transfer Unit SP-25
Send the quantity and any material or surface option you need, and a quotation comes back against this model number.