Stud Mount Fine Machined Ball Transfer Unit D-12HAR
The D-12HAR is a stud mount fine machined ball transfer unit with a 38.1 mm diameter main ball, rated for 250 kg working load and 300 kg maximum load. It is designed to be mounted via a stud into a deck plate so that heavy trays, pallets or flat panels can be moved and rotated in any direction by hand. The unit weighs 890 g and is available with a nylon, steel or stainless steel main ball in a steel or stainless steel case.
Product Overview
The D-12HAR is a stud mount fine machined ball transfer unit with a 38.1 mm diameter main ball, rated for 250 kg working load and 300 kg maximum load. It is designed to be mounted via a stud into a deck plate so that heavy trays, pallets or flat panels can be moved and rotated in any direction by hand. The unit weighs 890 g and is available with a nylon, steel or stainless steel main ball in a steel or stainless steel case.
Part of the D Series range, used in Sheet Metal and Press Shops.
Key Benefits
- Carries 250 kg per unit in normal service and 300 kg at peak load
- Stud mount allows secure attachment to a deck plate with two threaded holes
- Fine machined ball and seat reduce rolling resistance under heavy static load
- Stainless steel ball and case option for use in wet, washdown or corrosive environments
- Nylon ball option protects painted or polished surfaces from marking
Application Scenarios
- Transfer points between two conveyor lines running at right angles where trays must be rotated
- Loading tables feeding a packaging machine or assembly station where a flat load is repositioned
- Processing workbenches where a heavy tray is manually reoriented between operations
- Feeding systems in automated lines where a flat component must be aligned in any direction
- Assembly stations where a fixture is turned by hand without requiring powered movement
Who It Is For
- Conveyor system integrators building transfer and rotation points into a line
- Material handling equipment builders constructing workbenches and loading tables
- Assembly line builders needing manual repositioning of flat components
- Industrial distributors stocking ball transfer units by load rating and mounting type
Problems It Solves
- Heavy loads that bind or jam when pushed across a fixed deck plate or plain rollers
- Transfer points where product must change direction without a powered diverter
- Operators struggling to rotate or align a heavy load by hand at the end of a line
- Mixed-duty decks where a single unit must handle both light and heavy flat items
- Mounting systems that are not secure or cannot be removed for maintenance
Technical Features
- Fine machined ball and seat rather than a pressed or stamped housing
- Stud mount with two threaded holes for secure attachment to the deck plate
- Main ball supplied in nylon, steel or stainless steel to suit the load surface
- Case supplied in steel or stainless steel for dry or wet environments
- Unit weight of 890 g for deck load and shipping calculations
Materials
- Nylon main ball for non marking contact with painted or polished surfaces
- Carbon steel ball and case for general industrial decks
- Stainless steel ball and case for wet, washdown or corrosive areas
Quality Control
- Load capacity checked against the 250 kg rating before packing
- Ball rotation checked by hand for free movement in all directions
- Material grade confirmed against the ball and case option ordered
Customization Options
- Ball material selected between nylon, steel and stainless steel
- Case material selected between steel and stainless steel
- Other D 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 check the 250 kg per unit rating
- 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
- Choose the nylon ball where the load surface must not be marked
- Choose stainless steel ball and case where the deck is washed down
Specifications
| Model No | THD-12HAR |
|---|---|
| Mounting | Stud mount |
| Load Capacity | 250 kg |
| Max Load Capacity | 300 kg |
| Weight | 890 g |
| Ball Diameter | 38.1 mm |
| Mount Diameter | 52 mm |
| Dimensions | 70 x 70 x 82 mm |
| Ball Material | Nylon, steel or stainless steel |
| Case Material | Steel or stainless steel |
Manufacturing Process
Step 1
Machining of the case and ball seat
Step 2
Ball and support ball assembly
Step 3
Stud drilling and threading
Step 4
Load check and packing
Compared With Other Options
| Flange mount ball transfer units | Stud mount bolts into the deck and allows removal for service, while a flange mount is fixed from above and harder to replace |
|---|---|
| Lower rated D Series units | The D-12HAR 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 |
Stud Mount Fine Machined Ball Transfer Unit D-12HAR Questions
What load can one D-12HAR ball transfer unit carry?
The rated load capacity is 250 kg per unit and the maximum load capacity is 300 kg.
How is the D-12HAR mounted?
It is a stud mount unit, so it is bolted into the deck plate using two threaded holes in the stud.
Which ball material should I choose?
Nylon for surfaces that must not be marked, carbon steel for general use and stainless steel for wet or washdown areas.
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 D-12HAR weighs 890 g, which is used when calculating deck weight and shipping.
Can I get other load ratings in the same series?
Yes, the D Series covers other load ratings, so ask for the model that matches your load per unit.
Get a Price for Stud Mount Fine Machined Ball Transfer Unit D-12HAR
Send the quantity and any material or surface option you need, and a quotation comes back against this model number.