Bulk Material Dispenser:
Sand, Gravel & Chippings in Self-Service
The promix bulk material dispenser handles the weighing and loading of construction materials in a fully automated manner. Your customers select the material and quantity, and the loading belt fills the vehicle with batch precision. As the operator, you reduce personnel costs and can offer bulk materials outside your regular business hours.
How the promix Bulk Material Dispenser Works
With the promix bulk material dispenser, you automate the sale of small quantities of bulk materials such as sand, gravel, chippings, or aggregates. The modular system handles the entire process—from ticket verification through precise weighing to rapid loading. This provides your customers with a convenient, secure, and 24/7 available self-service process while significantly reducing your own personnel and administrative costs.
- Modular design with 1-4 material bunkers and up to 40m³ capacity
- Precise weighing from 100–1,000 kg per batch
- Flexible loading via 7m or 10m loading belt, hydraulic height adjustment for the 10m belt
- Fully automatic process and system control with QR code
- Transparent management of all tickets, collections, and credit movements
- Self-service via SB terminal (freely positionable up to 20m distance)
- Safety concept for 24/7 operation
- Fill level indicator with email notification
Performance Features of the Bulk Material Dispenser
The promix bulk material dispenser combines modular design with precise weighing and fully automatic QR code control.
Technical Data
| Installation area | approx. 120m² (four bunkers, 10 m loading belt) |
| Material bunker capacity | 10m³ per bunker |
| Total capacity | up to 40 m³ |
| Material bunker filling width | 3,200 mm |
| Material bunker filling height | 2,550 mm |
| Weighing | from 100–1,000 kg / batch |
| Power connection | 63A / 400 V |
| Options | Vibrator, camera system, payment terminal, and more |
Optional Accessories for the Bulk Material Dispenser
The promix bulk material dispenser has a modular design and can be specifically expanded with optional accessories. Depending on the operating model and site requirements, the following options are available:
Payment Terminal
Customers select the product and quantity directly at the terminal, pay by debit/credit card or Apple Pay, and receive a QR code for immediate loading—completely without staff involvement. As a full-featured SB terminal with extended functionality, we recommend the promix SB payment terminal.
Vibrator for Material Bunkers
Prevents material bridging with moist or heavy bulk materials such as sand or chippings—increases operational reliability and reduces manual interventions.
Camera System
Monitors the bulk material dispenser and the loading area via video recording—useful for systems in 24/7 operation without permanent staff presence.
- Construction Companies
- Gravel and Sand Works
- Construction Material Retailers
- Concrete and Mixing Plants
- Recycling Operations
- Recycling Centers / Municipal Operations
Target Groups: Which Industries Is the Bulk Material Dispenser Suitable For?
The bulk material dispenser is particularly in demand among construction material retailers, gravel and sand works, and in the municipal sector—wherever small quantities of sand, gravel, or chippings are to be sold without staff involvement.
Flexible Ticket Systems for Every Customer Type
The promix management software supports three ticket types for the bulk material dispenser. Collections, credit movements, and ticket usage are automatically recorded and can be retrieved as statistics at any time.
Single-Use Tickets
For spontaneous customers—immediately usable without registration.
Ideal for regular customers who want to collect in self-service around the clock.
Customers load credit and use it flexibly for multiple collections.
For walk-in customers without a ticket—select product and quantity at the terminal, pay by debit card or Apple Pay, and receive a QR code. Available with the promix concrete dispenser.
Would you like to sell bulk materials fully automatically in self-service?
We will advise you on the purchase and configuration of your bulk material dispenser and prepare an individual offer for you.
FAQs - Frequently Asked Questions
Is a building permit required?
A building permit is recommended and required in most cases. We recommend clarifying this early with the relevant authority.
How much space is required for the system?
With four material bunkers and a 10-m loading belt, the installation area is approximately 120 m².
What type of surface should be prepared for installing the system?
The cleanest solution is a paved or concrete base plate.
What electrical connection is required?
The bulk material dispenser requires a 63-A connection at 400 V.
How large are the material bunkers?
Each bunker holds 10 m³. The system can be configured with 1 to 4 bunkers—at full capacity, this results in a total capacity of up to 40 m³.
Are single-chamber bunkers also available?
Yes, promix also has single-chamber bunkers in its portfolio.
How does the customer order bulk material?
The management software supports three ticket types: single-use tickets for spontaneous customers, invoice tickets for regular customers, and credit tickets with rechargeable credit for multiple collections. Optionally, the SB payment terminal can be added for cashless payment.
Can the customer pay by card?
Yes—with the optional promix SB payment terminal, customers pay contactlessly by debit card, Mastercard, or Apple Pay.
Can the system be operated in winter?
Yes, the bulk material dispenser can also be operated in winter, as no water is used in the process. Electronics and controls are housed in a protected control cabinet.
How often does the system need to be serviced?
Professional maintenance by our service technicians should be performed once a year. In addition, there is a maintenance plan with regular checkpoints that the operator can perform independently.
Is remote maintenance available?
Yes, all promix systems are equipped with remote maintenance as standard. This allows our technicians to respond quickly to malfunctions without having to be on site.