Conveyor system maintenance, material flow solutions and dust suppression systems for the bulk solids industry
Im-Hof AG
Kaisten (AG) · Apples (VD)New on Amplifa
About Im-Hof AG
Im-Hof AG is an independent Swiss family-owned company with over 140 years of history and more than 20 employees, specializing in conveyor technology and dust suppression. Its offering includes maintenance of conveyor systems with condition monitoring, replacement and installation of conveyor belts (including vulcanization, endless lengths from 12 to 480 m), overhaul of pulleys, drum motors and rollers, pulley lagging, and installation of air cannon systems for material flow. As the exclusive partner for Switzerland, the company distributes and installs PUCEST® polyurethane wear protection components and, as a competence center, implements dust suppression systems of the watomizer® brand — from analysis and planning through installation to turnkey handover and maintenance on a subscription basis. Its own workshop manufactures items including transfer chutes, chassis extensions and linings made of steel, stainless steel and rubber. Key customers come from building materials manufacturing, recycling, waste management, gravel and concrete plants, tunnel construction and hydropower. Head office and workshop are located in Kaisten (AG), with a second site in Apples (VD) serving the Romandie.
- Site
- Kaisten
- Processes
- Assembly of conveyor belts (including vulcanization), Installation of rollers, pulleys and motors, Pulley lagging (rubber coating), Overhaul of drum motors, rollers and pulleys, Assembly of wear protection components (PUCEST®), Assembly of air cannon systems (material flow), Lining of chutes and washing drums, Installation of dust suppression systems (stationary, water mist/nozzle spray)
- Materials
- PUCEST® (polyurethane wear protection), Rubber (conveyor belts, membranes, wear protection), Stainless steel 316, Stainless steel, Cast iron, Aluminum (perforated plate), Steel (perforated plate), Carbide (scraper segments)
- Certificates
- SUVA guidelines / material standards
- Employees
- more than 20
- Industries
- Building materials manufacturing, Recycling, Waste management, Gravel and concrete plants, Quarries, Wood processing / waste wood recycling
- 01
On-site analysis (dust sources, system condition)
- 02
Consulting and planning / project management
- 03
Procurement and in-house production of components
- 04
Assembly and installation (belts, vulcanization, air cannons, nozzle spray
- 05
Commissioning and fine-tuning
- 06
Condition monitoring and maintenance subscription
- 07
Spare parts warehouse and service
Materials and Processes
PUCEST® Polyurethane (65°Sh / 85°Sh)
Highly wear-resistant wear protection for conveyor and mixing plants, mounted as plates with aluminum or steel perforated backing.
Rubber (40° Shore, fabric-reinforced)
Conveyor belts, linings, rubber membranes for hose weirs and chutes.
Stainless steel 316
Claddings, bearing sleeves and components as dirt protection in conveyor systems.
Steel (perforated plate, chutes, chassis)
In-house production of transfer chutes, chutes and chassis extensions.
Cast iron
End covers of drum motors.
Aluminum (perforated plate)
Backing layer for PUCEST® plates in heavily stressed plant components.
Carbide (hard metal)
Scraper segments for belt cleaning with high cleaning effect.
PU (scraper)
Head scraper blades for belt-friendly cleaning of conveyor belts.
Carbide (hard metal)
Wear-resistant scraper segments with Twist-Swing® technology for slag processing.
watomizer® dust suppression technology
Water mist systems with throw ranges from a few centimeters to 150 m for dust suppression at the source.
Locations
Kaisten (AG)
CHHead office, workshop, spare parts warehouse
- Materials
- Steel, stainless steel, rubber, PUCEST®
- Workshop for belt fabrication and vulcanization
- Service vehicles
- Spare parts warehouse for conveyor technology
Apples (VD)
CHRomandie site (Im-Hof SA, integrated into Im-Hof AG)
Components and Systems
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Assembly of conveyor belts (including vulcanization)Assembly | – | Conveyor belts with endless lengths | – | – | Rubber (conveyor belts), PU (scrapers), Carbide (scraper segments), Stainless steel, Steel |
| Installation of rollers, pulleys and motorsAssembly | – | – | – | – | Stainless steel 316 (bearing sleeves), Cast iron (end covers), Stainless steel (end covers) |
| Pulley lagging (rubber coating)Surface | – | – | – | – | Rubber |
| Overhaul of drum motors, rollers and pulleysAssembly | – | – | approx. 300 kg (drive pulley) | – | Steel, Rubber |
| Assembly of wear protection components (PUCEST®)Assembly | – | – | – | – | PUCEST® (polyurethane), 65°Sh and 85°Sh, Aluminum perforated plate, Steel perforated plate, PUCEST® TIX filler compound |
| Assembly of air cannon systems (material flow)Assembly | – | Sword nozzle 2.5m | – | – | Steel |
| Lining of chutes and washing drumsAssembly | – | – | – | – | Rubber, PU (PUCEST®), Stainless steel |
| Installation of dust suppression systems (stationary, water mist/nozzle spray)Assembly | – | Water throw ranges from a few | Water flow up to 350 l/min | – | Steel, Stainless steel |
| Water misting for dust suppression (fine water mist, high pressure 70–100 bar)Surface | – | Throw range 10–150 m | – | – | Water (high-pressure nozzle spraying) |
| Disassembly and reassembly of conveyor belt systemsAssembly | – | 50m long conveyor belt system | – | – | Steel, Stainless steel, Rubber |
| Manufacture of transfer chutes and chassis extensions (in-house production)Engineering | – | Chassis extension by approx. 1.50m | – | – | Steel, Stainless steel, Rubber 40° Shore |
| Assembly of rubber membranes (hose weir, special applications)Assembly | – | – | approx. 2500kg (membrane) | – | 3-layer fabric-reinforced rubber, Special rubber (backing foil) |
| Condition monitoring and inspection of conveyor systemsTesting | – | – | – | 2 inspections per year – 4 inspections per year | – |
| Replacement of drive elements (rolling bearings, belts, chains)Assembly | – | – | – | – | Steel |
| Installation of nozzle rings and nozzle manifolds (water mist)Assembly | – | – | – | – | Steel, Stainless steel |
14 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Drum motors (GV drum motors) | Van der Graaf | 20 | – | – | Mühlebach AG, Schwarzenberg (customer plant) |
| Dust suppression machine | watomizer® V12s | – | – | – | im-hof.ch |
| Dust suppression machine | watomizer® V12 | – | – | – | Construction site of a construction/demolition company |
| Dust suppression machine | watomizer® V22 | 2 | including software control | – | KIBAG Regensdorf |
| Dust suppression machine lines (mobile) | watomizer® compact / power / system / indoor | – | Throw range 10–150 m, swivel angle max. 350°, turbine motor 0.75–90 kW, pump motor 0.75–45 kW, | – | – |
| Dust suppression systems (stationary) | watomizer® station / city | – | for localized dust suppression and enclosed spaces; adiabatic cooling system | – | – |
| High-pressure nozzle spray system | H1 | – | 70–100 bar | – | Recycling + Beton Reigoldswil |
| Air cannons | VSR | 8 | with sword nozzles, installed beneath silo | – | Marti Tunnel AG, Bern |
| Air cannons | – | 2 | 100l and 75l, with 2.5m sword nozzle and spreader nozzle | – | Fischer Kies + Beton AG, Staffelbach/AG |
| Scraper (Starclean PU head scraper) | Starclean | 13 | Belt widths 650mm – 1'600mm, Twist-Swing® technology | – | Elbisgraben Landfill, Arisdorf BL |
| Scraper (Starclean return-belt scraper HM) | Starclean HM | 2 | Belt width 2'200mm | – | Elbisgraben Landfill, Arisdorf BL |
| Submersible pump (autonomous, dust suppression solution) | – | – | starts automatically | – | https://www.im-hof.ch/ (News) |
| Air cannons | – | – | 150-liter air cannons, installed beneath silo | – | Marti Tunnel AG, Bern |
| High-pressure pump (nozzle spray system) | – | – | with integrated inverter | – | Recycling + Beton Reigoldswil |
Additional services
Reference customers
Quality and Safety
Im-Hof complies with SUVA guidelines and material standards, guarantees the operational safety of installed air cannons in writing, and performs condition monitoring with defined measuring points and setpoint reconciliation 2 to 4 times per year. For common products, a large spare parts warehouse ensures delivery within two days, and up to 48 hours for spare parts from overhaul.
| Evidence | Kaisten (AG) |
|---|---|
| SUVA guidelines / material standards |
History
Founded by Melchior Im Hof-Erb more than 130 years ago in Basel (Gerbergasse); trade in leather drive belts and bark leather.
Successive generations (Friedrich Carl Im Hof-Bronner, Melchior Im Hof-Borer, Hanspeter Edelmann-Im Hof) continue the business; trade in industrial products, machinery and tools; relocation through various locations until Kaisten (AG).
Integration of the Western Swiss subsidiary Im-Hof SA (Apples) into Im-Hof AG as a second site.
Today: an independent Swiss family firm over 140 years old with more than 20 employees, led by Gregor and Franziska Edelmann, with David Matic as board member and managing director; Im-Hof becomes PUCEST® exclusive partner for Switzerland.