Manufacturer of eccentric screw pumps, rubber-lined and PU-coated rollers, ship shaft bearings and polyurethane wear protection
Kunststofftechnik Rodenberg GmbH
RodenbergNew on Amplifa
About KTR
Kunststofftechnik Rodenberg GmbH (KTR) is a medium-sized manufacturer of pumps, rollers, ship shaft bearings and wear protection products made of polyurethane and rubber, headquartered in Rodenberg, Lower Saxony. The company supplies customers worldwide in the construction industry, agricultural technology, the petroleum industry, food processing, mechanical and plant engineering, and shipyards, with a total of more than 3,000 different products. Production ranges from single parts to large series. KTR realizes the complete depth of manufacturing in-house – from raw materials via its own toolmaking, turning, milling, robotic welding, rubber lining and polyurethane coating through to painting. The product worlds include construction pumps and industrial pumps (eccentric screw pumps), custom rollers for agricultural technology, water-lubricated ship shaft bearings, PU wear protection mats as well as PU moulded parts produced by gravity casting and TPU injection moulding. Depending on requirements, elastomers, polyurethane and metals such as steel, stainless steel and aluminium are processed and combined.
- Site
- Rodenberg
- Processes
- Injection moulding (plastic/rubber), Polyurethane coating, Autoclave production (rubber lining), Roller rubber lining (autoclave, rubber injection moulding or re-coating on polyurethane casting, Polyurethane coating of rollers (hardness grades 50–95 Shore A), Rubber lining based on various elastomer compounds (56–80 Shore A), Turning (roller journals and tubes), Milling (roller journals and tubes)
- Materials
- Polyurethane (PUR), Elastomers, Stainless steel, Steel, Aluminium, Tool steel (through-hardened), Carbon steel (case-hardened), Red brass
- Certificates
- ISO 9001, ISO 50001 (energy management), Ship shaft bearing product certification (Germanischer Lloyd), ISO 50001, Germanischer Lloyd product certification (ship shaft bearings)
- Industries
- Construction industry, Agricultural technology/agricultural machinery, Petroleum industry, Food processing, Mechanical and plant engineering, Shipyards/shipbuilding
- 01
Design and Engineering
- 02
Toolmaking
- 03
Turning and Milling
- 04
Robotic Welding
- 05
Rubber Lining (Autoclave, Injection Moulding) or Polyurethane Casting
- 06
Surface Treatment (Hard Chrome Plating, Salt Bath Nitrocarburising, Zinc
- 07
Painting
- 08
Test Bench Testing
- 09
Shipping
Location
Rodenberg
DEProduction, Toolmaking, Engineering, Administration
- Part weight / size
- Rollers up to Ø 250 mm × 3,000 mm; shaft diameters 75–400 mm
- Lot size
- Single part to large series
- Materials
- Polyurethane, elastomers, steel, stainless steel, aluminium, red brass
- Autoclave
- Rubber injection moulding machine
- Polyurethane casting machine
- Robotic welding system
- Lathe
- Milling machine
- Test bench equipment
Components and Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Injection moulding (plastic/rubber)Plastics | – | – | – | – | Polyurethane (TPU), Rubber/elastomers |
| Polyurethane coatingSurface | – | – | – | – | Polyurethane (PUR) |
| Autoclave production (rubber lining)Plastics | – | – | – | – | Rubber/elastomers |
| Roller rubber lining (autoclave, rubber injection moulding or re-coating on polyurethane castingPlastics | – | 3,000 mm (roller length) × Diameter up to 250 mm | – | – | Rubber/elastomers, Polyurethane (PUR), Steel, Stainless steel, Aluminium |
| Polyurethane coating of rollers (hardness grades 50–95 Shore A)Surface | – | 3,000 mm × Diameter up to 250 mm | – | – | Polyurethane (PUR) |
| Rubber lining based on various elastomer compounds (56–80 Shore A)Plastics | – | 3,000 mm × Diameter up to 250 mm | – | – | Rubber/elastomers |
| Turning (roller journals and tubes)Machining | – | – | – | – | Steel, Stainless steel, Aluminium |
| Milling (roller journals and tubes)Machining | – | – | – | – | Steel, Stainless steel, Aluminium |
| Robotic weldingJoining | – | – | – | – | Steel, Stainless steel |
| PaintingSurface | – | – | – | – | Steel, Stainless steel, Aluminium |
| Zinc platingSurface | – | – | – | – | Steel |
| Hard chrome platingSurface | – | – | – | – | Steel, Stainless steel |
| Manufacture of construction pumps (eccentric screw pumps, installation diameter 50–300 mm)Plastics | – | Installation diameter 50–300 mm | – | – | Rubber compounds, Tool steel, Carbon steel, Stainless steel |
| Hard chrome platingSurface | – | – | – | – | Steel, Stainless steel |
| Salt bath nitrocarburisingHeat treatment | – | – | – | – | Steel, Stainless steel |
| Manufacture of industrial pumps (eccentric screw pumps, pump diameter 30–250 mm)Plastics | – | Pump diameter 30–250 mm | – | – | Rubber grades (NBR, NR-BR, NR-SBR, light NBR FDA, HNBR), Stainless steel, Tool steel, Carbon steel |
| Gravity casting of polyurethane moulded partsPlastics | – | – | – | Single part/small series – Large series | Polyurethane (PUR, ester-based, cast polyurethane) |
| TPU injection moulding (low-volume items in larger series)Plastics | – | – | – | – | TPU (thermoplastic polyurethane) |
| Mould making (toolmaking)Engineering | – | – | – | – | – |
| Manufacture of ship shaft bearings (sterntube and shaft bracket bearings, shaft diameters 75–400 mm)Plastics | – | Shaft diameter 75–400 mm | – | – | Red brass, Steel, corrosion-resistant steels, specially developed bearing rubber |
| Rubber lining/re-lining of ship shaft bearings (MD bearings with special rubber structure)Plastics | – | – | – | – | Bearing rubber |
| Manufacture of wear protection mats (PUR, hardness grades 55, 70, 90 Shore A)Plastics | – | 10,000 mm × 1,400 mm × Thicknesses 4–20 mm | – | – | Polyurethane (PUR) |
| Test bench testing (runout and dimensional inspection, pressure and delivery rate tests)Testing | – | – | – | – | – |
| Acceptance by Germanischer Lloyd (ship shaft bearings)Testing | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Autoclave (for manufacturing rubber-lined rollers) | – | – | – | – | – |
| Rubber injection moulding machine | – | – | – | – | – |
| Polyurethane casting machine | – | – | – | – | – |
| Robotic welding system | – | – | – | – | – |
| Lathe | – | – | – | – | – |
| Milling machine | – | – | – | – | – |
| Test bench equipment (runout/dimensions, pressure/delivery rate) | – | – | – | – | – |
Additional services
Quality and Certification
Before delivery, rollers, pumps and ship shaft bearings are tested on in-house test bench equipment (runout, dimensions, pressure, delivery rate). Upon request, acceptance of the ship shaft bearings is carried out by Germanischer Lloyd.
| Evidence | Rodenberg |
|---|---|
| ISO 9001 | |
| ISO 50001 | |
| Germanischer Lloyd product certification (ship shaft bearings) |
History
Kunststofftechnik Rodenberg brand has existed for almost five decades
- 2021
Certification according to ISO 9001