Foundry Sector
The foundry sector of Joban Seisakusho boasts a history since 1945, and has enriched its contents as the times have changed. Currently, we are melting and casting various products of gray cast iron (FC250 / 300) and ductile cast iron (FCD400 / 450/500/600). For molding, we have an automatic molding line and a furan self-hardening hand-made molding line, and we can produce heavy products up to 10 to 700 kg. The production capacity will be about 200t / month. The main uses of the product are automobile parts, construction machinery parts, hydraulic parts, etc.
Equipment of Foundry Sector
| Facility | Name and Capacity | Quantity | |
| Melting | High frequency electric furnace | 1.5t/B | 2 furnaces |
| Molding (includes Sand processing) | AMS-08 Machine molding line | 800 x 850 x 350 / 350 60s/cycle | 1 line |
| Furan bench molding line | 20t/month | 1 line | |
| Core making system | 2 sets | ||
| Machining | Overhead shot blast | 0.5t x 1set,2t x 1sets | 3 blasts |
| Drum-type shot blast | 1t/B | 2 blasts | |
| Compressor | 75kW | 3 compressors | |
| Shot blast machine | 3 blasts | ||
| Facility | Name and Capacity | Quantity | |
| Melting | High frequency electric furnace | 1.5t/B | 2 furnaces |
| Molding (includes Sand processing) | AMS-08 Machine molding line | 800 x 850 x 350 / 350 60s/cycle | 1 line |
| Furan bench molding line | 20t/month | 1 line | |
| Core making system | 2 sets | ||
| Machining | Overhead shot blast | 0.5t x 1set,2t x 1sets | 3 blasts |
| Drum-type shot blast | 1t/B | 2 blasts | |
| Compressor | 75kW | 3 compressors | |
| Shot blast machine | 3 blasts | ||
AMS-08 Machine molding line
AMS-08 Machine molding line
Furan bench molding line
Furan bench molding line
Foundry Product Samples
Product name:
Motor body
Material: FC300
Weight: 177kg
Product name:
Carrier B
Material: FCD450
Weight: 28.5kg
Product name:
Cover
Material: FC250
Weight: 50kg
Product name:
Hub
Material: FCD450
Weight: 560kg
Machining Sector
In 1938, one year after the foundry sector, the machinery plant of Joban Machinery Co., Ltd started running. The machinery plant has been operated broad production from the precision work for small parts to large parts for construction machines, and now the plant created the integrated manufacturing system including the assembly of hydraulic motors using our existing strength that we can make foundry materials on its own. Our hydraulic motor is used worldwide under the brand name of KYB Co., Ltd and is highly trusted. Of course, we are good at handling single parts.
Breakdown of Facilities in Machining Process Sector
| Facility No. | Facility | Quantity |
| 1 | Vertical Machining Center | 4 machines |
| 2 | Horizontal Machining Center | 14 machines |
| 3 | NC lathe | 16 machines |
| 4 | Lathe | 3 machines |
| 5 | Milling Machine | 2 machines |
| 6 | Honing Machine | 2 machines |
| 7 | Hobbing Machine | 2 machines |
| 8 | Drilling Machine | 5 machines |
| 9 | Polishing machine | 7 machines |
| 10 | Others | 33 machines |
| Total: | 89 machines |
Vertical Machining Center
NC lathe
Horizontal Machining Center
NC cylindrical grinder
NC inner width grinder
Automatic buffing machine
Machined products
Product name:
Motor body
Product name: Crankshaft
Product name:
Spacer
Product name:
Connecting rod
Quality-related Equipment
| Name | Quantity |
| Coordinate Measuring Machine | 1 |
| Roundness cylindrical shape measuring machine | 1 |
| Surface Roughness Tester | 1 |
| Contour Measuring | 1 |
| Optical Emission Spectrometer | 1 |
| Ultrasonic Flaw Detector | 1 |
| Amsler Universal Testing Machine | 1 |
| Charpy Impact Tester | 1 |
| Various Types of Hardness Scales | 6 |
| Various Types of Sand Testers | 7 |