Foundry Sector

常磐製作所の鋳造部門

Joban Machinery Co., Ltd has the foundry sector with a history since 1937, and it has been enhanced the contents of the business with changing times. The foundry sector operates melting and casting for variety of products of the gray iron (FC250/300) and the ductile cast iron (FCD400/450/500/600). We have the green sand cast automatic molding line and the furan sand self-hardening bench molding line and we can produce products weigh from 10kg to 700kg. Our production capacity is approximately 400t/month. Our products are primarily used as automotive components, construction equipment components, and hydraulic equipments’ components, etc.

Equipment of Foundry Sector

FacilityName and CapacityQuantity
MeltingHigh frequency electric furnace1.5t/B2 furnaces
Molding
(includes Sand processing)
AMS-08 Machine molding line800 x 850 x 350 / 350
60s/cycle
1 line
Furan bench molding line20t/month1 line
Core making system 2 sets
MachiningOverhead shot blast0.5t/set,2t/sets3 blasts
Drum-type shot blast1t/B2 blasts
Compressor75kW3 compressors
Annealing furnace20t/B1 furnace
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

鋳造製品見本モーターボディ

Product name:
Motor body

Material: FC300
Weight: 177kg

鋳造製品見本キャリアB

Product name:
Carrier B

Material: FCD450
Weight: 28.5kg

鋳造製品見本カバー

Product name:
Cover

Material: FC250
Weight: 50kg

鋳造製品見本ハブ

Product name:
Hub

Material: FCD450
Weight: 560kg

Machining Sector

常磐製作所の機械工場

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.FacilityQuantity
1Vertical Machining Center5 machines
2Horizontal Machining Center14 machines
3NC lathe16 machines
4Lathe3 machines
5Milling Machine2 machines
6Honing Machine2 machines
7Hobbing Machine2 machines
8Drilling Machine5 machines
9Polishing machine7 machines
10Others33 machines
 Total:89 machines

Vertical Machining Center

NC lathe

Horizontal Machining Center

NC cylindrical grinder

NC inner width grinder

Automatic buffing machine​

Machined products

モーターボディ

Product name:
Motor body

クランクシャフト

Product name: Crankshaft

スペーサー

Product name:
Spacer

コネクティングロッド

Product name:
Connecting rod

Quality-related Equipment

NameQty
Coordinate Measuring Machine1
Roundness cylindrical shape measuring machine1
Surface Roughness Tester1
Contour Measuring1
Optical Emission Spectrometer1
Ultrasonic Flaw Detector1
Amsler Universal Testing Machine1
Charpy Impact Tester1
Various Types of Hardness Scales6
Various Types of Sand Testers7