2617-1 Onogomachi, Joso City, Ibaraki, 300-2521 Japan

+81(0)297-27-5858

1968.2

10 million yen

31 people (as of August 2025)

President & CEO  Mamoru Nomura

IBARAKI GRINDING WHEEL LLC is established with capital of 5 million yen. Started manufacturing Ultrathin Cut-Off Wheels.

Started manufacturing Electroplated Tools.

Reorganized into IBARAKI GRINDING WHEEL Co., Ltd. with capital of 10 million yen.

Completed construction of Factory 2 in Joso City, Ibaraki.

Quality management system ISO9001 certified.

50th anniversary.

Head office and Factory 1 relocated and completed in Joso City, Ibaraki.

Started manufacturing Wire Mesh Grinding Wheels.

Ultrathin Cut-Off Wheel Manufacturing Line
Electric Firing Furnace (Nippon Denka Koki / Konishi Denki Kogyo)
Vertical Grinding Machine (Kyoshin Machinery, D405)
Cylindrical Grinding Machine (MARUEI, MIG-MG-300)
Marking System (Kishugiken Co., Ltd.)
Contact-Type Digital Sensor (KEYENCE, GT2 Series)
Precision Cutting Machine (Struers, Secotom-60)
Rotational Speed Testing Machine

Diamond / CBN Electroplating Equipment
Masking Processing Equipment
Finishing Equipment
Eyepiece-less Stereo Microscope (Vision Engineering, Lynx)
Digital Microscope (KEYENCE, VHX-X1 Series)
Hybrid Laser Marker (KEYENCE, MD-X2000 Series)
Image Dimension Measurement System (KEYENCE, IM-8000 Series)

CNC Lathe (Yamazaki Mazak, QT-COMPACT 300MY)
CNC Lathe (Yamazaki Mazak, SQT-200)
CNC Milling Machine (Yamazaki Giken, YZ-400NCR)
CNC Swiss-Type Automatic Lathe (Citizen Machinery, B-12)
CNC Swiss-Type Automatic Lathe (Citizen Machinery, L-20)
CNC Swiss-Type Automatic Lathe (Citizen Machinery, A-32)
Small-Hole EDM Machine (Mikuni Makino, ED-α 2000S)
Cylindrical Grinding Machine (JTEKT, GUP32-50)
Cylindrical Grinding Machine (MARUEI, MIG-MG-300)
Profile Projector (Mitutoyo, PJ-A3000)0

2617-1 Onogomachi, Joso City,
Ibaraki, 300-2521 Japan
TEL：+81(0)297-27-5858
15 minutes from Yawara Interchange on the Joban Expressway
5 minutes from Joso Interchange on the Metropolitan Intercity Expressway