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Quality Assurance System

Quality Assurance in Design and Development

Status of Quick DR Education

Kubota endeavors to prevent quality problems, and a representative activity in this effort is the initiative to strengthen design reviews. Incorporating the Quick DR* approach, we discuss, test and verify even the smallest incidental change when developing new products, in order to prevent quality problems from arising therefrom.

  • Quick DR is a method of preventive action of potential problems by focusing on incidental changes in design and development.

Quality Questionnaires

We conduct quality questionnaires among Kubota Group employees in Japan and abroad to encourage employees to volunteer information about issues related to quality.

Quality Training

We held training to educate employees about the necessary knowledge, approach, and actions for quality assurance and quality management.

Training name Number of sessions Number of recipients
New recruit training 1 183
Technical new recruit training 1 134
New supervisor training 2 40
New foreman training 1 18
Internal auditor training course 7 104
The Safety, Environment and Quality Forum for executive management 1 180

Internal Audits on Quality

The Kubota Group has systematically carries out the following audits.

  • Quality Audits:Audits to improve the quality management system aimed at providing better quality products and services.
  • Quality Compliance Audits:Audits to ensure compliance with laws, public standards, and contracts with customers.
  • Cross Audits:Audits to improve independence and appropriateness of ISO 9001 internal audits, and to improve the competence of auditors.
  • Audits at Short Notice
Recall Status in FY2020
  • Recall of M-G, GE AT tractors : Total 315 units (began July 16, 2020)
  • Recall of M-D tractors : Total 1,531 units (began April 17, 2020)
  • Recall of DR combine harvesters : Total 821 units (began April 7, 2020)

QC Circle Activity

Kubota first introduced quality control circles in 1967 for the purpose of “fostering people” and “revitalizing the workplace.” Currently, there are 763 circles involving 8,681 personnel active across Kubota Group companies in Japan and abroad.

Quality Achievement Award

The Kubota Group recognizes employees who have made outstanding achievements in quality improvement, with the aim of encouraging even greater achievements in the future as well as raising quality awareness in the workplace and throughout the Group.
In fiscal 2020, Kubota gave out awards in 10 themes of excellence.

Certification status among companies whose primary operation is manufacturing

As of April 1, 2023, 45 out of 74 sites (61%) had obtained certification. 23 of our 24 domestic production sites (96%) have acquired ISO 9001 certification. 22 of our 50 overseas production sites (44%) have acquired ISO 9001 certification.

Kubota [All Kubota divisions have acquired ISO 9001 Certification.]

As of August 1, 2023

Business divisions Offices (excerpt)

Certification scope

Certifying
body
Date of
certification
Farm and Industrial
Machinery Consolidated
Division and Procurement
Headquarters, Quality
Assurance Headquarters
(Departments affiliated with
the Farm and Industrial
Machinery Consolidated
Division)
Head Office
Tokyo Head Office
Sakai Plant
Sakai Rinkai Plant
Okajima Business
Center
Tsukuba Plant
Utsunomiya Plant
Hirakata Plant
Kyuhoji Business
Center
Design, development, and manufacture of agricultural
machinery, construction machinery, engines and related
equipment for all the above
LRQA Jun. 1994
Farm and Industrial
Machinery Consolidated Division
(Precision Equipment
Business Unit)
Kyuhoji Business
Center
Design, Development, Manufacture and Supervising of Installation Service for Electronic Weighing Equipment including Load Cell. DNV Aug. 1994
Water and Environmental
Infrastructure Consolidated Division
(Materials Business Unit)
Hirakata Plant Design, development, production and servicing of steel casting products. LRQA Mar. 1993
Water and Environmental Infrastructure Consolidated Division (Steel Pipe Business Unit) Ichikawa Plant Design, development and manufacture of spiral welded
steel pipes
JICQA Jul. 1998
Pipe systems Business Division Hanshin Plant
Keiyo Plant
Design. Development, Manufacture, Sales, Installation and Servicing of Below-mentioned Products;
(1)Ductile Iron Pipes, Fittings, Accessories and Related Products
(2)Ductile Iron Castings and Related Products
JCQA Jan. 1999
Environmental Solutions
Division
Hirakata Plant Project management, design & development, manufacture, sales, sales engineering, procurement, construction & installation management, commissioning and servicing, maintenance of products & equipment of pump, pump station, valves and gates. LRQA Oct. 1997
Shiga Plant
Kyuhoji Business
Center (including
KUBOTA Membrane
Corp.)
Design & Development and Production of the Small-sized Plastic Septic Tank and Bathtub, and Design & Development, Production Trust Management of the Medium/Large-sized Plastic Septic Tank; Reserch & Development, Design, Production and After-sales Service of Membrane Unit, Membrane Cartridge and All Its Related Spare Parts JUSE Oct. 1997
Tokyo Head Office
Hanshin Office
Project management, sales, sales engineering, design & development, procurement, manufacture, testing & examination, installation & construction management, commissioning and servicing of facilities for sewage & sludge treatment, water purification, and wastewater treatment, of product and equipment for hydraulic gate, pump and pumping equipment Intertek Jul. 2014
Global ICT Headquarters
(ICT Promotion Dept. III)
Head Office
Tokyo Head Office
Chubu Regional Office
  • The design / development, manufacture and maintenance service of:
    • order-made software product
    • software package product
    • network installations.
  • The operation services for information systems and network operation maintenance.
  • The resale of third party products (software products and computer related machinery).
BSI-J May 1997

Affiliates in Japan

As of April 1, 2023

No. Company

Certification scope

Certifying
body
Date of
certification
1 KUBOTA Environmental
Engineering Corporation
Pump Division
Design & development,manufacture,sales,sales engineering,procurement,construction & installation management,commissioning and servicing,maintenance of products & equipment of pump,pump station. LRQA Oct. 1997
2 Kubota ChemiX Co.,
Ltd.(Including Okinawa
Kubota Kasei Co., Ltd.
and Kyushu Kubota Kasei Co., Ltd.)
  • Design, development manufacturing, and technical support service of plastic pipes, fittings, and accessories
  • Design, development, OEM management, and technical support services of metal products (for water supply, sewerage, and building applications, etc.)
JUSE Apr. 1997
3 Nippon Plastic Industry Co., Ltd.
  • Unplasticized poly (vinyl chloride) pipe and a design and development of a second artefact, and production
  • A design and development of plastic pipes such as polyethylene, and production
  • A design and development of plastic sheet and plate such as polystyrene polyethylene, and production
JSA Dec. 1998
4 KUBOTA Environmental
Engineering Corporation
Design, installation and maintenance of water treatment and gas treatment facilities MSA Jan. 2000
5 KUBOTA Environmental
Engineering Corporation
Design, construction, maintenance, operation, and management services of plant facilities (including equipment and machinery) for water purification, sewage, night soil, and waste. MSA Feb. 2000
6 Kubota Air Conditioner Co., Ltd. The design / development and manufacture of central air conditioning equipment & heat pump type air conditioning equipment. JQA Feb. 2000
7 Kansouken Inc.
  • Design, Development and Sales of Packaged Software that Supports Water Supply Business.
  • Provision of Operation Support Services for Packaged Software Supporting for Water Supply Business and its Data Entry Services.
JCQA Apr. 2004
8 Kubota Seiki Co., Ltd.
  • Manufacture of hydraulic valves, hydraulic cylinders for agricultural and construction machines.
  • Manufacture of hydrostatic transmissions for off road vehicles and agricultural machines.
  • Manufacture of hydraulic pumps for off road vehicles and agricultural and construction machines.
  • Manufacture of hydraulic motors for construction machines.
LRQA Apr. 2007
9 Kubota Construction Co., Ltd.
  • Design and construction of civil engineering works and architectural works
  • Construction and construction management of various pipelines
  • Inspection and maintenance for value and ancillary device
  • Investigation and diagnosis of pipeline and ancillary facilities
  • Supervisory service of pipe connecting work and training on pipe-laying
  • Machine sale and rental for pipe-laying work
JQA Dec. 2011

Overseas Group companies

As of April 1, 2023

No. Company

Certification scope

Certifying
body
Date of
certification
1 Kverneland Group Operations
Norway AS
Development, production and sales of farm implements for soil cultivation DNV GL Nov. 1993
2 Kubota Materials
Canada Corporation
Design, development and manufacture of cast steel including stainless, heat resistant and corrosion resistant alloys, in the production of steel castings and fabricated assemblies, as well as the manufacture of non-metallic mineral products (titanic oxide compounds) . SGS North
America
Feb. 1995
3 SIAM KUBOTA
Corporation Co., Ltd.
(Head office)
  • Manufacture of small diesel engine (water cooled single cylinder) and power tiller (walk-behind tractor)
  • Provision and distribution of spare part for KUBOTA product
MASCI Mar.1997
Management of after-sale service of diesel engines, power tiller, tractor, combine harvesters, tillers and excavators
  • Technical support for maintenance
  • Services of marketing and marketing support for after-sale service
MASCI Mar.1997
4 P.T. Kubota Indonesia Manufacture of internal combustion engines LRQA Jan. 1998
5 Kubota Manufacturing
of America Corporation
The manufacture and distribution of farm implements, lawn tractors, sub-compact tractors, RTV’s, tractors and skid steer loaders. SGS Dec. 1999
6 Kubota Industrial
Equipment Corporation
2 Kubota Materials
Canada Corporation
Design, development and manufacture of cast steel including stainless, heat resistant and corrosion resistant alloys, in the production of steel castings and fabricated assemblies, as well as the manufacture of non-metallic mineral products (titanic oxide compounds) IQNet Apr. 2018
7 Pulverizadores Fede, S.L. DISEÑO, FABRICACIÓN, COMERCIALIZACIÓN Y
REPARACIÓN DE MAQUINARIA DE PROTECCIÓN DE
CULTIVOS. COMERCIALIZACIÓN Y REPARACIÓN DE
MAQUINARIA AGRÍCOLA.
BUREAU
VERITAS
Dec.2004
8 Kubota Saudi Arabia
Company, LLC
  • Production of cracking coils for petrochemical companies, reformer tube for refinery and fertilizer companies.
  • Valve maintenance for industries
TÜV NORD
CERT
2011
9 Kubota Agricultural Machinery
(Suzhou) Co., Ltd.
Design & manufacturing of harvester, transplanter; manufacturing of tractor CAM Jun. 2011
10 SIAM KUBOTA Metal
Technology Co., Ltd.
Manufacture of casting iron parts MASCI Oct. 2012
11 Kubota Sanlian Pump
(Anhui) Co., Ltd.
Design and manufacture of clean water pump, sewage pump, axial flow pump, mixed flow pump. CCS May. 2013
12 KUBOTA Engine
(Thailand) Co., Ltd.
Manufacture of diesel engine LRQA Oct. 2013
13 SIAM KUBOTA
Corporation Co., Ltd.
(Amata City office)
Manufacturing of farm tractor with and without wheel and tire including transmission and front axel, agricultural machinery (combine harvester), implement (rotary tillers, slasher). LRQA Feb.2014
Assembly and Distribution of Agricultural Machinery LRQA Feb.2014
14 Kubota Engine (Wuxi) Co., Ltd. Manufacture of water-cooled multi-cylinder diesel engines used in industrial machinery and agricultural machinery SGS United
Kingdom
Nov. 2014
15 Kubota Construction Machinery
(Wuxi) Co., Ltd.
Manufacture of hydraulic crawler excavators (operating weight less than or equal to kx175 type) SGS United
Kingdom
Dec. 2014
16 KUBOTA Precision
Machinery (Thailand)
Co., Ltd.
Manufacture of transmission assembly and linkage hitch hydraulic cylinders for agricultural tractors LRQA Jul. 2015
17 Kubota Baumaschinen
GmbH
Development, distribution, procurement, manufacturing and service of construction machines PÜG mbH Feb. 2016
18 KUBOTA (U.K.) Ltd. The import, sales and distribution of engines, agricultural and construction machinery including the provision of service and training to a dealership network CQS Aug. 2016
19 Kubota Europe S.A.S. Tractor reassembly: Local market application Apave
Certification
Sep. 2016
20 Kubota Farm Machinery
Europe S.A.S
Production and shipping of agricultural tractors, technical assistance and spare parts BUREAU
VERITAS
Feb. 2017
21 Kverneland Group
Manufacturing Lipetsk
Design, manufacturing and delivery of Seeding combinations AIRSEEDER; Cultivators CULTIBAR; Mechanical universal pneumatic precision seed drills OPTIMA, MONOPILL; Fertilizer spreaders EXACTA; Mowers conditioners and rotary rakes TAARUP; Pneumatic seed drills DGⅡ; seeding combinations MSC; Field sprayers Explorer, IXtrack; Trailing/Semi-mounted reversible ploughs PN/RN; Universal trailers, universal hitches, spreader trailers; Disc harrows Qualidisc; Big bag lifters Exlift; Cultivators CTC Maxi; Sub-Soiler Great Plains SS1700; Cultivators Great Plains 8539 FCF; Seed drills Great Plains NTA 3510;Mechanical seed drills Great Plains 2SF30 IQNet Apr.2018
22 Kubota Kasui Vietnam
Co., Ltd.(Head office)
The manufacture and supply of chemicals for water treatment systems; Provision of RO membrane cleaning, water treatment regenerated resin and water analyzing service. IAS May.2018
23 Kubota Kasui Vietnam
Co., Ltd.(Bac Ninh)
The manufacture and supply of chemicals for water treatment system; Provision of RO membrane cleaning, water treatment regenerated resin and water analyzing service. IAS May.2018
24 Kubota (Deutschland) GmbH Sales and customization of tractors, machines for ground care, attachments, spare parts, engines, engine accessories, service and customer support EQ ZERT Sep. 2018
25 KUBOTA Turkey Makine Ticaret
Limited Sirketi
Manufacture and Import of Tractors and Pedestrian Controlled Tractors KINGCERT Sep. 2019
26 Escorts Kubota India Prt Ltd, Manufacturing of Tractor and its Assemblies TUV SUD May.2021
  1. LRQA : Lloyd's Register Quality Assurance Ltd.
  2. DNV : DNV GL BUSINESS ASSURANCE JAPAN K.K.
  3. JICQA : JIC Quality Assurance Ltd.
  4. JCQA : Japan Chemical Quality Assurance Ltd.
  5. JUSE : Union of Japanese Scientists and Engineers
  6. Intertek : Intertek Certification Ltd.
  7. BSI-J : BSI Group Japan K.K.
  8. JSA : Japanese Standards Association
  9. BCJ-SAR : The Building Center of Japan
  10. MSA : Management System Assessment Center Co., Ltd.
  11. JQA : Japan Quality Assurance Organization
  12. MASCI : Management System Certification Institute (Thailand)
  13. CCS : China Classification Society
  14. CQS : Certified Quality Systems
  15. LMS :LMS Certification Limited
  16. TÜV SÜD :TÜV SÜD South Asia Private Limited
  17. SGS :Société Générale de Surveillance S.A.
  18. IAS :International Accreditation Service(IAS)United States Of America
  19. SGS North America :SGS North America Inc.
  20. KINGCERT :King Cert International Certification Ltd.
  21. BUREAU VERITAS :Bureau Veritas Iberia S.L.