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Maintaining and Improving Quality

1. Product Safety

Kubota strives to satisfy customers and secure their trust by providing products, technologies, and services that are safe and of the highest quality.
In 2023, we filed the following two recall notices.

  • Domestic Recall Filing Status in FY2023

    • Recall of NEW MR series tractors:Total 3,705 units(notice filed Oct. 31, 2023)
    • Recall of wheel loaders:Total 2,418 units(notice filed Jun. 9, 2023)
  • Quality Management System Certification

    We post updated information on the ISO 9001 certification status of our production sites in Japan and overseas as following tables.

2. Initiatives to Increase Quality Awareness

The Kubota Group believes that no pursuit of sales or profits is worth damaging the character of the Company. Guided by this belief, we have been conducting the following initiatives to increase quality awareness.

  • Quality Forum

    The Quality Forum for executive management focused on cultivating the right mindset to strengthen quality and compliance initiatives. The forum included the presentation of concrete examples.

  • Conducting Quality Compliance Education

    To strengthen awareness of rules regarding quality assurance, we conduct compliance education each year for employees in Japan and overseas.

  • Quality Questionnaires

    In addition to the Kubota Hotline (whistleblowing system), we regularly conduct a Quality Questionnaires to encourage employees with knowledge of quality compliance issues to voluntarily provide information. The questionnaire is carried out by the Quality Assurance Promotion Department, which takes a neutral position with respect to each business unit in order to gain candid responses. The department formulates questionnaire questions that take into account potential quality issues based on the nature of each business, the operating environment and historical quality-related issues. If problems are identified in employee responses, they are reported to management and the Quality Assurance Headquarters takes the lead in examining and implementing necessary responses.
    The Quality Survey implementation rate in 2023 was 100% for domestic Group company employees* and 98% for overseas Group company employees.

    • Kubota Group employees that have been assigned company email addresses.

  • Internal Audits on Quality

    The Kubota Group has systemized, and carries out, the following internal audits on quality.

    • Quality Audits
      Audits to improve the internal control regarding the quality of products, technologies, 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 ensure the competence of auditors.
  • 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 1 328
Technical new recruit training 1 224
Internal auditor training 11 186
New supervisor training 2 49
New foreman training 1 6
Product risk assessment training 2 37

3. Initiatives to Increase Quality

Kubota is working to improve the quality of each operation process, from development through to manufacturing, sales, and services.

  • Quality Improvement in Design and Development

    At Kubota, we work to prevent quality issues before they arise. A typical activity in this regard is our design review (DR)*. We have clearly documented standards for research and development work regarding DR, and these are implemented rigorously.

    • DR is an opportunity to have the products of development and design examined by multiple participants. The participants include not only the engineers from the development and design division, but also representatives from other divisions involved in the products, such as manufacturing and quality assurance.
  • QC Circle Activity Award

    An award presented to employees who have an outstanding record of activities in quality control circles.
    Kubota first introduced quality control circles in 1967 for the purpose of “fostering people” and “revitalizing the workplace.” As of 2023, there were 714 circles active across Kubota Group companies in Japan and abroad.

    • Award presentations were suspended between 2020 and 2021 during the COVID-19 pandemic, but presentations were held online and activities resumed from 2022.
  • Quality Achievement Award

    The Kubota Group recognizes employees who have made outstanding achievements in quality improvement in their activities to create valuable products and services from the customers’ perspective. The Quality Achievement Award was launched in 2017 initially for domestic sites, but has now been expanded globally to include overseas sites.
    In 2023, Kubota gave out awards in 17 categories. (Total awards since 2017: 125 themes)

Certification status among companies whose primary operation is manufacturing

As of March 31, 2024, 44 out of 73 sites (60%) had obtained certification. 23 of our 24 domestic production sites (96%) have acquired ISO 9001 certification. 21 of our 49 overseas production sites (43%) have acquired ISO 9001 certification.

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

As of March 31, 2024

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
Construction Machinery Division Hirakata Plant
Global Institute of Technology
Sakai Mihara Plant
Design, development, manufacture, business planning and sales of agricultural machinery, construction machinery, engines, and related parts and equipment. 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, manufacture, sales 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
Pump Casting Section
Tokyo Head Office
Project management, design & development, manufacture, casting, sales, sales engineering, procurement, installation management, commissioning and servicing, maintenance of products & equipment of pumps, pump station, valves and gates. Intertek Oct. 1997
Tokyo Head Office
Shiga Plant
Hanshin Office
Kyuhoji Business Center
Kubota Membrane Co., Ltd. Head Office
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
International Environmental Engineering Dept.
Headquarters Hanshin Office
Shin-yodogawa Environmental Plant Center
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 March 31, 2024

No. Company

Certification scope

Certifying
body
Date of
certification
1 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
2 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
3 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.
  • Design & development, manufacture, sales, sales engineering, procurement, construction & installation management, commissioning and servicing, maintenance of products & equipment of pump, pump station.
  • Design, installation and maintenance of water treatment and gas treatment facilities
MSA Feb. 2000
4 Kubota Air Conditioner Co., Ltd. The design / development and manufacture of central air conditioning equipment & heat pump type air conditioning equipment. JQA Feb. 2000
5 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
6 Kubota Construction Co., Ltd.
  • DESIGN AND CONSTRUCTION OF CIVIL ENGINEERING WORKS AND ARCHITECHTURAL WORKS
  • CONSTRUCTION AND CONSTRUCTION MANAGEMENT OF VARIOUS PIPELINES
  • INSPECTION AND MAINTENANCE FOR VALUE AND ANCILLARY DEVICE
  • MACHINE SALE AND RENTAL FOR PIPE-LAYING WORK
  • SUPERVISORY SERVICE OF PIPE CONNECTING WORK AND TRAINING ON PIPE-LAYING
JQA Dec. 2011

Overseas Group companies

As of March 31, 2024

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 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
7 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
8 Kubota Agricultural Machinery
(Suzhou) Co., Ltd.
Design & manufacturing of harvester, Paddy transplanter; manufacturing of tractor CAM Jun. 2011
9 SIAM KUBOTA Metal
Technology Co., Ltd.
Manufacture of casting iron parts MASCI Oct. 2012
10 KUBOTA PUMP
(ANHUI) CO., LTD.
DESIGN AND MANUFACTURE OF CLEAN WATER PUMP, SEWAGE PUMP, AXIAL FLOW PUMP, MIXED FLOW PUMP. CCS May. 2013
11 KUBOTA Engine
(Thailand) Co., Ltd.
Manufacture of diesel engine LRQA Oct. 2013
12 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
13 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
14 Kubota Construction Machinery
(Wuxi) Co., Ltd.
Manufacture of hydraulic crawler excavators SGS United
Kingdom
Dec. 2014
15 KUBOTA Precision
Machinery (Thailand)
Co., Ltd.
Manufacture of transmission assembly and linkage hitch hydraulic cylinders for agricultural tractors LRQA Jul. 2015
16 Kubota Baumaschinen
GmbH
Development, distribution, procurement, manufacturing and service of construction machines PÜG mbH Feb. 2016
17 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
18 Kubota Europe S.A.S. Tractor reassembly: Local market application Apave
Certification
Sep. 2016
19 Kubota Farm Machinery
Europe S.A.S
Production and shipping of agricultural tractors, technical assistance and spare parts BUREAU
VERITAS
Feb. 2017
20 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
21 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
22 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
23 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
24 KUBOTA Turkey Makine Ticaret
Limited Sirketi
Manufacture and Import of Tractors and Pedestrian Controlled Tractors KINGCERT Sep. 2019
25 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.