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Quality Assurance System

Quality control in design and development

Kubota endeavors to prevent quality problems, and a representative activity in this effort is the initiative to strengthen design reviews (DR). Integrating the DRBFM*1 approach, we discuss, test and verify even the smallest item changed when developing new products, in order to prevent quality problems

  • 1 DRBFM is the abbreviation for "Design Review Based on Failure Mode," a method of preventing potential problems from arising by focusing on changes in design and development.

A design review
A design review

Quality audits

The Kubota Group periodically conducts quality audits for the purpose of providing its customers with even better products and services, thereby ensuring the continuous improvement of its quality management system.

Raising awareness of the environment and quality

In November 2017, Kubota held the Environment and Quality Forum led by a visiting lecturer as an awareness-raising activity for improving the environment and quality.
Based on the theme “Konica Minolta’s environmental management and quality management,” the lecturer from Konica Minolta spoke about the concept and initiatives of Konica Minolta, a company that is constantly ranked at the top of the Nikkei Environmental Management/Quality Management Rankings, by presenting some cases. Around 300 people, mainly management, attended, and renewed their awareness of the importance of environmental management and quality management.

Quality and Environment Forum (November 27, 2017)
Quality and Environment Forum (November 27, 2017)


Recent recall status (as of December 20, 2017)

  • · Recall of ER combine harvesters: Total 848 units (began April 10, 2017)
  • · Recall of WR combine harvesters: Total 468 units (began April 10, 2017)
  • · Recall of wheel loaders: Total 311 units (began July 3, 2017)

We deeply apologize for the inconvenience caused to our users.


Small group activities

Starting from FY2017, subsidiaries and affiliated companies are included in the awarding target. The Small Group Activities Presentation Competition was held, participated in by 17 circles selected from approximately 670 Kubota circles.
At the same time, a circle from the Sakai Plant participated in the International QC Circle Competition 2017 held in Manila, the Philippines, and won the Gold Prize, the highest rank.

Small Group Activities Presentation Competition
Small Group Activities Presentation Competition

ISO 9001 certification status

Kubota [Farm & Industrial Machinery Division]

Business divisions/Offices Certification scope (excerpt) Date of
certification
Certifying
body
Tractors, farm machinery,
construction machinery,
engines, agricultural
solutions, parts
Head Office Business planning and marketing 1994.06 LRQA
Sakai (including
Okajima)
Rinkai
Engines, tractors, farm machinery,
construction machinery
Tsukuba Engines, tractors
Utsunomiya Rice transplanters, harvesters
Hirakata Construction machinery
Kyuhoji Agriculture-related machinery
  Electronic weighing equipment and
load cells
1994.08 DNV

Abbreviations of Certifying Bodies
LRQA: Lloyd's Register Quality Assurance Ltd.
DNV: NV GL BUSINESS ASSURANCE JAPAN K.K.



Kubota [Water & Environment Division]

Business divisions/Offices Certification scope (excerpt) Date of
certification
Certifying
body
P
i
p
e

s
y
s
t
e
m
s
Iron pipes Hanshin
Keiyo
Ductile iron pipes, fittings, accessories,
other ductile iron products and related
products
1999.01 JCQA
Pumps and valves Hirakata Pumps, pump stations, sewage treatment
and water purification plants, valves and
gates
1997.10 LRQA
E
n
v
i
r
o
n
m
e
n
t
Waterworks and
sewerage, membrane
systems
Tokyo
Hanshin
Office
Sewage and sludge treatment, water
purification and wastewater treatment,
membrane modules and anaerobic MBR
technology
2014.07 Intertek
Purification tanks Shiga Plastic water purification tanks 2003.04 JUSE
M
a
t
e
r
i
a
l
s
Steel pipes Ichikawa Spiral welded steel pipes 1998.07 JICQA

Abbreviations of Certifying Bodies
JCQA: Japan Chemical Quality Assurance Ltd.
LRQA: Lloyd's Register Quality Assurance Ltd.
Intertek: Intertek Certification Japan Ltd.
JUSE: Union of Japanese Scientists and Engineers
JICQA: JIC Quality Assurance Ltd.



Affiliates in Japan

Affiliates in Japan Certification scope (excerpt) Date of
certification
Certifying
body
Kubota Seiki Co., Ltd.
  • Design, develop and manufacture hydraulic valves and hydraulic cylinders for agricultural and construction machinery
  • Manufacture transmissions and hydraulic pumps for off-road vehicles and agricultural machinery, and hydraulic motors for construction machinery
2007.04 LRQA
Kubota ChemiX Co., Ltd.
  • Design, develop and manufacture plastic pipes, joints and accessories/li>
1998.04 JUSE
Nippon Plastic Industry Co., Ltd.
  • Design, develop and manufacture hard vinyl pipes and secondary processed products
  • Design, develop and manufacture polyethylene and other plastic pipes
  • Design, develop and manufacture polystyrene/polyethylene and other plastic sheets/plates
1998.12 JSA
Kubota Pipe Tech Co.
  • Construction and construction management of various pipelines
  • Investigation and diagnosis of pipelines and attached facilities
  • Installation training for fittings and pipe laying
  • Pipe-laying equipment rental
2002.03 JCQA
Kansouken Inc.
  • Design and develop package software for supporting watersupply business
  • Support operation of package software for supporting watersupply business and provide data-input service
  • Provide survey and consulting services for water network
2004.04 JCQA
Kubota Environmental Service Co., Ltd.
  • Design, construction, maintenance and servicing of plant facilities for water supply, sewer drainage, solid waste processing, excreta disposal and garbage
2000.02 MSA
Kubota Kasui Corporation
  • Design and construction of environmental conservation plants
2000.01 BCJ-SAR
Kubota Air Conditioner, Ltd.
  • Design, develop, manufacture and ancillary services for largescale air-conditioning equipment
2000.02 JQA
Kubota Systems Inc.
  • Consigned development of software products and software packaging, design, develop and construct network structures, and maintenance services
  • ·Information system operation, and operation and maintenance of networks
  • Sales of purchased products
1997.05 BSI-J
Heiwa Kanzai Co., Ltd.
  • Design, develop and supply cleaning services for buildings and facilities
2002.07 JICQA
Kubota Construction Co., Ltd.
  • Design and construct civil engineering structures and buildings
2011.12 JQA

Abbreviations of Certifying Bodies
LRQA: Lloyd's Register Quality Assurance Ltd.
JUSE: Union of Japanese Scientists and Engineers
JSA: Japanese Standards Association
JCQA: Japan Chemical Quality Assurance Ltd.
MSA: Management System Assessment Center Co., Ltd.
BCJ-SAR: The Building Center of Japan
JQA: Japan Quality Assurance Organization
BSI-J: BSI Group Japan K.K.
JICQA: JIC Quality Assurance Ltd.


Related Information

Kubota's research and development values thorough hands-on approach. As an agricultural and water expert, we challenge and attain the future of food, water, and the environment, realizing our customer’s needs.

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