UD Trucks

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"Nissan Diesel" redirects here. It is not to be confused with Dongfeng Nissan-Diesel Company.
UD Trucks Corporation
Subsidiary of AB Volvo
Industry Trucks and buses
Founded May 1, 1950 (historical December 1, 1935)
Headquarters Ageo, Saitama, Japan
Key people
Joachim Rosenberg, Chairman[1]
Yusuke Sakaue, President
Parent Volvo
Subsidiaries Dongvo Truck Company (50%)
Website udtrucks.com
Nissan Diesel 6TW12

UD Trucks Corporation (UDトラックス株式会社, UD Torakkusu Kabushikigaisha) is a Japanese company whose principal business is the manufacture and sales of light, medium and heavy duty diesel trucks, buses, bus chassis and special-purpose vehicles. Its headquarters is located in Ageo, Saitama, Japan. The company is owned 100% by the Volvo Group since 2007.[2][3] Until 2010, it was known as Nissan Diesel, the company changed its name to UD Trucks. Already before the name change, the UD name was prominently displayed to separate the identity from that of their former owner Nissan Motors.

The UD name was originally used for the company's Uniflow Diesel Engine (known as Two-stroke Engine), developed in 1955, but is now marketed as meaning "Ultimate Dependability".[4]

On February 15, 2010 it was announced that UD Trucks had taken over the import and sales of Volvo trucks in Japan, as a consequence of Volvo's ownership.[5]



In 1935, Nihon Diesel Industries, Ltd, in Kawaguchi, Japan on the outskirts of Tokyo was established. The company started production of KD-series 2-cycle diesel engines. In 1940 production of 4.5-ton-payload TT6 series trucks started. In development of 7.5-ton-payload TN93 series trucks, featuring the largest payload capacity in the Japanese market, and the nation's first monocoque-type BR3 series buses with rear-mounted engines. In 1949 development of 7.5-ton-payload TN93 series trucks started.


In 1950 the company name changed to Minsei Diesel Industries, Ltd.; and the company was on the way to becoming a comprehensive transport equipment manufacturer. In 1955 the UD name was born, when Minsei Diesel Industries introduced a range uniflow-scavenging 2-cycle diesel engine. Of course, the UD stood for "Uniflow Diesel", named after the engine they had invented for use in their trucks. The production of various trucks and buses with 81 kW (110 PS) UD3, 110 kW (150 PS) UD4 and 169 kW (230 PS) UD6 engines began. In 1957 the development of Japan's first RFA series air-suspension buses and 10-ton-payload 6TW10 series trucks called "Jumbo" in overseas markets began.


Nissan Diesel 780

In 1960 the company name was changed again, this time to Nissan Diesel Motor Co., Ltd. Forward-control trucks and truck tractors were also introduced. In 1963, there was the initial production of compact 4-cycle 40 kW (55PS) SD20 and 44 kW (60PS) SD22 diesel engines. 70 to 80-ton crane-carrier truck series were also introduced to the line-up. 1969 saw the introduction of 4-cycle 136 kW (185PS) PD6 and 99 kW (135 PS) ND6 diesel engines for heavy-duty vehicles. Diesel products were sold in Japan at a separate dealership sales channel called Nissan Diesel. In 1969, the 780-series replaced the 680-series bonneted truck.


Nissan Diesel CW 340

1972 saw the marketing of V-type 206 kW (280 PS) RD8 and 257 kW (350 PS) RD10 diesel engines. In 1973, light-duty trucks were produced for the Nissan Motor Company.



In 1982 there was the introduction of new forward-control cab for CWA52/45 series trucks, CKA-T series truck tractors and ultra-modern U(A)21, U(A)31, RA51 series buses. As of 1985 the company had a wide range of light-, medium- and heavy-duty trucks, as well as buses and special-purpose vehicles such as crane carriers. In 1989 there was an agreement with IVECO of Italy to jointly develop low-pollution diesel engines.


Jonckheere Monaco

In 1992 Nissan Diesel Philippines Corp. started manufacturing deluxe coaches in cooperation with Jonckheere Bus & Coach NV/SA of Belgium. In 1995 Nissan Diesel produced its two million vehicles since commencing production in May 1950. 1996 brought about the establishment of P.T. Astra Nissan Diesel Indonesia, a joint venture company with Marubeni Corporation and P.T. Astra International, and the Dongfeng Nissan Diesel Motor Co., Ltd, a joint venture company with Sumitomo Corporation and Dongfeng Motor Corporation.


In 2000 Nissan Diesel introduced new heavy-duty trucks in Japan and Asian countries. It also acquired the sales operation from Nissan Diesel Sales Co., Ltd. In 2003, Nissan Motor and Nissan Diesel reached a basic agreement on a light-duty truck joint venture. There was also the signing of development assistance contract for air suspension of buses with China's Dongfeng Motor Corporation.

Nissan Diesel was purchased by the Volvo Group in 2007, becoming a subsidiary. After the transaction between Nissan Motor and Volvo, Nissan Diesel's business relations with Nissan Motors continued as normal and the Nissan Diesel & UD brand names remained unchanged. AB Volvo also acquired the truck division of Renault in 2001.

Starting from 2007, the OEM supply agreement between Nissan Diesel and Mitsubishi Fuso Truck and Bus Corporation became effective, with both companies supplying engines to each other for use in new buses, and supplying some buses to each other with the partner's badge. In August 2009 Nissan Diesel and Mitsubishi Fuso announced a plan of further co-operation of bus manufacturing, including the establishment of a joint company for the bus business.

On 1 February 2010, Nissan Diesel changed its name to UD Trucks. In October 2010 both companies announced that they had discontinued the discussions concerning this issue, and that the OEM supply agreement would also be ended.


UD Trucks are marketed in 70 countries. Some of the main markets are Japan, Africa, Asia and Australia.

A Volvo UD bus on trial runs in Bangalore, India

On September 12, 2012, UD Trucks of North America announced that it will no longer be part of the North American truck market. Reasons given for this decision was a combination of factors, including the continued shrinking of the cab-over-engine market segment and the accelerating cost of regulatory compliance.[6]






Nissan Diesel JA450SSN in Santarosa Euro bus body.
Space Runner RA

UD Trucks ceased its Japanese bus production in 2010,[citation needed] but in 2014 launched a new series of UD Buses for the Indian market.[7]

Former bus models:



  • UD CK10G 4x2 Chassis
  • UD CKA12H 4x2/6x4/6x2 Chassis
  • UD CKA12BT 6x2/6x4 Tractor Head
  • UD CKA12BT(X) 4x2 Tractor Head
  • UD PKD311 4x2 Chassis
  • UD PKC311 6x2 Chassis
  • UD PKC211 4x2 Chassis
  • UD PKD211 4x2/6x2 Chassis
  • UD PK215 4x2 Chassis
  • UD PK260 4x2 Chassis
  • UD PK260CT 4x2 Tractor Head
  • UD PK260MX 4x2 Dump Truck
  • UD CWA260HT 6x4 Tractor Head
  • UD CWA260MX 6x4 Dump Truck
  • UD CWA260M 6x4 Dump Truck
  • UD CWA260X 6x4 Long Dump Truck
  • UD CDA260X 6x2 Chassis
  • UD CDA260MX 6x2 Chassis
  • UD Quon CWB6B 6x4 Dump Truck
  • UD Quester GWE 6x4 Tractor Head
  • UD Quester CKE 4x2 Tractor Head
  • UD Quester GKE 6x2 Chassis


  • UD CB12 4x2 Bus chassis
  • UD CB87 4x2 Long Bus chassis
  • UD SP210 4x2 Bus chassis

US & Canada[edit]

  • UD 1100
  • UD 1200
  • UD 1300
  • UD 1300 TURBO
  • UD 1400
  • UD 1800
  • UD 1800 CS
  • UD 1800 HD
  • UD 2000
  • UD 2300
  • UD 2300 DH
  • UD 2300 LP
  • UD 2600
  • UD 2600 LP
  • UD 2800
  • UD 3000
  • UD 3300

Buses (Philippines)[edit]

LOCAL VERSIONS: Front-engined chassis:

  • CMF87L
  • CPB87N
  • SP215NSB
  • PKB212N

Rear-engined Chassis:

  • RB30R
  • RB31S
  • RB31SX - Longer wheelbase version of RB31S
  • RB46S
  • RB46SR - can be based either on RB46S or JA430SAN
  • RB46SX - Longer wheelbase version of RB46S
  • JA430SAN
  • JA450SSN
  • JP251PSN


  • JA520RAN
  • JA520SAN
  • JA530RAN
  • UA440NSM
  • UA460LSN
  • U31K/L (UA31K/L)
  • U32K/L (UA32K/L)
  • RA517

Locally used Engines:

  • FE6-A, 165PS - Fitted to early CMF87L chassis
  • FE6-B, 180PS - Fitted to CMF87L / CPB87N chassis, optional to SP215NSB
  • FE6-T (FE6-C), 205PS - Fitted to JP251PSN chassis / SP215NSB chassis
  • FE6-TA (FE6-D), 216PS - Fitted to PKB212N chassis
  • NE6, 175PS - Fitted to early CPB87N chassis
  • PD6 - Fitted to RB30R chassis
  • PE6, 235PS - Fitted to RB31S and RB31SX chassis
  • PE6-T, 280PS - Fitted to RB46S / RB46SR / RB46SX / JA430SAN chassis
  • PF6-TA (PF6-A), 320PS - Fitted to JA450SSN chassis by default
  • PF6-T, 350PS - Optional to JA450SSN chassis

Fitted engines to JDM bus chassis:

  • PE6-H - Fitted to UA31 / UA32 / UA440NSM / UA460LSN Chassis
  • RD8 - Fitted to RA517 chassis
  • RF8 - Fitted to JA520RAN / JA520SAN chassis
  • RF8-T - Optional to JA520SAN chassis
  • RH8, 350PS - Fitted to JA530RAN chassis

Chassis Bus (Fiji)[edit]

  • SP210
  • SP215
  • CB31R
  • MHPC1
  • 215P

Truck (Australia)[edit]

Diesel engines[edit]

  • NE6 Inline-6 diesel engine, 175PS Natural Aspirate
  • FE6 Inline-6 diesel engine, 175PS Natural Aspirate
  • FE6B Inline-6 diesel engine, 180PS Natural Aspirate
  • FE6-T Inline-6 diesel engine, 215PS Turbocharged + Euro1
  • NE6-T Inline-6 diesel engine, 220PS Turbocharged
  • FE6-TB inline-6 diesel engine, 260PS Turbocharged + Intercooler + Euro2
  • PE6 Inline-6 diesel engine, 230PS Natural aspirate
  • PE6-T inline-6 diesel engine, 280PS Turbocharged
  • PF6-TA inline-6 diesel engine, 320PS Turbocharged + Intercooler
  • PF6-TB inline-6 diesel engine, 350PS Turbocharged + Intercooler
  • PF6-TC inline-6 diesel engine, 375PS Turbocharged + Intercooler
  • RE8 v-8 diesel engine, 295PS Natural Aspirate
  • RF8 v-8 diesel engine, 340PS Natural Aspirate
  • RH8 v-8 diesel engine, 430PS Natural Aspirate
  • RG8 v-8 diesel engine, 350PS Natural Aspirate
  • RF8-TB v-8 diesel engine, 480PS Turbocharged + Twin Turbo Intercooler
  • RE10 v-10 diesel engine, 370PS Natural Aspirate
  • RF10 v-10 diesel engine, 395PS / 420PS Natural Aspirate
  • RH10 v-10 diesel engine, 520PS / 470PS / 450PS Natural Aspirate
  • GE13-TD inline-6 diesel engine, 370PS Turbocharged + Intercooler

See also[edit]


  1. ^ "Pär Östberg lämnar Volvo" [Pär Östberg leaves Volvo] (in Swedish). Gothenburg, Sweden: Göteborgs-Posten. 2012-08-27. Retrieved 2012-11-27. 
  2. ^ "Volvo - press release". Cision Wire. Retrieved 2006-03-21. 
  3. ^ "Volvo - press release". Cision Wire. Retrieved 2007-03-24. 
  4. ^ "Brand name". UD Trucks. Retrieved 2010-03-31. 
  5. ^ "UD Trucks to Launch Sales of Volvo Trucks to Major Customers in Japan". UD Trucks. Retrieved 2010-03-31. 
  6. ^ Ramsey, Jonathon (2012-09-23). "UD commercial trucks to vacate North American market". Autoblog.com. Retrieved 2014-02-18. 
  7. ^ 'Volvo launches UD Buses in India' on Business Standard website, viewed 2014-03-25

External links[edit]