News
- Apr. 18, 2025 The civil engineering package has been updated with the addition of “Hat+H (Hat-type sheet pile for Deep excavation)” and “STEEL PIPE PILES with ribs x Sat-in Pile Foundation”.
- Apr. 02, 2025 Designing Metal TranTixxii to be Used in the Largest Quantity in the World on Taiwanese Temple Roof
- Mar. 10, 2025 Nippon Steel Obtained SuMPO EPD Certifications for Pipes and Tubes Used in Chemical Industry and for Boilers
- Dec. 12, 2024 Titanium with Aesthetic Appearance “TranTixxii” Service Life Warranty Launch —Launch of a maximum 150-year warranty through additional extensions—
- Oct. 31, 2024
Launch of the overseas version of ProStruct™, a solution brand for the construction industry
—Expanding the packaged series of steel materials and solution technology to overseas construction markets— - Oct. 30, 2024 Participation in the Japan Pavilion at ADIPEC, the Energy-Related Exhibition in the Middle East
- Oct. 07, 2024 Nippon Steel Obtained SuMPO EPD (Formerly EcoLeaf) Certificationsfor Its Hot Extruded Steel Shapes
- Jul. 10, 2024 Long-term OCTG supply contract with Aker BP renewed –Strengthens strategic partnership through stable supply of OCTG–
- Jul. 03, 2024 Long-term OCTG supply contract with Equinor renewed –Strengthens strategic partnership through stable supply of OCTG–
- Jun. 14, 2024 Acceptance of Orders for High-Alloy Seamless OCTG and Employment of Green Steel “NSCarbolex Neutral” Finalized for CCS to Be Used in Construction Project for Blue Ammonia Manufacturing Plant in the State of Qatar
- May. 15, 2024 Adoption of Coating Cycle Extension Steel “CORSPACE” for the First Time in Overseas ODA Bridge Construction
- Apr. 23, 2024 Participation in OTC, an Energy-Related Exhibition in the U.S.
- Mar. 22, 2024 Designing Titanium TranTixxii wins the European “iF DESIGN AWARD 2024” —The world's first non-ferrous metal material to receive the award—
- Sep. 28, 2023 The Adoption of “NSCarbolex Neutral” steel product for geothermal project in the Netherlands operated by 85 Degrees Renewables.
- Mar. 11, 2022 Nippon Steel's TranTixxii and NIPPON STEEL Stainless Steel Corporation's NSSC220M featured on the roof of an international conference center in Jiangsu, China
- April 22, 2021 Nippon Steel to Launch ZAM®-EX high corrosion resistant coated steel sheets for overseas markets
- Oct. 01, 2020 Our new product "FeLuceTM" (hairline-finished electroplated steel sheet) wins the Good Design Award 2020 ~Our first steel sheet to win the Good Design Award~
- Feb. 14, 2019 NSSMC Receives Shell’s Supplier Award
- Jul. 30, 2018 Execution of Strategic Partnership with BP Oman
- Jul. 30, 2018 "The beauty of distinctive gradations make people feel nature" was posted.
- Jul. 26, 2018 VAM® 21 HT CLEANWELL® DRY ST First Running
- Jul. 19, 2018 Steel Wires Joint Venture Company for Cold Heading and Forging in USA (NSCI) holds an Opening Ceremony
- Jun. 27, 2018 NSSMC and Standard Steel Receive TTX “Excellent Supplier 2017” Award
- May. 29, 2018 NSSMC Named a Top 100 Global Innovator in 2017 for Sixth Consecutive Year
- Apr. 25, 2018 Steel Wires Joint Venture Company for Cold Heading and Forging in USA (NSCI) Starts Commercial Production
- Apr. 17, 2018 Strengthening Supply System for Ultra-high-tensile Steel Sheets New CGL to be installed at Kimitsu Works
- Feb. 27, 2018 Nippon Steel & Sumikin Crankshaft, NSSMC’s manufacturing and sales subsidiary of crankshafts in the U.S., earns Diamond Supplier Award from Navistar
- Aug. 04, 2017 NSSMC’s proprietary titanium product TranTixxii™ is adopted for cladding of a theater in Jiangsu Province, China
Permanent magnet retarder
This is our eddy-current brake system using the magnetic force of a powerful neodium permanent magnet, the first in the world.

Outline
The Neotard Retarder is the world's first eddy-current brake system that generates braking force using the magnetic force of the world's strongest neodymium permanent magnet. This lightweight, compact system is installed as the auxiliary brake system on many heavy-duty trucks and buses. To comply with environmental regulations that are becoming stricter every year, automotive manufacturers are reducing running resistance and engine displacement for better fuel efficiency and emission control. However, these measures work against braking performance.
Did you know that the number of major accidents by commercial vehicles per year is about 3,700, and that trucks cause about 70% of these? Sixty percent of these truck accidents are collisions. It is always too late when one says, "If only the brakes had worked better."
Weighing only 40 kg, the permanent magnet-type retarder has drastically changed the image that retarders are heavy and bulky. It promises an even higher class of safety and comfort.

Characteristics
- The world's smallest and lightest, and easy to install
- Non-contact brakes make troublesome maintenance unnecessary
- Virtually no power consumption compared with electromagnetic retarders
- High praise from users
- "Once you've tried it, you can't drive a truck without it." Every driver who has driven a truck with the permanent magnet-type retarder says the same thing. Do you think that retarders are expensive and troublesome? Do you think they are difficult to maintain?
The permanent magnet type is radically different -- a breakthrough over traditional retarders. So what's the secret?
No. 1 is safer operation.
- - You prevent accidents with powerful braking action -
- The braking power of the Neotard Retarder is roughly equal to that of an engine brake and exhaust brake combined. In high-speed driving, deceleration time is reduced 40%. Braking distance is shortened by over 30%. In addition, the brake lining is kept cool, which allows for full braking response in an emergency, giving the driver a greater sense of security.
No. 2 is driver advantages.
- - Less fatigue thanks to easy handling -
- You can count on the Neotard Retarder for braking on downhill grades of up to 5%. Simply set the lever once and drive as normal. It works strongly but also softly, which means no concern about your load shifting. The frequency of foot braking is cut by about 50%. This greatly contributes to less driver fatigue.
No. 3 Maintenance
- - Maintenance-free -
- When you think of retarders, do you think of troublesome maintenance? It's true that traditional retarders had annoying problems like retarder coil burnout and oil leaks, and periodic oil changes were an extra job. However, the Neotard Retarder requires no maintenance at all. And, thanks to its simple construction, there is no need to worry about failure.
No. 4 is its business merit.
- - A quick return on your investment -
- Once the retarder is installed, the frequency of applying the foot brake decreases and the brake lining temperature can be kept low. As a result, the brake lining wear also slows down dramatically. As much as 6-times longer lining life can be expected. Uneven tire wear is also reduced, meaning a longer life for your tires. In this way, your investment will be returned before you know it.
The data itself proves the safety and economy performance.
![[Deceleration Performance (On level road: from 100 km/h to 80 km/h)] Exhaust brake only: Required time 16Sec. Neotard + Exhaust brake: Required time 10Sec.](/en/product/railway-automotive-machinery-parts/list/images_v3/13/magnet_fig_02.gif)
![[Stopping distance with brake (Full braking at 80 km/h)] Without Neotard Retarder: Stop distance75m With Neotard Retarder: Stop distance50m(35% improvement)](/en/product/railway-automotive-machinery-parts/list/images_v3/13/magnet_fig_03.gif)
![[Brake application frequency (175 km between Miyoshi IC and Yamaguchi IC on the Chugoku Motorway)] Without Neotard Retarder: Footbrake applying frequency50 With Neotard Retarder: Footbrake applying frequency25(50% improvement)](/en/product/railway-automotive-machinery-parts/list/images_v3/13/magnet_fig_04.gif)
![[Brake lining life (per 1 mm lining thickness)] Without Neotard Retarder: Traveled distance30,000 km With Neotard Retarder: Traveled distance180,000 km(6 times!)](/en/product/railway-automotive-machinery-parts/list/images_v3/13/magnet_fig_05.gif)
![[Tire life] Without Neotard Retarder: Traveled distance230,000 km With Neotard Retarder: Traveled distance280,000 km(20% longer)](/en/product/railway-automotive-machinery-parts/list/images_v3/13/magnet_fig_06.gif)
* The above data was obtained from tests carried out on a 20-ton GVW truck. It should be considered only as an example, and none of the figures should be considered a guarantee.
Explore
Mechanism
- Structure
- The construction of the permanent magnet type retarder is very simple. There are two main components: a rotor and a stator. The stator is attached at the rear of the transmission. It has a series of magnets with strong magnetic force on its interior. The rotor is a steel ring with many fins.
- Operation
- The operation of the permanent magnet-type retarder is also simple. It is switched ON and OFF by compressed air supplied by the vehicle itself. This assures high reliability and superb response.

- Operating principle
- The operating principle of the permanent magnet-type retarder is also simple. A series of magnets inside the stator is arranged so that any given magnetic pole faces the opposite magnetic pole of the adjacent magnet. When the retarder is switched OFF, no force is exerted on the rotor because the magnets are positioned straddling the pole pieces, and the magnetic circuit moves only through the pole pieces.
When the retarder is switched ON, a compressed-air cylinder rotates the magnet series by one-half magnet length, repositioning all the magnets directly beneath the pole pieces. When this happens, the magnetic circuit bridges the pole pieces and passes through the rotor, generating an eddy current on the inner surface of the rotor. This becomes the source of the braking force.


Controls
- The permanent magnet-type retarder is easy to operate.
-
- Pull the exhaust brake lever two steps toward you The retarder will operate when you take your foot off the accelerator pedal.
- Move the foot brake interlock switch to the Interlock side to turn it ON The retarder will operate when you step on the foot brake.
Installed models
The Neotard Retarder is installed in the trucks and buses listed below.
type | CAR TYPE | Assignment | Engine type | |
---|---|---|---|---|
Turbocharged | Non-turbocharged | |||
Semi tractor | Optional | Optional | ||
Full tractor | Optional | Optional | ||
Cargo (GVW20~25t) |
6×4 | Standard on GVW 25, 23t trucks. Others depending on the model. | Standard on GVW 25, 23t trucks. Others depending on the model. | |
6×2 | Standard on GVW 25, 23t trucks. Others depending on the model. | Standard on GVW 25, 23t trucks. Others depending on the model. | ||
8×4 low floor | Standard | Standard | ||
6×4 low floor | Standard | Standard | ||
Dump truck | Optional | Optional |
* Available on the 4-ton model (FORWARD).
type | CAR TYPE | Assignment | Engine type | |
---|---|---|---|---|
P11C | K13C | |||
Semi tractor | SH | − | Optional | |
Full tractor | FN | − | Standard | |
Cargo (GVW22~25t) |
FS | 6×4 | − | Selection option (Neotard Retarder or engine retarder) |
FR | 6×2 | Selection option (Neotard Retarder or engine retarder) | Selection option (Neotard Retarder or engine retarder) | |
FN | 6×2 front | Optional | Optional | |
FW | 8×4 low floor | Selection option (Neotard Retarder or engine retarder) | Selection option (Neotard Retarder or engine retarder) | |
FQ | 6×4 low floor | − | Selection option (Neotard Retarder or engine retarder) | |
Cargo (GVW16~20t) |
FN | 6×2 front | − | Optional |
FQ | 6×4 low floor | − | Optional | |
FH | 4×2 | − | Optional |
type | CAR TYPE | Assignment | Engine type | |
---|---|---|---|---|
Turbocharged | Non-turbocharged | |||
Cargo and dump (GVW20~25t) |
FV | 6×4 | − | J,M,P,S,T,U |
FU | 6×2 | L,N,P | J,L,N,P,S,T | |
FT | 6×2 front | L,N,R,T,V | L,N,R | |
FS | 8×4 low floor | − | R,T | |
FY | 6×4 low floor | J,T | J,N,R | |
FP | 4×2 | − | F,H,J,L,N,T |
* Letters show the available wheelbase types
* All optional
Isuzu Motors | Hino Motors | Mitsubishi Motors |
---|---|---|
GALA Series | S'ELAGA R Series | AERO Series |
Installed as standard on large vehicles for highways Installed as an option on sightseeing rental vehicles Installed as an option on mid-size vehicles |
Installed as standard on large vehicles for highways Installed as an option on sightseeing rental vehicles |
Installed as an option on large vehicles (Larger vehicles: EX sightseeing vehicles and larger) |
- The above lists are for information only and may differ depending on specifications.
- Ministry of Land, Infrastructure and Transportation regulations make installation of retarders mandatory on Class 2 Motorway Buses.
- Contact dealer for details.
Contact Information
For further product information
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