The Mack Anthem is a series of heavy duty (Class 8) trucks built by Mack Trucks. It has a long low-drag hood and fenders. Introduced in 2018, it is designed primarily for highway use.
The Anthem is a long-hood conventional. Designed for highway use, it can have a day cab or two different sleeper compartments. It has aerodynamic aids standards and others are available. Normally a 6x4 (3 axles, 2 powered), there are also 6x2 (3 axles, one powered) models. Total loaded weight can be up to 62,000 pounds (28,000kg) and 80,000 pounds (36,000kg) including all trailers.
Advanced electronics are used for engine, chassis, and body controls, as well as maintenance.
In 2019 a new generation Bendix Wingman Fusion was available in the Anthem. It uses radar and cameras to provide emergency braking, lane departure, and blind spot warnings.[1]
Mack builds their own major components (engines, transmissions, axles, and suspensions) and promotes an integrated design. Most vendor components are also available, but engine choice is very limited.
Engines
The Anthem is available with three Mack diesels, the MP7, MP8, and MP8HE. A Cummins Westport ISX12N natural gas engine is also available[2]
The Mack MP7 is the base engine in the Anthem. It is a 659 cubic inches (10.8L)overhead camturbochargedinline six-cylinderdiesel engine. It develops 325 to 425 horsepower (242 to 317kW) and 1,260 to 1,560 pound force-feet (1,710 to 2,120N⋅m) of torque.[3]
The Mack MP8 engine is a 783 cubic inches (12.8L) overhead cam turbocharged inline six-cylinder diesel engine. It develops 434 to 505 horsepower (324 to 377kW) and 1,460 to 1,760 pound force-feet (1,980 to 2,390N⋅m) of torque.
The Mack MP8HE engine is a variant of the MP8 with a mechanical drive behind the turbocharger in the exhaust stream. This allows more heat energy to be used for better fuel economy.
The Cummins WestportISX12N is a 762 cubic inches (12.5L) overhead cam turbocharged inline six-cylinder natural gas engine. It develops 400 horsepower (300kW) and 1,450 pound force-feet (1,970N⋅m) of torque.[4]
Transmissions
All Mack transmissions have aluminum cases and three countershafts. Both Mack and Fuller have manual and automated shifting models. Allison transmissions are available as fully automatic only.
Mack mDRIVE automated manual is the base transmission. It has no clutch pedal and shifts itself on demand. The driver can override it but it is normally driven in "D". It can have 12, 13, or 14-speeds.[5] Other Mack manual transmissions have 8-18 speeds.
Eaton-Fuller UltraShift automated shifting systems are available on all of their transmissions from 9- to 18-speeds.
Allison RDS series 6-speed transmission is available. The RDS is a fully automatic planetary gear transmission with a lock-up torque converter.
Frame
A ladder frame with beam axles is used. There is a single front axle on semi-elliptical leaf springs. The base rear suspension is a Mack tandem with two powered axles, a single rear drive axle with an undriven pusher axle is available. Wheelbases are from 174 to 203 inches (440 to 520cm)
A set-back front axle is used. Set back axles, where the hood extends in front of the axle, are used when overall length is not important. They let the fenders and bumper taper back to the tires, allowing less wind drag.
In 2020 Mack introduced the Command Steer system. An additional on-demand electric power steering pump is operated electronically. This allows easier steering, will help dampen steering feedback, steady driving, and can compensate for side-winds, uneven pavement, and braking on different surfaces. A very light feel and automatic return-to-center feature are useful off-road, at slow speed, and in backing.[6]
Front axles are available in 12,000 and 14,000 pounds (5,400 and 6,400kg) ratings from Mack, Dana-Spicer, and Meritor.
Mack powered axles have the drive carrier on top of the housing instead of the front of it like other manufacturers. This lets the driveshafts be in line from the transmission to and between the axles.
Other powered axles are available from Dana-Spicer and Meritor. These have front mounted carriers and in tandemsthe two axle housings are different.
The mRIDE tandem has tapered leaves that rock above the bogey pivot then go out and above the axles. Struts go from the bottom of the bogey pivot out and under the axle. They are rated at 40,000,46,000, and 52,000 pounds (18,000,21,000, and 24,000kg).
The Twin Y air suspension has trailing arms that fork to the rear and attach to both the top and bottom of the axle. There is an air bag behind the axle. Each axle is sprung individually. They are rated at 40,000 pounds (18,000kg).
A Liftable pusher axle is used in a 6x2 arrangement, where only the rear axle is driven. They are lighter, have less drag, and can be raised when not needed. This allows better fuel economy and longer tire life.
Other tandems with mechanical or air suspensions are available from Mack, Chalmers, and Hendrickson.
Applications
The Anthem is designed as a fuel-efficient highway semi-tractor only.
Regional service is when runs are one day long. Regional tractors usually have a day cab, short wheelbase, and are often used for fleet service. They often can be used with a lower power engines and/or a 6x2 (three axles, rear only driven) arrangement.
Over-the-road is when one or two drivers live in the cab for extended periods. Over-the-road tractors are often owned by their drivers. With sleeper compartments and longer wheelbases they usually need more powerful engines than regional tractors.
Related Research Articles
The Ford Super Duty is a series of heavy-duty pickup trucks produced by the Ford Motor Company since the 1999 model year. Slotted above the consumer-oriented Ford F-150, the Super Duty trucks are an expansion of the Ford F-Series range, from F-250 to the F-600. The F-250 through F-450 are offered as pickup trucks, while the F-350 through F-600 are offered as chassis cabs.
The M939 is a 5-ton 6×6 U.S. military heavy truck. The basic cargo versions were designed to transport a 10,000 pounds (4,500 kg) cargo load over all terrain in all weather. Designed in the late 1970s to replace the M39 and M809 series of trucks, it has been in service ever since. The M939 evolved into its own family of cargo trucks, dump trucks, semi-tractors, vans, wreckers, and bare chassis/cabs for specialty bodies. 44,590 in all were produced.
The Volkswagen Constellation is the flagship truck produced by the Brazilian manufacturer Volkswagen Truck & Bus since 2005. The line covering the 13-57 tonne gross combination mass (GCM) segment. It is produced at Resende in Brazil, and is primarily for the South American market.
The Diamond T Company was an American automobile and truck manufacturer. They produced commercial and military trucks.
The Mack F series was the third generation of cabover trucks from Mack Trucks. Its production began in 1962 and ended in 1981. It was produced primarily as a set-forward axle truck but a setback axle version was shipped overseas. The cab came in a 50-inch (1371.6 mm) day cab. Sleeper models included a 72-inch (1828.8 mm), 80 inch (2032 mm) and later a "bustle back" was added that lengthened the sleeper to 86 inches (2184.4 mm).
The International TranStar is a range of Class 8 trucks produced by Navistar International for North America. Produced nearly exclusively as a semitractor, the product range is focused towards local delivery and regional shipping.
The International Loadstar is a series of trucks that were produced by International Harvester from 1962 to 1978. The first product line of the company developed specifically as a medium-duty truck, the Loadstar was slotted between C-Line pickup trucks and the heavy-duty R-series. Following the discontinuation of the R-series, the Loadstar was slotted below the Fleetstar and Transtar conventionals.
The International Fleetstar is a series of heavy-duty trucks that was produced between 1962 and 1977 by International Harvester. Slotted above the Loadstar and below the Paystar and Transtar conventionals introduced after it, the Fleetstar was the first truck line that International designed specifically for vocational use.
The Chevrolet Van or Chevy Van is a range of vans that was manufactured by General Motors from the 1964 to 1996 model years. Introduced as the successor for the rear-engine Corvair Corvan/Greenbrier, the model line also replaced the panel van configuration of the Chevrolet Suburban. The vehicle was sold both in passenger van and cargo van configurations as well as a cutaway van chassis that served as the basis for a variety of custom applications.
The M915 is a tractor unit used for line-haul missions by the United States Army. Designed for use on improved roads, it does not have a driven front axle.
The Mack Pinnacle is a series of heavy duty trucks produced by Mack Trucks. Introduced in 2006, the Pinnacle is the successor of the Mack Vision. Currently, the product line is sold in the United States and Canada. In Venezuela and Peru, the Pinnacle is marketed as the Mack Vision Elite.
The Mack M123 (G792) was a 10-ton 6x6 semi-tractor introduced in 1955. The Mack M125 was a heavy cargo truck version of the M123. The M123 was used to tow tank transporter trailers while the M125 towed field artillery pieces.
The Mack MC/MR series, also known as the "Cruise-Hauler", is a cabover truck first introduced in 1978. It is of a distinct "set back front axle" design, with the driver compartment mounted ahead of the front axle and with a large, flat, divided windscreen covering almost half of the truck's frontal aspect.
The 6-ton 6×6 truck was a family of heavy tactical trucks built for the United States Army during World War II. The basic cargo version was designed to transport a 6- short ton (5,400 kg) cargo load over all terrain in all weather. The chassis were built by Brockway Motor Company, The Corbitt Company, The Four Wheel Drive Auto Company (FWD), Ward LaFrance Truck Corporation, and White Motor Company. They were replaced by the M54 5-ton 6x6 trucks in the 1950s.
The 5‑ton 6x6 truck, officially "Truck, 5-ton, 6x6", was a class of heavy-duty six-wheel drive trucks used by the US Armed Forces. The basic cargo version was designed to transport a 5-ton (4,500 kg) load over all roads and cross-country terrain in all weather. Through three evolutionary series there have been component improvements, but all trucks were mechanically very similar. They were the standard heavy-duty truck of the US military for 40 years, until replaced by the Medium Tactical Vehicle (MTV) beginning in 1991.
The Mack Granite is a series of heavy duty and severe service trucks built by Mack Trucks. It has a long, low-profile hood and a high-visibility cab. Designed as straight trucks for local construction, waste removal, and other vocational jobs, it is also available as a semi-tractor. Introduced in 2001, it remains in production as of today.
The Mack TerraPro is a series of heavy duty and severe service trucks built by Mack Trucks. They are a forward control cab-over-engine type, where the driver sits in front of the axle. A flat front has two large windshields. A spotting feature is small notches in the lower inside of the windshields. It is used in refuse service and for construction concrete pumps.
The Mack LR(Low Ride) is a series of heavy-duty trucks built by Mack Trucks. They are a forward control cab-over-engine type, where the driver sits in front of the axle. A flat front has two large windshields. The cab is very low-profile and has dual driving controls with a stand-up driving position on the right side. It is used in refuse service with front, side, and rear-loading refuse compactor bodies. Introduced in 2015 it remains in production in 2020.
The Mack MD is a series of medium-duty trucks built by Mack Trucks. It has a short, low-profile hood and a high-visibility cab. It is designed as straight trucks for local delivery, construction, and other vocational jobs. The MD was introduced in February 2020 entered full production in July 2020.
Texmaco Perkasa is a family of medium-duty commercial vehicles manufactured by Indonesian automaker PT Wahana Perkasa Auto Jaya, which is a company under the Texmaco group. Started production after the New Order in 1999 by making trucks, and in 2001 finally participated in producing variants of bus vehicles. Perkasa means "mighty" in Indonesian. These vehicles are well known in Indonesia for being the standard trucks and buses operated by the Indonesian Armed Forces. Perkasa truck was first launched in late 1998, with a claim of 90% local content. TNI and Polri are the first customers, intended as military vehicles and tactical vehicles. Perkasa stopped production in 2004 after the Texmaco group went bankrupt by IBRA.
This page is based on this Wikipedia article Text is available under the CC BY-SA 4.0 license; additional terms may apply. Images, videos and audio are available under their respective licenses.
