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BorgWarner 48-11 - chain or clutch pack

neeginan

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A simple question that the internet and Dr Google cannot seem to provide a clear answer to.

Does the 48-11 use a chain instead of a clutch pack like the 44-44?

Found this statement that makes it sound like both the 48-11 and 48-12 use a chain.

The heart of the Ram 1500’s four-wheel-drive system is one of two electronically controlled BorgWarner transfer cases. The BorgWarner 48-12 offers part-time 4WD operation with 2-Hi, 4-Hi, and 4-Lo settings, and the BorgWarner 48-11 offers on-demand 4WD operation with 4Auto, 2-Hi, 4-Hi, and 4-Lo settings. The 4Auto set-it-and-forget-it setting provides full-time 4WD, which functions automatically to provide maximum traction in all road conditions. New for 2019, both transfer cases have a larger-diameter mainshaft and the chain and sprocket have been relocated for improved bearing support and improved lubrication. Also, the 48-11’s 4Auto on-demand system is enhanced for quicker response and higher front output torque capacity. Each transfer case is engaged via easy-to-use push-button controls, and each has a low-range ratio of 2.64:1, which helps create increased low-speed torque capability off-road.
 

neeginan

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Well I found a site that talks about improved clutch control, so I guess it is still a clutch pack for the 48-11. so it seems.
 

Techguy2000

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Yes it is a clutch, here is a thread on the subject with some great videos that @AnthonyD1978 made
 

RT Molinari

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Well I found a site that talks about improved clutch control, so I guess it is still a clutch pack for the 48-11. so it seems.
Yup, this is copied from the BW website, "The heart of BorgWarner’s new EMOD transfer case is a motor-driven rotational cam mechanism which provides both robust clutch control and range shift function. The active clutch actuation technology delivers higher torque output, linear clutch response and pre-emptive clutch locking torque with zero rear wheel spin. For hill parking, the system offers the capability to hold front/rear locking torque when the ignition is off. In addition, the EMOD transfer case is equipped with BorgWarner’s HY-VO® driveline chain, optimized for high efficiency and durable performance."
 

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