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Axle Carriers

Our proprietary Mack® axle carriers deliver the power, performance and efficiency when you need it most.

Axle Carriers

Our proprietary Mack® axle carriers deliver the power, performance and efficiency when you need it most.

Mack Axle Carriers-YouTube
AXLE CARRIERS

Carry on.

See why Mack carriers and power dividers are the only option when you’re hauling heavy.

Mack axle carriers combine innovative design with durable dependability for features and performance that you won't find anywhere else.

Double reduction gear

Dual-Reduction Architecture

Double reduction gearing spreads and balances loading over two gear sets to maximize durability.

Mack Trucks Axles Durapoid
Mack Trucks Anthem Black

Energy-Efficient Design

Mack-patented Durapoid bevel gear design eliminates localized stress and tooth-end loading to improve fuel economy, maximize energy efficiency and extend gear life.

A key component to Mack axle carriers, Mack power dividers deliver inter-wheel and inter-axle power divider capabilities to keep you moving, even when your wheels aren't.

Mack Trucks InterAxle_CGI

Inter-Axle Power Divider

Mack’s inter-axle power divider automatically diverts up to 75% of torque from the axle with no traction to the axle that has traction. No driver intervention is needed.

  • Transfers torque between the outer cam and inner cams using two rows of wedges
  • Outer cam drives the front axle while the inner cam drives power to the rear axle
  • Features no gears to reduce friction loss during torque transmittal
  • Maximizes pulling power and efficiency while reducing unnecessary tire wear
Mack Trucks Inter-Wheel Power Divider_CGI

Inter-Wheel Power Divider

Mack’s proprietary inter-wheel power divider works in the same manner as the inter-axle power divider, distributing up to 75% of torque from wheel to wheel to preserve traction.

  • Optional feature that transfers torque without any driver intervention required
  • Can be used with the inter-axle power divider for improved traction in extremely slippery conditions
  • Works at high speeds
  • Mack Trucks Inter-Axle Power Divider

    Inter-Axle Power Divider

    By automatically transferring up to 75% of torque to the axle with traction, our inter-axle power divider helps you maximize traction and efficiency to keep you moving.

  • Mack Trucks Inter-Wheel Power Divider

    Inter-Wheel Power Divider

    The optional inter-wheel power divider transfers up to 75% of torque between wheels automatically so drivers get out of poor traction conditions and on the road quickly.

  • Specs

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    AXLE MODEL

    Ratings Pounds
    (kg)

     GCW Highway

     Standard Ratios

     Ring Size
    Gear Pitch
    (mm)

     Axles Shaft
    Spline Size
    (mm)

     Housing
    Box Size
    (mm)

     Wall Thickness

     S38/40

    34,000
    (15,436)

     80,000
    (36,320)

    2.28, 2.47, 2.64, 2.79,
    2.85, 3.08, 3.25, 3.36,
    3.42, 3.55, 3.70, 3.90,
    4.11 Optional Ratios
    Available

     15.31
    (388.91)

     2.10 (53.3)
    41 Teeth

     1.88 (47.8) /
    2.00 (50.8)

    0.37 (9.5) Std/DualTrac™
    0.43 (11.0) Std/DualTrac
    0.56 (14.3) Wide Track 

     S48/50

    40,000
    (18,160)

     145,000
    (65,830)

     2.28, 2.47, 2.64, 2.79,
    2.85, 3.08, 3.25, 3.36,
    3.42, 3.55, 3.70, 3.90,
    4.11, 4.33, 4.63, 4.88,
    5.29, 5.86, 6.14,6.43,
    6.83, 7.17

     15.31
    (388.91)

     2.10 (53.3)
    41 Teeth

     1.88 (47.8) /
    2.00 (50.8)

     0.37 (9.5) Std/DualTrac 0.43
    (11.0) Std/DualTrac 0.50
    (12.7) Standard Track 0.56
    (14.3) Wide Track

     S58/60

    44,000
    (19,976)

     44,000
    (19,976)

     3.70, 3.90, 4.11, 4.33,
    4.63, 4.88, 5.29, 5.86
    Available in Hypoid
    Ratios Only

     15.31
    (388.91)

     2.10 (53.3)
    41 Teeth

     2.00 (50.8)

     0.50 (12.7) Standard Track
    0.56 (14.3) Wide Track

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