Dana / Spicer D190-557

Dana Spicer D190-557
D190557GTP

The Dana Spicer D190 is a premium, heavy-duty tandem drive axle differential designed to support the most extreme vocational and on-highway applications. Known for its exceptional strength, high torque capacity, and superior durability, the D190 is engineered to handle the increased demands of trucks operating in challenging environments such as logging, mining, oilfield services, and heavy construction.

Featuring a dual-reduction gear system, the D190 delivers optimized power transfer and excellent traction even under the heaviest loads. With a gross axle weight rating (GAWR) of up to 50,000 lbs, it is ideal for vehicles operating in high gross combination weight (GCW) scenarios. Dana’s advanced materials, heat treatment, and precision machining contribute to the D190’s long service life, high reliability, and reduced maintenance requirements.

Technical Specifications

General Features:

• Heavy-duty tandem drive axle differential for severe-service vehicles
• Dual-reduction gearing for high-torque capacity and durability
• Suitable for both on-highway and vocational/off-road applications

Axle Rating & Load Capacity:

• Gross Axle Weight Rating (GAWR): 50,000 lbs (22,680 kg)
• Gross Combination Weight (GCW): up to 160,000 lbs (72,575 kg)

Gear Design and Ratios:

• Gear Design: Spiral bevel primary reduction and helical inter-axle gearing
• Ring Gear Diameter: 19 inches (483 mm)
• Input Shaft Spline Count: 39-spline (standard)
• Available Gear Ratios:
  • 3.07, 3.31, 3.55, 3.70, 3.91, 4.10, 4.33, 4.56, 4.78, 5.13, 5.29, 5.38, 5.57, 5.86

Construction and Materials:

• Carrier Housing: Cast ductile iron for exceptional durability
• Gear Material: Heat-treated alloy steel for strength and wear resistance
• Differential Case: Reinforced high-strength design for extended service life

Lubrication and Cooling:

• Pressurized internal lubrication system to enhance cooling and oil distribution
• Optional external oil pump available for extreme-duty applications
• Oil Capacity: Approx. 22–24 quarts per axle depending on configuration

Traction and Locking Features:

• Inter-axle differential lock (power divider lock) standard
• Optional driver-controlled differential lock for maximum traction
• Designed for use in poor traction or off-road conditions

Suspension & Brake Compatibility:

• Compatible with multiple suspensions: air ride, mechanical, walking beam, and heavy-haul setups
• ABS-ready hubs available
• Supports a range of track widths for OEM flexibility

Serviceability and Maintenance:

• Modular carrier design allows easier service and part replacement
• Extended service intervals depending on lubricant and duty cycle
• Common parts shared with other Dana heavy-duty axles for simplified fleet support

Applications:

• Heavy construction and dump trucks
• Logging and forestry vehicles
• Oilfield service trucks
• Mining and off-road haulers
• Heavy-haul transport
• Refuse and sanitation trucks operating in extreme conditions

Key Benefits:

• Built to handle extreme torque loads and harsh environments
• Dual-reduction gearing ensures smooth, efficient power delivery
• High GAWR and GCW capacity for maximum payload flexibility
• Long-lasting components reduce total cost of ownership
• Backed by Dana’s extensive support network and parts availability