Dana Spicer D190 Series

Quick Facts

Manufacturer: Dana Incorporated
Brand: Spicer
Product Family: D190 Series
Axle Type: Single-reduction heavy-duty tandem drive axle
Drive Configuration: 6×4
Primary Models: D52-190 and D60-190
Tandem Capacity Range: 52,000 to 60,000 lb
Maximum Published Nominal GCW: Up to 225,000 lb depending on duty cycle and application approval
Published Ratio Range: 3.42:1 to 7.17:1
Primary Applications: Construction, heavy haul, logging, oilfield, refuse, and severe vocational work
Gearing Design: Extra-wide face-width gearing
Differential Options: Inter-axle differential lock and optional driver-controlled wheel differential locks
Wheel-End Options: Spicer LMS and LMSi hub systems
Notable Options: On-demand lubrication pump, electromagnetic retarder, central tire inflation, wide-track housings, and welded suspension brackets
Primary Design Goal: Provide high capacity, durability, and traction for severe-service trucks

Overview

The Dana Spicer D190 Series is a family of heavy-duty tandem commercial truck drive axles designed for trucks operating under high loads and demanding conditions.

The family includes the D52-190 with a 52,000-pound tandem rating and the D60-190 with a 60,000-pound tandem rating. These axles are used in construction, heavy-haul, logging, oilfield, refuse, and other severe vocational applications.

The D190 uses extra-wide gear faces, high-capacity bearings, large wheel-differential components, forged steel differential cases, and heavy axle housings. These features allow the axle to handle higher drivetrain torque and heavier vehicle loads.

Dana offers multiple traction, braking, suspension, wheel-end, and tire-management options. Available equipment can include driver-controlled wheel differential locks, a carrier-integrated electromagnetic retarder, central tire inflation, wide-track housings, and integrated welded suspension brackets.

The D190 is not primarily a lightweight highway axle. It is intended for applications where strength, load capacity, traction, and long-term durability are more important than minimizing axle weight.

Key Characteristics

The D190 Series uses extra-wide face-width ring-and-pinion gearing. The increased gear contact area provides additional strength under high torque and heavy vehicle loads.

A high-capacity gearing and bearing system supports high-horsepower and high-torque engines used in heavy-haul and severe-service trucks.

The ring gear is retained with 16 large, fine-pitch M20 fasteners. This arrangement provides high clamp load and helps maintain reliable gear attachment under demanding operation.

An integrated ring-gear and wheel-differential mounting system eliminates a traditional bolted joint. The large wheel-differential gearing provides the strength needed for severe vocational applications.

The integral pinion cage and carrier increase structural strength while removing a potential lubricant leak path.

A patented on-demand lubrication pump supplies oil where it is needed while helping prevent the excess heat associated with unnecessary continuous pumping.

The D190 also uses a patented axle breather that permits airflow without requiring conventional breather maintenance.

How the Axle or Differential Works

The D190 tandem consists of a forward drive axle and a rear-rear drive axle connected by an inter-axle driveshaft.

Engine torque travels through the transmission and main driveshaft to the forward axle. The forward carrier’s power divider sends torque to the forward ring-and-pinion assembly and through the output shaft to the rear-rear axle.

An inter-axle differential permits the forward and rear-rear axles to rotate at slightly different speeds during normal operation. This compensates for differences caused by turns, tire circumference, loading, and road surfaces.

Each axle contains a wheel differential that divides torque between its left and right wheels. The differential allows the outside wheel to rotate faster than the inside wheel during a turn.

The inter-axle differential lock can restrict speed differences between the two drive axles. Optional wheel differential locks can also restrict speed differences between the left and right wheels.

The ring-and-pinion gears create the final-drive reduction. A 5.38:1 ratio means the driveshaft turns approximately 5.38 times for each complete rotation of the drive wheels.

For a broader explanation, see How Commercial Truck Axles and Differentials Work.

Axle Position and Function

The forward D190 axle is positioned ahead of the rear-rear axle. It receives torque from the transmission and contains the power divider, inter-axle differential, forward wheel differential, and output assembly.

The rear-rear axle receives torque through the short inter-axle driveshaft. Its carrier distributes power between the rear wheels.

Together, the two axles create a 6×4 drive configuration and provide four driven wheel positions.

The tandem supports the rear portion of the truck while handling engine torque, braking forces, suspension loading, road shock, and chassis movement.

The suspension helps divide weight between the two drive axles. Actual load distribution depends on suspension design, body or fifth-wheel position, axle spacing, frame configuration, terrain, and vehicle loading.

Common Specifications

Axle Configuration: Heavy-duty tandem drive axle
Drive Layout: 6×4
Reduction Type: Single reduction
Primary Models: D52-190 and D60-190
D52-190 Maximum GAW: 52,000 lb
D60-190 Maximum GAW: 60,000 lb
Maximum Published Nominal GCW: 225,000 lb depending on duty cycle
Published Ratio Range: 3.42:1 to 7.17:1
Common Ratios: 3.42, 3.58, 3.73, 3.91, 4.10, 4.30, 4.56, 4.78, 5.25, 5.38, 5.57, 6.14, 6.83, and 7.17
Nominal Ring-Gear Diameter: Approximately 18.5 inches
Axle-Shaft Body Diameter: Approximately 2.25 inches
Axle-Shaft Splines: 46 splines
Spline Diameter: Approximately 2.35 inches
Housing Wall Thickness: Approximately 16 mm at the spring-seat area in referenced configurations
Differential Cases: Forged and heat-treated steel
Ring-Gear Fasteners: 16 fine-pitch M20 fasteners
Lubrication System: Patented on-demand high-efficiency pump
Traction Options: Inter-axle differential lock and driver-controlled wheel differential locks
Wheel-End Options: Spicer LMS and LMSi hub systems
Additional Options: Electromagnetic retarder, central tire inflation, wide-track housings, and welded suspension brackets

Specifications and ratings vary by model, duty cycle, and application approval.

Axle Ratios and Gearing

The D190 Series provides ratio coverage from 3.42:1 through 7.17:1. This broad range supports highway heavy haul, construction, logging, refuse, oilfield, and low-speed vocational operation.

Ratios such as 3.42, 3.58, and 3.73 may be used in highway-oriented heavy-haul vehicles with sufficient engine torque and compatible transmission gearing.

Ratios such as 3.91, 4.10, 4.30, and 4.56 provide a balance between road speed, startability, and grade performance.

Deeper ratios such as 4.78, 5.25, 5.38, 5.57, 6.14, 6.83, and 7.17 provide increased torque multiplication. These are better suited to low-speed operation, steep grades, soft surfaces, frequent starts, large tires, or extremely heavy loads.

Some Dana specification material may list additional ratios for specialized configurations. Current availability must be confirmed using the exact axle model and application.

Both tandem carriers must use matching ratios. A mismatch between the forward and rear-rear axles will cause driveline windup and severe damage.

See Commercial Truck Axle Ratios Explained for additional ratio-selection guidance.

Differential and Traction Options

The D190 includes a lockable inter-axle differential inside the forward carrier. Engaging the lock helps both tandem members continue receiving torque when one axle has less traction.

Driver-controlled wheel differential locks are available on the forward and rear-rear axles. Depending on the specification, a truck may have a wheel lock on one drive axle or both.

Dana states that the wheel differential-lock feature can be retrofitted on certain D190 models during the vehicle’s service life. Compatibility must be confirmed using the complete axle model, carrier, production date, and application.

A truck equipped with locks in all three differential positions can provide substantial traction on mud, snow, gravel, construction sites, oilfield roads, and uneven surfaces.

Differential locks do not increase axle capacity. They also should not be used during tight turns on firm, dry pavement because driveline windup and tire scrub can result.

Learn more in Open vs Locking vs Limited-Slip Differentials.

Brake and Wheel-End Options

D190 axles can be equipped with heavy-duty drum brakes or commercial air-disc brakes according to OEM and application requirements.

Brake specifications vary by model and can include different drums, rotors, calipers, chambers, slack adjusters, parking-brake equipment, ABS sensors, and dust-protection systems.

Spicer LMS and LMSi hub systems are available for selected configurations. These wheel ends are intended to reduce maintenance requirements, improve reliability, and control bearing adjustment.

A carrier-integrated electromagnetic retarder may be specified. The integrated mounting arrangement provides supplemental braking while reducing the complexity of installing a separate driveline-mounted unit.

Central tire inflation systems may also be available. CTIS allows tire pressure to be adjusted for highway travel, soft ground, uneven terrain, and changing load conditions.

Wheel ends, brakes, tires, and CTIS equipment must be matched to the axle rating and intended duty cycle.

Common Applications

Heavy-haul tractors
Construction trucks
Large dump trucks
Logging trucks
Oilfield trucks
Refuse trucks
Concrete mixer trucks
Mining-support vehicles
Heavy recovery trucks
Municipal severe-service equipment
Off-highway support trucks
Low-speed vocational vehicles
Trucks operating on soft or uneven terrain
Vehicles requiring a 52,000-pound tandem
Vehicles requiring a 60,000-pound tandem
Applications requiring deep axle ratios

Truck, Suspension, and Drivetrain Compatibility

The D190 is designed for heavy-duty and severe-service trucks using a tandem-drive configuration. The complete vehicle normally uses a 6×4 drivetrain, although specialized chassis layouts may differ.

The D52-190 and D60-190 must be matched with an appropriate engine, transmission, clutch or torque converter, driveshafts, suspension, tires, wheels, brakes, and frame.

Mechanical walking-beam, rubber-block, heavy-duty air, and other vocational suspensions may be compatible when approved for the axle model and vehicle application.

Integrated welded suspension brackets can improve strength and reduce maintenance compared with some bolt-on mounting arrangements. Their dimensions must match the chosen suspension.

High-capacity engines and deep-reduction transmissions can generate extreme driveline torque. Main and inter-axle driveshafts, universal joints, yokes, gearing, and axle shafts must be rated accordingly.

Wide-track housings can improve stability but affect overall vehicle width, wheel loading, turning clearance, body clearance, and tire placement.

Advantages

Provides tandem ratings of 52,000 or 60,000 pounds
Designed for severe vocational and heavy-haul applications
Broad ratio selection supports multiple duty cycles
Deep ratios provide strong low-speed pulling capability
Extra-wide gear faces increase strength
High-capacity bearings support high torque and horsepower
Forged heat-treated differential cases improve durability
Large wheel-differential gearing supports heavy loads
Sixteen M20 ring-gear fasteners provide high clamp load
Integral pinion cage strengthens the carrier
Integrated ring-gear mounting removes a traditional bolted joint
Heavy housing construction resists deflection
On-demand lubrication pump improves component protection
Patented breather does not require conventional maintenance
Driver-controlled differential locks improve traction
Wheel differential locks can be retrofitted on certain models
Integrated retarder mounting reduces installation complexity
LMS and LMSi wheel ends can reduce maintenance
Central tire inflation improves mobility on changing surfaces
Welded suspension brackets provide strength with fewer service points

Limitations or Considerations

The D190 is heavier than lower-capacity tandem axles
Its size and capacity may be unnecessary for normal highway freight
Deep ratios produce higher engine speed during highway travel
A 52,000- or 60,000-pound rating does not automatically establish legal carrying capacity
The 225,000-pound nominal GCW depends on duty cycle and application approval
Heavy-wall housings and wide-track configurations increase axle weight
Wide-track axles may affect legal width and maneuverability
Differential locks add pneumatic, electrical, and mechanical components
Central tire inflation adds hoses, seals, valves, and controls
Electromagnetic retarders require compatible electrical and cooling systems
Not every option is available on every axle model
D52-190 and D60-190 components may differ
Ratio changes require matched gearing in both tandem carriers
Specialized service may require trained technicians and heavy repair equipment
Used assemblies can have application-specific suspension brackets that are difficult to adapt
Operating costs may be higher than those of a standard 40,000-pound tandem

Driver and Operator Experience

D190-equipped trucks are generally geared and configured for controlled movement under heavy loads rather than rapid acceleration or high cruising speeds.

Numerically high axle ratios provide strong low-speed response and make it easier to start heavy loads. The tradeoff is higher engine rpm when road speed increases.

Driver-controlled differential locks can improve mobility on job sites, logging roads, oilfield roads, snow, mud, gravel, and uneven terrain.

Drivers must understand the difference between the inter-axle lock and the wheel differential locks. Each affects a different part of the tandem.

A central tire inflation system can improve ride quality and traction by allowing the tire pressure to be adjusted for the surface. Drivers must stay within the tire, wheel, axle, and CTIS manufacturer’s approved settings.

The optional retarder provides additional braking without relying entirely on the service brakes. This can improve control and reduce brake heat on long descents.

Maintenance and Ownership Notes

The D190 should be maintained according to Dana service literature and the vehicle manufacturer’s maintenance schedule.

Correct lubricant type and fill level are essential. Heavy loads, steep grades, slow operation, and high ambient temperatures can place substantial thermal stress on axle lubricant.

The on-demand pump should be inspected and diagnosed using Dana procedures. A pump or lubricant-flow problem can damage the power divider, bearings, and gears.

Routine inspections should include the input seal, output seal, pinion seals, differential covers, wheel seals, patented breathers, housings, suspension brackets, hubs, and brakes.

Technicians should inspect the main and inter-axle driveshafts, yokes, universal joints, fasteners, and slip joints.

Differential-lock air lines, wiring, switches, actuators, and warning lights should be checked regularly.

CTIS-equipped axles require inspection of rotary seals, hoses, wheel-end connections, valves, and controls.

Integrated retarders require their own inspection and electrical service procedures.

Common Axle or Differential Problems

Input or pinion-seal leakage
Forward output-seal leakage
Differential-cover leakage
Wheel-seal leakage
Low or contaminated lubricant
On-demand lubrication-pump failure
Power-divider gear or bearing wear
Inter-axle differential damage
Gear whine during acceleration or coast
Carrier-bearing noise
Excessive ring-and-pinion backlash
Differential-case or gear damage after severe shock loading
Wheel differential-lock failure
Inter-axle lock that will not engage or disengage
Air or electrical problems affecting traction controls
Wheel-bearing overheating or looseness
Driveline vibration from worn universal joints
Loose or worn input and output yokes
Cracked or damaged suspension brackets
Axle-housing bending or cracking
CTIS air leaks
Electromagnetic-retarder electrical or mounting problems
Uneven tire wear caused by axle alignment or suspension issues

See Common Truck Axle and Differential Problems for additional diagnostic information.

Identification Information

Manufacturer: Dana Incorporated
Product Family: Spicer D190 Series
Primary Models: D52-190 and D60-190
Axle Type: Single-reduction heavy-duty tandem drive axle
Identification Sources: Forward and rear-rear axle tags, carrier tags, housing stampings, and OEM build information
Important Information to Record: Complete model numbers, serial numbers, specification numbers, ratio, carrier identification, and truck VIN

Dana nomenclature uses the letter D to identify the forward tandem axle with an inter-axle differential. The rear tandem member may use an R designation.

The numerical portion of the model identifies the general capacity and axle-head series. Suffix letters can identify differential locks, retarder preparation, wide-track equipment, and other options.

The forward and rear-rear carriers perform different functions and should not be confused when ordering parts.

If the tags are missing, use the truck VIN, OEM build sheet, housing stampings, carrier casting or assembly numbers, ring-gear markings, brake identification, hub numbers, and physical measurements.

Use How to Identify a Truck Axle or Differential before ordering parts.

Buying Considerations

Confirm whether the tandem is a D52-190 or D60-190
Record the complete forward and rear-rear axle model numbers
Verify the serial and specification numbers from both axles
Confirm the published tandem capacity
Check the approved GCW and duty cycle
Verify the ratio in both tandem carriers
Match the ratio to the engine, transmission, tires, terrain, and operating speed
Confirm driveshaft and universal-joint torque capacity
Identify all inter-axle and wheel differential locks
Determine whether the wheel locks were factory installed or retrofitted
Check for an on-demand lubrication pump
Identify the housing and track-width configuration
Verify suspension-bracket type and dimensions
Determine whether brackets are welded to the housing
Identify Spicer LMS or LMSi wheel ends
Confirm drum-brake or air-disc-brake equipment
Check for an electromagnetic retarder
Identify central tire inflation equipment
Verify hub, spindle, wheel, and tire ratings
Inspect used gears for pitting, scoring, heat damage, and abnormal wear
Inspect housings and brackets for cracks, bending, corrosion, and poor repairs
Check all seals and covers for leakage
Inspect yokes, splines, axle shafts, and driveshafts
Request maintenance, lubricant, and rebuild records
Verify replacement-part and service availability
Obtain Dana or OEM approval for the intended application
Include freight, core charges, installation, lubricant, brakes, and driveline modifications in the total cost

Variants and Configurations

D52-190 with a 52,000-pound tandem rating
D60-190 with a 60,000-pound tandem rating
Ratios from 3.42 through 7.17
Standard-track configuration
Wide-track configuration
Standard wheel differentials
Inter-axle differential lock
Forward wheel differential lock
Rear-rear wheel differential lock
Differential locks on both drive axles
Standard wheel ends
Spicer LMS wheel ends
Spicer LMSi wheel ends
Drum-brake configuration
Air-disc-brake configuration
Carrier-integrated electromagnetic retarder
Retarder-ready configuration
Central tire inflation configuration
Welded suspension-bracket configuration
Dual-tire configuration
Wide-base single-tire configuration when approved
Construction configuration
Heavy-haul configuration
Logging configuration
Oilfield configuration
Refuse configuration

Comparison to Similar Equipment

Compared with the Dana Spicer D172 Series, the D190 provides higher 52,000- and 60,000-pound tandem ratings, deeper ratio availability, larger gearing, and heavier severe-service construction.

The D172 offers 40,000-, 46,000-, and 50,000-pound models and can be a better fit when the D190’s additional capacity is unnecessary.

Compared with the Dana Spicer AdvanTEK 40 Pro Tandem Axle, the D190 focuses on heavy loads, deep gearing, traction, and severe vocational durability. The AdvanTEK 40 Pro emphasizes highway efficiency and engine downspeeding.

Compared with the Dana Spicer S190 Series, the D190 uses two connected drive axles rather than one. It provides greater combined capacity and more driven wheels but adds weight, tires, gearing, and maintenance.

The D190 occupies a specialized position for fleets that need more capability than a common highway tandem but do not require a planetary reduction axle.

Best Fit For

Extreme heavy-haul tractors
Large construction trucks
Heavy dump trucks
Logging trucks
Oilfield trucks
Refuse vehicles
Concrete mixer trucks
Mining-support vehicles
Heavy recovery trucks
Severe-service municipal equipment
Operations requiring a 52,000-pound tandem
Operations requiring a 60,000-pound tandem
Applications needing ratios as deep as 7.17
Trucks requiring wheel differential locks
Vehicles needing wide-track axle configurations
Mixed-surface operations using central tire inflation
Applications benefiting from an integrated retarder
Fleets that prioritize strength and durability over minimum weight

Related Truck Types

Related Truck Models

Related Axle and Differential Types

Related Equipment Systems

Related Guides

Regulatory and Compliance Notes

The D190’s 52,000- and 60,000-pound ratings describe axle-system capacity. They do not automatically authorize those tandem weights on public roads.

Legal weight depends on axle spacing, bridge-formula requirements, permits, route restrictions, suspension ratings, frame capacity, tire and wheel ratings, brakes, and the completed vehicle’s certification.

Heavy-haul operations may require permits, escorts, route surveys, travel-time restrictions, additional axles, and reduced operating speeds.

Wide-track configurations must comply with applicable vehicle-width regulations.

CTIS settings must remain within approved tire, wheel, axle, load, and speed limits.

Changes to the axle ratio, tires, brakes, suspension, retarder, or wheel ends can affect speedometer calibration, ABS, traction control, stability control, emissions operation, and warranty coverage.

Real World Operating Notes

The D52-190 provides a step above common 46,000- and 50,000-pound vocational tandems without the full weight of a 60,000-pound system.

The D60-190 is best reserved for applications that can make practical use of its additional capacity and heavier construction.

A deep axle ratio can make an extremely heavy truck easier to start and control at low speed, but it may make normal highway travel inefficient.

Differential locks, CTIS, and wide-track housings improve mobility and stability but do not compensate for overloading or unsuitable operating practices.

The integrated electromagnetic retarder can be especially valuable in refuse, construction, mining, and heavy-haul operations involving frequent braking or extended descents.

Used D190 tandems can be highly application-specific. Two assemblies with the same model and ratio may still differ in suspension brackets, track width, brakes, wheel ends, locks, retarder equipment, and yokes.

Frequently Asked Questions

What is the Dana Spicer D190 Series?

The D190 Series is a family of single-reduction heavy-duty tandem drive axles designed for construction, heavy haul, logging, oilfield, refuse, and severe vocational trucks.

What models are included in the D190 Series?

The primary models are the D52-190 and D60-190.

What is the D52-190 rated for?

The D52-190 has a published tandem gross axle weight rating of 52,000 pounds.

What is the D60-190 rated for?

The D60-190 has a published tandem gross axle weight rating of 60,000 pounds.

What is the maximum published nominal GCW?

Dana has published a nominal GCW of up to 225,000 pounds, although the allowed rating varies by duty cycle and requires application approval.

What ratios are available?

Dana identifies a published ratio range from 3.42:1 through 7.17:1. Exact availability depends on model and application.

Does the D190 have locking differentials?

The tandem includes an inter-axle differential lock, and driver-controlled wheel differential locks are available on both the forward and rear-rear axles.

Can a wheel differential lock be added later?

Dana states that wheel differential locks can be field-retrofitted on certain models. The exact axle must be checked before ordering a conversion.

Does the D190 use a lubrication pump?

Yes. Dana identifies an on-demand high-efficiency lubrication pump as part of the D190 design.

What is an electromagnetic retarder?

It is a supplemental braking device that uses electromagnetic resistance to slow the driveline without relying entirely on the service brakes.

Can the D190 support a central tire inflation system?

Yes, CTIS is available in selected configurations. It allows tire pressure to be adjusted for changing loads, speeds, and surfaces.

Is the D190 suitable for normal linehaul freight?

It can operate on highways, but it is generally intended for heavier and more demanding applications. A lighter axle is usually more appropriate when its capacity is not needed.

Is the D190 the same as the S190?

No. The D190 is a tandem drive-axle family. The S190 is a single-drive-axle family.

Can a D190 replace a D172?

Possibly, but it is not automatically interchangeable. The D190 is larger and heavier, and its mounts, track width, brakes, driveline, suspension, and frame requirements must be evaluated.

How can I identify the correct replacement parts?

Record the complete model and serial numbers from both tandem axles, along with the ratio, specification numbers, truck VIN, brakes, hubs, locks, and installed options.

Availability and Where to Find

The Dana Spicer D190 Series is available through participating heavy-truck manufacturers, Dana-authorized distributors, commercial truck dealers, heavy-drivetrain specialists, rebuilders, and aftermarket suppliers.

New and remanufactured carriers, gear sets, bearings, seals, differential components, axle shafts, wheel-end parts, and traction-system components may be available separately.

Used complete tandem assemblies may be available from heavy-truck recyclers and specialized equipment suppliers. Their exact capacity, ratio, housing, track width, suspension brackets, brakes, locks, retarder, CTIS equipment, and condition must be verified.

Official specifications, service manuals, application guidelines, and warranty information are available from the Dana Spicer D190 Series product page and the Dana Resource Library.

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