RZ-166™/RZ-188™ Tridem Rear Drive Axle

Product Availability

Asia Pacific, Europe, North America, Latin America

Applications

Construction and Utility
Truck
Defense
 RZ-166 RZ-188 tridem rear drive axles

The RZ-166/RZ-188 tridem rear drive axles are ideal for construction, utility and other severe service applications where more tractive effort is required over conventional tridem axles. Engineered to deliver performance and durability, these axles are stronger and offer longer life under challenging operating conditions offering gross axle weight ratings (GAWR) up to 77,000 lbs.

Features & Benefits

  • Three driving axles for even distribution of the available tractive effort to the ground; all three axles are assumed equally loaded at all times
  • Utilizes production tridem axles for parts commonality
  • Hypoid-Generoid gearing (18 inches or 19.6 inches) provides long life, exceptional strength and quiet operation
  • Precision-forged differential gears for more durability and strength
  • Optional driver-controlled differential lock (DCDL) for enhanced traction and spinout protection in slippery conditions
  • Optional pressurized, filtered tube system virtually eliminates the potential for spinout damage

Videos:

Model Ratings Pounds (kg) GCW Highway Pounds (kg) Ring Gear Size (Pitch Diameter) Inches (mm) Standard Ratios Axle Shaft Spline Size Inches (mm) Body Diameter Inches (mm) Housing Box Size Inches (mm) Wall Thickness At Spring Seat Inches (mm) Wheel-End Series
Max. 3% Grade (Turnpike) Max. 8% Grade (Paved)
RZ-166 69,000 (31,326) Consult Cummins-Meritor Axle Representatives Axle 1, 2 & 3: 18.0 (457.2) 3.42, 3.58, 3.73, 3.91, 4.10, 4.30, 4.56, 4.89, 5.38, 5.63, 6.14, 6.43, 6.83, 7.17 2.35 (59.7) 46 Teeth 2.25 (57.2) Axle 1, 2 & 3: 5.25 x 4.62 (134 x 117) Axle 1, 2 & 3: 0.62 (16.0) R
RZ-188 77,000 (34,958) Axle 1, 2 & 3: 19.6 (498.3) 3.73, 3.91, 4.10, 4.30, 4.56, 4.89, 5.38, 6.14, 6.83, 7.17 Axle 1, 2 & 3: 5.50 x 5.50 (140 x 140) Axle 1, 2 & 3: .56 (14.3)


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