ZMD ® Zero Maintenance Damping ® Technology
GENUINE PARTS
ZMD ® Features and Benefits Patented Air Spring • Superior ride quality and driver comfort • Reduced overall suspension maintenance • Uniform damping levels over the life of the air spring • Enhanced cargo protection • Increased trailer component life
WARRANTY TERMS
ITEM
PARTS
LABOR
ZMD ® “Shockless” Ride Technology
ZMD Air Springs ZMD Down Stops
3 years
3 years
Traditional Air Springs & Shock Absorbers Air Springs 2 years 1 year Shock Absorbers 2 years 2 years *See L583 Comprehensive Warranty Statement or contact Hendrickson for complete warranty terms, conditions and limitations.
Robust Down Stop • Reduced labor and costs • Less maintenance • Reduced risk of roadside inspections and CSA violations
Tested and proven ride technology from Hendrickson Hendrickson’s state of the art research and development, testing and real-world driving evaluations have shown that ZMD technology provides superior suspension damping, which offers enhanced ride quality, driver comfort and cargo protection.
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Ride Comfort Improvement
Cargo Protection Improvement
Industry-Leading Air Suspension
ZMD Technology
Industry-Leading Air Suspension
Ride Quality
Cargo Protection
Specifications
MODEL SYSTEM CAPACITY AXLE DIAMETER
RIDE HEIGHTS
NOTES
ULTRAA-K ® UTKNT 40K VANTRAAX ® HKANT 40K INTRAAX ® AANT 23K AAT 23K*
40,000 lbs.
LDA ™ Large-Diameter Axle
16"
Standard
40,000 lbs.
LDA
16"
Optional; Requires QUIK-DRAW ®
23,000 lbs. 23,000 lbs. 25,000 lbs. 23,000 lbs. 46,000 lbs. 69,000 lbs.
LDA LDA LDA LDA LDA LDA
14", 15", 16", 17" 14", 15", 16", 17"
Optional; Standard travel only
Optional; Standard travel and limited rebound*
AAT 25K*
14", 15", 16", 17", 18", 19" Optional; Standard travel and limited rebound*
INTRAAX ® SP AAZNT 23K AAZNT 46K
13.5", 14", 15", 16", 17" 13.5", 14", 15", 16", 17" 13.5", 14", 15", 16", 17"
Optional Optional
AAZNT 69K23 Optional *RCA Raised-Center Axle is available on AAT 23K / 25K models equipped with ZMD for both standard and limited rebound travel. Only 14” or 16” ride heights are available with limited rebound travel when spec’ing RCA.
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Refer to Hendrickson Literature No. L1209 - ZMD ® Zero Maintenance Damping ® Technology
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