Hendrickson Trailer Parts Catalog

ZMD ® Zero Maintenance Damping ® Technology

GENUINE PARTS

ZMD ® Features and Benefits

Robust Down Stop • Reduced labor and costs • Less maintenance • Reduced risk of roadside inspections and CSA violations 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.

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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ZMD Technology

Ride Comfort Improvement

Cargo Protection Improvement

Industry-Leading Air Suspension

ZMD Technology

Industry-Leading Air Suspension

Vehicle Speed at Road Input

Ride Quality

Cargo Protection

Specifications

SYSTEM CAPACITY (pounds)

RIDE HEIGHTS (inches)

MODEL

AXLE DIAMETER

NOTES

ULTRAA-K ®

UTKNT 40K

40,000

LDA ™ Large-Diameter Axle

16

Standard

VANTRAAX ®

HKANT 40K

40,000

LDA

16

Optional; Requires QUIK-DRAW ®

INTRAAX ®

AANT 23K AAT 23K* AAT 25K*

23,000 23,000 25,000

LDA LDA LDA

14, 15, 16, 17 14, 15, 16, 17

Optional; Standard travel only

Optional; Standard travel and limited rebound*

14, 15, 16, 17, 18, 19 Optional; Standard travel and limited rebound*

*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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