ProGear Hendrickson HN FR Series Service Manual page 4

17730-285
Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • parts@eprogear.com
Subsequently, the HN FR Series suspension reduces scheduled maintenance, which helps lower
operating costs.
VariRate Spring System — Delivers a combination of superior stability, articulation and
■ ®
ride. System can be tailored to meet the specific needs of unique vehicle applications
Rubber bolster springs — Diagonally-mounted rubber bolster springs deliver a smooth
■
ride and outstanding articulation. Wide spring centers enhance stability and eliminate the
need for the cross tube.
Auxiliary springs — Engage to provide added stability for more demanding applications.
■
■ Equalizing beam — Formed and robotically-welded equalizing beam eliminates center
bushings and lubrication requirements — significantly reducing scheduled maintenance;
provides a narrow profile for weight savings; distributes load equally between both axles for
improved traction; and establishes a solid axle connection for improved handling.
■ Bar pin beam end connection — Rugged axle connection extends bushing life and allows
easy axle alignment and serviceability.
■ Saddle / frame brackets — Weight-saving, high-strength design increases carrying capac-
ity and durability.
Rebound Control Strap — Protects bolster springs from severe rebound tension
■
■ Torque Rods — Enhance handling during braking and cornering. Transverse rods ensure
axle position and lateral stability. Longitudinal rods engineered to optimize resistance to
axle wind-up.
HN ® FR SPECIFICATIONS
HN 422FR
Installed Weight 1 888 lbs.
Suspension Rating 42,000 lbs.
2
GVW Approval 73,000 lbs.
3
Diagonal Articulation
4
Ride Heights
Axle Spacing 52", 54"
5
1. Installed weight includes complete suspension at 9.5" ride height and 54" axle spacing.
2. Capacity ratings approved for fire and rescue applications only.
3. Contact Hendrickson for applications that may exceed GVW approval ratings.
4. Suspension articulation may exceed vehicle's capability and may be limited by vehicle manufacturer; vehicle
manufacturer installed axle stops may restrict suspension's articulation.
5. Additional beam lengths available, contact Hendrickson Application Engineering.
HN 482FR
911 lbs.
48,000 lbs.
80,000 lbs.
17"
9.5", 10.5", 11.5", 13.25", 15.5"
54"
3
HN ® FR Series
HN 542FR HN 582FR
991 lbs. 1,011 lbs.
54,000 lbs. 58,000 lbs.
80,000 lbs. 90,000 lbs.
54", 60" 54", 60"
Product Description