Manitowoc National Crane 500E2 Service Manual

9-8 Published 08/16/19 Control # 112-05
CRANE INSTALLATION 500E2 SERVICE MANUAL
TRUCK FRAME STRENGTH
In order for a truck frame to be suitable for accepting a Series
500E2 Service Manual size crane, the truck frame must have
a requirement for rigidity so as not to allow excessive boom
movement due to truck frame deflection, and it must be
strong enough to resist the loading induced by the crane so
as not to permanently bend or deform. Section Modulus
(S.M.) is a measurement of the area of the truck frame and
determines the rigidity of the frame. Resistance to bending
moment (RBM) is a measurement of strength and is
determined by multiplying the section modulus of each frame
rail by the yield strength of the rail material.
For a standard, behind-the-cab mount, 180° stability, the
Series 500E2 Service Manual crane requires a minimum of
1,749,000 in-lb (1197,610 N-m) RBM and 15.9 in
3
(261 cm
3
)
S.M. under the crane frame between the front and rear
springs with 1,430,000 in-lb (161,590 N-m) RBM and 13 in
3
(213 cm3) S.M. through suspension to rear stabilizers on
each truck frame rail. For 360° stability, the truck frame must
have a 15.9 in
3
(261 cm
3
) section modulus [1,749,000 in-lb
(197,610 N-m) RBM] minimum at the crane frame between
the front and rear springs with 1,430,000 in-lb (161,590 N-m)
RBM and 13 in.
3
(213 cm
3
) S.M. through suspension to rear
stabilizers on each truck frame rail. Listed below is a table
showing the commonly used truck frame and reinforcing
materials and the section modulus required for each material
to ensure adequate strength and rigidity. In all cases, the
minimum requirements for section modulus and RBM must
be met.
Engine CCW
PTO CCW
Engine CCW
PTO CW
REQUIRED FRAME STRENGTH
Truck Frame or
Reinforcing
Material
Minimum
Section Modulus
Under Crane
Minimum Section
Modulus
Through Rear
Suspension
RBM Under
Crane
Rmb Through
Suspension
360° Stability
110,000 PSI
(758 MPa)
15.9 in
3
(261 cm
3
) 13.3 in
3
(218 cm
3
)
1,749,000 in-lb
(197,637 Nm)
1463,000 in-lb
(161,570 Nm)
50,000 PSI
(345 MPa)
33.0 in
3
(541 cm
3
) 18.0 in
3
(295 cm
3
)
1,650,000 in-lb
(186,425 Nm)
850,000 in-lb
(96,050 N-rn)
180° Stability
110,000 PSI
(758 MPa)
15.9 in
3
(261 cm
3
) 13.3 in
3
(218cm
3
)
1,749,000 in-lb
(197,637 Nm)
1,463,000 in-lb
(161,570 Nm)
50,000 PSI
(345 MPa)
33.0 in
3
(541 cm
3
) 18.0 in
3
(295 cm
3
)
1,650,000 in-lb
(186,425 Nm)
850,000 in-lb
(96,050 N-m)

Manitowoc National Crane 500E2 Specifications

General

Brand	Manitowoc
Model	National Crane 500E2
Category	Construction Equipment
Language	English