Vestil LM-Boom - Manual (Page 18)

LM-series fork-mountable booms 01/11 rev. 11/14/2013
Page 18 of 28
Copyright 2013 Vestil Manufacturing Corp.
FIG. 4B: LM-EBT – 4k, 6k & 8k Centers of Gravity and Maximum Load Ratings
for Varying Load Attachment Point and Boom Extension Combinations
The center of gravity of the boom ranges between a minimum of 34.5 inches and a maximum of 54.5
inches from the outer edges of the fork pockets. As shown in the diagram above, the horizontal center of
gravity may be located at any point from RHCG to EHCG:
 RHCG [stands for “Retracted horizontal center of gravity”]: boom fully retracted, and load attached
at position A, the center of gravity is located 34.5 inches (~88cm) from the outer edges of the fork
pockets;
 Extended horizontal center of gravity (EHCG): fully extended with a load attached at position J, the
center of gravity is located 54.5 inches (~138cm) from the outer edges of the fork pockets.
 All other combinations of boom extension and load position produce a horizontal center of gravity
located somewhere between RHCG and EHCG.
Model EHCG RHCG VCG
LM-EBT-4k 56 1 /
2
in. (~143 ½ cm) 36 in. (~91 ½ cm) 4 7 /
16
in. (~11 cm)
LM-EBT-6k 56 1 /
2
in. (~143 ½ cm) 36 in. (~91 ½ cm) 4 7 /
16
in. (~11 cm)
LM-EBT-8k 57 1 /
8
in. (~145 cm) 38 in. (~96 ½ cm) 4 13 /
16
in. (~12cm)
= Center of gravity
Origin
point for
centers
of
gravity