INSTALLATION
MANUAL
MODEL 773 SERIES
REINFORCED CRASH ARM
B&B ARMR: A Division of B&B Roadway and Security Solutions
Page 10 of 38
0773-9001 Rev D
B&B ARMR reserves the right to change any information concerning product or specification without notice or obligation.
Figure 3 - Drive Stanchion (Model 773HD Shown)
Figure 4 - Receiver Stanchion
The barrier has an exterior-mounted, dampening strike pad. When the barrier operates at
the design speed, this damper reduces any whipping action by the arm as it comes to the
full, raised position.
Both the drive and receiver stanchion are bolted to an anchor assembly cast into a
subterranean concrete pour (see
Figure 5 – Subterranean Foundations
Security
Latching
Device
Hinge Pin
Control/Drive
Enclosure
Hydraulic
Cylinder
Receiver –
Arm Strike
Pad
Pivot Bearing
(1x per side)
Tool Drop
Plate
Drive –
Arm Strike
Pad
Marshalling
Box
