409-10204
Rev G
10
of 23
3.3.
Considerations Affecting Placement of Bench Machines
(Figure 8)
The location of the machine in relation to the operator's position is extremely important in terms of both safety
and maximum efficiency. Studies have repeatedly shown that operator fatigue will be reduced, and greater
efficiency achieved, if:
the bench is of appropriate height, preferably with sound-deadening rubber mounts;
the machine is properly located on the bench with ample work areas on both sides to facilitate work flow;
the operator uses a swivel chair with padded seat and back rest which are independently adjustable; and
the foot switch, on machines so equipped, is placed on a rubber mat to maintain its movability, while
preventing it from sliding unintentionally.
Figure 8 illustrates proper machine location, operator position, and recommended foot switch position.
Figure 8
Bench
The bench to be used should be of sturdy construction, preferably with rubber mounts to minimize noise.
A height of 762 to 812.8 mm [30 to 32 in.] is the most suitable for operator comfort and convenience. This
height allows the operator to rest both feet on the floor, thereby providing for the shifting of weight and leg
position.
Machine Mounting and Location on Bench
The machine should be located near the front of the bench with the “target area" (tooling area where the
product is applied) not more than 152.4 to 203.2 mm [6 to 8 in.] -- minimum 50.8 mm [2 in.] from the front
edge. This location will eliminate unnecessary operator motion and help to avoid back strain and fatigue.
Orientation of the machine should be such tha
t the “target area" is facing the front of the bench and is
parallel to the front edge (access to the back of the machine MUST also be provided).
DANGER
Machines should be securely bolted to the bench using the machine mounting holes shown in Figure 5. Hardware is customer
supplied. Machines should not extend beyond the front of the bench.
Operator's Chair
The operator's chair should swivel, and should have independent seat height and back rest adjustments.
The seat and back rest should be padded, and the back rest should be large enough to provide support
both above and below the waist line.
In use, the chair should be far enough under the bench so that the operator's back is straight and is
supported by the back rest.
