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•
Although wall thickness does not have a significant effect on drive shaft length for this calcu-
lation, it does have some effect. Contact drive line supplier for additional information.
•
Extremely short drive lengths between the pump and the rear axle can also cause problems
from excessive operating angles when the suspension articulates. Use caution and conserva-
tive design values when utilizing air ride suspension and short rear drive lines.
•
For application assistance and approval, contact your drive line equipment manufacturer, or
industry respected experts such as Spicer/Dana or Meritor.
Table 4.
Shaft
RPM
2.0 (51)
2,400
47 (1,194)
2,600
45 (1,143)
2,800
44 (1,118)
3,000
42 (1,067)
3,200
41 (1,041)
3,400
39 (991)
3,600
38 (965)
3,800
37 (940)
4,000
36 (914)
NOTE: The table is based on a 0.134-in (3.4 mm) shaft wall thickness.
5.2 Power Requirements
The OEM/apparatus builder shall supply two separate sources of +12 VDC power (ignition), one
capable of 85 Amps and one capable of 300 Amps (one for SAM and one for the ESP primer sys-
tem respectively).
OTHER ELECTRICAL COMPONENTS MUST NOT BE SUPPLIED FROM THE SAM SYSTEM
SUPPLY. DO NOT CONNECT THE PRIMER AND HALE SAM TO THE SAME POWER WIRE.
When an optional SmartFOAM system is selected a third +12 VDC power source capable of
40 Amps (for a 1.7 AHP or 2.1 A foam pump), 60 Amps (for a 3.3 or 5.0 foam pump), or 80 Amps
(for a 6.5 foam system) is also required.
DO NOT CONNECT THE SAM, ESP, OR FOAM SYSTEM TO A LOAD SHEDDING CIRCUIT.
When an optional SmartCAFS system is selected a third +12 VDC power source capable of
60 Amps for a 3.3 or 5.0 foam proportioning system is also required. Do NOT connect the SAM,
ESP, or CAFS system to a load shedding circuit.
Maximum Recommended Drive Line Lengths
Shaft Diameter
2.5 (64)
3.0 (76)
53 (1,346)
58 (1,473)
51 (1,295)
55 (1,397)
49 (1,245)
53 (1,346)
47 (1,194)
52 (1,321)
46 (1,168)
50 (1,270)
44 (1,118)
48 (1,219)
43 (1,092)
47 (1,194)
42 (1,067)
46 (1,168)
41 (1,041)
45 (1,143)
3.5 (89)
4.0 (102
63 (1,600)
76 (1,702)
60 (1,524)
64 (1,626)
58 (1,473)
62 (1,575)
56 (1,422)
60 (1,524)
54 (1,372)
58 (1,473)
53 (1,346)
56 (1,422)
51 (1,295)
55 (1,397)
50 (1,270)
53 (1,346)
48 (1,219)
52 (1,321)
4.5 (114)
71 (1,803)
68 (1,727)
65 (1,651)
63 (1,600)
61 (1,549)
59 (1,499)
58 (1,473)
56 (1,422)
55 (1,397)
45
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