Maximum safe operating speed – Spicer Driveline Installation Service Manual User Manual
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Installation Techniques
Maximum Operating
Speed
Maximum Safe Operating Speed
To prevent premature wear, auxiliary driveshaft breakage, and possible injury to people or equipment, be aware of the critical
speed of these types of driveshafts. Critical speed, explained earlier in this guide, is different for these solid shaft and small tube
driveshafts.
Refer to the chart above for maximum safe operating speed information on these types of shafts.
If the chart indicates that the critical speed may be a problem, use multiple shafts. Be sure to use support bearings where neces-
sary and set up the true universal joint operating angles as indicated earlier in this guide.
As with all driveshafts, auxiliary driveshafts should be:
•
Carefully installed to minimize vibrations caused by incorrect universal joint operating angles
•
Capable of absorbing shock loads
•
Capable of changing length as needed
•
Guarded so as to prevent inadvertent entanglement
MAXIMUM OPERATING SPEED* BY TUBE SIZE, SOLID SHAFT SIZE, AND LENGTH
*(For speeds over 6000 RPM, contact Spicer Universal Joint Division Engineering)
TUBING
MAXIMUM INSTALLED LENGTH (IN INCHES) FOR GIVEN RPM
Diameter
Centerline to Centerline of Joints for a Two Joint Assembly
&
or
Wall Thickness
Centerline of Joint to Centerline of Center Bearing for a Joint and Shaft
W - Welded
RPM - Revolutions Per Minute
S - Seamless
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
1.750" x .065" W
82"
67"
58"
52"
-
-
-
-
-
-
-
1.250" x .095" S
64"
52"
45"
40"
37"
34"
32"
-
-
-
-
2.500" x .083" W
87"
70"
62"
55"
50"
45"
43"
41"
39"
37"
35"
3.000" x .083" W
-
-
85"
76"
70"
64"
60"
57"
54"
51"
49"
SOLID SHAFT DIAMETER
.750"
42"
35"
30"
27"
25"
-
-
-
-
-
-
.812"
44"
36"
31"
28"
26"
-
-
-
-
-
-
.875"
46"
37"
32"
29"
27"
-
-
-
-
-
-
1.000"
49"
40"
35"
31"
28"
-
-
-
-
-
-
1.250"
55"
45"
39"
35"
32"
-
-
-
-
-
-