DODGE
FEATURES/BENEFITS
PAGE B3-2
SELECTION
PAGE B3-5
SELECTION/DIMENSIONS
PAGE B3-8
ACCESSORIES
PAGE B3-41
B3-3
EASY SELECTION
轴承参考
Guide
ULTRA KLEEN
E-Z KLEEN
极端责任
Setscrew Ball Bearing
GRIP TIGHT
D-LOK Ball Bearing
DODGE Extreme Duty mounted ball bearings are primarily
designed for radial loading. However, they have the
capacity to carry thrust loads and combined radial/
thrust loads. The maximum recommended load which
can be applied is limited by various components in the
system, such as bearing, housing, shaft attachments,
speed and life requirements as listed in this catalog and
the instruction manual that accompanies each bearing.
DODGE Extreme Duty ball bearings have been applied
successfully when these limits have been exceeded
under controlled operating conditions. Contact DODGE
超出这些应用程序的工程
recommendations.
Select a bearing from the Selection Table that has a
radial load rating at the operating speed equal to or
greater than the calculated Equivalent Radial Load for a
所需的l
10
life.
This simple method is all that is required
for the majority of general applications and provides for
occasional average shock loads.
L
10
Hours Life-
the life which may be expected for at
least 90% of a given group of bearings operating under
identical conditions.
Heavy Service-
For heavy shock loads, frequent shock
loads or severe vibrations, add up to 50% (according
to severity of conditions) to the Equivalent Radial
Load to obtain a Modified Equivalent Radial Load.
Consult Application Engineering for additional selection
assistance.
A maximum thrust load value of C/10 is recommended
as a guide for general applications and will give adequate
L
10
life. If the thrust load exceeds this limit, it is advisable
to use auxiliary thrust carrying devices, such as a shaft
shoulder, snap ring, or a thrust collar. Where substantial
radial load pulls the housing away from the mounting
base, both the hold-down bolts and housing must be of
adequate strength. Auxiliary load carrying devices, such
as shear bars, are advisable for side or end-loading of
pillow blocks and radial loads for flange units.
选择极端的责任固定螺丝钉滚珠轴承
To determine the L
10
hours life for loads and RPMs not
listed use the following equation:
L
10
=
x
(
)
(
)
C
16,667
P
n
3
Where:
L
10
= Life, hours
C = Dynamic Capacity, lbs. or N
P = Equivalent Radial Load, lbs. or N
n = Revolutions per minute
When the load on a ball bearing is solely a radial load
with no thrust (axial) load, the Equivalent Radial Load (P)
is equal to the actual radial load. However, when a thrust
(axial) load is applied, the radial and thrust loads applied
must be converted into an Equivalent Radial Load. Use
X (radial factor) and Y (thrust factor) from Table 1 to
将实际的施加推力和径向载荷转换为
Equivalent Radial Load which has the same effect on the
life of a bearing as a radial load of this magnitude.
P = XF
R
+YF
A
Where:
P = Equivalent Radial Load, lbs.
F
R
= Radial load, lbs.
F
A
=推力负载，磅。
e = Thrust load to radial load factor (Table 1)
X = Radial load factor (Table 1)
y =推力因子（表1）
C
0
= Basic static capacity (Selection Table)
To find X and Y, first calculate F
A
/C
0
to determine e.
Calculate F
A
/F
R
and compare to e to determine the X and
Y factors to use from Table 1.
Shaft Tolerances
Normal Shaft Size
Commercial Shaft Tolerance
Recommended Shaft Tolerances
(Inches)
固定螺丝球轴承（英寸）
Up to 1-1/2”
+0.000 -0.002
+0.0000 -0.0005
Over 1-1/2” to 2-1/2”
+0.000 -0.003
+0.0000 -0.0010
Over 2-1/2” to 4”
+0.000 -0.004
+0.0000 -0.0010
NOTE:
Bearing analysis program “BEST” is available on www.ptwizard.com