Compressor Description
12
These differences combine to make five basic
types.
•
The small shaft compressor with a C3
crankshaft drive end bearing. This type
includes the X418, X426, and X430.
•
The small shaft compressor with a C5
crankshaft drive end bearing. This type
includes the X418C5, X426C5, and X430C5.
NOTE: Some small shaft compressors with a
C5 crankshaft drive end bearing used in
truck units also have an internal oil filter.
•
The large shaft compressor with a C3
crankshaft drive end bearing. This type
includes the X426LS, and X430LS.
•
The large shaft compressor with a C5
crankshaft drive end bearing. This type
includes the X426LSC5, and X430LSC5.
•
The large shaft compressor with a C5
crankshaft drive end bearing, a pressurized
seal cavity, and an internal oil filter. This type
also includes the X426P, and X430P.
The following table shows the four cylinder
compressor models according to the shaft size and
the crankshaft drive end bearing used.
The compressor model is marked on the four
cylinder compressor body as shown below in
Figure 1.
Compressor Model by Shaft Size
and Bearing Type
C3 Bearing
C5 Bearing
Small Shaft
X418
X426
X430
X418C5
X426C5
X430C5
Large Shaft
X426LS
X430LS
X426LSC5
X430LSC5
Large Shaft with
Pressurized Seal
Cavity
X426P
X430P
1.
Compressor Model Marked Here
Figure 1: Typical Compressor Model Location
1
