How to recognize a CAT 320B excavator, used excavators, used construction machinery

Caterpillar 320B Hydraulic Excavator

The Caterpillar 320B hydraulic excavator was introduced in 1996 in Japan. Production began in Belgium, France, and China in 1997, and Brazil in 1998.

The 320B has two different engine configurations: a Cat 3116 or 3066. Both are turbocharged, diesel engines producing 128 flywheel horsepower (FWHP). It comes standard with a high level of operator comfort and increased stick and bucket force.

The 320B was manufactured in Japan, with a 1CS, 3MR, 4FS, 4MR, 4NR, 5BR, 5CS, 6CR, 6LS, 9JS, or 9KR prefix; in Belgium, with a 1XS, 2AS, 3YZ, 5MS, or 7JR prefix; in France, with a 9WS prefix; in China, with a 8ES or 9CS prefix; and in Brazil, with a 4XW or 5GW prefix.

The 1XS, 2AS, 7JR, 4XW, 5GW, 8ES, 9CS, 9WS, 3MR, 4MR, 5BR, and 6CR units come standard with a Rexroth pump, power and work mode selector including a new user mode, an integrated seat and console, air conditioner, modified controllability, and modified serviceability from the ground. The 3MR and 4MR units have a SP10K pump instead of the Rexroth model.

The 5MS, 1CS, 4FS, 4NR, 5CS, 6LS, and 9JS units come standard with a variable flow hydraulic system with a power and work mode selector, pilot activated control, horsepower summation control, large lifting capacity, large cross-section design for the boom and stick, in-line mounted pumps, a modified X-shaped carbody, and increased pressure in the travel circuit.

The 2AS, 7JR, 4MR, 5CS, and 6CR units have a long undercarriage.
The 5MS unit has a short undercarriage.
The 1CS, 6LS, and 9JS units have a heavy-duty frame.
The Chinese and Brazilian units all have a wide cab.


Production of 2AS ended in 1998.
In 1998 Caterpillar added stick regeneration and a higher capacity air conditioner to two Japanese units, beginning with 5BR01639 and 6CR02902.
Production of 1CS, 4FS, and 4MR ended in 1999; 3MR, 4NR, 5BR, 6CR, 6LS, and 9JS ended in 2000; 1XS, 4XW, 9CS, 9WS, and 9KR ended in 2001; 5MS ended in 2002; 7JR ended in 2003; 8ES ended in 2005.
Based on data from the sales database of Ritchie Bros. Auctioneers, it is estimated that more than 25,500 Caterpillar 320B hydraulic excavators have been produced.

Now we have one CAT 320BL which is USA made, and serial no is start with 1AS, and with cat 3116 engine, running well, good condition, any interest, welcome to contact us freely
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