Excavators CAT 309 CR
Excavators CAT 309 CR
The Cat® 309 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of application...
  • Description
  • Technical Parameters

1.A sealed and pressurized cab is equipped with an improved air conditioning system, adjustable wrist rests and a suspension seat to help keep you working comfortably all day long.

2.Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information.

3.Your safety is our top priority. The Cat Mini Excavator is designed to help keep you safe on the job. A back-up camera, courtesy work lights and a fluorescent retractable seat belt are just a few of the safety features we’ve built into the machine.

Technical Parameters

Net Power

70.3 HP

Engine Model

Cat C3.3B


203 in³


3.7 in

Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269

71.5 HP

Gross Power - ISO 14396

74.3 HP

Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269

70.3 HP


4.7 in


Operating Weight

20731 lb

Maximum Operating Weight with Cab**

21091 lb

Note (1)

*Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.

Note (2)

**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.

Minimum Operating Weight with Cab*

19735 lb

Dig Depth

181 in

O/A Shipping Length

268 in

Maximum Dump Clearance

202 in

Boom In Reach

127 in

Vertical Wall

132 in

Maximum Blade Depth

26 in

O/A Undercarriage Length

126 in

O/A Track Width

97 in

Transport Height

99 in

Stick Length

93 in

Maximum Blade Height

14 in

Maximum Dig Height

279 in

Tail Swing with Counterweight

65 in

Maximum Reach

301 in

Cab Height

100 in

Ground Clearance

13.5 in

Swing Bearing - Height

31 in

Track Belt/Shoe Width

18 in

Boom Swing - Left

24 in

Boom Swing - Right

37 in

Tail Swing without Counterweight

57 in

Maximum Reach - Ground Level

293 in