Home › Mini excavators › Caterpillar
Caterpillar 304
Configuration: Minimum configuration: canopy, rubber tracks, standard stick (1395 mm), straight blade, 75 kg operator, full fuel, no bucket, no counterweight; Tier 4 Final/Stage V. Current successor to the 304 CR / 304E2 CR.
23 sourced values · Sources: Cat 304 (07A) Mini Hydraulic Excavator specalog AEHQ8377-04 (09-2025), North America/Europe and other listed regions, U.S. EPA Tier 4 Final/EU Stage V. Retrieved 2026-10-25
Dimension diagram
| A | Overall length | 4,950 mm |
| B | Overall height | 2,540 mm |
| C | Track length on ground | Not published |
| D | Ground clearance | 305 mm |
| E | Overall width | 1,700 mm |
| F | Track gauge / tread | Not published |
| G | Shoe / track width | 350 mm |
Weights
| Spec | Value | Source |
|---|---|---|
| Operating weight | 3,925 kg | Published: 3,925 kg Cat 304 (07A) Mini Hydraulic Excavator specalog AEHQ8377-04 (09-2025), North America/Europe and other listed regions, U.S. EPA Tier 4 Final/EU Stage V. Retrieved 2026-10-25Minimum operating weight with canopy (8,655 lb). Maximum with canopy 4375 kg; cab 4025–4475 kg. |
Dimensions
Undercarriage / tires
| Spec | Value | Source |
|---|---|---|
| Undercarriage type | Rubber track | Published: Rubber track Cat 304 (07A) Mini Hydraulic Excavator specalog AEHQ8377-04 (09-2025), North America/Europe and other listed regions, U.S. EPA Tier 4 Final/EU Stage V. Retrieved 2026-10-25Steel tracks optional (+195 kg). |
| Track rollers / shoes per side | Not published | Cat 304 (07A) Mini Hydraulic Excavator specalog AEHQ8377-04 (09-2025), North America/Europe and other listed regions, U.S. EPA Tier 4 Final/EU Stage V. Retrieved 2026-10-25 Not published in this document. |
Ground pressure
| Spec | Value | Source |
|---|---|---|
| Ground pressure | 28.7 kPa | Published: 28.7 kPa Cat 304 (07A) Mini Hydraulic Excavator specalog AEHQ8377-04 (09-2025), North America/Europe and other listed regions, U.S. EPA Tier 4 Final/EU Stage V. Retrieved 2026-10-25At minimum weight (4.2 psi). At maximum weight 33.8 kPa. |
Engine
Hydraulics
| Spec | Value | Source |
|---|---|---|
| Pump / aux flow | 96 L/min | Published: 96 L/min Cat 304 (07A) Mini Hydraulic Excavator specalog AEHQ8377-04 (09-2025), North America/Europe and other listed regions, U.S. EPA Tier 4 Final/EU Stage V. Retrieved 2026-10-25Load-sensing variable-displacement piston pump at 2,400 rpm (25 gal/min). |
| System / relief pressure | ≈ 24.5 MPa | Published: 245 bar Cat 304 (07A) Mini Hydraulic Excavator specalog AEHQ8377-04 (09-2025), North America/Europe and other listed regions, U.S. EPA Tier 4 Final/EU Stage V. Retrieved 2026-10-25Operating pressure – equipment (3,553 psi). Travel 245 bar; swing 180 bar. |
Performance
Similar models
| Brand | Model | Operating weight |
|---|---|---|
| Case | CX38D | ≈ 3,910 kg |
| New Holland | E38D | ≈ 3,910 kg |
| Takeuchi | TB240 | ≈ 3,890 kg |
| Komatsu | PC35MR-5 E1 | 3,870 kg |
| Volvo | ECR40 | 3,985 kg |
| John Deere | 40 P-Tier | 3,865 kg |
Compare side by side with Case CX38D and New Holland E38D