3-ton Mini Digger
✅Powerhouse: Equipped with the YANMAR 3TNV88 engine (20.2 kW @ 2200 rpm) and 82.6 N·m max torque for heavy-duty digging and lifting efficiency.
✅High-Performance Hydraulics: Advanced system with 88 L/min max flow and 24.5 MPa working pressure ensures rapid, precise operation.
✅Extended Reach & Depth: Achieve a 4.86 m max digging height, 3.11 m digging depth, and 5.47 m max reach for versatile applications.
✅Exceptional Digging Force: 30.4 kN bucket force and 18.2 kN arm force tackle tough materials with ease.
✅Compact Agility: A 860 mm tail swing radius, 1.72 m width, and 4.92 m length enable effortless navigation in tight spaces.
✅Low Ground Impact: 32.0 kPa grounding pressure minimizes surface damage on sensitive terrain.
CT37B4 Mini Excavator Introduction:
Weighing 3.75 tons and equipped with a 0.12 m³ bucket, the CT37B4 Mini Excavator delivers heavy-duty performance tailored for compact worksites. Its upgraded YANMAR 3TNV88 engine provides 20.2 kW of power and 82.6 N·m of torque—offering a 10% increase in output for quicker digging and lifting. Combined with a high-efficiency hydraulic system (flow: 88 L/min; pressure: 24.5 MPa), operation remains smooth and responsive.
The machine achieves a digging depth of 3.11 m, a maximum reach height of 4.86 m, and an extended outreach of 5.47 m to support diverse tasks. With an ultra-narrow 860 mm tail swing and an overall width of 1.72 m, it maneuvers easily through confined urban areas. A low ground pressure of 32.0 kPa helps protect finished surfaces, while features such as dual-speed travel (2.2/4.2 km/h), a robust undercarriage enabling 58% gradeability, and an integrated 300 mm dozer blade further enhance versatility.
Ideal for construction, utility, and landscaping projects, the CT37B4 brings together power, precision, and space-efficient design in one reliable package.
CT37B4 Mini Excavator Specifications:
| Model | CT37BH | Model | CT37BH |
| Operating weight | 3.75 | G-Tail swing radius (mm) | 860.0 |
| Bucket capacity | 0.12 | H-Track ground length(mm) | 1710 |
| Engine model | YANMAR 3TNV88F | J-Track length (mm) | 2160.0 |
| Rated power (kw/r/min) | 18.2/2200 | K-Track gauge (mm) | 1420 |
| Maximum torque （N*m） | 82.6/1320 | L-Track width (mm) | 1710.0 |
| Engine displacement（L） | 1.642 | M-Track shoe width (mm) | 300 |
| Max.flow (L/min) | 88 | N-Turntable width (mm) | 1550.0 |
| Working pressure (Mpa) | 24.5 | O-Max. digging height (mm) | 4855 |
| Fuel tank capacity (L) | 50 | P-Max. dumping height (mm) | 3460.0 |
| Hydraulic oil tank capacity (L) | 40 | Q-Max. digging depth (mm) | 3105 |
| Travel speed (km/h) | 2.2/4.2 | R-Max. vertical wall digging depth (mm) | 2700.0 |
| Swing speed (r/min) | 9.5 | T-Max. digging reach (mm) | 5465 |
| Max. climbing degree (%) | 58 | U-Max. digging reach at ground level (mm) | 5350.0 |
| Arm digging force | 18.2 | V-Min. swing radius (mm) | 2475 |
| Bucket digging force (KN) | 30.4 | X-Distance between center of rotation and tail length (mm) | 860.0 |
| Average grounding pressure (Kpa) | 32.0 | Z-Height of counterweight (mm) | / |
| A-Overall length (mm) | 4920.0 | A1-Ground length (in transportion)(mm) | 4920 |
| B-Overall width (mm) | 1720 | Arm length (mm) | 1400/1650 |
| C-Overall height (to top of boom)(mm) | 1800.0 | Boom length (mm) | 2540 |
| D-Overall height (to top of cab)(mm) | 2550/2520 | Deflection angle left°/right° | 63/57 |
| E-Counterweight ground clearance(mm) | 580.0 | Maximum dozing height/depth (mm) | 375/370 |
| F-Min. ground clearance (mm) | 295 | Dozer size width/height（mm） | 300/1720 |
Mini Excavator Package&shipment:
Mini excavators can be delivered quickly and securely across the globe thanks to our expert loading and logistics team, with available transport options like standard containers, bulk freight, and rail lines.
Why Choose Us:
Beyond offering premium-quality, high-performance products at competitive prices, Carter, as a manufacturer, guarantees timely delivery and around-the-clock after-sales support.
Company Profile:
As a key member of Huasheng Zhongtian Machinery Group (established in 2004), Shandong Carter Heavy Industry uses the technical inheritance from 1951 to lead the development of China's excavator industry.
