Kubota U-17-3α Mini Excavator: In-depth Analysis
As urban construction environments become increasingly complex, selecting a mini excavator that combines efficient operation with adaptability to confined spaces presents a significant challenge. The Kubota U-17-3α mini excavator, a key model in Kubota's mini excavator series, offers an ideal solution with its exceptional performance, compact design, and advanced technology. This article provides an in-depth analysis of the U-17-3α's technical specifications, performance advantages, and application scenarios.
The Kubota U-17-3α is a rear small-radius mini excavator specifically designed for operation in narrow urban spaces. It delivers comprehensive improvements in operational efficiency, maneuverability, safety, and environmental performance. The model features Kubota's exclusive boom cylinder protection design and surpasses industry standards in numerous details. Compliant with Japan's Ministry of Land, Infrastructure, Transport and Tourism's third-stage emission regulations, the U-17-3α offers exceptional performance and reliability for diverse construction scenarios.
| Specification | Value | Unit |
|---|---|---|
| Operating Weight (Standard Configuration) | 1620 | kg |
| Overall Length | 3545 | mm |
| Overall Width | 990-1240 | mm |
| Overall Height | 2250 | mm |
| Bucket Width/Capacity | 450/0.041 | mm/m³ |
| Maximum Digging Depth | 2310 | mm |
| Engine Model | D902-E3-BH-1 | - |
| Engine Displacement/Power/Output | 898/16/11.8 | CC/PS/kw |
| Fuel Tank Capacity | 19 | L |
| Hydraulic Oil/Type | 13/#46(32) | L |
| Engine Oil/Type | 3.5/DH1(CF4) | L |
| Coolant | 2.6 | L |
| Battery Size | 55B24R | - |
| Pin Diameter/Arm Width | 30π/95.5 | mm |
| Emission/Noise Regulations | Third Stage Emission/Ultra-Low Noise | - |
| Rubber Track (Size/Quantity) | 230/74 | mm/pcs |
The U-17-3α is equipped with a low-emission engine compliant with third-stage emission regulations. This Kubota-developed engine delivers increased power output while effectively reducing noise. As one of the few manufacturers capable of producing engines from the casting stage, Kubota's extensive experience and advanced technology ensure superior engine performance for demanding job sites.
The U-17-3α features adjustable track width for operation in various confined spaces. Simple joystick operation allows easy track width adjustment. During transport, the track width can be reduced to 990mm for passage through narrow spaces or transportation via 2-ton trucks. During operation, the track width expands to 1240mm for enhanced stability.
The rear-mounted boom cylinder design positions the cylinder behind the boom, protecting it from damage. This configuration proves particularly advantageous during truck loading operations, eliminating concerns about cylinder collisions and improving both efficiency and safety.
The Hydraulic Matching System (H·M·S) utilizes three independent hydraulic pumps to power the boom, arm, and swing functions respectively. This design, combined with a control valve offering wider operating ranges and a variable displacement pump, delivers exceptional hydraulic performance. The optimized coordination between the three hydraulic pumps enables smooth combined operations of the bucket, boom, arm, and swing functions.
The standard SS key security system incorporates an embedded IC chip. The engine only starts when the machine recognizes authorized key information. Even with identically shaped keys, unauthorized duplicates cannot start the machine. The system simultaneously locks the electrical, hydraulic, and fuel systems for comprehensive theft protection.
The digital display allows operators to toggle between time, hour meter, and engine speed with a single button. The LCD screen also displays error codes and works with warning lights to alert operators to overheating, hydraulic system abnormalities, and charging system issues. The intuitive design provides clear, accessible information about machine status.
The full-opening engine cover design allows tool-free access to the rear and left-side engine compartments for routine inspection and maintenance of the engine and fuel system. For more extensive maintenance, both rear and left-side covers can be removed within minutes for thorough internal inspection and servicing.
The Kubota U-17-3α mini excavator's compact size and powerful performance make it suitable for various construction scenarios:
| Item | Value (mm) | Description |
|---|---|---|
| Maximum Digging Height | 3710 | - |
| Maximum Dumping Height | 2490 | - |
| Maximum Digging Depth | 2310 | - |
| Maximum Vertical Digging Depth | 2020 | - |
| Maximum Digging Radius | 3870 | - |
| Minimum Swing Radius | 1780 | With short arm |
| Dozer Height | 275 | - |
| Dozer Width | 990/1240 | Track retracted/extended |
The Kubota U-17-3α mini excavator combines compact dimensions, exceptional performance, and advanced technology to serve as an ideal solution for confined space operations. Whether for municipal projects, construction work, or landscaping applications, the U-17-3α delivers efficient operation, flexible maneuverability, and reliable safety features to maximize user value. This comprehensive analysis of the U-17-3α's technical specifications, performance advantages, and application scenarios provides valuable insights for equipment selection and utilization.