PX-40B 4-ton compact crawler excavator for reinforced earthwork, with 0.20 m³ bucket, 2545 mm digging depth and flexible configuration.
The PX-40B is a 4-ton compact crawler excavator developed for contractors who need sustained earthmoving capability in confined working areas. Sharing the proven PX-40 platform, this variant emphasizes flexible configuration and durable construction for reinforced and continuous earthwork. It suits municipal projects, foundation sites, utility trenching, and cab-operation conditions where uptime, serviceability, and predictable operating costs matter as much as raw digging force.
The PX-40B combines a compact body, about 1700 mm wide, with a 4.0 t operating class rating to deliver usable power in spaces that larger machines simply cannot enter. Its Changchai 490 class diesel configuration around 34 kW provides a steady power reserve for trenching, light foundation work, and truck-loading cycles, while the reinforced frame and boom structure are matched to repeated load and shock conditions.
With approximately 2545 mm of maximum digging depth and 3050 mm of dumping height, the PX-40B covers typical trench and bank-working envelopes without requiring repositioning. The 0.20 m³ class bucket and optional attachment packages extend the machine from general earthmoving into grading, loading, and break-out support tasks. Cab-oriented operation, accessible maintenance points, and tailored configuration help fleet owners standardize on a dependable 4-ton workhorse.
| Parameter | Value |
|---|---|
| Operating class | 4.0 t class |
| Bucket capacity | approx. 0.20 m³ |
| Power configuration | Changchai 490 / 34 kW etc. |
| Machine width | approx. 1700 mm |
| Max. digging depth | approx. 2545 mm |
| Max. dumping height | approx. 3050 mm |
| Applications | Reinforced, continuous earthwork with cab operations |
| Overall dimensions | Subject to configuration |
| Hydraulic system | Subject to configuration |
The PX-40B is well suited to reinforced and continuous earthwork in municipal, foundation, utility, and small-to-mid construction projects. Its 4-ton class power and compact footprint let operators maintain productive trenches and loading cycles in narrow urban sites, while cab-operation support and flexible configuration keep the machine working comfortably through all-weather and demanding site conditions.

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