Product Overview
The DZ90A Electric Vibratory Hammer is a mid-to-heavy-duty piling solution from the renowned DZ Series. Suspended easily from crawler cranes (min. 50 t capacity), this machine performs both pile driving and extraction with outstanding efficiency. It is specifically designed for foundation contractors in Vietnam, India, and Russia who need a balance of power, portability (5.58 t), and low environmental impact.
The DZ90A handles a wide range of pile types: steel sheet piles (for retaining walls and cofferdams), I-beams, H-sections, steel pipe piles, precast concrete piles (square/round), and stone columns for ground improvement.
Key Features of DZ90A
- Eco-Friendly & Low-Noise Operation
Minimizes disturbance near residential or protected areas – a critical advantage for urban projects in Vietnam and India.
- High-Grade Vibration-Resistant Motor
A leading domestic brand motor rated at 90 kW ensures stable, long-lasting performance under continuous high-intensity vibration. Works reliably in Russian sub-zero conditions with proper cold-weather grease.
- Intelligent Wireless Remote Control
The integrated distribution box features wireless remote control, enhancing operator safety. The baked enamel finish provides superior rust resistance – essential for humid coastal sites in Southeast Asia.
- Renowned Frequency Converter
Simplifies troubleshooting and maintenance, reducing downtime. Local technicians in India or Vietnam can easily service the unit.
- Single Clamp Type
Optimized for standard pile sizes. Simple and robust, reducing potential failure points.
Technical Specifications (DZ90A)
| Parameter |
Value |
| Motor Power |
90 kW |
| Vibration Frequency |
1050 r/min |
| Eccentric Moment |
460 N·m |
| Exciting Force |
570 kN |
| Amplitude (No Load) |
10.0 mm |
| Allowable Extraction Force |
240 kN |
| Height |
2.56 m |
| Length |
1.53 m |
| Width |
1.1 m |
| Total Weight |
5,580 kg |
| Cable Size |
70 mm² |
| Clamp Type |
Single |
| Suitable Pile Diameter |
Up to 1200 mm (recommended for steel pipe piles ≤ 1200 mm; for concrete piles consult amplitude compatibility) |
| Required Generator Power |
≥ 200 kW |
| Minimum Crane Capacity |
≥ 50 t |
The DZ90A is part of the DZ30A–DZ240A family, offering full compatibility with standard lifting equipment.
Advantages for Target Markets
| Market |
Specific Advantage |
| Vietnam & SE Asia |
5.58 t weight allows easy transport by road. Rust-resistant coating stands up to high humidity and saline air. Low noise (no hydraulic hammer bang) suitable for night work permits. |
| India |
Works with common 200 kVA generators. Simple single-clamp design reduces maintenance cost. Handles diverse soils from soft alluvial (Ganges plain) to hard laterite. |
| Russia |
Vibration motor performs at -20°C with proper lubrication. High extraction force (240 kN) helps pull piles from frozen ground or permafrost. |
Typical Applications
- Driving steel sheet piles for cofferdams in river bridges (Vietnam’s Mekong Delta)
- Extracting H-beams after temporary shoring (Mumbai metro construction)
- Installing stone columns for ground improvement (soft soil in Jakarta or Bangkok)
- Precast concrete pile driving (up to 1200 mm diameter) with amplitude check)
- Steel pipe pile installation for port terminals (Chennai or Vladivostok)
FAQ – DZ90A
Q1: What generator size do I need for the DZ90A in India?
A: Minimum 200 kW. We recommend 250 kW to allow for voltage fluctuations and cable losses.
Q2: Can the DZ90A extract sheet piles buried in clay for 2 years?
A: Yes. The 240 kN allowable extraction force combined with 570 kN exciting force will loosen most cohesive soils. Pre-vibration for 10–20 seconds is recommended.
Q3: Is wireless remote control reliable in rainy conditions (Vietnam)?
A: The control box is IP-rated with baked enamel coating. Keep the receiver unit dry. A wired backup is not included but can be requested.
Q4: What maintenance is needed for Russia’s winter?
A: Use low-temperature grease (e.g., Mobilith SHC 100) in the vibratory case. Check cable flexibility (70 mm² cable remains flexible down to -30°C if using rubber-insulated type).
Q5: Which pile types are NOT suitable?
A: Very large diameter concrete piles (>1200 mm) may require higher amplitude. For those, consider DZ150A or DZ240A.
Q6: Does the DZ90A come with a crane?
A: No. You need a crawler crane of at least 50 t capacity (e.g., Hitachi, Kobelco, or XCMG).
Q7: Can I use it for both driving and extraction without changing setup?
A: Yes. The same clamping system works for both operations. Use wireless remote to reverse the eccentric moment direction.
Why Choose DZ90A Over Competitors?a
- Better power-to-weight ratio (90 kW / 5.58 t) than many hydraulic vibratory hammers.
- Lower noise – no hydraulic power pack noise, only electric motor hum.
- Lower total cost of ownership – no hydraulic oil changes, fewer moving parts.
- Globally supported frequency converter – common components available in Ho Chi Minh City, Delhi, and Moscow.
