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G7 Pneumatic Pick Hammer (TCA-7 Equivalent) | 7.2kg Lightweight Air Breaker
• Impact Energy: ≥ 30J
• 100% TCA-7 equivalent parts
• Ideal for narrow spaces & overhead work.
Contact Expanda for factory direct pricing.
- Introduce
G7 Pneumatic Pick Hammer (TCA-7 Equivalent)
Lightweight 7.2kg Air Breaker for Mining, Concrete & Maintenance Work
The G7 Pneumatic Pick Hammer is a lightweight air-powered tool used for mining, concrete breaking, and maintenance applications. Ideal as a pneumatic breaker for concrete and soft rock, the G7 is widely recognized in global markets as a direct and reliable TCA-7 equivalent. Its compact 7.2kg body allows operators to perform horizontal and overhead drilling where heavier breakers would be too fatiguing.
In practice, the G7 and TCA-7 air pick share the exact same internal structure and performance metrics. At Expandag, our G7 model utilizes high-strength alloy steel for the cylinder and piston, ensuring that even under the high-frequency impact of 21.6 Hz, the tool maintains structural integrity and stable air consumption.
Technical Specifications: G7 / TCA-7 Air Pick
| Technical Parameter | Specifications / Performance Data | Unit | ||
|---|---|---|---|---|
| Overall Dimensions (L×W×H) | 465 × 160 × 110 | mm | ||
| Net Weight | 7.2 | kg | ||
| Cylinder Diameter | 35 | mm | ||
| Piston Stroke | 120 | mm | ||
| Piston Weight | 0.6 | kg | ||
| Working Air Pressure | 0.4 - 0.5 (Max 0.63) | MPa | ||
| Performance vs. Air Pressure | @ 0.63 MPa | @ 0.5 MPa | @ 0.4 MPa | - |
| Impact Energy | ≥ 33 | ≥ 30 | ≥ 23 | J |
| Impact Frequency | ≥ 21.6 | ≥ 21.6 | ≥ 20 | Hz |
| Air Consumption | ≤ 26 | ≤ 20 | ≤ 15 | L/s |
| Air Hose Inner Diameter | 19 | mm | ||
| Shank Size | Ø24 × 70 (Standard) | mm | ||
G7 Pneumatic Pick Troubleshooting Guide
To ensure maximum uptime on site, refer to our engineer’s quick diagnostic chart for common pneumatic tool issues:
| Symptom | Possible Cause | Troubleshooting Solution |
|---|---|---|
| Decreased Efficiency | Low Working Air Pressure | 1. Reduce the number of operating tools. 2. Eliminate air leaks in the pipeline. 3. Shorten the air hose length. |
| Poor Lubrication | Oil is too thick, dirty, or missing. Replace with specified lubricating oil (e.g., N46). | |
| Moisture Inside Machine | High water content in compressed air. Install an air receiver (water trap) or bleed air frequently. | |
| Failed Components | Promptly replace worn out spare parts, such as a severely worn bushing. | |
| Hard to Start | Improper Lubrication | Oil is too viscous or overfilled. Clean and replace with the correct grade oil. |
| Moisture Inside Machine | High water content in compressed air. Install an air receiver or bleed air frequently. |
G7 / TCA-7 Spare Parts List
We supply a complete range of G7 jack hammer parts to ensure your equipment runs smoothly. All parts are 100% interchangeable with standard TCA-7 models.
| No. | Part Code | Part Name | Qty |
|---|---|---|---|
| 1 | G7-1 | Handle Body | 1 |
| 2 | 30X2.65 | O-Ring Seal | 1 |
| 3 | G7-3 | Cylinder | 1 |
| 4 | G7-4 | Bushing | 1 |
| 5 | G7-5 | Piston (Hammer) | 1 |
| 6 | G7-8 | Rubber Cushion | 2 |
| 7 | GB308 | Steel Ball | 1 |
| 8 | GB308 | Steel Ball (Small) | 3 |
| 9 | G7-11 | Valve Spring | 1 |
| 10 | G7-12 | Cover | 1 |
| 11 | 28.5X1.8 | O-Ring Seal | 1 |
| 12 | GB893.134 | Retaining Ring | 1 |
| 13 | G7-15 | Bolt | 2 |
| 14 | GB/T6170 | Hex Nut M12 | 4 |
| 15 | GB93 12 | Spring Washer | 2 |
| 16 | G7-18 | Spring | 2 |
| 17 | G7-19 | Head Spring | 1 |
| 18 | G7-20 | Exhaust Deflector | 1 |
| 19 | G7-21 | Conical Joint | 1 |
| 20 | G7-22 | Wing Nut | 1 |
| 21 | G7-23 | Hose Nipple | 1 |
| 22 | G7-24 | Moil Point / Pick | 1 |
| 23 | G7-25 | Pipe Joint | 1 |
| 24 | G7-61 | Valve Seat | 2 |
| 25 | G7-62 | Air Guide Box | 2 |
| 26 | G7-63 | Valve Cover | 2 |
| 27 | 15X2.65 | O-Ring Seal | 2 |
| 28 | No.1 | Throttle Valve | 1 |
Why Contractors Choose the G7 Air Hammer
The G7 is equipped with an automatic stop mechanism. When the pick bit is not pressed against the work surface, the hammer action ceases immediately. This prevents "idle hitting," a common cause of cylinder failure in other machines.
Highly Portable: At just 7.2kg, it is the go-to air pick hammer for mining and narrow trench work.
Durable Components: Forged from industrial alloy steel, the piston is built for abrasive underground conditions.
Easy Maintenance: Simplified valve structure allows for quick on-site cleaning and lubrication.
Frequently Asked Questions
Q: What is a G7 pneumatic pick hammer used for?
A: The G7 pneumatic pick hammer is primarily used for breaking concrete, asphalt, frozen soil, and soft rock in coal mining, construction, and municipal road maintenance projects.
Q: Is the G7 the same as the TCA-7 air pick?
A: Yes. The G7 pneumatic pick is widely recognized as a direct TCA-7 equivalent. Both models share the exact same internal structure, performance data, and 100% interchangeable spare parts.
Q: What air pressure is required for the G7 air hammer?
A: The recommended working air pressure is 0.4 - 0.5 MPa (58 - 72 psi). A stable air supply ensures maximum impact energy (≥30J) and prolongs the tool's lifespan.
Q: Can the G7 pick hammer be used for vertical or overhead work?
A: Yes. Due to its lightweight 7.2kg (15.8 lbs) design, it minimizes operator fatigue, making it highly suitable for horizontal, vertical, and overhead breaking applications where heavier machines are impractical.
Q: How often should I lubricate a pneumatic pick hammer?
A: Daily lubrication is mandatory. We recommend injecting specified pneumatic oil (such as N46 mechanical oil) before every shift to prevent internal piston wear and improve efficiency.
Q: What are the common problems of an air pick hammer?
A: Common issues include low impact power, moisture inside the cylinder, and starting failures. These are usually caused by low air pressure, poor lubrication, or worn seals (refer to our troubleshooting chart above).
Q: Do you supply spare parts for the G7 / TCA-7?
A: Yes. As a direct manufacturer, we supply a complete range of G7 spare parts at wholesale prices, including pistons, cylinders, valves, O-rings, and moil points, all fully compatible with TCA-7 models.
Need pricing or bulk supply for G7 pneumatic picks?
As a direct pneumatic tool supplier, we offer competitive G7 air pick price points, fast global shipping, and full spare parts support. Contact our team today for a quick wholesale quotation.
Maintenance Tip: To maximize the lifespan of your G7 / TCA-7 breaker, ensure the air line is equipped with an oiler. We recommend N46 mechanical oil for standard operations and N22 for cold weather environments (below 10°C).
