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RB777 Heavy-Duty Pneumatic Jack Hammer (Concrete Paving Breaker)
Weight: 37 kg (Heavy Duty)
Type: Pneumatic Paving Breaker
Impact Frequency: 1100 BPM
Application: Concrete demolition, Road crushing
Feature: High crushing power, Durable
- Technical Specifications
RB777 Heavy-Duty Pneumatic Jack Hammer (Paving Breaker)
The RB777 Jack Hammer (also known as a Pneumatic Paving Breaker) is a heavy-duty crushing tool powered by compressed air. Internationally recognized for its reliability, the RB777 is the premier machine for breaking hard materials on highways, bridges, and in mines. Its robust, simple structure is designed for tough demolition jobs where sheer impact power is needed.
Key Features & Benefits
● Powerful Impact Force: Engineered to deliver maximum energy (1100 BPM) for breaking hard concrete, asphalt, and rock instantly.
● Heavy-Duty Durability: Constructed with high-quality forged steel to withstand the most demanding job site conditions.
● Low Maintenance: Features a straightforward design with fewer moving parts, making on-site repair simple and fast.
● Proven Reliability: A globally trusted design (Tokudo style) used by professional demolition contractors worldwide.
Main Applications
Road maintenance: Asphalt and concrete crushing.
Bridge demolition: Fast removal of reinforced decks.
Secondary breaking in mining and quarrying.
Civil Engineering: Breaking frozen ground and foundations.
Model Selection: RB777 vs B87C Breaker
| Feature | RB777 (High Efficiency) | B87C (Heavy Crusher) |
|---|---|---|
| Impact Rate | 1100 BPM | 850 BPM |
| Weight | 38.7 kg | 39 kg |
| Best Use | Bridge & Road Surface | Heavy Foundation |
Technical Specifications (RB777)
| Parameter | Value |
|---|---|
| Recommended Air Pressure | 6 bar (87 lbf/in²) |
| Air Consumption (@ 6 bar) | 34 liters/sec (72 ft³/min) |
| Blow Frequency (@ 6 bar) | 1100 /min |
| Cylinder Bore | 57 mm (2 1/4 in) |
| Piston Stroke | 189 mm (7 3/16 in) |
| Shank Size (Hex) | 32 mm (1 1/4 in) x 152 mm (6 in) |
| Air Inlet Thread | G 3/4 B |
| Lubricator Capacity | 30 ml (Integral type) |
| Width over Handle | 430 mm (16 1/4 in) |
| Weight (with Latch Retainer) | 38.7 kg (85 1/4 lb) |
| Weight (with Stirrup Retainer) | 37.4 kg (82 lb) |
| Noise Level | 114 Lwa |
| Vibration Level | 22.2 m/s² |
💡 Demolition Tip: Silent vs. Impact
RB777 is perfect for heavy impact work. For vibration-free demolition in sensitive areas, pair it with our: Soundless Cracking Agent (HSCA)
Complete RB777 Spare Parts List
Expandag supplies all genuine RB777 replacement parts. Use the part numbers below to request a precise quotation and ensure your paving breaker maintains peak operational efficiency.
| Item No. | Part No. (PSRT NO) | Spare Part Name (English) |
|---|---|---|
| 1 | RB777-18 | Pick handle cover (A) |
| 2 | GB1235- | O-seal ring |
| 3 | RB777-22 | Plug |
| 4 | RB777-01 | Rammer back head |
| 5 | RB777-13 | Control handle |
| 6 | RB777- | Bar φ 3x6 |
| 7 | RB777-24 | Oil plug |
| 8 | GB879 | Spring column pin 6.5x12 |
| 9 | RB777-16 | Side bolt |
| 10 | RB777-17 | Nut |
| 11 | RB777-02 | Cylinder |
| 12 | RB777-06 | Rammer (Piston) |
| 13 | RB777-14 | Yoke bolt |
| 14 | RB777-10 | Punch |
| 15 | RB777-05 | Guide sleeve |
| 16 | RB777-03 | Front head |
| 17 | RB777-12 | Yoke spring |
| 18 | RB777-28 | Yoke pin |
| 19 | RB777-29 | Block pin pad post |
| 20 | RB777-15 | Yoke nut |
| 21 | RB777-20 | Yoke axis |
| 22 | RB777-25 | O-seal ring |
| 23 | RB777-04 | Yoke |
| 24 | RB777-19 | Handle cover(B) |
| 25 | GB879 | Elastic column pin |
| 26 | RB777-23 | Jib pipe |
| 27 | RB777-26 | Jib pin |
| 28 | RB777-27 | Clogging ball valve |
| 29 | RB777-21 | Ball valve spring |
| 30 | RB777- | Choke |
| 31 | RB777-11 | Air connection tube |
| 32 | RB777-08 | Valve chest pad |
| 33 | RB777-09 | Valve core |
| 34 | RB777-07 | Valve chest |
RB777 Pneumatic Jack Hammer FAQs & Troubleshooting
Q: What size air compressor is required for the RB777 jackhammer?
A: It requires at least 34 L/s (72 cfm) of air volume at 6 bar (87 psi). For peak demolition efficiency in continuous field use, we recommend a 100-125 CFM portable diesel air compressor.
Q: Why choose the RB777 over the B87C for road paving breaking?
A: The RB777 offers a significantly higher impact frequency (1100 BPM vs 850 BPM). This high frequency allows it to crush asphalt and bridge decks much faster, while the B87C is better suited for heavy, deep foundations.
Q: Are your RB777 parts compatible with the Tokudo brand?
A: Yes. All our RB777 spare parts are manufactured to original Tokudo technical standards, ensuring full compatibility with global standard jack hammers.
Q: How do I properly lubricate the RB777 breaker to prevent seizing?
A: The RB777 has an integral oil feed system. Ensure you fill the 30ml oil chamber regularly with specialized rock drill oil or SAE 30W oil. Never operate the machine dry, as it can cause cylinder scoring.
Q: What should I do if the RB777's impact force starts dropping?
A: First, check if your compressor is delivering a steady 6 bar pressure. Second, check the air connection tube (RB777-11) for blockages and ensure the valve core (RB777-09) is not stuck due to lack of lubrication.
Q: What type of steel bits do the RB777 accept?
A: It accepts standard Hex 32 x 152 mm (1 1/4 x 6 in) shank steel bits. You can easily fit moil points for concrete crushing or flat chisels for asphalt cutting.
