YGZ90 Drifter Drill
●High Stability: Independent impact and rotation structures allow separate adjustment based on rock conditions, minimizing rod jamming risks.
●Applications: Metallurgical mining, rock excavation, tunnel roof bolting, and medium-deep blasthole drilling.
●Quality Assurance: Over 50 years of R&D and strict quality control have earned us an excellent industry reputation.
Introduction:
The YGZ90 Drifter Drill is one of the independent rotary rock drill series products developed and manufactured by our company. This model is used in conjunction with FJY25, FJY22 disc-type drill rigs or CTC14B mining drill rigs as a medium-deep hole drilling equipment powered by compressed air. The YGZ90 guide rail rotary rock drill features high rotation torque, efficiency, and operational safety, making it less prone to rod jamming in rock formations with well-developed joints, fractures, or cavities.
Specifications
|
Weight |
kg |
90 |
|
|
L ×W×H |
mm |
850X300x300 |
|
|
Air pressure |
MPa |
0.5 |
0.63 |
|
Air consumption |
L/S |
≤215 |
≤217 |
|
impact energy |
J |
≥190 |
≥225 |
|
Impact frequency |
Hz |
≥31 |
≥34 |
|
torque |
N.m |
≥350 |
≥450 |
|
idle speed |
r/min |
≥220 |
≥300 |
|
noise |
dB(A) |
≤132 |
≤132 |
|
air pressure |
MPa |
0.5～0.63 |
|
|
water pressure |
MPa |
0.4 |
|
|
inner diameter of the impact air pipe |
mm |
38 |
|
|
inner diameter of the rotation air pipe |
mm |
25 |
|
|
Water hose size |
mm |
φ19 |
|
|
Bore dia. |
mm |
φ50～80 |
|
|
Shank size(Hex.×L) |
mm |
φ 38×97 |
|
Product feature and application
Features ：
Independent rotation design: The impact and rod rotation structures are separate, allowing independent adjustment of impact energy and drill rod speed, minimizing rod jamming risks. Suitable for medium-hard to hard rock formations (F=8-18), with a drilling diameter of 50-80mm and an effective hole depth of up to 25 meters.
Optimized design: The gear-type air motor is positioned at the upper part of the rock drill to reduce the overall length and lower the center of gravity, making it more suitable for operation in narrow underground mining stopes.
High-efficiency power: Valve-less air distribution technology ensures high compressed air utilization, while the piston's high-speed reciprocating motion enhances drilling speed.
Reliable and durable: Made of alloy steel, with a gear air motor driving the rod rotation system and a two-stage spur gear reduction design to extend service life.
Application：
• Underground mining: Fan-shaped/ring-shaped blasthole drilling (e.g., metallurgical mining)
• Open-pit projects: Medium-deep hole operations such as anchor holes and slope protection holes
• Special conditions: High-stability drilling in fractured or cavity-prone formations
product details
Guide rail structure: High-precision guide rails paired with smooth sliders ensure accurate positioning of the drill bit during operation, minimizing deviation and improving hole quality.
Forging and heat treatment: Advanced forging and heat treatment techniques enhance the hardness and toughness of core components.
Structural optimization: The gear-type air motor is positioned at the upper part of the rock drill to reduce the overall length and lower the center of gravity, making it more suitable for operation in narrow underground mining stopes.
why choose us?
1.High-efficiency drilling for complex geology
Powerful impact and independent rotation: Impact energy ≥225J, rotation torque ≥450Nm, utilizing valve-less air distribution technology to optimize compressed air utilization, ensuring efficient drilling even in hard rock formations (F8-18).
Anti-jamming design: High rotation torque enables quick recovery in fractured or cavity-prone strata through weak impact combined with strong rotation, minimizing downtime.
2.Flexible adaptation to multiple working scenarios
Suitable for both underground and open-pit operations: Can be used in underground mining stopes for upward fan-shaped/ring-shaped blastholes (hole depth 25m), or paired with open-pit drill rigs for horizontal/downward drilling (e.g., anchor holes, slope protection projects).
Compact structure: Dimensions 850×300×300mm, weight only 90kg, suitable for narrow tunnels, and seamlessly compatible with FJY25 and FJY22 disc-type drill rigs.
3.Reliability and low maintenance costs
Durable materials and lubrication system: Alloy steel body paired with gear air motor drive and two-stage reduction design extends service life; continuous oil lubrication (recommended No. 30/20 engine oil) minimizes high-speed friction damage.
Customer reputation: Leading annual sales with low failure rate feedback, particularly suitable for long-term high-intensity operations.
YGZ90 structure diagram
FAQ
Q: What are the common faults of the YGZ90 Drifter Drill and their troubleshooting methods?
A:
|
No. |
Phenomenon |
Cause |
Troubleshooting Method |
|
1 |
Abnormal machine sound |
Loose or unevenly tightened fastening bolts; Slight scoring on piston, cylinder, etc. |
Tighten the fastening bolts evenly; Disassemble, inspect and repair |
|
2 |
Abnormal piston movement (intermittent impacting) |
Scoring between piston and cylinder or gas distribution body; Uneven tightening force of long studs |
Disassemble the piston and carefully polish the scored areas with an oilstone; Adjust the tightening force appropriately |
|
3 |
Severe water backflow or frost formation at the exhaust port |
Damaged water needle or drill tail seal ring; Excessive moisture in the compressed air |
Replace damaged parts; Reduce moisture in the compressed air |
|
4 |
Reduced drilling speed |
Non-compliant drill tail length; Piston face wear exceeds 3mm |
Replace the drill tail and piston |
Note: When replacing damaged parts, only use components manufactured by our company. Otherwise, we will not be responsible for any resulting consequences.
Q: What are the precautions for using the YGZ90 Drifter Drill?
A: The YGZ90 guide rail independent rotary rock drill features high and adjustable rotation torque, making it less prone to rod jamming when drilling fractured or cavity-prone rock formations. Even if jamming occurs, it can be resolved using weak impact combined with strong rotation. The drill's optimal axial thrust range is wide, ensuring ease of operation. The key operational guidelines are outlined below:
For different rock types, adjust the impact energy, rotation speed, and axial thrust based on debris removal conditions to achieve higher drilling efficiency. For medium-hard rocks, moderately reduce impact force while increasing rotation speed, and avoid excessive thrust. For hard rocks, increase impact force, lower rotation speed, and apply greater thrust.
When encountering fractures or cavities that cause rod jamming, reduce the impact force and increase the rotation speed, or even stop the impact entirely and rely solely on rotation to pass through the jammed area and resolve the issue.
Due to the valve-less air distribution design, the working air pressure should not be lower than 0.5MPa.
The flushing water pressure should not be lower than 0.4 MPa.
The rock drill must maintain good lubrication conditions to prevent localized overheating and scoring on friction surfaces (especially the mating surfaces between the piston, cylinder, and air distribution components) during high-speed operation.
Lubricating oil can be selected as No. 20 or No. 30 engine oil based on the ambient temperature of the working environment.
Lubricating oil can be selected as No. 20 or No. 30 engine oil based on the ambient temperature of the working environment.
The drilling tools used must meet quality requirements.
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