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The conventional down-the-hole drill can be equipped with modular diesel power units, making diesel engine transportation more convenient and electric motor operation more energy-efficient and environmentally friendly. Equipped with low-profile propellers, it can adapt to drilling operations in low and narrow spaces.
Dimensions

| Item | CY-MD211 Standard | CY-MD211 Low Profile | CY-MD211 Standard (Self-propelled) | CY-MD211 Low Profile (Self-propelled) |
| Tmin(mm) | 3393 | 2800 | 3393 | 2800 |
| Tmax(mm) | 5223 | 4230 | 5223 | 4230 |
| Mass (t) | 4.5 | 4.2 | 5.5 | 5.2 |
| Length (mm) | 3440 | 3440 | 3956 | 3956 |
| A(mm) | B(mm) | C(mm) | D(mm) | E(mm) | F(mm) | G(°) | H(°) | I(mm) |
| 3340 | 929 | 1700 | 545 | 192 | 492 | 90 | 10 | 3956 |
| J(mm) | K(mm) | L(mm) | M(mm) | N(mm) | P(°) | Q(mm) | S(mm) |
| 3440 | 1700 | 209 | 300 | 1789 | 21 | 1400 | 1525 |
Performance Parameters
| Item | Unit | Value | |
Working parameters | Pressure | Mpa | 0.6~2.4 |
| Holediameter | mm | 76~165 | |
| Holedepth | m | 0~100 | |
| Angle | 。 | -10~90 | |
Rotation parameters | Ratedtorque | KN.m | 4.5 |
| Peaktorque | KN.m | 7.2 | |
| Rotationspeed | pm | 0~28 | |
Propulsion parameters | Feedforce | kN | 0~81 |
| Liftingforce | kN | 0~81 | |
| Feeddistance | mm | Standardconfiguration:1865 Optional:1365 | |
Walking parameters | Walkingspeed | kmh | 0~2.5 |
| Gradeability | 。 | 14 | |
| Ground clearance | mm | 209 | |
Power parameters | Voltage | V | Standard configuration:380(Optional:660/1000/1140) |
| Motor power | kW | 22 | |
| Diesel power | kW | 36 | |
Optional Configuration
| Bidirectional shock absorption power head | New dust collection hoodshock absorption power head | Wide operating range |
| A fexible connection between the power head and drill rod efiectively isolates the impact and rotational vibrations from the impactor to thedrill, ensuring higher operational reliability. | Featuring a dual-seal structure and fexible ground contact, this new design efiectively prevents rock debris from being cjected towards the drilrig, ensuring safer operations. | 360-degree circular operation, with variable angles and hole diameter coverage ranging from 76 to 165mm. |
Functional Configuration
Series FunctionalConfiguration | CY-MD211 standard | CY-MD211 low-profile | CY-MD211standard (self-propelledtype) | CY-MD211low-profile (self-propelledtype) | |
| Line-of-sight remote control | ● | ● | ● | ● | |
| Diesel power pack | O | O | ● | ○ | |
Drilling holediameter | 76~90mm | O | O | O | O |
| 90~115mm | O | O | O | O | |
| 110~135mm | O | O | O | O | |
| 136~155mm | O | O | O | O | |
| Rodlength | 1.5m | ● | O | ● | O |
| 1m | O | ● | O | ● | |
Specification ofimpactor | 2inches | O | O | O | O |
| 3inches | O | O | O | O | |
| 4inches | O | O | O | O | |
| 5inches | O | O | O | O | |
| 6inches | O | O | O | O | |
●Standard ○Optional
Note: For customers in high-cold and high-altitude areas, we will develop a complete set of systematic solutions for use in high-cold and high-altitude environments.
Keywords:
CONVENTIONAL DOWN-THE-HOLE DRILL CY-MD221
Previous:
CONVENTIONAL DOWN-THE-HOLE DRILL CY-MD221
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Address: Building C3, Huanchuang Enterprise Plaza, 2450 Yuelu Avenue West, Changsha, Hunan Province, P.R.C.
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