Mining Quarry Equipment Coal Mining Machinery Seam Shearer MG300 700-WD

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Section : Machinery
Category : Construction Machinery
SKU : 1600638723213

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Products Description

Coal Mining Machinery Shearer MG300/700-WD

MG300 / 700-WD series AC variable frequency electric traction shearer, installed the total power of 498.5kW, 598.5kW, 698.5kW,
respectively, the depth of power were 2 × 200kW, 2 × 250kW, 2 × 300kW, traction power of 2 × 40kW, increase the motor power
18.5kW, the use of AC variable frequency speed control system to control the shearer traction speed.

MG300 / 700-WD series AC variable frequency electric traction shearer, the use of multi-motor drive horizontal arrangement, cutting the rocker pin with the traction part of the connection, left and right traction and intermediate box, the use of high-strength hydraulic bolt connection. In the traction gear box is equipped with asynchronous traction motor, through the traction mechanism for the shearer to provide 520kN traction, the middle of the control box is equipped with adjustable pumping stations, electronic control, transformers, water valves, each major components from the old Pond side out, easy to repair, easy to replace.

Can be used in the air of coal dust, methane explosive gas concentration does not exceed the "coal mine safety regulations" in the provisions of the safety content of the mine used; and at an altitude of not more than 2000m, the surrounding medium temperature of -5 ºC ~ +40 ºC , The air humidity is not more than 95% (at + 25 ° C).

The shearer is suitable for use with the corresponding hydraulic support, various types of face conveyor supporting the
realization of comprehensive mechanized coal mining or caving coal mining; also with the corresponding face conveyor, single hydraulic pillars, long steel beams or Metal hinge beam matching to achieve new high-grade general mining.

Product Parameters

project	unit	parameter
Adapt to coal seams
mining height range	(m)	1.8～4.0
Adapt to inclination	(°)	≤45
coal hardness	-	f2～f3
Overall parameters
plane height	(mm)	1426
Maximum mining height	(mm)	4000 (Ф2000 drum)
Undercut amount	(mm)	320 (Ф2000 drum)
cut depth	(mm)	630
coal pass height	(mm)	650
Maximum non-removable size	(mm)	3220×1030×830
Installed power	(kW)	2×300+2×40+18.5
Voltage	(V)	1140V
Machine weight	(t)	42t
cutting part
Cutting power	(kW)	2×300
rocker arm length	(mm)	2267
Swing angle of rocker arm	(°)	-16.3～+48.1
Rocker arm swing center distance	(mm)	5918
drum speed	(r/min)	31.4
Drum diameter	-	Ф1400/Ф1600/Ф1800/Ф2000
Traction Department
Traction power	(kW)	2×40
Traction type	-	AC variable frequency speed regulation, motor driven gear pin-rail type chainless traction
traction	( kN )	0～520
Traction speed	(m/min)	0～7.26
Manipulation	-
spray method	-	Internal and external spray
cooling method	-	Each motor, electric control box, rocker arm, and height-adjusted fuel tank are cooled separately
Matching conveyor	-	Compatible with SGZ730 series and SGZ764 series conveyors

Details Images

Shipping Timeframes: All orders are processed within 2-5 business days (excluding weekends and holidays). After your order has been processed, the estimated delivery time is before 14 Dec, 2026, depending on customs, Please note that due to high demand, some items may experience longer shipping times, which will be communicated at order confirmation email.
Order Processing Time: Please allow 2-5 business days for us to process your order before it is shipped . Orders placed after 16:00 on Fridays, or during weekends and public holidays, will begin processing on the next business day. Processing times may be extended during peak seasons or sales events.
Manufacturing Time: Some products needs manufacturing time, the manufacturing process will take approximately 10-30 business days depending on the product. This timeframe may vary depending on the complexity of the product and current demand. but this will be communicated with you during order confirmation.
Returns and Exchanges: We offer a 30-day return policy for most items. If you are not completely satisfied with your purchase, you may return it within 30 days of receipt for a refund or exchange. Items must be unused, in their original packaging, and accompanied by proof of purchase. Return shipping costs are the responsibility of the customer, unless the item was damaged or defective upon arrival.

1. What is the MG300/700-WD seam shearer?

The MG300/700-WD is an AC variable-frequency electric traction seam shearer series designed for mechanized coal face mining or caving. It uses multi-motor horizontal drive, chainless pin-rail traction and is suitable for integration with hydraulic supports and face conveyors.

2. What power configurations are available?

The series is offered with total installed power options of approximately 498.5 kW, 598.5 kW and 698.5 kW. Typical configuration shown is 2×300 kW cutting motors + 2×40 kW traction motors + an 18.5 kW auxiliary motor (total 698.5 kW). Earlier variants use 2×200 kW or 2×250 kW cutting motors.

3. What are the cutting/drum specifications?

Drum diameters available: Φ1400, Φ1600, Φ1800, Φ2000. Cutting power (example high‑power configuration) is 2×300 kW. Drum speed is 31.4 r/min. Rocker arm length is 2267 mm with a swing angle of -16.3° to +48.1°. Typical cut depth is 630 mm and undercut amount for Φ2000 drum is 320 mm.

4. What mining heights and seam ranges does it support?

The shearer is suitable for mining heights from 1.8 m to 4.0 m. Maximum mining height listed is 4000 mm (when fitted with a Φ2000 drum). Plane height is 1426 mm and coal pass height is 650 mm.

5. What traction performance does the machine provide?

Traction motors are 2×40 kW (AC asynchronous), providing a traction force up to 520 kN. Traction is AC variable-frequency controlled with a speed range of 0–7.26 m/min and chainless pin-rail type drive.

6. What environmental and operating conditions are required?

Designed for use where coal dust and methane concentrations do not exceed limits in coal mine safety regulations. Suitable for altitudes ≤2000 m, ambient temperatures −5 °C to +40 °C, and relative humidity up to 95% at +25 °C.

7. Which conveyors and support systems is it compatible with?

The shearer is compatible with SGZ730 and SGZ764 series face conveyors and can be used with corresponding hydraulic supports, single hydraulic pillars, long steel beams or metal hinge beams for different mining methods.

8. How is cooling and spray handled?

The machine uses internal and external spray systems. Cooling is provided separately for each motor, the electric control box, the rocker arm, and the height‑adjusted fuel tank to ensure reliable thermal management.

9. Is the machine designed for easy maintenance and parts replacement?

Yes. Major components (control box, transformer, pumps, valves, etc.) are arranged for easy access and removal from the side to simplify repair and replacement. The traction gearbox and drive components use modular designs and high‑strength hydraulic bolt connections.

10. What coal seam inclination and hardness can it handle?

The shearer is suitable for seam inclinations up to 45° and is rated for coal hardness roughly in the f2–f3 range.

11. What are the machine's weight and key dimensions to plan installation?

Typical machine weight is about 42 tonnes. Maximum non-removable assembly size is listed as 3220 × 1030 × 830 mm — heavy‑lift equipment and professional installation crews are required for transport and setup.

12. How does drum diameter choice affect performance?

Larger drum diameters (up to Φ2000) allow higher maximum mining heights and larger undercuts, while smaller drums may be used for lower seams or to reduce cutting torque. Selection should match seam height, desired cut depth and available motor power.

13. What safety features are included or recommended?

The shearer uses AC variable-frequency control for smooth traction and speed regulation, multi-motor drive for redundancy, high-strength hydraulic bolt connections and conforms to usage limits in coal mine safety regulations for methane and dust. Standard mine safety systems (gas detection, ventilation, grounding, emergency stops) must also be installed per local regulations.

14. What are typical wear parts and spare parts to keep in stock?

Typical consumables include cutting picks/teeth for the drum, rocker-pin and cutter linkage components, hydraulic bolts and seals, traction motor brushes/parts (if applicable) and control electronics spares. Keep critical electrical and hydraulic components on hand to minimize downtime.

15. Where can I get technical support, spare parts or commissioning help?

For parts, technical support, commissioning and maintenance procedures contact the manufacturer or authorized dealer directly. They can provide detailed manuals, recommended spare parts lists, and field service for installation and troubleshooting.