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Longwall

Shearers

  • Cutting height 1.5 - 4.5 m 4.5 - 14.8 ft.
  • Haulage pull 800 - 1 000 kN 90 - 112.5 tons
  • Machine weight 52 - 82 tonnes 57.5 - 90.5 tons

Features and benefits

Modular shearer.psd

Adaptable modular design

Three high-tensile fabrications comprise the body of the Joy shearer, forming a slim main section with no under-frame. Eliminating the under-frame allows more material passage under the body, easier transport, quicker adaptation to different mining scenarios, efficient rebuilds, easier maintenance.
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Rigorously tested gear design

Be confident your shearer will offer outstanding reliability. Ranging arm and haulage gear trains consist of robust spur gears incorporating decades of experience. State-of-the-art gear design software and meticulous load-testing help make the Joy shearer even more reliable.
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Haulage sections built to exacting standards

Primary haulage gear case contained in a frame mounted to both sides of controller case. Inside the gear case are straight-cut spur gears manufactured to exacting standards. 7LS shearer can match tractive effort increase delivered by higher power-density motors.
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Custom-designed drums

Experience the difference custom-designed drums can make for your operation. Using a three-axis digital lacing machine to manufacture custom-designed drums results in precise bit locations and angles. Final machining is accomplished with CNC turning centers to achieve precise fit.
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Choose the best Cowles blade for your site

Equip your shearer with “T” style or “D” style Cowles blades. More compact “T” Cowles blades may perform better in drum loading by allowing more free-flowing material. Wider “D” Cowles blades are stronger, can take more abuse in harsh conditions.
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Easy access controller case

The controller case, which forms the center section, contains the electric control system. Features include easy gob-side access to the electrical controller section and motors, quick access for routine maintenance, in a safer working environment.
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Automated cutting sequences

Highly efficient cycle times, consistency and reduced operator exposure to dust and noise. Fully programmed automated cutting sequences, including gate end turnarounds. Includes optimal drum positioning with automation software that positions the drum at a height that maintains a pre-configured pitch angle to the pans.
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Simple, reliable remote operation

Remotely operate the shearer with an HHX remote. Uses reliable two-way radio communication to control the shearer. Displays operational and diagnostic information on integrated LCD screen. Removable, large capacity battery pack allows long intervals between charges.
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Optional trapping shoe inserts

Keep production going and reduce operating costs and increase your journey to zero harm by utilizing Komatsu trapping shoe wear inserts on your shearer. They increase the time between lengthy and expensive shoe replacements and at only 32 kg (70 lbs.) are relatively simple to install.
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OptiDrive system

A transmission design that provides you with an adaptable, rugged and reliable solution for shearer traction systems. The medium voltage OptiDrive system integrates the variable speed drive with the motor to achieve outstanding speed and torque control for soft starts and stops and fast acceleration.
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Faceboss

Optimize your operation with actionable insights. Operator assistance tools, automated sequences, advanced diagnostics and machine performance monitoring from the Faceboss Control System.
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Advanced shearer automation

If you’re intent on increasing your productivity and reducing operator exposure to dust and noise, our latest shearer steering technology gives you access to fully automated cutting sequences, including gate end turnarounds. 

Specifications for longwall shearers

Close all Expand all
US system Metric
Cutting height
7LS1D 1.5 - 3.9 m
7LS2B 1.6 - 3.8 m
7LS5B 2 - 4.5 m

7LS1D 4.5 - 9.8 ft
7LS2B 5.25 - 12.5 ft
7LS5B 6.6 - 14.8 ft

Machine height
7LS1D 1.0 - 1.3 m
7LS2B 1.1 - 1.5 m
7LS5B 1.4 m - 2.1 m

7LS1D 3.3 - 4.3 ft
7LS2B 3.75 - 4.8 ft
7LS5B 4.6 - 6.75 ft

Machine weight
7LS1D 52 tonnes
7LS2B 65 tonnes
7LS5B 82 tonnes

7LS1D 57.5 tons
7LS2B 72 tons
7LS5B 90.5 tons

Frame thickness
7LS2B 521 - 588 mm (angled top)
7LS5B 600 mm

7LS2B 20.5 - 23 in
7LS5B 23.6 in

Haulage pull
7LS1D 800 kN
7LS2B 800 kN
7LS5B 1 000 kN

7LS1D 90 tons
7LS2B 90 tons
7LS5B 112.5 tons

Maximum haulage speed
7LS2B 30 m/min
7LS5B 30 m/min

7LS2B 98 ft./min
7LS5B 98 ft./min

Pump motor
7LS1D 2 @ 11 kW
7LS2B 2 @ 21 kW
7LS5B 2 @ 21 kW

7LS1D 2 @ 15 HP
7LS2B 2 @ 28 HP
7LS5B 2 @ 28 HP

Haulage motor
7LS1D 2 @ 65 kW
7LS2B 2 @ 110 kW
7LS5B 2 @ 110, 150 kW

7LS1D 2 @ 87 HP
7LS2B 2 @ 148 HP
7LS5B 2 @ 148 HP

Lumpbreaker motor
7LS2B 120 kW
7LS5B 120 kW, 190 kW

7LS2B 1 @ 161 HP
7LS5B 1 @ 161 HP

Lumpbreaker motor
7LS1D 2 @ 600 kW

7LS1D 2 @ 804 HP

Available ranging arms
7LS2B 

Available Ranging Arms / Cutter kW (US 60 Hz)

J525H / 675 kW ; J750A / 750 kW

7LS2B

Available Ranging Arms / Cutter kW (50 Hz)

J525F / 610 kW ; J750A / 750, 860 kW

7LS5B Available Ranging Arms / Cutter kW (US 60 Hz) J525H / 675 kW ; J750A / 750 kW
7LS5B Available Ranging Arms / Cutter kW (50 Hz) J525F / 610 kW ; J750A / 750, 860 kW
7LS2B

Ranging Arm Model / Cutter Power (HP)

J525H /905, J750/1006

7LS5B Ranging Arm Model / Cutter Power (HP) J525H /905, J750/1006
Support you can count on

Technology that works as hard as you do

If you’re intent on increasing your productivity and reducing operator exposure to dust and noise, our latest shearer steering technology gives you access to fully automated cutting sequences, including gate end turnarounds. You program an initial cutting profile and extraction height with a graphical offline planner, and the shearer automatically replicates the profile until conditions change. Your operator has the ability to override control of the roof drum to follow the preferred horizon, and this new profile can be used in the remainder of the cutting sequence automatically. This advanced level of automation enables you to pursue the most efficient cycle times with added consistency.

Miner looking at Faceboss screen on Joy shearer
Are you concerned that you’re not leveraging technology sufficiently in your longwall operation? The Faceboss RS20s system offers you a fully integrated, powerful roof support control system. It combines operator assistance tools, automated sequences, advanced diagnostics, machine performance monitoring and more to help you optimize your longwall mining. Data is integrated and shared between the shearer and the roof supports, resulting in consistent and efficient cycle times and minimizing the need for human intervention. 
Komatsu employees reviewing equipment data
Highly efficient cycle times, consistency and reduced operator exposure to dust and noise. Fully programmed automated cutting sequences, including gate end turnarounds. Includes optimal drum positioning with automation software that positions the drum at a height that maintains a pre-configured pitch angle to the pans.
Miner and longwall proximity detection system

More control is in your operators’ hands, as the RS20s standardizes the control system across all Komatsu longwall products. It can operate as a standalone system or integrate with powered roof supports and shearers. Commonality promotes easier parts management, maintenance and product support.

Learn more

Find what works for you