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Continuous miner

12HM46

  • Maximum cutting height 3 500 - 6 000 mm 138 - 237 in
  • Minimum cutting height 1 860 - 3 000 mm 73 - 118 in
  • Total machine power

    841 kW @ 2 300 V, 60 Hz

    841 @ 4 160 V, 60 Hz

    *1 251 kW @ 4 160 V, 60 Hz

    900 kW @ 3 300 V, 50 Hz


    *Optional, higher power cutterhead

    1,128 HP @ 2,300 V, 60 Hz

    1,128 HP @ 4,160 V, 60 Hz

    *1,678 HP @ 4,160 V, 60 Hz

    1,207 HP @ 3,300 V, 50 Hz


    *Optional, higher power cutterhead

Our largest and most powerful continuous miner

The largest and most powerful Joy drum-style continuous miner, with a machine mass of 154,000 kg (340,000 lbs.) and a maximum cutting height of 6 m (20 ft.). Engineered to help productively mine industrial minerals like trona, gypsum, potash and salt.

  • 50% more cutting power*
  • Up to 30% more mass*
  • Production increase up to 70%*
  • *Compared to 12HM26/12HM27/12HM36

Features and benefits

Corrosion protection

Pins and bushings have been designed to guard against corrosion, a common problem in industrial mineral operations.

Closed loop cooling

To eliminate discharging cooling water onto extracted material, the 12HM continuous miners can be supplied with a closed loop cooling system.

Applicable in industrial minerals

Specifically designed to operate in tough industrial minerals applications, such as salt, potash, trona and gypsum.

High production

With the most mass and installed cutting power, up to 850 kW (1,140 HP), the 12HM46 is engineered to be our most productive continuous heavy miner.

Drill and blast alternative

Continuous miners offer a highly productive alternative to traditional drill and blast mining systems.

Adaptability

With multiple models available, Joy 12HM continuous miners can be applied in seams from 2 to 6 meters (79 to 236 inches).

Specifications for 12HM46

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US system Metric
General

Cutter head design

Ripperveyor head

Cutter head diameter

1 475 mm 
*1 588 mm

Maximum cutting height

3 500 mm
4 500 mm 
5 500 mm 
6 000 mm 

Minimum cutting height
*Without dust collector

1 860 mm
2 700 mm 
2 800 mm 
3 000 mm 

Weight

154 220 - 184 090 kg

Ground pressure

260 - 317 kPa 

Ground clearance 305 mm
Conveyor width  965 mm
Tram speed 

First - 4.6 m/min
Second - 9.1 m/min
Third - 19.8 m/min

Machine input voltage

2 300 V @ 60 Hz
4 160 V @ 60 Hz
3 300 V @ 50 Hz

Cutter

250 kW @ 2 300 V, 60 Hz
250 kW @ 4 160 V, 60 Hz
*455 kW @ 4 160 V, 60 Hz
285 kW @ 3 300 V, 50 Hz

Pump

120 kW**

**Applies to 2 300 V/60 Hz,
4 160 V/60 Hz and 3 300 V/50 Hz

Gathering Head 50 kW x 2 @ 60 Hz
45 kW x 2 @ 50 Hz

Total Power

841 kW @ 2 300 V, 60 Hz
841 kW @ 4 160 V, 60 Hz
*1 251 kW @ 4 160 V, 60 Hz
900 kW @ 3 300 V, 50 Hz

*Optional, higher power cutterhead

Cutter head design

Ripperveyor head

Cutter head diameter

58 in
*62.5 in

Maximum cutting height

11 ft. 6 in
14 ft. 9 in
18 ft. 
19 ft. 9 in

Minimum cutting height
*Without dust collector

6 ft. 1 in
8 ft. 10 in
9 ft. 2 in
9 ft. 10 in

Weight

340,000 - 405,000 lbs.

Ground pressure

38 - 46 psi

Ground clearance 12 in
Conveyor width 38 in
Tram speed First - 15 fpm
Second - 30 fpm
Third - 65 fpm

Machine input voltage

2,300 V @ 60 Hz
4,160 V @ 60 Hz
3,300 V @ 50 Hz

Cutter

335 HP @ 2,300 V, 60 Hz
335 HP @ 4,160 V, 60 Hz
*610 HP @ 4,160 V, 60 Hz
382 HP @ 3,300 V, 50 Hz

Pump

161 HP**

**Applies to 2,300 V/60 Hz,
4,160 V/60 Hz and 3,300 V/50 Hz

Gathering Head 67 HP x 2 @ 60 Hz
60 HP x 2 @ 50 Hz
Traction 80 HP x 2

Total Power

1,128 HP @ 2,300 V, 60 Hz
1,128 HP @ 4,160 V, 60 Hz
*1,678 HP @ 4,160 V, 60 Hz
1,207 HP @ 3,300 V, 50 Hz

*Optional, higher power cutterhead

Support you can count on

Technology that works as hard as you do

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We help solve our customers’ toughest challenges using data-driven intelligence, collaboration and service execution. Our goal is to help reduce costs and increase productivity to help our customers achieve their operating and financial goals.
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The electronic heart of our continuous miners combines operator assistance tools, automated sequences, advanced diagnostics, machine performance monitoring and more to help you optimize your operation.
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Patented Joy OptiDrive AC system integrates software with the electronic and mechanical systems to provide a durable, maneuverable machine. 

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