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

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Corrosion protection

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

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

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

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

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