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- Ingersoll Rand "MLK" Series Compressed Air Hoist / Pneumatic - Range from 250kg to 1000kg

Ingersoll Rand "MLK" Series Compressed Air Hoist / Pneumatic - Range from 250kg to 1000kg
Super heavy duty, high speed production hoist.
MLK Series Air Hoist / MS-3396





Serving industry for over 25 years, the rugged and reliable MLK series share a common design with many interchangeable parts. With high speeds and precise spotting, these hoists are ideal for high production cycle operations. Both spark resistant, designated with a KR suffix, and slow speed precision spotting models, deignated with a KS suffix, are offered.
MLK series hoists come complete with 10 feet of standard lift and either 6 feet of pendant control or 6 feet of pull chain control.
Features
- Meets ASME B30.16 Specifications.
- 100% duty cycle. MLK/HLK are rated as HMI duty classification A5, severe duty. This equates to FEM 9.511 duty classification 2m.
- These hoist are ideal for the harsh environments found in steel mills, foundries and electroplating operations. These are also ideal for high duty cycle applications.
- Pull chain or pilot pendent controls provide precise spotting capabilities. For even more precise control MLKS slow speed models are available.
- Self adjusting, air operated disc brake is spring applied and air released. Wear tested to over 1 million cycles before replacement.
- All rotating parts are supported by either ball or roller type bearings. Unique planetary gearing system assures long life.
- Thoughtful design includes parts interchangeability, inlet swivels, exhaust air chain lubrication, control adjustment screws and easy conversion from pull chain to pendent control.
- Spark resistant models and a wide range of options and accessories are available.
Rugged Construction for Severe Duty Use
- Robust high strength aluminium housing with durable powder coated paint finish.
- Insensitive to dust and humidity.
- 100% duty cycle multi-vane-motor - Avoids downtimes.
- Corrosion resistant load chain.
Efficiency
- High lifting and lowering speeds.
- Low air consumption.
- Precise load positioning through pilot pendant of pull chain.
- Low noise level (89 dBA).
Versatility
- Numerous options available for adaptation to your application: chain containers, rigid mounting trolleys, CE compliant versions, spark resistant versions suitable for ATEX zone 1 applications.
Specifications
At 6.3 bar dynamic pressure (when hoist is running). Working pressure 5 to 7 bar.
Model | Rated capacity (kg) | Falls of load chain | Min. headroom (mm) | Lifting speed at rated load (m/min) | Lifting speed at no load (m/min) | Lowering speed at rated load (m/min) | Air cons. at rated load (m/min) | Sound pressure (dBA) | Hoist weight (kg) | Chain size (mm) | Chain weight / 1m extra lift (kg) |
MLK Standard Series / Hook mount configuration | |||||||||||
ML250K | 250 | 1 | 457 | 30.8 | 52.1 | 35.7 | 2.1 | 89 | 21.8 | 6.4 x 19.5 | 1.0 |
ML500K | 500 | 1 | 457 | 16.8 | 32.3 | 29.6 | 2.1 | 89 | 21.8 | 6.4 x 19.5 | 1.0 |
ML1000K | 1000 | 2 | 457 | 8.5 | 16.2 | 14.9 | 2.1 | 89 | 27.7 | 6.4 x 19.5 | 2.0 |
MLK for explosive atmosphere Zone 1 (as per ATEX Ex II 2 GD c IIB 135°C X) / Hook mount configuration | |||||||||||
ML250KR | 250 | 1 | 457 | 7.9 | 12.8 | 11.6 | 2.1 | 89 | 28.1 | 6.4 x 19.5 | 1.0 |
ML500KR | 500 | 2 | 457 | 4.0 | 6.4 | 6.1 | 2.1 | 89 | 28.1 | 6.4 x 19.5 | 2.0 |

Dimensions
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Hook mount configuration | Standard trolley mount configuration with RT010 trolley - Plain (DA) or motorised (HA) | Trolley mount configuration with TIR6600 trolley for wide beam - Motorised only (HD) |
Model | A | B | C | D | E | F | G | H | J | Air Inlet Ø |
Hook Mount - Dimensions in mm | ||||||||||
ML250K | 457 | 146 | 102 | 114 | 54 | 343 | 162 | 483 | 24 | 1/2" NPT |
ML250KR | 457 | 146 | 102 | 114 | 54 | 343 | 162 | 483 | 28 | 1/2" NPT |
ML500K | 457 | 146 | 102 | 114 | 54 | 343 | 162 | 483 | 24 | 1/2" NPT |
ML500KR | 457 | 165 | 83 | 135 | 25 | 343 | 162 | 508 | 28 | 1/2" NPT |
ML1000K | 457 | 165 | 83 | 135 | 25 | 343 | 162 | 508 | 28 | 1/2" NPT |
Trolley Mount - Dimensions in mm | ||||||||||
ML250K(R)..DA | 457 | 191 | 37 | 321 | 107 | 70 | 67 | 394 | 24 | 1/2" NPT |
ML500K(R)..DA | 457 | 191 | 37 | 321 | 107 | 70 | 67 (105) | 394 | 24 (28) | 1/2" NPT |
ML1000K..DA | 457 | 191 | 37 | 321 | 107 | 70 | 105 | 394 | 28 | 1/2" NPT |
ML250K(R)..HA | 457 | 191 | 37 | 321 | 107 | 70 | 67 | 394 | 24 | 1/2" NPT |
ML500K(R).HA | 457 | 191 | 37 | 321 | 107 | 70 | 67 (105) | 394 | 24 (28) | 1/2" NPT |
ML1000K(R)..HA | 457 | 191 | 37 | 321 | 107 | 70 | 105 | 394 | 28 | 1/2" NPT |
ML250K(R)..HD | 442 | 191 | 39 | 374 | 146 | 114 | 62 | 394 | 24 | 1/2" NPT |
ML500K(R)..HD | 442 | 191 | 39 | 374 | 146 | 114 | 62 (105) | 394 | 24 (28) | 1/2" NPT |
ML1000K(R)..HD | 442 | 191 | 39 | 374 | 146 | 114 | 100 | 394 | 28 | 1/2" NPT |
Serving industry for over 25 years, the rugged and reliable MLK series share a common design with many interchangeable parts. With high speeds and precise spotting, these hoists are ideal for high production cycle operations. Both spark resistant, designated with a KR suffix, and slow speed precision spotting models, deignated with a KS suffix, are offered.
MLK series hoists come complete with 10 feet of standard lift and either 6 feet of pendant control or 6 feet of pull chain control.
Features
- Meets ASME B30.16 Specifications.
- 100% duty cycle. MLK/HLK are rated as HMI duty classification A5, severe duty. This equates to FEM 9.511 duty classification 2m.
- These hoist are ideal for the harsh environments found in steel mills, foundries and electroplating operations. These are also ideal for high duty cycle applications.
- Pull chain or pilot pendent controls provide precise spotting capabilities. For even more precise control MLKS slow speed models are available.
- Self adjusting, air operated disc brake is spring applied and air released. Wear tested to over 1 million cycles before replacement.
- All rotating parts are supported by either ball or roller type bearings. Unique planetary gearing system assures long life.
- Thoughtful design includes parts interchangeability, inlet swivels, exhaust air chain lubrication, control adjustment screws and easy conversion from pull chain to pendent control.
- Spark resistant models and a wide range of options and accessories are available.
Rugged Construction for Severe Duty Use
- Robust high strength aluminium housing with durable powder coated paint finish.
- Insensitive to dust and humidity.
- 100% duty cycle multi-vane-motor - Avoids downtimes.
- Corrosion resistant load chain.
Efficiency
- High lifting and lowering speeds.
- Low air consumption.
- Precise load positioning through pilot pendant of pull chain.
- Low noise level (89 dBA).
Versatility
- Numerous options available for adaptation to your application: chain containers, rigid mounting trolleys, CE compliant versions, spark resistant versions suitable for ATEX zone 1 applications.
Specifications
At 6.3 bar dynamic pressure (when hoist is running). Working pressure 5 to 7 bar.
Model | Rated capacity (kg) | Falls of load chain | Min. headroom (mm) | Lifting speed at rated load (m/min) | Lifting speed at no load (m/min) | Lowering speed at rated load (m/min) | Air cons. at rated load (m/min) | Sound pressure (dBA) | Hoist weight (kg) | Chain size (mm) | Chain weight / 1m extra lift (kg) |
MLK Standard Series / Hook mount configuration | |||||||||||
ML250K | 250 | 1 | 457 | 30.8 | 52.1 | 35.7 | 2.1 | 89 | 21.8 | 6.4 x 19.5 | 1.0 |
ML500K | 500 | 1 | 457 | 16.8 | 32.3 | 29.6 | 2.1 | 89 | 21.8 | 6.4 x 19.5 | 1.0 |
ML1000K | 1000 | 2 | 457 | 8.5 | 16.2 | 14.9 | 2.1 | 89 | 27.7 | 6.4 x 19.5 | 2.0 |
MLK for explosive atmosphere Zone 1 (as per ATEX Ex II 2 GD c IIB 135°C X) / Hook mount configuration | |||||||||||
ML250KR | 250 | 1 | 457 | 7.9 | 12.8 | 11.6 | 2.1 | 89 | 28.1 | 6.4 x 19.5 | 1.0 |
ML500KR | 500 | 2 | 457 | 4.0 | 6.4 | 6.1 | 2.1 | 89 | 28.1 | 6.4 x 19.5 | 2.0 |

Dimensions
![]() |
![]() |
![]() |
Hook mount configuration | Standard trolley mount configuration with RT010 trolley - Plain (DA) or motorised (HA) | Trolley mount configuration with TIR6600 trolley for wide beam - Motorised only (HD) |
Model | A | B | C | D | E | F | G | H | J | Air Inlet Ø |
Hook Mount - Dimensions in mm | ||||||||||
ML250K | 457 | 146 | 102 | 114 | 54 | 343 | 162 | 483 | 24 | 1/2" NPT |
ML250KR | 457 | 146 | 102 | 114 | 54 | 343 | 162 | 483 | 28 | 1/2" NPT |
ML500K | 457 | 146 | 102 | 114 | 54 | 343 | 162 | 483 | 24 | 1/2" NPT |
ML500KR | 457 | 165 | 83 | 135 | 25 | 343 | 162 | 508 | 28 | 1/2" NPT |
ML1000K | 457 | 165 | 83 | 135 | 25 | 343 | 162 | 508 | 28 | 1/2" NPT |
Trolley Mount - Dimensions in mm | ||||||||||
ML250K(R)..DA | 457 | 191 | 37 | 321 | 107 | 70 | 67 | 394 | 24 | 1/2" NPT |
ML500K(R)..DA | 457 | 191 | 37 | 321 | 107 | 70 | 67 (105) | 394 | 24 (28) | 1/2" NPT |
ML1000K..DA | 457 | 191 | 37 | 321 | 107 | 70 | 105 | 394 | 28 | 1/2" NPT |
ML250K(R)..HA | 457 | 191 | 37 | 321 | 107 | 70 | 67 | 394 | 24 | 1/2" NPT |
ML500K(R).HA | 457 | 191 | 37 | 321 | 107 | 70 | 67 (105) | 394 | 24 (28) | 1/2" NPT |
ML1000K(R)..HA | 457 | 191 | 37 | 321 | 107 | 70 | 105 | 394 | 28 | 1/2" NPT |
ML250K(R)..HD | 442 | 191 | 39 | 374 | 146 | 114 | 62 | 394 | 24 | 1/2" NPT |
ML500K(R)..HD | 442 | 191 | 39 | 374 | 146 | 114 | 62 (105) | 394 | 24 (28) | 1/2" NPT |
ML1000K(R)..HD | 442 | 191 | 39 | 374 | 146 | 114 | 100 | 394 | 28 | 1/2" NPT |
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