Designed for dependable overhead lifting in manufacturing, maintenance, assembly, and material handling applications, the Ingersoll Rand ML250K-3HA15-C11U Air Chain Hoist combines a 1/4 Ton (550 lb / 250 kg) capacity with a 15 ft lift and 11 ft control drop for precise load handling. Part of the MLK Series, this pneumatic chain hoist features a six-vane air motor engineered for continuous 100% duty-cycle operation, delivering reliable lifting performance throughout demanding industrial shifts. Equipped with a 2 Motor Pendent Control, this model allows independent operation of both the hoist and a motorized trolley for accurate lifting and horizontal load travel. The steel snap hook with safety latch provides secure load engagement.
Engineered for reliable industrial service, the ML250K-3HA15-C11U features a spring-engaged, air-release non-asbestos disc brake that automatically secures suspended loads whenever the controls are released. Upper and lower limit stops help prevent excessive chain travel, while the hook-mounted design simplifies installation. An integrated fabric chain container keeps excess load chain organized during operation, making this hoist suitable for production facilities, fabrication shops, maintenance departments, and industrial workstations where powered lifting and powered trolley travel are required.
Type: Air Chain Hoist | Series: MLK Series | Capacity: 1/4 Ton (550 lb / 250 kg) | Lift: 15 ft | Control Drop: 11 ft | Control Type: 2 Motor Pendent Control | Top Suspension: Top Hook | Bottom Hook: Steel Snap Hook with Safety Latch | Chain Container: Fabric Chain Container | Chain Falls: 1 | Load Chain Size: 4 × 12 mm | Air Inlet: 1/4 in. NPT | Operating Pressure: 70–100 PSI | Duty Cycle: 100%
Features:
- Six-vane air motor delivers continuous 100% duty cycle operation.
- 2 motor pendent control operates both the hoist and motorized trolley independently.
- Spring-engaged, air-release non-asbestos disc brake securely holds suspended loads.
- Upper and lower limit stops help prevent excessive chain travel.
- Steel snap hook with safety latch provides dependable load attachment.
- Fabric chain container helps keep excess load chain organized.
- Single-fall load chain configuration supports the rated 1/4 ton lifting capacity.
- Meets ASME B30.16, ASME HST-5 Duty Rating A5, and FEM/ISO Classification 1Am/M4.
Applications:
- Production lines requiring powered lifting and trolley travel.
- Manufacturing facilities handling repetitive material movement.
- Maintenance operations requiring precise overhead positioning.
- Fabrication and machine shops with overhead monorail systems.
- Industrial assembly stations utilizing powered hoist and trolley systems.
FAQs:
- Q: What is the lifting capacity of this hoist?
A: The ML250K-3HA15-C11U is rated for lifting loads up to 1/4 ton (550 lb / 250 kg). - Q: What does the 2 motor pendent control operate?
A: It provides independent control of both the air hoist and the motorized trolley for lifting and horizontal travel. - Q: Does this model include a chain container?
A: Yes. A fabric chain container is included to help manage excess load chain. - Q: How many chain falls does this hoist use?
A: This model utilizes a single-fall (1-fall) load chain configuration. - Q: Is this hoist suitable for continuous-duty operation?
A: Yes. The six-vane air motor is designed for a 100% duty cycle for demanding industrial applications.

| SKU | Capacity | Hook Mount Headroom |
Trolley Mount Headroom |
Lifting Speed | Lowering Speed | Chain Size |
Chain Weight (per foot of lift) |
Net Weight w/10 ft of Lift |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| lb | metric tons |
# Falls | in | mm | in | mm | Rated Load | No Load | Rated Load | No Load | lb | kg | lb | kg | ||||||
| ft/min | m/min | ft/min | m/min | ft/min | m/min | ft/min | m/min | |||||||||||||
| ML250K | 550 | 0.25 | 1 | 18 | 457.2 | 18 | 457.2 | 101 | 30.8 | 171 | 52.1 | 117 | 35.7 | 99 | 30.2 | 6.4 x 19.5 | 0.6 | 0.3 | 48 | 21.8 |
| ML250KS | 550 | 0.25 | 1 | 18 | 457.2 | 18 | 457.2 | 40 | 12.2 | 71 | 21.6 | 90 | 27.4 | 53 | 16.2 | 6.4 x 19.5 | 0.6 | 0.3 | 48 | 21.8 |
| ML250KR | 550 | 0.25 | 1 | 18 | 457.2 | 18 | 457.2 | 26 | 7.9 | 42 | 12.8 | 38 | 11.6 | 30 | 9.1 | 6.4 x 19.5 | 0.6 | 0.3 | 48 | 21.8 |
| ML500K | 1,100 | 0.50 | 1 | 18 | 457.2 | 18 | 457.2 | 55 | 16.8 | 106 | 32.3 | 97 | 29.6 | 59 | 18 | 6.4 x 19.5 | 0.6 | 0.3 | 48 | 21.8 |
| ML500KS | 1,100 | 0.50 | 1 | 18 | 457.2 | 18 | 457.2 | 22 | 6.7 | 44 | 13.4 | 66 | 20.1 | 32 | 9.8 | 6.4 x 19.5 | 0.6 | 0.3 | 48 | 21.8 |
| ML500KR | 1,100 | 0.50 | 2 | 18 | 457.2 | 18 | 457.2 | 13 | 4 | 21 | 6.4 | 20 | 6.1 | 15 | 4.6 | 6.4 x 19.5 | 1.1 | 0.5 | 61 | 27.7 |
| ML1000K | 2,200 | 1 | 2 | 18 | 457.2 | 18 | 457.2 | 28 | 8.5 | 53 | 16.2 | 49 | 14.9 | 30 | 9.1 | 6.4 x 19.5 | 1.1 | 0.5 | 61 | 27.7 |
| ML1000KS | 2,200 | 1 | 2 | 18 | 457.2 | 18 | 457.2 | 11 | 3.4 | 22 | 6.7 | 33 | 10.1 | 16 | 4.9 | 6.4 x 19.5 | 1.1 | 0.5 | 61 | 27.7 |
| HL1000K | 2,200 | 1 | 1 | 18.5 | 469.9 | 18.1 | 459.7 | 26 | 7.9 | 40 | 12.2 | 37 | 11.3 | 26 | 7.9 | 9.5 x 25.7 | 1.3 | 0.6 | 84 | 38.1 |
| HL1000KR | 2,200 | 1 | 1 | 18.5 | 469.9 | 18.1 | 459.7 | 26 | 7.9 | 40 | 12.2 | 37 | 11.3 | 26 | 7.9 | 9.5 x 25.7 | 1.3 | 0.6 | 84 | 38.1 |
| HL1500K | 3,300 | 1.50 | 1 | 18.8 | 477.5 | 18.9 | 480.1 | 16 | 4.9 | 28 | 8.5 | 26 | 7.9 | 16 | 4.9 | 9.5 x 25.7 | 1.3 | 0.6 | 84 | 38.1 |
| HL2000K | 4,400 | 2 | 2 | 23 | 584.2 | 21.6 | 548.6 | 13 | 4 | 20 | 6.1 | 18 | 5.5 | 13 | 4 | 9.5 x 25.7 | 2.6 | 1.2 | 125 | 56.7 |
| HL3000K | 6,600 | 3 | 2 | 25 | 635 | 22.6 | 574 | 8 | 2.4 | 14 | 4.3 | 13 | 4 | 8 | 2.4 | 9.5 x 25.7 | 2.6 | 1.2 | 125 | 56.7 |
| HL4500K | 9,900 | 4.50 | 3 | 30.9 | 784.9 | 28 | 711.2 | 4.6 | 1.4 | 10.5 | 3.2 | 10 | 3.1 | 6.6 | 2 | 9.5 x 25.7 | 3.9 | 1.8 | 193 | 87.5 |
| HL6000K | 13,200 | 6 | 4 | 36.2 | 919.5 | 32.2 | 817.9 | 3.5 | 1.1 | 8.4 | 2.6 | 7.6 | 2.3 | 4.8 | 1.5 | 9.5 x 25.7 | 5.2 | 2.4 | 248 | 112.5 |
Looking for more information about Ingersoll Rand Air Hoist? Click here to view the Catalog.
Need more feet of chain or a longer pendant hose? How about a motorized trolley? Give us a call at 1-800-608-5210 or email info@intlairtool.com. We can help!
warning WARNING: This or other products sold on this website may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov

