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Product Description
JM Air Hoists Fixed Series(3~12t)
Product Introduction:
The JM Air Hoists Fixed Series (3–12t) is a high-capacity pneumatic lifting solution purpose-built for extreme heavy-lift operations in hazardous and demanding industrial environments. Covering a capacity range from 3 tons to 12 tons, this series is the preferred choice for sectors requiring safe, spark-free, and reliable hoisting performance where electric alternatives pose safety risks.
Core Strengths:
1.Superior Heavy-Load Capability
Engineered to handle loads from 3 to 12 tons, the JM series utilizes high-torque air motors and multi-stage planetary gear trains to deliver smooth, powerful lifting even under maximum rated capacity.
2.Intrinsic Safety for Hazardous Zones
With no electrical components, the hoist eliminates the risk of electrical sparks, making it fully suitable for ATEX-classified explosive atmospheres, flammable gas zones, dusty environments, and high-humidity or corrosive locations.
3.Fixed-Point Heavy-Duty Suspension
Designed for permanent installation on structural beams, gantries, or dedicated support frames. The fixed mounting ensures maximum stability when maneuvering oversized or unbalanced heavy loads.
4.Precision Control under Full Load
Pneumatic proportional control enables infinite speed variation, allowing operators to inch loads into exact positions with millimeter precision—critical for die alignment, equipment installation, and precision assembly of heavy components.
5.Built for Continuous Duty Cycles
All critical components—including alloy steel planetary gears, hardened pistons, and T8-grade calibrated load chains—are manufactured with high-precision machining and heat-treated to withstand severe operational demands. The chain safety factor is 5 times the standard tensile force.
6.Advanced Safety Architecture
Features built-in overload limiting, automatic braking upon air supply failure, and a fail-safe mechanical brake system, ensuring load security under all operating conditions.
Outline Dimensions (JM3-1/JM5-2/JM6-2):
Outline Dimensions (JM9-3/JM10-4/JM12-4):
| Model | JM3-1 | JM5-2 | JM6-2 | JM9-3 | JM10-4 | JM12-4 | |
| A | mm | 824 | 900 | 1097 | 1075 | ||
| B | mm | 470 | 680 | 790 | |||
| C | mm | 397 | 546 | 592 | |||
| D | mm | 258 | |||||
| E | mm | 571 | |||||
| F | mm | 236 | |||||
| G | mm | 335 | |||||
| Hmin | mm | 728 | 800 | 970 | 950 | ||
| J | mm | 65.5 | 145 | 197.5 | |||
| K | mm | 404.5 | 535 | 592.5 | |||
| φ | mm | 56 | 63 | ||||
| M | mm | 45 | 50 | ||||
Technical Parameters:
| Model | JM3-1 | JM5-2 | JM6-2 | JM9-3 | JM10-4 | JM12-4 | |
| Duty Classification | M3 | ||||||
| Lifting Capacity | t | 3 | 5 | 6 | 9 | 10 | 12 |
| Lifting Height | m | 3 | |||||
| Number of Chain Falls | 1 | 2 | 3 | 4 | |||
| Motor Output Power | kW | 3.5 | |||||
| Working Pressure | bar (kg/cm²) | 6 | |||||
| No-load Lifting Speed | m/min | 6 | 3.3 | 3 | 2 | 1.5 | |
| Full-load Lifting Speed | m/min | 3.5 | 2 | 1.8 | 1.2 | 1 | |
| Full-load Lowering Speed | m/min | 8 | 5 | 3 | 2 | ||
| No-load Lowering Speed | m/min | 5.5 | 3.5 | 2.8 | 1.5 | 1.3 | |
| Air Consumption | m³/min | 5.5 | |||||
| Air Inlet Connection | in | Rc3/4 | |||||
| Air Hose Size (I.D.) | mm | 25 | |||||
| Chain Size | mm | 13×36 | |||||
| Control Hose Length | m | 3 | |||||
| Noise Level (Full-load Lifting) | dB | 79 | |||||
| Noise Level (Full-load Lowering) | dB | 79 | |||||
| Weight | kg | 110 | 122 | 145 | 165 | ||
| Notes: 1.The control hose length is configured based on the standard lifting height of 3m. 2.The net weight is calculated based on a lifting height of 3m. 3.When the working pressure is 4 bar, the hoist must be operated at a reduced load capacity. For details or any special requirements, please contact our sales engineers. | |||||||
Primary Applications:
*Heavy equipment installation and maintenance
*Mining and quarrying operations
*Offshore oil & gas platform lifting
*Steel mills and foundries
*Shipbuilding and repair yards
*Chemical processing plants with explosion risks
*Large-diameter pipe handling and positioning
