SAN-EI Air Winch
Pneumatic Winch Product Series
SAN-EI Air Winches are pneumatic lifting and pulling devices driven by compressed air motors. These winches are designed for heavy-duty industrial operations where safety, reliability, and explosion-proof performance are required.
Because the winch operates using compressed air instead of electricity, it can work safely in areas where electrical equipment may pose a risk, such as explosive environments or locations without power supply.
SAN-EI offers a range of W-series air winches, which are compact, lightweight, and easy to operate while providing strong pulling capacity for industrial applications.
1 Main Features
Explosion-Proof Operation
Air winches are powered by compressed air and do not generate sparks, making them suitable for hazardous environments such as chemical plants and oil facilities.
Compact and Portable Design
The winch is designed to be compact and lightweight, allowing easy movement and installation in different working environments.
Reliable Pneumatic Motor
SAN-EI winches use robust radial piston air motors with oil-bath lubrication to ensure durability and stable performance.
Low Air Leakage
The operating section uses poppet valves, which minimize air leakage and improve operational efficiency.
Flexible Speed Control
The air flow from the control valve can be adjusted through the valve handle, allowing smooth control of winch speed.
High Safety Performance
Both manual and automatic systems use band brake mechanisms to ensure safe braking during operation.
Durable Construction
Bearings are fully sealed to prevent oil leakage and ensure long service life.
2 Structure and Working Principle
SAN-EI air winches consist of several main components:
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Pneumatic air motor
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Gear reduction mechanism
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Winch drum
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Control valve system
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Brake mechanism
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Steel rope
Compressed air drives the pneumatic motor, which rotates the gearbox and drum to wind or unwind the steel rope. The operator controls the direction and speed using the control valve.
3 Air Winch Model Series
SAN-EI air winches are mainly classified in the W-series tugger winches, which include different capacity levels.
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3.1 Small Capacity Air Winch
MP-W05 Series
Typical model:
MP-W05AA3SACMB
MP-W05AA3SAAB
Specifications:
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Motor output: about 2.3 hp
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Capacity: 1100 lbs (500 kg)
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Line speed: 62 ft/min
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Rope size: 5/16 in × 145 ft
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Air consumption: 71 CFM
Applications:
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light industrial lifting
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equipment maintenance
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workshop material handling
3.2 Medium Capacity Air Winch
MP-W10220 Series
Typical models:
MP-W10220SACMB
MP-W10220SAAB
MP-W10220LACMB
MP-W10220LAAB
Specifications:
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Motor output: 9.6 hp
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Capacity: 2200 lbs (1 ton)
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Line speed: 121 ft/min
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Rope size: 3/8 – 1/2 inch
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Air consumption: 191 CFM
Applications:
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construction sites
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marine equipment
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mining operations
3.3 Heavy Duty Air Winch
MP-W20220 Series
Typical models:
MP-W20220SACMB
MP-W20220SAAB
MP-W20220LACMB
MP-W20220LAAB
Specifications:
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Capacity: 4400 lbs (2 tons)
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Motor power: 9.6 hp
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Rope size: 7/16 – 1/2 inch
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Air consumption: 191 CFM
Applications:
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heavy industrial pulling
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shipyard operations
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steel plants
3.4 Large Capacity Air Winch
MP-W3036 Series
Typical models:
MP-W3036SACMB
MP-W3036SAAB
MP-W3036LACMB
MP-W3036LAAB
Specifications:
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Capacity: 6600 lbs (3 tons)
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Motor output: 16 hp
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Rope size: 5/8 inch
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Air consumption: 318 CFM
These winches are widely used in offshore oil platforms and railway operations.
3.5 Ultra Heavy Duty Air Winch
MP-W5036 Series
Typical models:
MP-W5036SACMB
MP-W5036SAAB
MP-W5036LACMB
MP-W5036LAAB
Specifications:
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Capacity: 11000 lbs (5 tons)
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Motor power: 16 hp
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Rope size: 3/4 inch
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Line speed: 36 ft/min
Applications:
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shipbuilding
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petrochemical industry
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large equipment handling
3.6 Extra Large Industrial Air Winch
MP-AH45-100 Series
Typical model:
MP-AH45-100-S1H
Specifications:
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Motor power: 23 hp
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Capacity: 22000 lbs (10 tons)
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Rope diameter: 1-1/4 inch
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Air consumption: 600 CFM
This is a large industrial pneumatic winch for heavy lifting operations.
| 型式 | ロープ プル ［ton］ | モータ 出力 ［kw］ | 減速比 | ロープ スピード ［m/min］ | 空気消費量 ［㎥/min(nor)］ | ロープ容量 | 質量 手動ブレーキ | 質量 自動ブレーキ | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ショート ドラム (φmm×m) | ロング ドラム (φmm×m) | ショート ドラム (kg) | ロング ドラム (kg) | ショート ドラム (kg) | ロング ドラム (kg) | ||||||
| W-05 | 0.5 | 1.73 | 40.6 | 19 | 2.0 | 8×45 | 8×90 | 55 | 60 | 59 | 64 |
| W-10 | 1 | 7.15 | 17.3 | 37 | 5.4 | 10.0×175 12.5×115 | 10.0×350 12.5×230 | 257 | 276 | 267 | 288 |
| W-20 | 2 | 7.15 | 34.2 | 19 | 5.4 | 12.5×115 | 12.5×230 | 266 | 287 | 276 | 297 |
| W-30 | 3 | 12.00 | 35.6 | 19 | 9.0 | 16×160 | 16×320 | 470 | 513 | 513 | 527 |
| W-50 | 5 | 12.00 | 72.99 | 11 | 9.0 | 22.4×115 | 22.4×230 | — | 850 | 780 | 873 |
4 Main Industrial Applications
SAN-EI air winches are widely used in industries such as:
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metal mining
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shipbuilding
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construction engineering
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petrochemical plants
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heavy machinery manufacturing
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offshore platforms
They are particularly suitable for hazardous environments where explosion-proof equipment is required.
5 Advantages of Pneumatic Winches
Compared with electric winches, pneumatic winches offer several advantages:
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explosion-proof operation
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no electrical sparks
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safe overload behavior
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easy speed control
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reliable operation in harsh environments
These characteristics make them widely used in chemical plants, marine operations, and heavy industry.