Explosion Proof Manual Crane 1 Ton S4.2m H3m IIA-T2

IIA-T2 is an explosion protection classification based on the ATEX / IECEx system:

• Group II: Equipment for use in areas with explosive gas atmospheres (surface industries, not mines)
• Category A (IIA): Gas group IIA — covers gases such as propane, methane, butane, and similar hydrocarbons with a minimum ignition energy (MIE) higher than Group IIC gases like hydrogen or acetylene
• T2 temperature class: Equipment surface temperature must not exceed 300°C — suitable for gases with an auto-ignition temperature above 300°C
• Typical applications: IIA-T2 is common in petrochemical, oil & gas, and chemical facilities where propane, methane, or similar hydrocarbons may be present

For the Uzbekistan torch knockout drum pump skid application, IIA-T2 is required because the area may contain flammable hydrocarbon gases. If your hazardous area has a different gas group or temperature class, the crane can be re-specified — contact Yuantai with your area classification.

A manual hand chain crane is chosen for this hazardous area because:

• No electrical spark risk: Manual operation eliminates electric motors, brakes, contactors, and electrical wiring — the primary sources of electrical sparks that could ignite flammable gases
• Simplified certification: An explosion-proof electric crane requires flameproof motors, explosion-proof electrical enclosures, and complex certification (Ex d, Ex e, etc.). A manual crane achieves safety through simplicity, with spark-resistant materials (bronze, brass, stainless) on chain, gears, and wheels
• Lower cost: A manual explosion-proof crane costs significantly less than an explosion-proof electric crane of equivalent capacity
• Lower maintenance: No motors, brakes, or electrical components to inspect, maintain, or replace
• A3 light duty fits: At 1t capacity and A3 duty, the lift frequency is low enough that manual operation is practical — the pump skid area is not a high-throughput production area
• Reliable in remote sites: The Uzbekistan pump skid may be in a remote location where reliable electrical power for a crane is not available

The manual crane is the right choice when the load is light (1t), the duty is intermittent (A3), and the hazardous area classification demands strict spark prevention.

The 4 lighting fixtures are included on this explosion-proof manual crane because:

• Working area illumination: The pump skid area may require additional lighting for safe lifting operations, especially if the area has limited natural light or is shadowed by equipment
• Explosion-proof rated: The 4 lighting fixtures must be explosion-proof rated for IIA-T2 to match the crane's protection class — standard lighting is not allowed in this hazardous area
• Mounted on the crane girder: The fixtures are mounted on the crane girder so they move with the crane, illuminating the working area wherever the crane is positioned
• 4-fixture coverage: Four fixtures provide balanced illumination along the 5.4m girder for both the trolley travel and crane travel paths
• Safe maintenance: Good lighting is essential for safe maintenance of the pumps and equipment in the pump skid area

If additional lighting fixtures are needed, or if the fixtures should be mounted differently, this can be customized — contact Yuantai with your lighting requirements.

The 5.4m total girder length and 4.2m span work together as follows:

• 4.2m span: The center-to-center distance between the two runway rails is 4.2m — this is the working span of the crane
• 5.4m total girder length: The girder is 5.4m long — 4.2m of span plus 0.6m overhang on each side
• 0.6m overhang: The overhang on each side accommodates the end carriages, which sit on the runway rails and carry the wheels
• Hook approach: The overhang also determines how close the hook can get to the runway rail (hook approach) — in this case, close to the rail
• Wheel load: The 0.6m overhang affects the wheel load distribution — the 3.52 kN max wheel load accounts for this overhang and the 1t live load

This is a compact crane layout for a narrow pump skid area — the 4.2m span fits the narrow bay while the 5.4m girder provides adequate end carriage support.

The manual operating forces indicate how much pulling effort the operator must apply:

• Lifting manpower: 210 N — approximately 21 kgf of pull on the hand chain to lift the rated 1t load. This is a comfortable effort for one operator
• Crane travel manpower: 90 N — approximately 9 kgf of pull to move the crane along the rail. This is a very light effort — easily managed by one operator
• Trolley travel manpower: 50 N — approximately 5 kgf of pull to move the trolley along the girder. Very light effort, almost effortless

These operating forces are lower than typical manual cranes because the 1t capacity and 4.2m span are relatively small — the load moment is low, so the manual effort is correspondingly low. One operator can comfortably operate this crane for the intermittent lifting required at the pump skid.

To avoid surprises at installation, these items are outside the explosion-proof manual crane supply scope unless you specifically add them:

• Runway rail (I 20a~30c) and rail fasteners
• Rail mounting brackets, hangers, or supports to the building structure
• Building structural verification for the 3.52 kN wheel load
• Explosion-proof electrical wiring and power supply for the lighting fixtures
• Explosion-proof junction boxes and cable glands
• Hazardous area classification verification by a qualified engineer
• Erection crane and site lifting equipment for installation
• Local permits, inspections, and explosion-proof certification for the site

Because the explosion-proof manual crane is used in a hazardous area, the hazardous area classification, explosion-proof electrical wiring, and certification are critical — the area must be properly classified, all electrical components (including the 4 lighting fixtures) must be explosion-proof rated for IIA-T2, and local regulations must be met. Yuantai can provide explosion-proof certification documents and installation guidance as optional items.

Send these eleven items and Yuantai will issue a free custom explosion-proof manual crane CAD drawing and proposal within 24 hours:

1. Required lifting capacity (t) — e.g., 1t
2. Crane span (m) — e.g., 4.2m
3. Required lifting height (m) — e.g., 3m
4. Explosion protection class required (e.g., IIA-T2, IIB-T3, IIC-T4)
5. Gas group and temperature class
6. Hazardous area classification (Zone 1, Zone 2, or Division 1, Division 2)
7. Rail type (e.g., I 20a~30c)
8. Number of cranes required (e.g., 1 unit)
9. Lighting fixture requirements (e.g., 4 units, mounted position)
10. Application details (e.g., Uzbekistan torch knockout drum pump skid)
11. Any special requirements (e.g., material certificates, certification body preference)

The more complete the list, the faster and more accurate the explosion-proof manual crane drawing and quote.

This published explosion-proof manual crane drawing and 3D rendering are a free technical reference — you may use them to plan your hazardous area and check fit. A project-specific explosion-proof manual crane GA drawing and 3D model are also free for standard configurations. A design fee may apply only for complex hazardous area classifications, non-standard spans, specialized explosion-proof materials, or customized lighting and certification requirements. The explosion-proof manual crane drawing remains the property of Yuantai Cranes: unauthorized copying, use, or manufacturing without written authorization is strictly prohibited.