Boom Positioning & Load Alignmen

Rotate the crane to align the boom over the load. Adjust boom height and telescopic extension to position the hook correctly. Safety Tip: Follow the load chart and ensure lifting weight is within allowed limits for current boom radius and angle.

Crane Extension Preparation

Sit at operator seat and slowly operate boom angle handles to extend the main boom and telescopic sections. Move one handle at a time. Safety Tip: Never operate multiple boom handles simultaneously. Keep boom path clear of personnel.

Unlock outriggers and extend main and auxiliary outriggers fully. Place support pads under each outrigger on soft ground. Safety Tip: Ensure the truck is level. Incomplete extension may lead to tipping hazards.

Engaging Power Take-Off (PTO)

Ensure truck gear is in neutral and PTO switch is off. Start engine and wait for safe air pressure levels. Engage PTO slowly to drive the hydraulic crane system. Safety Tip: Confirm all control levers are neutral before operation. Improper PTO engagement can damage hydraulic components.

Pre-Operation Site Check

Park the truck on firm, level ground. Engage the parking brake. Inspect the surrounding area for obstacles, overhead lines, or unstable surfaces. Confirm the load is within crane rated capacity and lifting height limits. Safety Tip: Never operate on soft or sloped surfaces. Maintain at least 10 meters distance from high-voltage lines.

You are here: Home » Product » Telescopic Boom Truck Mounted Crane » (SQS300G-4) 12 Ton Telescopic Boom Truck Mounted Crane

(SQS300G-4) 12 Ton Telescopic Boom Truck Mounted Crane

Model: SQS300G-4

The SQS300G-4 is a high-capacity hydraulic telescopic truck crane engineered for large-scale construction, industrial projects, and port logistics. With 12 t maximum lifting weight and 30 t·m lifting moment, it ensures precision and stability in demanding lifting tasks. Its 30 kW hydraulic system delivers 63 L/min at 28 MPa, while 360° slewing allows full flexibility. Weighing 4,300 kg, installation space can be customized according to the truck chassis. Ideal for industrial equipment handling, infrastructure installation, and high-rise construction projects.

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Product Description

Product Description Safety Related Products

Product Description

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Product Advantage

SQS300G-4 offers superior lifting capacity, operational precision, and reliability for complex projects.

High-Capacity Lifting: Handles up to 12 t with 30 t·m moment.

Precision Hydraulics: 63 L/min at 28 MPa ensures smooth and safe lifting.

360° Slewing: Maximum rotation flexibility for confined spaces.

Robust Design: Reinforced steel structure for long-lasting durability.

Versatile Applications: Ideal for ports, logistics, industrial equipment handling, and high-rise construction.

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Technical Parameters

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Crane main technical parameters

Maximum Lifting weight	12000Kg	Oil tank capacity	200L
Maximum lifting moment	30t.m	Slewing angle	360°
Recommended power	30 KW	Hydrauic Crane weight	4300kg
Recommended hydroulic flow	63+40 L/min	Installation space	1300mm
Rated hydraulic pressure	28MPa

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Product Uses

Construction Sites: Moving steel beams, prefabricated panels, and concrete components.

Industrial Operations: Installing or relocating large machinery.

Port Handling: Lifting containers, heavy cargo, and industrial materials.

Urban Projects: Installing streetlights, traffic signals, and infrastructure equipment.

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FAQ

1. What is the recommended truck for mounting?

A: Trucks with payload capacity supporting 4,300 kg crane weight.

2. Is SQS300G-4 suitable for port lifting operations?

A: Yes, stable and precise for industrial cargo handling.

3. What maintenance is required for hydraulic components?

A: Oil and filter checks every 500 hours; hoses and valves inspection recommended.

4. Does Tengchang offer international shipping?

A: Yes, we provide global logistics support and spare parts supply.

5. Can this crane operate at full extension safely?

A: Yes, rated for 12 t at 30 t·m.

Truck-Mounted Crane Safety & Operation Guide

Ensuring operator and crew Safety with proper handling.

Boom Positioning & Load Alignmen

Rotate the crane to align the boom over the load.

Adjust boom height and telescopic extension to position the hook correctly.

Safety Tip: Follow the load chart and ensure lifting weight is within allowed limits for current boom radius and angle.
Crane Extension Preparation

Sit at operator seat and slowly operate boom angle handles to extend the main boom and telescopic sections.

Move one handle at a time.

Safety Tip: Never operate multiple boom handles simultaneously. Keep boom path clear of personnel.
Outrigger Setup

Unlock outriggers and extend main and auxiliary outriggers fully.

Place support pads under each outrigger on soft ground.

Safety Tip: Ensure the truck is level. Incomplete extension may lead to tipping hazards.
Engaging Power Take-Off (PTO)

Ensure truck gear is in neutral and PTO switch is off.

Start engine and wait for safe air pressure levels.

Engage PTO slowly to drive the hydraulic crane system.

Safety Tip: Confirm all control levers are neutral before operation. Improper PTO engagement can damage hydraulic components.
Pre-Operation Site Check

Park the truck on firm, level ground. Engage the parking brake.

Inspect the surrounding area for obstacles, overhead lines, or unstable surfaces.

Confirm the load is within crane rated capacity and lifting height limits.

Safety Tip: Never operate on soft or sloped surfaces. Maintain at least 10 meters distance from high-voltage lines.

Post-Operation Maintenance

Lubricate pivot points, boom slides, and hydraulic cylinder pins

Check hydraulic oil levels, inspect hoses, and tighten bolts

Safety Tip: Only trained personnel should perform hydraulic maintenance. Replace worn parts immediately.
Crane Retraction & Stowage

Retract telescopic sections and fold boom sequentially.

Rotate crane to stowed position and fully retract outriggers

Safety Tip: Follow reverse order of extension to protect hydraulic cylinders and boom sections.
Lowering & Load Placement

Lower the load carefully to the designated position.

Detach slings and cables only when load is stable and personnel are clear.

Safety Tip: Never leave a suspended load unattended. Avoid sudden lowering.
Rotating with Load

Rotate the crane slowly to move the load

Monitor outrigger stability and crane tipping indicators.

Safety Tip: Do not extend the working radius while rotating a loaded boom. Keep movements smooth.
Lifting Operation

Lift the load slowly and steadily. Avoid sudden movements or swinging.

Monitor vehicle stability and outrigger pressure during the lift.

Safety Tip: Never exceed rated capacity. Avoid lifting loads over personnel.