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 » (SQS125A-3) 5 Ton Telescopic Boom Truck Mounted Crane

(SQS125A-3) 5 Ton Telescopic Boom Truck Mounted Crane

Model: SQS125A-3

The SQS125A-3 is a high-capacity telescopic boom truck crane engineered for demanding industrial, construction, and municipal lifting tasks. With a maximum lifting weight of 5,000 kg and 12.5 t·m lifting moment, it combines power, precision, and compact design for versatile applications. Featuring 360° slewing, 2350 kg crane weight, and 900 mm installation space, it integrates seamlessly with medium to heavy-duty trucks. The hydraulic system operates at 20 MPa with 40 L/min flow, powered by 20 kW, ensuring efficient lifting and smooth load control. Ideal for urban construction, heavy equipment positioning, cargo handling, and industrial maintenance, this crane stands out as a reliable mobile lifting solution.

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Product Description

Product Description Safety Related Products

Product Description

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Product Advantage

High Load-Bearing Capacity: Handles up to 5,000 kg with a 12.5 t·m lifting moment, ensuring efficient performance for heavy lifting tasks across construction, industrial, and logistics projects.

Advanced Hydraulic System: 40 L/min flow and 20 MPa pressure provide smooth, precise lifting operations while minimizing energy consumption and maintenance needs.

360° Slewing Flexibility: Full rotation allows for versatile load placement in warehouses, construction sites, docks, and urban areas, improving operational efficiency.

Durable & Reliable Build: High-strength steel, precision welding, and robust structural design ensure long service life and safety under continuous operation.

Multi-Industry Applications: Functions as a telescopic boom crane, hydraulic truck crane, mobile lifting crane, or heavy-duty urban construction crane, suitable for diverse industries.

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Technical Parameters

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Crane main technical parameters

Maximum Lifting weight	5000Kg	Oil tank capacity	100L
Maximum lifting moment	12.5t.m	Slewing angle	360°
Recommended power	20 KW	Hydrauic Crane weight	2200kg
Recommended hydroulic flow	40 L/min	Installation space	900mm
Rated hydraulic pressure	20MPa

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Product Uses

Heavy Industrial Operations: Lifting machinery, factory equipment, and large components in industrial and manufacturing facilities.

Construction & Engineering Projects: Ideal for steel structure installation, concrete panel placement, and infrastructure assembly.

Urban & Municipal Maintenance: Installation of street lights, utility poles, signage, and other city infrastructure efficiently and safely.

Logistics & Cargo Handling: Loading and unloading heavy materials, containers, and equipment in warehouses, docks, and freight yards.

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FAQ

1. What trucks are compatible with SQS125A-3?

A: Compatible with medium-to-heavy-duty trucks with at least 900 mm mounting space and sufficient chassis load capacity to safely support 5,000 kg lifting operations.

2. Can this crane be used in continuous industrial lifting tasks?

A: Yes, designed for repeated operations with minimal maintenance, providing reliable performance for long work shifts.

3. What is the recommended maintenance schedule?

A: Hydraulic oil should be checked every 500 operating hours or 6 months, along with inspection of hoses, control valves, and pivot points.

4. Can Tengchang provide spare parts and technical support internationally?

A: Yes, Tengchang Construction Machinery offers global after-sales support, spare parts supply, and technical guidance for all truck-mounted cranes.

5. How does Tengchang ensure the crane’s quality and safety?

A: All cranes are manufactured under ISO9001 standards, with advanced welding, high-precision machining, and rigorous load testing before shipment.

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.