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 » Knuckle Boom Truck Mounted Crane » (SQZ20A.3) 1.5 Ton Small Hydraulic Knuckle Boom Crane

(SQZ20A.3) 1.5 Ton Small Hydraulic Knuckle Boom Crane

Model: SQZ20A.3

The SQZ20A.3 Knuckle Boom Truck Mounted Crane is a light-duty, compact folding boom crane designed for small trucks and utility vehicles. With a maximum lifting capacity of 1,500 kg and a maximum working range of 4.2 meters, this hydraulic truck crane is ideal for precision lifting tasks in narrow or restricted spaces. Its lightweight structure, smooth slewing performance, and wide operating temperature range make it an excellent solution for urban logistics, maintenance services, and small-scale construction applications.

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Product Description

Product Description Safety Related Products

Product Description

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Product Advantage

1. Lightweight Structure for Small Truck Applications
With a self-weight of only 530 kg, SQZ20A.3 significantly reduces chassis load, allowing installation on light trucks and pickup-based platforms while maintaining stable lifting performance.

2. Precise Lifting and Smooth Slewing Control
The crane features a controlled slewing speed of ≤3 r/min and a slewing angle of 330°, ensuring precise load positioning. This makes it especially suitable for delicate operations such as equipment placement and maintenance work.

3. Energy-Efficient Hydraulic System
Operating with a recommended power of 7.5 kW and a hydraulic flow of 15 L/min, the crane offers low energy consumption while maintaining reliable output, helping reduce overall operating costs.

4. Wide Operating Temperature Range
Designed to work reliably from -25°C to +50°C, the crane is suitable for diverse climates, ensuring stable performance in cold regions, high-temperature environments, and outdoor job sites.

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Technical Parameters

Crane main technical parameters

Max lifting movement	19.6KN.m	Recommended hydraulic flow	15 L/min
Maximum Lifting weight	1500Kg	Maximum working pressure	22MPa
Maximum working range	4.2m	Slewing speed	≤3r/Min
Maximum lifting height	≥ 4.4m	Recommended power	7.5KW
Boom Angle	70°	Oil tank capacity	25L
Slewing angle	330°	Installation space	550mm
Hydraulic Crane weight	530kg	Operation temperature	−25°C−+50°C

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Product Uses

Urban Maintenance and Utility Services
Used for streetlight maintenance, signage installation, and city infrastructure repairs where space is limited.

Small-Scale Construction Projects
Ideal for lifting tools, small building materials, and prefabricated components on residential or commercial job sites.

Logistics and Last-Mile Delivery
Enhances efficiency in loading and unloading goods in urban distribution and warehouse operations.

Equipment Repair and Service Vehicles
Suitable for service trucks handling generators, pumps, and mechanical equipment installation.

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FAQ

1. Is SQZ20A.3 suitable for light commercial vehicles?

A: Yes, its lightweight design and low power requirement make it suitable for light trucks and utility vehicles.

2. Can this crane operate in cold climates?

A: Yes, it is designed to operate reliably in temperatures as low as -25°C.

3. Does the crane support customized configurations?

A: Yes, options such as control layout and hydraulic accessories can be customized to meet specific operational needs.

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.