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 » Timber Crane » 4 Ton Material Grab For Crane (WZJ030)

4 Ton Material Grab For Crane (WZJ030)

The WZJ030 is a heavy-duty hydraulic timber grab, designed for industrial forestry, sawmill operations, and heavy material handling. With a maximum lifting capacity of 4,000 kg and 360° rotation, it is ideal for large logs, timber bundles, and bulk materials. The hydraulic system (60 L/min at 25 MPa) ensures smooth and precise operation, while the robust structure (300 kg) provides long-lasting durability in demanding environments.

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Product Description

Product Description Safety Related Products

Product Description

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Product Advantage

WZJ030 delivers high lifting performance, full rotation flexibility, and durability, making it a trusted solution for industrial timber handling.

Heavy Lifting Capacity: 4 t maximum, handling large logs or bundles efficiently.

360° Rotation: Ensures precise positioning and easy load placement.

Robust Hydraulic System: 60 L/min flow at 25 MPa guarantees smooth operation.

Durable Construction: Reinforced steel design for long-term reliability in industrial use.

Versatile Applications: Ideal for forestry, sawmills, construction, and recycling.

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Technical Parameters

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Crane main technical parameters

Maximum Lifting weight	4000 Kg	Slewing angle	360°
Recommended hydroulic flow	60 L/min	weight	300kg
Rated hydraulic pressure	25MPa

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Product Uses

Industrial Timber Yards: Loading and unloading heavy timber.

Forestry & Logging: Moving large logs from cutting sites.

Sawmills & Wood Processing Plants: Efficient material handling.

Construction & Recycling Sites: Lifting bulk materials with precision.

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FAQ

1. What vehicles or cranes are compatible with WZJ030?

A: Medium to heavy-duty truck-mounted cranes or stationary hydraulic systems.

2. Can it rotate continuously while lifting heavy logs?

A: Yes, designed for 360° continuous rotation even under full load.

3. How reliable is Tengchang for international buyers?

A: Tengchang has exported to over 300 countries with ISO9001-certified quality.

4. Are training and technical support provided?

A: Yes, worldwide operator training and support are available.

5. Can it handle irregular-shaped timber?

A: Yes, the hydraulic grapple is designed for irregular and bulky loads.

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.