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pile driving and extracting, guardrail installation and maintenance, low price, stable performance, timely delivery and service - details see: https://www.machineto.com/highway-guardrail-tractor-post-driver-10113631

1. Functions

1.1 Pile Driving Function: NJ Series Highway Guardrail Tractor Post Driver and Extractor is specially designed for road maintenance work for the road safety barriers and guard rail posts.

1.2 Pile Extracting Function: With the same equipment and hydraulic system for extracting poorly driven or incorrectly positioned posts or road maintenance work, it is a professional machine for extracting the posts out of any conditions of ground.

2. Features

2.1 NJ Series Highway Guardrail Tractor Post Driver and Extractor is composed of truck chassis, upper column, hydraulic system, hydraulic hammer, control system, post driving and extracting equipment. It has the characters of good mobility, low oil consumption, reliable brake system, quick and exact positioning, humanized design, easy operation, high efficiency.

2.2 The up and down, longitudinal and transverse shift, horizontal slide and rotation of the column are realized through hydraulic system.

2.3 The hydraulic hammer is installed onto the upper column and be downward and upward along the track of the column for pile driving and extracting working by hydraulic system. When extracting guard rail posts, the extractable supporting foot is hydraulically positioned on the ground, for enhanced stability and safe pile extraction.

2.4 The control system is equipped with multiple directional control valve and centralized hydraulic control rods which makes the operation simple and convenient.

2.5 It can install piles up to 3m (9.84’) in length, but on request the machine can be supplied with extension columns which can install piles up to 3.5m (11.48’) or even 4m (13.12’) long.

2.6 The equipment does not need to turn the direction during driving and extracting the guardrail posts on both sides because of its 240° rotating device.

2.7 Its fast mobility and the capability of carrying piles and guard-rails as well as the necessary road signs with around 2 tons, make the truck-mounted pile driver the perfect solution for small jobs in different locations.

3. Main Technical Specifications

Type	NJ5052	NJ5072
Type of Chassis	JX1050	NKR77
Weight	4075 KG	4350 KG
Max. Weight	5500 KG	6500 KG
Person Capacity of Driving Cab	5 Persons	5 Persons
Size (L×W×H)	6090×1870×2560 mm	6250×1880×2850 mm
Max. Speed	100 km/h	100 km/h
Rated Power	85 KW	96 KW
Rotating Speed	3600 r/min.	2999 r/min.
Weight of Hydraulic Hammer	300 KG	300 KG
Dia. Of Drill Shank	70 mm	70 mm
Hydraulic System Pressure	>16 MPa	>16 MPa
Hydraulic System Flow	50-60 L/min.	55-65 L/min.
Displacement	60 ml/r	70 ml/r
Impulsive Pressure	10-16 MPa	10-16Mpa
Impulsive Frequency	10-16 Hz	13-18 HZ
Rotation Angle of Equipment	240°	240°
Extracting Stroke	1600 mm	1600 mm
Lateral Stroke	350 mm	350 mm
Supporting Foot Stroke	400 mm	400 mm
Pile Driving Force per Stroke of Hammer	Around 250 KN	Around 250 KN
Pile Extracting Force	Around 250 KN	Around 250 KN
Working height of hydraulic hammer	≤3000 mm	≤3000 mm