SQ8SA4 Telescopic Crane on a Tandem-Axle Truck in the Philippines

A white telescopic boom with an operator's seat at the top of the column: photos from our customer in the Philippines show a BOB-LIFT SQ8SA4 telescopic crane mounted behind the cab of a white Isuzu truck with a flat deck.

At a glance: SQ8SA4 8 t telescopic boom crane · Philippines · tandem-axle flat deck truck · 2 customer photos.

What the photos show

• The truck. A white Isuzu cab-over truck with two rear axles carries a flat steel deck behind the crane.
• The crane. The white crane, marked BOB-LIFT, stands behind the cab. Its boom is raised a little and points back over the deck.
• The high seat. An operator's seat with a guard rail sits on top of the column, as on the technical drawing. A ladder runs up the column behind the cab.
• Outrigger. A white outrigger leg stands beside the front of the deck.
• The site. The truck is parked on a dirt yard under trees, next to a house.

These are the customer's own photos. No load weights, dates or comments came with them.

SQ8SA4 specifications

The SQ8SA4 is an 8 t telescopic boom truck-mounted crane with a maximum lifting moment of 20 t·m and four boom sections. Reach and load figures are read from the technical department's load chart drawing; the hydraulic figures come from the BOB-LIFT brochure.

Lifting moment is the load times its distance from the slewing centre. That is why the rated load drops as the boom reaches out. For example, the SQ8SA4 lifts 8,000 kg at 2.5 m but only 900 kg at 14 m. Outrigger span is the width between the outrigger feet when they are fully out. Set them on firm, level ground, such as concrete or compacted gravel, before each lift. For ground and outrigger rules, see the OSHA cranes and derricks standard.

At 5 m from the slewing centre the crane is rated for 4,000 kg. At 8 m it is 2,000 kg, and at the full 14 m reach it is 900 kg.

The SQ8SA4 product page has the full drawings. The five-section SQ8SA5 reaches further in the same 8 t class and appears in our delivery record from Russia.

Working from a high seat

On this crane the operator sits on top of the column instead of standing at the valve bank by the outrigger. That changes what the operator can see and how the crew works around the truck. Three things to plan for:

1. Keep a signaller on the ground. From the seat the operator sees over the deck and the load. A person on the ground should still watch the hook, the outriggers and anyone near the truck.
2. Climb only with the crane at rest. Use the ladder only when the truck is parked, the crane is still and the boom is stowed.
3. Plan room for the outriggers. They span 2,290 to 5,990 mm. On a narrow road or yard, check there is room to set them out before the truck parks.

Other capacities are in the telescopic boom truck mounted crane range, and every model around 8 t is listed on the 8 ton crane page.

Checking a truck for the SQ8SA4

Before you order, check three things on your truck. They decide whether the SQ8SA4 fits it.

• Payload. The crane weighs 3,600 kg. Take this off the truck's payload, then plan the body and the loads you carry with what is left.
• Hydraulic power. The crane needs 55 L/min at 26 MPa, about 30 kW. The power take-off and pump on your truck must give at least this.
• Outrigger room. The outriggers span 2,290 to 5,990 mm. Make sure the frame has room for them, and that your job sites do too.

Send us the make, model and wheelbase of your truck through the contact page, and our team will check the fit.

Record compiled by Achord Chan, Product Operations Director at BOB-LIFT, from the customer's photos, the technical department's drawing and the BOB-LIFT brochure.