SQ12SA4 Telescopic Crane Delivered to Bahrain

A red SQ12SA4 telescopic crane stands between the cab and a long white dropside body on a three-axle truck in Bahrain. Our customer there sent back four photos from an open works yard. They show the crane with a technician on its base platform, and the boom raised over the body.

At a glance: SQ12SA4 12 t telescopic boom crane · Bahrain · behind-cab on a three-axle dropside truck · 4 customer photos.

The truck in the yard

• Behind-cab mounting. The crane column sits directly behind the cab, so the dropside body behind it keeps its full length for cargo. The boom carries the BOB-LIFT and SQ12S markings.
• Technician on the crane. In one photo a technician stands on the crane's base platform, working at the top of the column next to the control station. A red and black striped outrigger leg stands beside the column.
• Boom raised. In the other shots the boom is pulled in and raised at an angle above the body. The hook block is stowed at the boom head.
• Site. The truck is parked on gravel among shipping containers, drums and other trucks.

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

SQ12SA4 reach and load

The SQ12SA4 is a 12 t telescopic boom truck-mounted crane with a rated lifting moment of 33 t·m. The reach and load figures are read from the technical department's drawing.

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 SQ12SA4 lifts 12,000 kg at 2.5 m but only 1,200 kg at 16.19 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 full reach the SQ12SA4 is rated for 1,200 kg, one tenth of its close-in capacity. Size a 12 t crane from the radius you will work at, not from the headline figure.

Planning a behind-cab dropside truck like this one

A behind-cab crane puts its weight on the front of the chassis, where the cab and engine already sit. With a 4.6 t crane plus subframe, check the front-axle rating first, before body length or tyre size. How we plan the subframe and fit a crane to a customer chassis is on the mounting and shipping page.

The outrigger legs beside the column are what the crane stands on during a lift. Fully extended, the span is 7.5 m, so plan lift positions on site with that width clear.

A dropside body like this one loads from the side as well as from the crane. That suits pallets, building materials and machine parts. Full specifications and the dimension drawing are on the SQ12SA4 product page. Other capacities are in the telescopic boom truck mounted crane range.

Checking a truck for the SQ12SA4

Before you order, check three things on your truck. They decide whether the SQ12SA4 fits it.

• Payload. The crane weighs 4,600 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 75 L/min at 26 MPa, about 45 kW. The power take-off and pump on your truck must give at least this.
• Outrigger room. The outriggers span 2,300 to 7,500 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 and the technical department's drawing.