SQ6.3SA4 Crane on a Ramp Truck in Congo

A yellow BOB-LIFT SQ6.3SA4 telescopic crane on a white flatbed truck with loading ramps at the rear: six photos from our customer in Congo follow it from the first gathering around the truck to the boom fully raised in a red-earth yard.

At a glance: SQ6.3SA4 6.3 t telescopic boom crane · Congo · behind-cab on a ramp flatbed and a dropside truck · 6 customer photos.

In the yard in Congo

• Handover under the shed. In the first photo about ten people stand around the truck under an open steel shed. Two of them are on the crane's base platform at the control station. The boom carries the BOB-LIFT and SQ6.3S markings, and boxes sit on the empty deck.
• Ramp flatbed. The truck has a long flat deck with two folding ramps at the rear, a layout used for carrying machinery that drives on and off.
• Boom raised. Four photos, taken at dusk, show the boom raised steeply and extended with the hook block at its tip. An outrigger leg is down beside the cab, and a worker stands at the control station. A forklift works nearby.
• Second truck. The last photo shows the same crane type, marked SQ6.3S, folded behind the cab of a white truck with a dropside body, parked on open red ground.

These are the customer's own photos. No lift weights, dates or comments came with them, and none of the photos shows a load on the hook.

SQ6.3SA4 specifications

The SQ6.3SA4 is a 6.3 t telescopic boom truck-mounted crane with a maximum lifting moment of 15.75 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 SQ6.3SA4 lifts 6,300 kg at 2.5 m but only 600 kg at 12.6 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.

Close to the column the crane lifts 6,300 kg. At 4.5 m it is rated for 2,800 kg, and with the boom fully extended to 12.6 m, as in the dusk photos, it is rated for 600 kg.

The SQ6.3SA4 product page has the dimension drawing and the full specification. For heavier loads at the same reach, the five-section SQ8SA5 is rated for 1,800 kg at 8.5 m.

A crane on a ramp flatbed: what to plan

A ramp flatbed with its own crane can carry a machine on the deck and still lift parts, attachments or materials on and off without a second machine on site. Three points decide whether a 6.3 t crane fits that job:

1. The heaviest item and where it sits. A part placed in the middle of a long deck can be 5 m or more from the column, where the rating is below 2,800 kg.
2. Deck length. The crane needs about 850 mm of installation space behind the cab, which comes off the deck. Check that the machines you carry still fit with the ramps in use.
3. Outriggers and ground. The outriggers span up to 5.3 m. On soft earth like the yard in these photos, use pads under the outrigger feet.

The boom-raised photos also show the check worth doing on any new crane before its first job: outriggers set, the boom raised and extended through its range, and the slewing tried with nothing on the hook. How we fit cranes to customer chassis is on the mounting and shipping page, and other capacities are in the telescopic boom truck mounted crane range.

Checking a truck for the SQ6.3SA4

Before you order, check three things on your truck. They decide whether the SQ6.3SA4 fits it.

• Payload. The crane weighs 2,600 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 40 L/min at 20 MPa, about 22 kW. The power take-off and pump on your truck must give at least this.
• Outrigger room. The outriggers span 2,280 to 5,300 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.