A simple solution to incremental lifting and lowering

.pFix{ padding-right: 10px; padding-left: 0px; } .p0{padding:0;} .m10{margin: 10px 0px 10px 0px;} .mw{max-width:100%;min-width: 100%; margin-bottom: 10px; height: auto;} .video-container { position: relative; padding-bottom: 56.25%; padding-top: 30px; height: 0; overflow: hidden; } .video-container iframe, .video-container object, .video-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; } *:focus { outline: none; } .btn-pri { color: #000000; font-weight: bold; background-color: #ffcc00; border-color: none; border: none; border-radius: 0px; color: #000000 !important; outline: 0px !important; } .btn-pri:hover{ background-color: #000000;color: #ffcc00 !important; } .tabledata td { padding: 10px!important } .hdr{ display: block; margin-bottom: 5px; margin-top: 10px; border-bottom: 1px solid #dadada; } #newsContainer * { font-size: 18px !important; } #newsContainer p{line-height: 1.4em !important;} #newsContainer ul li{ line-height: 1.4em !important; } @media (max-width:768px) { .bb{ border-bottom: 1px solid #dadada; padding-bottom: 10px; margin-bottom: 25px; margin-top: 10px; } } The BLS-Series Climbing Jacks are a simple solution for incrementally lifting or lowering a load. In combination with cribbing blocks, climbing jacks are able to overcome the lift height limitations of a cylinder’s plunger stroke length. The double-acting cylinders are specially designed for lifting, lowering and holding a load. The climbing jacks base and tilt saddle are integral to stage lifting operations. The double-acting cylinder is affixed to a steel base for stability and safety. The plunger’s title saddle helps prevent side loading. Capacity per lifting point: 55 - 220 tons Stroke per stage: 5.91 - 6.34 inches The Akkerwinde Bridge over the A7 motorway in the Netherlands was constructed on the ground, lifted up in stages, held and lowered onto an abutment with double-acting Climbing Jacks and a 4-point Synchronous Lifting System. Standard stage lifting operation. Step 1 The Climbing Jack is placed on a solid support under the load (retracted plunger). Step 2 Plunger extends, lifting the load and giving clearance to insert two outer blocks under the spreading plate. Step 3 Plunger retracts, giving clearance to position the central blocks which will support the plunger plate for the next extension. Step 4 Plunger extends, lifting the load, giving clearance to insert two new blocks, placed crosswise under the spreading plate. Recommended Pumps The SFP-Series Split Flow Pumps have multiple outlets with equal oil flow. A split flow pump can provide control of up to 6 points with manual control. The EVO-Series Synchronous Lifting Systems have a stage lift work mode which simplifies the lifting operations during each stage. A SyncLift can control up to 12 points with automatic control. BLS-Series Product Specs