Cribbing Blocks

Cribbing blocks provide temporary support and stability for heavy machinery, vehicles and equipment while maintenance or servicing work is carried out. They hold a raised load in position and take the weight off jacks and lifting equipment during the job.

HDPE plastic does not absorb oil, fuel or water, so the blocks will not rot, splinter or deteriorate from soaked-up contaminants the way timber can. They also wipe clean easily, which suits workshop and maintenance areas where fluid spills are common.

Yes. The blocks are made to be stacked so crews can build up to the height a job requires. Always follow the manufacturer’s guidance on stacking configuration and load capacity.

A V-block has a shaped recess that cradles round components such as pipes, cylinders and shafts. The profile holds the item securely and prevents it from rolling out of position.

The right size depends on the weight of the load, the height the support must reach and the size of the contact surface. Larger blocks spread load over a wider footprint, while smaller blocks suit tighter access and finer height adjustment.

Consider the load being supported, the required support height, the shape of the contact surface, the ground conditions underneath and how often the blocks will be moved. Confirm the rated capacity of the specific product suits the application and always use the blocks in line with your site’s safe work procedures.

Cribbing gives load-rated support for raised plant, so the task never relies on hydraulics or brakes to hold position. Match rated capacity to the load, inspect blocks before use, build on firm, level ground and pair with chocks and exclusion.

Verify at the point of risk, not on paper. Observe the task underway: locks applied, rated supports positioned, barriers on the failure path. Layer spot checks, handover checks and task observations. Treat improvised gear as a failure.

Check each block for cracks, deep gouges, deformation and worn faces, and confirm stacking surfaces sit flat together. Damaged blocks must be removed from service, not used at reduced load.

Yes, and that is the intended sequence. The jack raises the load, cribbing takes and holds the weight, then work begins. A jack alone should never support a load while anyone is underneath.