Turtle Plastics Cribbing Slab – Composite Load Support Block, 55 and 111 Tonne

When the load is too heavy or too concentrated for a stack of cribs, you go to a slab. These are solid composite blocks 6 inches thick and a foot wide, rated to 55 and 111 tonne, with a rope handle moulded in so two people can carry one. Same material as the cribbing – will not rot, will not soak up oil, will not conduct.

Ways to buy

• Half Slab (T-S612-12) – 6" x 12" x 14", 55,000 kg, 12 kg.
• Slab (T-S612-24) – 6" x 12" x 24", 111,000 kg, 24.9 kg.
• Building height? – slabs stack with each other and sit under a crib tower as a base. Keep the whole stack square.
• Cribbing blocks, lock blocks, wedges, step chocks and pads – separate listings, linked at the bottom of this page.

Pick your slab

What is in the box

• One block in the size you select.
• Moulded rope handle where the factory fits one.
• Capacity is a static, flat, evenly distributed rating on a firm base.
• Recycled composite plastic – will not rot, splinter, absorb oil or water, and is non conductive.

Specifications

How to choose

• Concentrated load? A slab spreads it over a foot wide face instead of the narrow top of a crib.
• Building a tall stack? Start with a slab at the bottom, then crib up from there. A wide base is what keeps a tower honest.
• Two people to a slab. The 24 inch slab is 24.9 kg and awkward – use both handles.

Technicians Advice

The cylinder lifts. The cribbing holds. That is the whole discipline, and the people who get hurt are the ones who forget the second half of it – a seal can pass, a hose can get knocked, a coupler can be half engaged, and a load held on oil pressure alone comes down. Build the crib as you lift: a little bit of stroke, a little bit of crib, repeat.

A tower built in 50 mm bites is stable and you always have support within a few millimetres of the load. Keep the stack square and keep it under about three times its narrowest base dimension in height – taller than that and it will walk under vibration or a knock. The capacity figures on this page are for a block loaded flat and evenly on a firm base; point-load the corner of a crib and the number means nothing, which is exactly what the pads are for.

On soft ground, on summer bitumen, or on a trailer deck, the jack needs a pad too – a 100 tonne ram sitting on a 100 mm base is putting the weight of ten cars through something the size of a saucer.

Things worth knowing: never mix timber and composite blocks in one stack, because they compress at different rates and the tower works itself loose; and the rope handles are for carrying the block, not for dragging a loaded one out from under something.

Complete your setup

Need help choosing? Call 1300 146 737 or email sales@mhfgc.com.au – real technicians, real answers.