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2. Telescopic cylinder - Wikipedia

   en.wikipedia.org/wiki/Telescopic_cylinder

   Telescopic cylinders require careful design as they are subjected to large side forces especially at full extension. The weight of the steel bodies and the hydraulic oil contained within the actuator create moment loads on the bearing surfaces between stages. These forces, combined with the load being pushed, threaten to bind or even buckle the ...

3. Hydraulic rescue tool - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_rescue_tool

   There are many types and sizes of rams, including single-piston, dual-piston and telescopic rams. Sizes commonly vary from 50.8 cm (20.0 in) to 178 cm (70 in) (extended). [ citation needed ] Rams use more hydraulic fluid during operation than spreader-cutters, so it is essential that the pump being used has enough capacity to allow the ram to ...

4. Jack (device) - Wikipedia

   en.wikipedia.org/wiki/Jack_(device)

   A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power. [1] The most common form is a car jack, floor jack or garage jack, which lifts vehicles so that maintenance can be performed.

5. Reach extender - Wikipedia

   en.wikipedia.org/wiki/Reach_extender

   A 36 in (910 mm) reach extender with a secondary trigger and a pole that can be rotated 90 degrees. A reach extender (or reacher, grabber arm, helping hand, trash picker, picker-upper, extended gripper, long arm gripper, extended reach grabber, grabber tool, litter picker, or caliper) is a handheld mechanical tool used to increase the range of a person's reach and grasp when grabbing objects.

6. Rake (tool) - Wikipedia

   en.wikipedia.org/wiki/Rake_(tool)

   A heavy rake is for conditioning and dethatching soil as well as moving larger pieces of debris. Most weeds have weaker and shallower roots than grass and thus dethatching along with (afterward) necessary sunlight, fertilizer and seed, and if later necessary any remedial chemicals, makes for a good crop of grass.

7. Hydraulic cylinder - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_cylinder

   If we call a normal rod cylinder single stage, telescopic cylinders are multi-stage units of two, three, four, five, or more stages. In general telescopic cylinders are much more expensive than normal cylinders. Most telescopic cylinders are single acting (push). Double acting telescopic cylinders must be specially designed and manufactured. [17]